Operating Manual for Model USN52 L Ultrasonic Flaw Detector with On Board Data Logger Data Set Memory & High Resolution LCD Display Part No. 021-002-140 Rev.
Important Notice Important Notice Training Please read the following information prior to use of any Krautkramer instruments. The customer must provide for adequate training of the operators to assure competence in the operation of the equipment and in the associated factors. The operator must be trained both in general ultrasonic testing procedure and in the set-up and performance of a particular test or application.
Important Notice In testing extended areas beyond the expected sound beam path, extrapolations or other assumptions are sometimes based on statistical and other modifications of actual data obtained. Such results and their use and interpretation are the sole responsibility of the user. Flaw Size Evaluation In present test practice there are basically two methods of assessing flaws.
Important Notice Specifications and Procedures The customer must understand and provide for interpretation and compliance with the specifications covering its work, generated by such groups as in-house Quality Assurance, Technical Societies, Industry Groups, or Government Agencies. Ultrasonic Thickness Measurements Ultrasonic thickness measurements are the result of the mathematical product of the velocity of sound in a material and the transit time of the soundwaves through the material.
Important Notice ing value is between the specification minimum and about twice that value. Confirmation of the real thickness can usually be obtained using an ultrasonic flaw detector with CRT presentation, suitably calibrated, whereby individual echo signals can more readily be identified and evaluated. The following example shows graphically the relationship of several thicknesses.
Contents Important Notice ............................................................ 1 Table of Contents ........................................................... 5 Warranty / Service .......................................................... 8 6. USN52 L Menu Structure ................................................ 30 6.1 Menu Related Keypad Controls ............................ 30 6.2 USN52 L Menu Guide ............................................ 31 1. Introduction ..............................
Contents 8.7 Data Set Directory ................................................... 59 8.8 A-Scan Preview ........................................................ 60 9. Calibrating the A-scan Display ....................................... 61 9.1 General Notes on Calibration ................................ 61 9.2 Initial Instrument Settings ..................................... 62 9.3 Calibration - Single Element Probe ...................... 62 9.4 Calibration - Dual Element (TR) Probe .................
Contents 15.7 Clearing Selected Files ...................................... 106 15.8 Clearing All Files ................................................. 106 15.9 Permanent Storage ............................................ 107 16. Using Peripherals with the USN52 L .......................... 108 16.1 RS-232 I/O Interface ........................................... 108 16.2 Connecting a Peripheral Device ....................... 109 16.3 Printing a HARD COPY of the Display .............. 110 16.
Warranty / Service Warranty Service When used in accordance with the manufacturer’s written instructions and under normal operating conditions, Krautkramer’s USN52 L test instruments are conditionally guaranteed to be free from defects in material and workmanship for a period of two (2) years from date of shipment.
1. Introduction 1.1 How to Use This Manual This manual describes the features and operation of the USN52 L Portable Ultrasonic Flaw Detector manufactured by Krautkramer.
1. Introduction 1.2 Features of the USN52 L • RF display mode improves signal evaluation and bond inspection of dissimilar materials and assists crack tip detection and sizing. • Selectable rep rate minimizes phantom echoes caused by wrap around noise. • Four step damping control provides transducer matching for broader range of applications. • Four step frequency control provides selectable amplifier bandpass for optimum signal to noise.
1. Introduction • RS-232 bi-directional interface for transferring data, A-scan displays, and reports to a printer, computer, or recorder, and for remote control • Stores 100 ready-to-use instrument control data sets in memory for quick and repeatable calibration. • Gate monitors amplitude and soundpath distance for both flaw and thickness applications.
2. USN52 R Accessories and Peripherals 2. USN52 L Accessories and Peripherals Product Code Alpha Code Description 021-010-073 022-506-390 SNBD BPSN Six (6) “D” size, 5.
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3. Preparing the USN52 L for Operation 3. Preparing the USN52 L for Operation The USN52 L is supplied with a battery charger/power supply unit. Refer to the separate instruction sheet supplied with the unit for operating information. 3.1 Installing Batteries Each battery in the battery pack is mounted separately in a holder designed to prevent power interruption if the instrument is jolted.
3. Preparing the USN52 L for Operation 3.2 Connecting Ultrasonic Transducers 5. Press to return to the BASIC menu and A-scan display. Transducer (probe) connectors are located at the lower right corner of the front panel. Connect single element probes to the one on the right (Receive). For dual element probes, connect the Transmit side to the left connector and the Receive side to the right. 3.
4. Front Panel of the USN52 L USN52 R • For a description of USN52 L keyboard controls, refer to Section 4.1. • For an explanation of the USN52 L display and indicators, refer to Section 4.2.
4. Front Panel of the USN52 L 4.1 Keyboard Controls The ON/OFF switch controls instrument power. When turned off, current control settings are saved. When switched on, the menu displayed initially is always BASIC, and previous instrument control settings are restored.
4. Front Panel of the USN52 L On the upper menu level, press the right or left MENU key to display the desired menu. Functions in the displayed ). The seven upper level menus are displayed menu are controlled by the INCREMENT/DECREMENT keys ( sequentially as the menu key is pressed. Pressing both keys simultaneously changes menu level (same as ). On the lower menu level, each menu is divided into three columns of functions. The MENU keys select the active column.
4. Front Panel of the USN52 L The dB REF key stores a selected reference echo signal for comparison against echoes from discontinuities. Reference and incremental gain levels are also stored and displayed in the GAIN function box, as shown below. Note that the incremental gain value replaces the word “GAIN”. Reference GAIN is the instrument gain setting at the time that dB REF is enabled. Incremental GAIN shows any change, relative to reference gain, since dB REF was enabled. A positive value (+xx.
4. Front Panel of the USN52 L The MAGNIFY key expands the gated portion of the A-scan to fill the entire width of the display. A second press returns the display to the normal A-scan presentation. Press ZOOM key to expand the A-scan display horizontally. Menu functions are not available when the display is ZOOMed because the A-scan occupies the menu area of the display. Press ZOOM again to return to the standard display.
4. Front Panel of the USN52 L 4.2 Displays and Indicators A-SCAN DISPLAY MENU DISPLAY 6.0 GAIN 42.0 dB RANGE FUNCTION 2.500 in CURRENT SETTING MTL VEL .2330/ s UNIT OF MEASURE DELAY MEASURMENT LINE 0.000 2.500 0.000 s STATUS LINE MENU SELECT LINE BASIC RCVR PULS GATE S-CAL MEM SELECTED MENU A-scan Display: TCG BATTERY INDICATOR The A-scan area of the screen displays echo signals during an inspection. The graticule divides the Ascan area into 5 horizontal and 5 vertical divisions.
4. Front Panel of the USN52 L Menu Display: Most functions are controlled via menus displayed in this area of the screen. The seven upper level and three lower level menus are described in Chapter 6. The Menu Select Line displays the names of the seven upper level menus with the currently selected menu highlighted. These menus are the most frequently used. Lower level menus contain three columns of functions and fill the entire display area when selected.
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4. Front Panel of the USN52 L Status Line Symbol: Description: Freeze mode has been activated by pressing . MEASURE function set to “0 to 1st”; TOF set to “FLANK”. MEASURE function set to “MULTECHO”; TOF set to “FLANK”. MEASURE function set to “0 to 1st”; TOF set to “PEAK”. MEASURE function set to “MULTECHO”; TOF set to “PEAK”. REJECT function has been turned on. PULSER has been set to SINGLE. PULSER has been set to DUAL TCG has been turned on (TCG menu).
5. Quick Start - Basic Familiarization 5. Quick Start - Basic Familiarization 5.1 Preparation Use the step-by-step exercises in this chapter to become familiar with some of the basic features and operations. Before you begin, prepare the instrument by following the procedures in Chapter 3. You will need a contact type ultrasonic transducer (probe), a test block (preferably 1 inch thick steel, such as an IIW block), and some couplant for these exercises.
5. Quick Start - Basic Familiarization 5.3 Using Functions and Keypad Controls To begin this exercise, the selected menu should be BASIC. If necessary, select the BASIC menu: . Press The second item in the BASIC menu is RANGE. It controls the horizontal range of the A-scan display. Press of the corresponding INCREMENT/DECREMENT key to view the 9 discrete RANGE steps from 0.200 to 200.0 inches of test material. This is coarse mode.
5. Quick Start - Basic Familiarization Press until the dB STEP value reads 1.0. Use to set amplitude of the 1 inch backwall echo at 80% of screen height (8 divisions high). Now switch to the lower menu level by pressing . Find the GATE LOGIC function in the center column of menu 8 and frame that column of functions: . GATE LOGIC should be POSITIVE. If not, use TIVE logic. to set POSI- Select the MEASURE function (lower menu level) and set it to “0 to 1st”. Values now appear in the measurement line.
5. Quick Start - Basic Familiarization To free the hand holding the probe, optimize the 1 inch backwall echo and then press . Now you can uncouple the probe without losing either the A-scan image or the measurement values. This operation is not required but it demonstrates one benefit of the FREEZE key. Press to redisplay the enlarged soundpath measurement so that the enlarged value display will be stored and recalled. Some keys and menu functions may be used while the display is frozen (Section 4.1).
5. Quick Start - Basic Familiarization Set RANGE to 5.000 in: Increase GAIN, if necessary, until the echo just exceeds gate threshold level: Couple the probe to the block and adjust GAIN to put the first backwall echo at 80% screen height: Select the GATE menu and set a-WIDTH to 1.000 in: or , then . Record the second echo amplitude for the curve by pressing aligned with DAC ECHO.
5. Quick Start - Basic Familiarization 6. USN52 L Menu Structure 6.1 Menu Related Keypad Controls Pressing Functions of the USN52 L are grouped into menus. There are 10 menus in all, 7 on the upper and 3 on the lower level. Organization of menus and functions is shown on the next page. The upper menu level contains the most frequently used functions. is displayed until The currently selected upper level menu is displayed to the right of the A-scan display area as explained in Section 4.2.
6. USN52 R Menu Structure 6.2 USN52 L Menu Guide USN52 L menus and their respective functions are shown below. BASIC RCVR PULS UPPER LEVEL MENUS GATE S-CAL MEM TCG GAIN 30.0 dB GAIN 30.0 dB GAIN 30.0 dB GAIN 30.0 dB GAIN 30.0 dB GAIN 30.0 dB GAIN 30.0 dB RANGE 2.500 in. FREQ. .4-10 MHz PULSER SINGLE a-THRESH 50% a-START 0.750 in. RECALL OFF DAC/TCG OFF MTL VEL .2330 in/ µs DAMPING 50 REJECT 0% a-START 0.600 in MTL VEL .2330 in/µs SET #150 MY STUFF a-START 0.750 in DELAY 0.
6. USN52 L Menu Structure LOWER LEVEL MENUS or GRATICULE ON AMPLITUDE % SCREEN HT FREEZE MODE* FREEZE ALL or AUTO CAL ON GATE LOGIC POSITIVE MEASURE 0 TO 1st TOF FLANK Page 32 to frame active column VELOCITY #1 .2330/ µs VELOCITY #2 .1320 / µs dB STEP 24.0 dB GATE LOGIC POSITIVE FILE NUMBER ACTIVE 1 LOCATION 1 VALUE 0.
7. USN52 L Menu Functions 7.1 BASIC Menu Function Description GAIN adjusts vertical amplitude of echo signals in the A-scan display. GAIN function is available from all upper level menus. Adjustment Range / Options 0.0 to 110.0 dB Steps of 0.1, 0.5, 1.0, 2.0, 6.0, or user set (see note at right). Step at left is 1.0. RANGE sets horizontal width of the A-scan in inches or millimeters of test material. Coarse: 0.200, 0.300, 0.400, 0.500, 1.000, 2.500, 5.000, 10.00, 50.00, 100.0, and 200.
7. USN52 L Menu Functions Function MTL VEL .2330 in/ µs Description MTL VEL = velocity of sound in test material; reference value only (not intended for precision velocity measurement). When in coarse mode, “MTL VEL” (upper case) is displayed. When in fine mode “mtl vel” (lower case) is displayed. DELAY adjusts timing of sweep start and, thus, horizontal position of signals, gate ,etc. in A-scan display. Page 34 Adjustment Range / Options Coarse: 2 user selectable values; factory settings are .
7. USN52 L Menu Functions 7.2 RCVR Menu Function FREQ .4-10 MHz Description Adjustment Range / Options Controls Sets frequency and bandwidth of the receiver .3-4 MHz, .4-10MHz, 2-8MHz, 3-10MHz - display desired option Sets receiver damping 50, 1K, 150, 75 (ohms) - display desired option Sets rectification mode for echo signals. FULL - Fullwave NEG HALF - Negative Halfwave POS HALF - Positive Halfwave RF - RF display USN52 L Operating Manual - display desired option NOTES on RF Mode: 1.
7. USN52 L Menu Functions 7.3 PULS Menu Function SINGLE Page 36 Description Adjustment Range / Options PULSER selects single element or dual. Enables separate Transmit/ Receive for dual element probe, or 2 probes. SINGLE, DUAL REJECT suppresses unwanted low amplitude signals, such as electrical or material noise.
7. USN52 L Menu Functions 7.4 GATE Menu Function Description a-THRESH adjusts threshold level of gate a. b-THRESH adjusts threshold level of gate b. Adjustment Range / Options a-THRESH and b-THRESH: 10% to 90% screen height; ±5% to ±45% in RF mode Increment is 1% Controls - decrease - increase - toggle a / b Note: Use GATE LOGIC function, menu 8, to enable gate and select positive or negative logic. a-START adjusts horizontal position of leading edge (start) of gate a bar. 0.000 to 200.0 inches (0.
7. USN52 L Menu Functions 7.5 S-CAL Menu Function MTL VEL .2330 in/ µs 0.000 µs Page 38 Description Adjustment Range / Options Controls - decrease (left) a-START adjusts horizontal position of leading edge (start) of gate bar. 0.000 to 200.0 inches (0.0 to 5000. mm) MTL VEL = velocity of sound in test material; reference value only (not intended for precision velocity measurement).
7. USN52 L Menu Functions 7.6 MEM Menu Function Description RECALL activates instrument control settings and displays frozen A-scan image stored in selected DATA SET no. WARNING! All current settings will be replaced by the recalled settings. SET # 1 NAME USN52 L Operating Manual Adjustment Range / Options OFF, ON Note: Attempting to recall an empty or corrupted data set causes an error message: “Data set error! Cannot recall...”.
7. USN52 L Menu Functions 7.7 TCG Menu Function OR Description Adjustment Range / Options DAC/TCG enables DAC record mode and TCG and DAC functions. REC, OFF, TCG, DAC a-START adjusts horizontal position of leading edge (start) of gate bar. 0.000 to 200.0 inches (0.0 to 5000. mm) Continuously adjustable In REC mode, DAC ECHO shows current reference echo number and records reference amplitude. In DAC or OFF mode, shows number of recorded reference points in the curve.
7. USN52 L Menu Functions 7.8 Menu 8 - Lower Level Function Description Adjustment Range / Options Enables, disables horizontal and vertical display markers. ON, OFF AMPLITUDE sets method of amplitude display (H value in the measurement line) of highest echo signal in the gate. % SCREEN HT - Expressed as percent of screen height.
7. USN52 L Menu Functions Function dB STEP 24.0 dB Description Adjustment Range / Options VELOCITY #1 sets first velocity for MTL VEL function in coarse mode. 430 to 3930 in/s (1000 to 9999 m/s) Continuously adjustable VELOCITY #2 sets second velocity for MTL VEL function in coarse mode. 430 to 3930 in/s (1000 to 9999 m/s) Continuously adjustable from dB STEP sets size of user programmable step option for 24.0 to 6.5 dB Increment is 0.
7. USN52 L Menu Functions Function Description Controls When memory is clear, FILE NUMBER selects number of files and configures on-board data logger. If files have been configured, selects one file, or all files, for logging or printing data.
7. USN52 L Menu Functions 7.9 Menu 9 - Lower Level Function DATA SET DIREC OFF DATA SET NAME #1 NONE Page 44 Description Adjustment Range / Options Controls ASCAN selects outlined or fully illuminated echo signal display. HOLLOW - Signals outlined SOLID - Signals fully illuminated Selects LANGUAGE for displays and reports.
7. USN52 L Menu Functions Function Description BAUD RATE sets speed of RS-232 data transfer to match receiving device. USN52 L Operating Manual Adjustment Range / Options 300, 600, 1200, 2400, 4800, 9600 Sets word LENGTH for RS232 data transfer. 7: 7 data bits 8: 8 data bits PARITY sets RS-232 error detection method.
7. USN52 L Menu Functions Function Description COPY MODE sets type of internal or external (RS-232C) data communication to be initiated by . Printouts are formatted for either EPSON FX 850 dot matrix printer with Intelligent Serial Interface No. 8148, or SEIKO DPU 411 (user selectable). Adjustment Range / Options HARD COPY - Printout of entire display contents, including A-scan and menus. REPORT - Printout of data logger report showing file contents and related data.
7. USN52 L Menu Functions Function Description ANGLE of beam propagation in trigonometric flaw location (illustration next page). THICKNESS (for angle beam flaw location) is the dimension from the sound entry surface to the opposite side of the object being tested (see illustration below). X-VALUE (for angle beam flaw location) is the measured distance from the beam index point to the front of the angle beam probe or wedge (see illustration below).
7. USN52 L Menu Functions Function O-DIAM 6.80 in Page 48 Description O-DIAM (for curvature correction) is needed when tests are conducted on circular curved surfaces. To correct the projection distance and depth for this curvature, enter the test object’s outside diamater. Adjustment Range / Options 2.048″-78.
7. USN52 L Menu Functions 7.10 Menu 10 - Lower Level Function AUTOCAL ON GATE LOGIC OFF USN52 L Operating Manual Description Adjustment Range / Options AUTOCAL calibrates ASCAN display by performing adjustments to MTL VEL and ZEROwith just a few key presses by the operator. ON/OFF GATE LOGIC enables and disables gate and sets gate logic. Note: When gate is disabled, no gate bar is displayed in Ascan. OFF - Gate is disabled.
7. USN52 L Menu Functions Function Description MEASURE selects method for soundpath distance and thickness measurements. When set to 0 TO 1st or MULTECHO, measurement line displays measurement values or data logger info. Adjustment Range / Options OFF - No soundpath measurement 0 TO 1st - Measure from set zero point to first echo in gate above threshold. Controls - display desired option MULTECHO - Measure between first 2 echo signals in gate above threshold.
7. USN52 L Menu Functions Function Description EVALUAT. MODE TCG MEMO OFF MEAS. UNITS INCH USN52 L Operating Manual Adjustment Range / Options Base unit is fixed in TCG mode. Note: If DGS option is purchased, this control allows selection between TCG and DGS modes. None Enables/Disables Memo Dump function and automatic display of memo screen when storing a data set. ON/OFF MEAS. UNITS selects unit of measure.
8. Using the Data Set Memory 8.1 Overview of the Memory Function The USN52 L has the capability to STORE and RECALL its current parameter settings and A-SCAN DISPLAY in any of 100 DATA SETS, and provides a DATA SET DIRECTORY of stored readings. Names can be added to stored DATA SETS at any time for easier identification. The PREVIEW function displays stored ASCANs without recalling the data sets. This is useful for browsing through the data sets while keeping the current settings.
8. Using the Data Set Memory The memory flag can be cleared from a data set as follows: Access the MEM menu, double key press the INCREMENT/DECREMENT keys corresponding to the RECALL box. A flashing message will appear as: press “HOME” to clear data set. Pressing HOME will remove the memory flag assigned to the data set. This data set can now be utilized for a new configuration of stored data.
8. Using the Data Set Memory Note that fields may be designated as active during header setup, which will prevent the user from entering information in the memo field. Instead, the instrument will directly input designated data directly into the active field as directed during header setup. If the header has not been formatted with the UltraDOC utility, it will automatically become one blank field of 80 characters which can not be modified from the memo screen. 8.
8. Using the Data Set Memory HEADER LINE 1 MEMO LINE 1 HEADER LINE 2 MEMO LINE 2 SELECTION CHARACTERS LINES 1 AND 2 BLOCK CURSOR OPERATOR HEADER FIELD DATA X-COORD FIELD DIVISION Y-COORD A 1 K MPL S-PATH 27 ß ß P-DIST DEPTH KEY 1 COMMENT KEY 2 1.O35 IN TAB 1 2 3 4 5 6 7 8 9 0 .
8. Using the Data Set Memory To enter characters on memo line 1: Leave the block cursor in it’s initial position on line 1 • • • key 3 or 4) to the Move the underline cursor (using desired character. When the desired character is selected (by placing the underline cursor under the character) note that the block cursor on memo line 1 contains that selected character. Now move the block cursor to the next character position (to the right) using key 1.
8. Using the Data Set Memory To change characters entered on memo lines 1 or 2 • The menu select keys (Figure 1) allow you to move the block cursor to the left or right without writing characters on the memo text line. • To replace a character on one of the memo lines, move the block cursor to the position to be modified by using key or by using either menu select key. When the left the block cursor is in the desired position, select the replacement character using keys 3 or 4.
8. Using the Data Set Memory To enter characters on the data-set-name line • Leave the block cursor in it’s initial position on the dataset-name line key 3 or 4) to the Move the underline cursor (using desired character. • When the desired character is selected (by placing the underline cursor under the character) note that the block cursor on the data-set-name line contains that selected character. • Now move the block cursor to the next character position • (to the right) using key 2.
8. Using the Data Set Memory 8.7 Data Set Directory A directory of all data sets is provided: the directory will show the data set number, the assigned alphanumeric name if any and a flag (Û) to indicate whether or not the data set is filled with user data. Access to the DATA SET DIRECTORY is provided on the LOWER LEVEL MENU. Locate and highlight the DATA SET DIRECTORY box. Press the bottom INCREMENT/DECREMENT key to turn on the directory.
8. Using the Data Set Memory INCREMENT/DECREMENT key corresponding to the highlighted data set. Double key press the INCREMENT/DECREMENT key ( ) corresponding to this box, to access A-SCAN PREVIEW. The top display box will now show DATA SET PREVIEW: A-scans Selecting a data set from the directory will cause that data set to appear in the DATA SET NAME box and also in the UPPER LEVEL MENU A-scan display under the MEM select function. The DATA SET DIRECTORY will also be closed with this action.
9. Calibrating the A-scan Display 9.1 General Notes on Calibration Before the USN52 L can be used for flaw detection or thickness measurement, the horizontal and vertical axes of the A-scan display must be calibrated. Calibration assures that: 1. horizontal range of the A-scan display is adequate to display the entire thickness of the test object, 2. horizontal position of echo signals can be used to determine distance to discontinuity or backwall, 3.
9. Calibrating the A-scan Display 9.2 Initial Instrument Settings 9.3 Calibration - Single Element Probe Prior to calibrating the USN52 L, set the functions below as shown. General procedure: Menu BASIC RCVR PULS S-CAL Function DELAY RECTIF. REJECT ZERO Setting 0.0 µs Best image OFF 0.0 µs 1. Turn on the USN52 L and set initial instrument settings per Section 9.2. 2. Set PULSER (PULS menu) to SINGLE: 3.
9. Calibrating the A-scan Display Sample specific procedure: 9. Adjust ZERO to place the leading edge of the backwall echo signal at the second vertical graticule division (see illustration NOTE: The following procedure is an example only. It requires a steel, 1 inch thick test block (for example, an IIW or step block), couplant, and a single element contact probe. The A-scan will be calibrated to a depth range of 5 inches of steel. 1. Turn on the USN52 L and set initial instrument settings per Section 9.
9. Calibrating the A-scan Display 8. Adjust GAIN until the thick section backwall echo signal is at a suitable amplitude: , 9.4 Calibration - Dual Element (TR) Probe General procedure: NOTE: This procedure requires either two test blocks of different thickness or a stepped block. Reference thicknesses should cover the range of thicknesses or distances to be inspected. 1. Turn on the USN52 L and set initial instrument settings per Section 9.2. 2. Set PULSER (PULS menu) to DUAL: 3.
9. Calibrating the A-scan Display 6. Couple the probe to the 0.100 inch thick section. 7. Adjust GAIN until the echo signal is at a suitable amplitude (see illustration at right): , NOTE: When measuring thickness using a low A-scan range, it is sometimes helpful to use REJECT (PULS menu) to produce a sharply rising leading edge on significant echo signals. 8. Adjust ZERO (S-CAL menu) to place the leading edge of the backwall echo at the second vertical division (see illustration at right): 9.
9. Calibrating the A-scan Display 9.5 Calibration - Angle Beam Probe 7. Adjust MTL VEL (S-CAL menu) to place the leading edge of the second reference echo signal at its correct horizontal General procedure: NOTE: This procedure requires a test block, suitable for use with angle beam probes, which will produce reference echo signals at two different, known, soundpath distances from the probe. Commonly used standard blocks include IIW, DSC, DC, and Angle Beam Calibration Block. 1.
9. Calibrating the A-scan Display 5. Set RANGE to 10.00 in: Probe 6. Couple the probe to the IIW block as shown at right and optimize the echo signal from the 4 inch radiused surface. 7. Adjust GAIN as necessary throughout this procedure to keep reference echo signals at suitable levels (see illustration at right): , 8. Set MTL VEL to 1320 in/s: , 9.
10. Using the Flaw Alarm / Measurement Gate 10. Using the Flaw Alarm / Measurement Gate 10.1 Purpose of the Gate The gate circuit of the USN52 L, displayed as a horizontal bar in the A-scan, monitors a selected depth range in the material under test and serves two important functions: • It activates the built-in alarm when an echo signal in the gate exceeds (positive logic) or drops below (negative logic) the user set threshold amplitude.
10. Using the Flaw Alarm / Measurement Gate 10.3 Adjusting Gate Parameters If the gate is enabled, the following parameters must be set based on the requirements of the application: a-THRESH - To assure activation of the flaw alarm and valid measurement data the threshold must be set to a level that any significant echo signal will violate. a-START - The leading (left) edge of the gate bar must be positioned so that any flaw or measurement echo signal will occur to its right in the A-scan display.
Using the Flaw Alarm / Measurement Gate 11.10. Using DAC/TCG 10.4 Frozen Screen Evaluation If either gate start, threshold, or width is modified while the A-scan is frozen, the movable-gate screen freeze mode (behind the freeze) is entered. When this mode is selected, a gate bar will appear under the freeze symbol. When the screen is placed in freeze mode, gate start, gate width, and gate threshold (and their remote commands) will continue to function while allowing the screen to remain in freeze mode.
11. Using DAC/TCG 11. Using DAC/TCG 11.1 Description of DAC/TCG 11.2 Using DAC/TCG The USN52 L is equipped with Time Corrected Gain (TCG) and Distance Amplitude Curve (DAC) functions, located in the TCG menu. A DAC curve is programmed using a series of echo signals at various depths covering the range of depths to be inspected in the test material.
11. Using DAC/TCG When programming a TCG/DAC curve, data points may be entered in any order. The first point recorded is the amplitude reference echo (see note below). Calibrate the A-scan (Chapter 9) and proceed as follows: 1. Couple the probe to the reference block or test piece and optimize the first (reference) echo. 2.
11. Using DAC/TCG NOTE: Data points after the first one will be automatically adjusted to the same amplitude as the first reference echo. Adjust gain for remaining echoes to at least 80% screen height for optimal results. While programming the curve, the USN52 L keeps track of gain relative to the first reference echo. 10. After the final point has been recorded, activate TCG by pressing aligned with DAC/TCG.
11. Using DAC/TCG To activate DAC (curve) press next to DAC/TCG. When DAC is active, signal amplitudes are not compensated, but the programmed curve is displayed: remains in DAC memory, TCG or DAC can be reactivated by pressing . aligned To erase the curve from memory, simultaneously press with DAC/TCG (record mode). Either record a new curve or press to turn DAC/TCG off. NOTES: 1. Remember or record reference gain after TCG or DAC is enabled. dB REF can be used. 2.
11. Using DAC/TCG 12. Using dB REF 12.1 Description of dB REF dB REF stores, as a reference echo, the amplitude of the highest echo signal in the gate for comparison against echoes from discontinuities. Reference and incremental gain values are also stored and displayed in the GAIN function box, as shown below. Note that the incremental gain value replaces the word “GAIN”. Incremental GAIN shows any change, relative to reference gain, since dB REF was enabled. A positive value (+xx.
12. Using db REF NOTE: Reference and discontinuity echoes cannot exceed 127% screen height. This is the maximum amplitude that can be evaluated. The reference echo must be the highest amplitude signal in the gate, as illustrated below. During inspection, when a signal violates threshold in the gate, the H= value displayed in the measurement line indicates its amplitude in dB relative to the reference echo. Echo signals lower in amplitude are shown as negative (-) values.
13. Calibrating for Digital Measurement 13.1 Preparing to Calibrate Before calibrating for digital thickness or flaw distance measurements, the A-scan display must be calibrated. Follow the procedures in Chapter 9 to prepare initial instrument settings and calibrate the A-scan display for the type of probe to be used. To obtain correct digital thickness or distance measurements the USN52 L must be calibrated for the specific material to be measured.
13. Calibrating for Digital Measurement 13.2 0 TO 1st - Single Element Contact Probe 0 TO 1st mode can be used for measuring either thickness or distance to flaw. Calibration requires a test block of the same material, velocity of sound, and temperature as the material to be measured. Precise thickness or distance to artificial flaws must be known. Use the following procedure to calibrate in 0 TO 1st mode, using a single element contact probe. 1. Calibrate the A-scan display according to Sections 9.2 and 9.
13. Calibrating for Digital Measurement 11. Adjust the MTL VEL until the displayed S= value matches the thickness (or flaw distance) of test block: 12. Optimize the echo that represents the lower end of the expected measurement range. Assure that the correct echo appears within the gate and exceeds threshold level. If necessary, adjust GAIN. surements will occur within the gate. If necessary, adjust aSTART and a-WIDTH until these conditions are met.
13. Calibrating for Digital Measurement 13.3 0 TO 1st - Single Element Delay Probe Calibrating the USN52 L for 0 TO 1st digital measurement with a delay line probe is the same as with a contact probe, except that the initial pulse is separated from the acoustic zero point by the delay line. In the A-scan display, the acoustic zero point corresponds to the echo signal from the interface between the delay line and surface of the test object (see illustration on page 76).
13. Calibrating for Digital Measurement 11. Adjust the MTL VEL until the displayed S= value matches the known thickness (or flaw distance) of the test block: 12. Optimize the reference echo that represents the lower end of the expected measurement range. Check to assure that the correct echo appears within the gate and has sufficient amplitude to exceed threshold level. If necessary, adjust GAIN. surements will occur within the gate. If necessary, adjust aSTART and a-WIDTH until these conditions are met.
13. Calibrating for Digital Measurement Calibration requires a test block of the same material and velocity of sound as the material to be measured. At least two thicknesses are required, representing the upper and lower ends of the expected measurement range. The precise thickness, or distance to artificial flaws, must be known. Use the following procedure to calibrate in 0 TO 1st mode, using a dual element probe. 1. Calibrate the A-scan display according to Sections 8.2 and 8.4.
13. Calibrating for Digital Measurement 11. Adjust the MTL VEL until the displayed S= value matches the known thickness (or flaw distance) of the test block: The next illustration shows a typical A-scan and measurement line display for 0 TO 1st measurement with a dual element probe. 12. Optimize the reference echo that represents the lower end of the expected measurement range. Check to assure that the correct echo appears within the gate and has sufficient amplitude to exceed threshold level.
13. Calibrating for Digital Measurement 13.5 MULTECHO - Single Element Contact Probe MULTECHO mode is intended primarily for thickness measurement using multiple backwall echoes. Calibration requires a test block of the same material, velocity of sound, and temperature as the material to be measured. The precise thickness must be known and, for best results, should be equal to, or slightly greater than the greatest thickness to be measured.
13. Calibrating for Digital Measurement 8. Select b-THRESH by simultaneously pressing with a-THRESH. aligned b-START is set as a percent of the current a-WIDTH setting. For example, if a-WIDTH is 0.300 inch and b-START is 10%, then gate b starts 0.030 inch beyond the leading edge of gate a when no signal is in the gate, as shown in the following illustration. 9.
13. Calibrating for Digital Measurement WARNING! To avoid false readings, do not allow the first echo signal, or any nonrelevant indications, to encroach on gate b. Measurement will be determined by the first intersection between any signal (leading or trailing edge) and gate bar. 12. Select the S-CAL menu: 13. Observe the S= value in the measurement line and obtain a stable reading.
13. Calibrating for Digital Measurement Use the following procedure to calibrate in MULTECHO mode, using a single element delay probe. 1. Calibrate the A-scan display according to Sections 8.2 and 8.3. Use the same test block for both A-scan and digital calibration. The USN52 L is now calibrated and ready to perform thickness measurements, within the calibrated range, on parts of the same material, velocity of sound, and temperature as that of the test block.
13. Calibrating for Digital Measurement These considerations will be covered in detail later in this procedure. 3. Select the GATE menu: Since the second echo is typically lower in amplitude than the first, gate b threshold should be set so that points of intersection correspond, as illustrated below. 4. Adjust a-START and a-WIDTH so that two successive backwall echoes from both the thinnest and thickest sections to be measured will occur in the gate: 5.
13. Calibrating for Digital Measurement gate b starts 0.030 inch beyond the leading edge of gate a when no signal is in the gate, as illustrated below. When an echo signal occurs in gate a, the start of gate b automatically changes to the b-START interval after the first echo in gate a. In the example above, an echo signal at 0.040 inch in gate a causes gate b to start 0.030 inch (10% of a-WIDTH)) after the first echo in gate a, or at 0.070 inch. This is shown in the next illustration.
13. Calibrating for Digital Measurement WARNING! To avoid false readings, do not allow the first echo signal, or any nonrelevant indications, to encroach on gate b. Measurement will be determined by the first intersection between any signal (leading or trailing edge) and gate bar. 12. Select the S-CAL menu: 13. Observe the S= value in the measurement line and obtain a stable reading.
13. Calibrating for Digital Measurement By positioning the gate bars, a and b on opposite sides of the midline (above and below), thinner measurements may be enabled by setting b-START to a smaller value. The advantage of the RF display in applications of this type can be seen in the following idealized illustration. NOTES: 1. Adjustment range for a-THRESH and b-THRESH are as follows (- = below midline): +5% to +45% -5% to -45% 2. RF mode cannot be enabled if display range exceeds 11.
13. Calibrating for Digital Measurement 13.8 Angle Beam Testing - Flaw Location USN52 L trigonometric functions provide information in the measurement line as to the location of a discontinuity detected during an angle beam test. If TOF mode (Section 13.9) is set to FLANK, displayed measurement values relate to the first echo signal in the gate that violates alarm threshold level. In PEAK TOF mode, displayed measurement values are for the highest amplitude signal in the gate. used.
13. Calibrating for Digital Measurement Use the following procedure to calibrate for angle beam flaw location: NOTE: All USN52 L calibration procedures require a reference standard of the same material, velocity of sound, and temperature as the material to be inspected. 1. Calibrate the A-scan display according to Sections 9.2 and 9.5. Use the same test block for both A-scan and digital calibration. 2. Set MEASURE function (lower level) to 0 TO 1st: , or , or , 3.
13. Calibrating for Digital Measurement NOTE: Recalibrate if a probe or wedge with a different ANGLE or X-VALUE is put into use. To disable angle beam flaw location and remove S=, P= and D= from the measurement line, turn the ANGLE function (menu 9) OFF: , 13.9 TOF Mode - FLANK and PEAK The TOF, time of flight function (lower level menus) determines the way in which the USN52 L measures thickness or distance.
13. Calibrating for Digital Measurement When AUTOCAL is on, the MENU BOXES for the S-CAL Menu will be modified by replacing the material velocity and zero menu boxes with boxes as shown below. GAIN 30.00 Db CAL a-START 1.000 in. S-REF 1.000 in. AUTOCAL Menu Boxes When the user begins the AUTOCAL procedure, the CAL MENU box appears as shown above. The second line of the CAL box indicates current calibration step. It starts empty, meaning that the AUTOCAL operation has not begun.
13. Calibrating for Digital Measurement If an error is detected when the calculations are performed, the following message will be written to the screen and AUTOCAL will be ended. “AutoCal error! Hit KEY to continue.” If any of the following conditions are detected at calculation time, an error message will be displayed and the calculations will be aborted. • • • • • • • S-ref = value entered by operator corresponding to test block thickness. TOF = time of flight recorded by the USN for the test block.
14. Digital Thickness / Distance Measurement 14.1 Before Taking Measurements The measurement line of the USN 52 L provides a digital display of wall thickness or distance to flaw along the soundpath. Before digital readings can be taken: 1. Select a probe that is suitable for the application. 14.2 Taking Digital Measurements NOTE: This procedure applies to measurement of parts at ambient temperature. Special procedures may be required for objects with elevated surface or internal temperatures.
14. Digital Thickness/Distance Measurement When using MULTECHO mode, be sure to observe gate b to verify that the correct backwall multiple has been detected. Purpose and operation of gate b are described in detail in Sections 13.5 through 13.7. To assure the best measurement in FLANK TOF mode, amplitude of significant backwall or discontinuity echo signal(s) of the test object should be approximately the same as the amplitude of the corresponding echo signal(s) from the test block during calibration.
15. Operating the On-board Data Logger 15.1 Introduction The on board Data Logger of the USN52 L provides a simple and reliable way to record thickness readings. Displayed readings are stored in one or more files by pressing or optional Remote Send Switch. A file is a group of Data Logger memory locations for storing readings, one reading per location, and reporting measurement data. File size is determined automatically when the operator sets the desired number of files, up to a maximum of 99.
15. Operating the On-board Data Logger 15.2 Setting Number of Files Readings can not be stored in the Data Logger until the desired number of files has been set and one file has been selected to receive readings. Number of files can only be set when Data Logger memory is clear. Use the following procedure to set number of files: 1. Switch to the lower level menus: or 2.
15. Operating the On-board Data Logger No. of Locations = INT (2500 ÷ No. of Files) Table 15-1: Locations per File Based on Number of Files # Files 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 # Loc. per File 2500 1250 833 625 500 416 357 312 277 250 227 208 192 178 166 156 147 138 131 125 119 113 108 104 100 USN52 L Operating Manual # Files 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 # Loc.
15. Operating the On-board Data Logger 15.3 Selecting a File Before readings can be stored in the Data Logger, one of the files created by the procedure in Section 15.2 must be selected to receive the data. The USN52 L automatically returns to the last selected file when the instrument is switched on or when the data logger column in menu 8 is accessed. To select a different file number: 1. Switch to the lower level menus: or 2.
15. Operating the On-board Data Logger 15.4 Logging Readings into Memory Displayed measurement line values are as follows: To store thickness or distance measurements in the Data Logger, the following functions must be set as shown: LOC: The active location number in the selected file. The next reading will be stored in this location. • FILE NUMBER function must be set to EMPTY XX or ACTIVE XX, that is, a file with at least one empty location must be selected.
15. Operating the On-board Data Logger 15.5 Selecting Locations and Reviewing Readings From the A-scan Display: Any location in the currently selected file number, and the value stored in that location, can be selected and viewed either from the A-scan display or by selecting menu 8 from the lower menu level. When the Data Logger is enabled, the measurement line shows the current location number (LOC:) and the value (VAL:) stored in that location.
15. Operating the On-board Data Logger 15.6 Clearing and Replacing Readings The value stored in any location in the currently selected file number can be cleared from memory either from the A-scan display or by selecting menu 8 from the lower menu level. Follow the applicable procedure in this section to clear (erase) a stored reading from Data Logger memory. WARNING! Clearing a stored reading permanently erases it from memory. It cannot be recovered.
15. Operating the On-board Data Logger 15.7 Clearing Selected Files All locations of the selected file have been cleared and are available for recording of measurement data. To clear an entire file, Data Logger menu (lower level) must be displayed. A file cannot be cleared from the A-scan display. All data in the cleared file will be permanently lost. However, the contents of one file or all files may be transferred to a dot matrix printer or personal computer prior to clearing.
15. Operating the On-board Data Logger WARNING! Clearing the Data Logger will permanently erase all data stored in all files. For extended storage, files should be transferred to a computer for storage on disk or tape. Data transfer utility software is available from Krautkramer for this purpose. Contact your local Krautkramer representative for information. 4. Chapter 16 provides information needed to interface the USN52 L with an external device, such as a printer or computer, for file storage.
16. Using Peripherals with the USN52 L 16. Using Peripherals with the USN 52 16.1 RS-232 I/O Interface Table 16-1: RS-232 Output via COPY Key The RS-232 I/O port is a 7-pin Lemo #0B connector located on the rear panel (see illustration next page). It is used to transmit data to an external device, such as a printer, an IBM compatible personal computer, or Krautkramer’s DR1 Data Recorder.
16. Using Peripherals with the USN52 L Epson compatible MEMO DUMP All non-empty MEMOS (If MEMO function is enabled) NOTE: A special cable is required for each type of device. Refer to Chapter 2 or applicable section of this chapter. 16.2 Connecting a Peripheral Device Peripheral devices are connected to the RS-232 I/O port on the rear of the USN52 L. Special cables, available from Krautkramer, must be used.
16. Using Peripherals with the USN52 L To change the RS-232 protocol: 1. If necessary, select lower level menu: Connect the printer to the RS-232 I/O port of the USN52 L, using the cable specified in the note above. If necessary, set RS-232 protocol by following the procedure in Section 16.2. 2. Frame the column containing the RS-232 protocol functions: or ; or To print a HARD COPY of the display: 3.
16. Using Peripherals with the USN52 L 6. With the desired image and data in the USN52 L display, initiate the printout: The USN52 L “captures” the image at the instant the COPY key is pressed. Although the A-scan display remains active, the printed image will show the display as it was when the COPY key was pressed. USN52 L keypad controls are disabled until the printout has been completed. while the A-scan is displayed. Only the currently selected file will be reported.
16. Using Peripherals with the USN52 L Data Logger Report Format To print a Data Logger Report showing one file or all files: 1. Select lower level menu: 2. Frame the column, which contains the COPY MODE function: or ; or 3. Set COPY MODE to REPORT: 4. Frame the Data Logger functions (lower level menu): ; or Report format is the same, whether data is sent to a printer or to a personal computer. The procedure for transmitting data to a computer is in Section 16.5.
16. Using Peripherals with the USN52 L KRAUTKRAMER USN52 L REPORT THICKNESS DATA LOGGER ——— FILE HEADER ———— COMPANY: FILE NUMBER: 1 FILE NAME: SERIAL NUMBER: 00007935 REVISION: A.10 OPERATOR ID: PROBE ID: DATE: COMMENTS: —— FILE STATISTICS —— READINGS 10 MINIMUM 0.100 in AT LOC 1, 6 MAXIMUM 0.500 in AT LOC 5, 10 RANGE 0.400 in MEAN 0.300 in ——— READINGS ——— 1 0.100 in 2 0.200 in 3 0.300 in 4 0.400 in 5 0.500 in 6 0.100 in 7 0.200 in 8 0.300 in 9 0.400 in 10 0.
16. Using Peripherals with the USN52 L 16.5 Transferring Files to a Personal Computer Data Logger files can be transmitted, via the RS-232 I/O port, to an IBM compatible personal computer. Files are automatically formatted and transmitted as ASCII text files. Once saved on disk, data can be viewed on screen, printed, or transferred to standard word processing, data base, spreadsheet, and applications software.
16. Using Peripherals with the USN52 L To transmit a Data Logger Report showing one file or all files: Data Logger Report Format 1. Select lower level menu: Refer to Section 16.4 for a detailed description. 2. Frame the column, which contains the COPY MODE function: or ; or 16.6 Printing Display and Parameters 3. Set COPY MODE to REPORT: 4. Frame the Data Logger functions (lower level menu): ; or or 5. Under the FILE NUMBER function, select the desired file, ACTIVE XX or FULL XX.
16. Using Peripherals with the USN52 L To print the display + parameter report: 1. Select lower level menu: 2. Frame the column, which contains the COPY MODE function: or ; or 3. Set COPY MODE to DISP + PDUMP: 4. Return to the A-scan display: 16.7 Sending Readings to the DR1 Data Recorder NOTE: Output is formatted for Krautkramer model DR1 Data Recorder.
16. Using Peripherals with the USN52 L Connect the DR1 to the RS-232 I/O port using the cable specified in the note above. Set up the DR1 according to the instructions in the DR1 Operating Manual. Be sure the DR1 is on and ready to receive either a material velocity or a thickness reading in the desired file and location. 4. Frame the Data Logger functions (lower level menu): ; or or 5. Set FILE MODE to OFF: This disables the on-board Data Logger.
16. Using Peripherals with the USN52 L 16.8 Sending Readings to Other Devices Digital measurements displayed in the measurement line can be transmitted via the RS-232 I/O port to any compatible device, such as a personal computer, printer, or other RS-232 recording instrument. In most cases, the displayed thickness (S=) value will be sent.
16. Using Peripherals with the USN52 L Byte # USN52 L Operating Manual X.XXX IN XX.XX IN XX.XX MM XXX.X MM 1 2 Space Digit Space Digit Space Digit Space Digit 3 D.P. Digit Digit Digit 4 Digit D.P. D.P. Digit 5 6 Digit Digit Digit Digit Digit Digit D.P. Digit 7 Space Space Space Space 8 I 9 10 N Space N Space M Space M Space 11 Space Space Space Space 12 CR CR 13 LF I M CR LF LF D.P.
16. Using Peripherals with the USN52 L 16.9 Analog Output Amplitude and time of flight (distance) analog outputs are provided via the 7-pin AUX port shown below. Amplitude output is scaled so that 2.5 volts corresponds to a signal of 128% of screen height and 0 volts corresponds to no signal in the gate. In RF display mode, 1.25 volts corresponds to a signal of either +64% or -64% of screen height.
16. Using Peripherals with the USN52 L This section provides general instructions on command sequence format. Function codes, along with the values for the options associated with the functions, are provided in tables in this section. To execute a keypad operation or adjust the setting of a menu function, transmit the required escape sequence using the format below. Refer to the tables later in this section for the 2 digit code, acceptable value range, and resolution.
16. Using Peripherals with the USN52 L The GAIN function is an exception. Values are entered in steps of 0.1 as follows: To set: 18.0 dB 39.1 dB Enter value: 18 39.1 To request the present status, or value, of any function, use the following sequence: «[Esc]»«Code»«[Return]» The USN52 R will respond by transmitting the current value to the PC or terminal.
16. Using Peripherals with the USN52 L Function Code Range A-scan amplitude points DA 220 points zoom: 250 points RF mode: 2 times number of points Resolution Function Code Range Resolution BAUD RATE BR 1: 300 2: 600 3: 1200 4: 2400 5: 4800 6: 9600 1 a-START AD 0 - 200 in 0 - 5000 mm 0.001" 0.1mm a-THRESH AT 10 - 90% -45 - 45% in RF Calibration Mode CR 1 0: Cal mode inactive 1 1: REC Mode 2: REC echo #1 3: REC echo #2 a-WIDTH AW .05 - 200 in 1.0 - 5000 mm 0.001 0.
16. Using Peripherals with the USN52 L Function Code Range Resolution DAC/TCG Mode=TCG DAC ECHO (key) DE 0: OFF 1: ON 1 DAC/TCG Mode DM 1 DAMPING DI 0: OFF 1: TCG 0: 1K 1: 150 DATA LOGGER CONFIG DL 0: ALL CLEAR 1: DATA LOGGER CONFIGURED 1 DATA SET ND 1 - 100 1 DATA SET NAME (requires DS# parameter) NA Up to 8 characters 1 dB REF (key) DR 0-1 dB STEP DS 6.5 - 24 dB Page 124 2: DAC 3: REC 2: 75 3: 50 1 0.1 Function Code dB STEP (key) ST DELAY ZE -20 - 999 µs 0.
16. Using Peripherals with the USN52 L Function Code EVALUATION MODE EV FILE NUMBER FN Range Resolution 0: TCG only 1: TCG and DGS 0: ALL CLEAR,ALL FILES (no file selected) 1 1 Function Code Range Resolution GAIN DB 0 - 110 dB 0.
16. Using Peripherals with the USN52 L Function Code Range Resolution PRF RR 0: HIGH 1: LOW 1 1 PROJ DISTANCE (Query only) PR X.X.X.X in or mm 0.001 to 9.999 in; 0.1 to 500 mm 1 PULSER PG 1: SINGLE 2: DUAL 1 39400 - 394000 in/µs; 1 1000 - 9999 m/s RANGE DW .2 - 200 in 5 - 5000 mm .001 in 0.1 mm OD 2.048 - 78.77 in 52 mm - 2000 mm .001 in 0.
16. Using Peripherals with the USN52 L Function Code Range Resolution Function Code Range Resolution REJECT RJ 0 - 80 % 1 VERSION VR XX STORE SD 0: OFF 1: ON 1 X-VALUE XV 0 - 200 in .001 ZERO DZ TH .004 - 200 in .001 0 - 1600 µs 0.1 THICKNESS TOF MODE TF 0: FLANK 1: PEAK 1 ZOOM ZO UPLOAD DATA SET FROM PC UD 768 bytes VALUE (Query only) VA EMPTY ERROR X.X.X.
17. Technical Specifications NOTE: Adjustment ranges and increments for all menu functions are given in Chapter 7. Pulser Type: Spike / excitation pulse Pulse Repetition Frequency: Based on HIGH or LOW REP-RATE selection and RANGE setting as follows: HIGH setting: LOW setting: Rep Rate 905 Hz 452 Hz 226 Hz 113 Hz 452 Hz 226 Hz 113 Hz 56 Hz RANGE (inches of steel, .2330 in/µs) 0.182 to 11.65 11.66 to 23.2 23.3 to 46.4 46.5 to 231 0.182 to 11.65 11.66 to 23.2 23.3 to 46.4 46.
17. Technical Specifications Frequency Range (-3 dB points): 0.25 MHz to 4.9 MHz 0.4 MHz to 10.2 MHz 2.3 MHz to 10.8 MHz 1.7 MHz to 8.2 MHz Unit of Measure: Selectable inch or metric Language: Selectable English, French, Spanish, Italian, Portuguese, German, Swedish, Danish, Norwegian, Finnish, Dutch, and Russian Gain: 0 to 110 dB controllable in 0.1 dB steps; selectable gain steps of 0.1, 0.5, 1.0, 2.0, 6.0, and a user programmable step of 6.5 to 24 dB Range: 0.
17. Technical Specifications Vertical Display Resolution: 1% of full screen height Measurement Modes: Zero to first echo, 0.001 inch resolution to 9.999 inches; 0.2 inch to 9.99 resolution 0.001 inches; 10 inches to 99.9 inches resolution 0.01 inches; 100 inches+ resolution 0.1 inch; From 5 mm to 999.9 mm resolution 0.
17.
18. Worldwide Service Centers Krautkramer Service Manager 50 Industrial Park Road Lewistown, PA 17044 Telephone: (717) 242-0320 Fax: (717) 248-7211 Buehler Krautkramer Univ. of Warwick Science Park Millburn Hill Road Coventry, England CV4 7HS Telephone: 011-44-1-203-690069 Fax: 011-44-1-203-693032 Krautkramer Cincinnati Service Center 11503 Springfield Pike Lower Level Cincinnati, OH 45246-3550 Telephone: (513) 772-4745 Fax: (513) 772-4746 Krautkramer France Ltd. ZAC Sans Souci 68 chemin des Ormeaux F .
Index Page Page 0 B 0 TO 1st measurement ............................................50 b-START ..................................................... 37, 84, 87 b-THRESH .................................................. 37, 85, 88 BASIC Menu ...................................................... 31, 33 Batteries ................................................................... 14 battery indicator .................................................. 24 Battery indicator ...............................
Index Page 0 TO 1st - Dual .....................................................82 MULTECHO - Contact .......................................... 84 MULTECHO - Delay .............................................. 87 Computer remote control of USN52 L ............................... 121 sending readings ............................................... 118 transfer Data Logger files ................................. 114 COPY key .................................................................20 COPY MODE .....
Index Page F FILE MODE ..............................................................43 FILE NUMBER .......................................................... 43 FLANK ..................................... 50, 85, 88, 92, 94, 98 FREEZE ALL ............................................................ 41 FREEZE key ............................................................. 19 FREEZE MODE ........................................................41 FREEZE PEAK ................................................
Index Page MEMORY Menu ........................................................39 Menu Display ...........................................................22 Menu Functions ...................................................... 33 Menu Guide ............................................................. 31 MENU key .................................................................18 Menus - Lower Level .......................... 32, 41, 44, 49 Menus - Upper Level ...............................................
Index Page REPORT .......................................................... 46, 111 RF display ......................................................... 35, 90 RS-232 BAUD RATE .......................................................... 45 LENGTH ................................................................ 45 Output (table) ...................................................... 108 PARITY .................................................................. 45 Protocol .....................................
