NanoTrace Moisture Analyzer DF-745 ESC Menu Next Enter Instruction Manual Firmware Version 3.1.
The Delta F Difference Your NanoTrace Moisture Analyzer has been designed, manufactured and is supported under the tightest of controls, thus helping to insure the highest possible standards of quality. Every analyzer that Delta F manufactures is tested and operated on a variety of gas concentrations to insure that it functions properly when you receive it. The certificate of calibration assures your analyzer has been calibrated on gases that are traceable to NIST standards.
Read Me First… Unpacking Procedure Follow the procedure below to unpack your NanoTrace Moisture Analyzer 1. Examine the condition of the packaging and its contents. If any damage is apparent, immediately notify the carrier and Delta F. Do not proceed with the installation. 2. Check the contents against the packing slip to make sure the shipment is complete. Unattached equipment may be shipped with the analyzer in supplemental packaging. Shortages should be reported to Delta F immediately. 3.
Unlike much UHP analytical equipment, NanoTrace Moisture Analyzer does not require constant maintenance. However the maintenance intervals for zero and span calibrations, must be determined and followed carefully. Thank You Thank you for selecting the NanoTrace Moisture Analyzer. Delta F designs, manufactures, exhaustively tests, and supports every analyzer under the tightest quality controls.
1 Table of Contents 1 Table of Contents .................................................................... 1 1.1 2 Table of Figures...................................................................................................... 3 Cautions.................................................................................... 7 2.1 2.2 3 Symbols and Explanations...................................................................................... 7 Important Warnings ...............................
7.4.3 7.4.4 7.4.5 7.4.6 7.4.7 7.4.8 7.4.9 7.4.10 7.4.11 7.4.12 7.4.13 7.4.14 7.4.15 7.4.16 8 Calibrate Menu........................................................................................ 38 Data History Routine ............................................................................... 42 Data Downloader Routine........................................................................ 44 View Logs Menu .....................................................................................
1.1 Table of Figures Figure 1: Overall View.............................................................................................................................. 11 Figure 2: Major Internal Components........................................................................................................ 13 Figure 3: Aspirator Installation ................................................................................................................. 14 Figure 4: Rear Gas Connections ...............
Figure 49: Alarm Setup Menu................................................................................................................... 51 Figure 50: Alarm Setup Screen ................................................................................................................. 52 Figure 51: Temperature Alarm Setup ........................................................................................................ 53 Figure 52: Pressure Alarm Setup.............................................
Table of Tables Table 1: Recommended Sample Outlet Vacuum Pressure .......................................................................... 21 Table 2: Pin-out of Serial Comm Connector J5.......................................................................................... 32 Table 3: Serial Communications Connections ........................................................................................... 32 Table 4: Pin-Out of Moisture Signal Output Connector J4 ...................................
2 Cautions There are a number of warnings and cautions that must be observed to avoid damage to the analyzer as well to insure the safety of its users. The analyzer must be operated in a manner specified in this manual. Delta F cannot be responsible for direct or consequential damages that result from installing or operating the analyzer in a manner not described in this manual. Importantly, the analyzer has been designed for use with inert, non-toxic, non-combustible sample gases only.
CAUTION Do not setup or operate this analyzer without a complete understanding of the instructions in this manual. Do not connect this Analyzer to a power source until all signal and plumbing connections are made. CAUTION This analyzer must be operated in a manner consistent with its intended use and as specified in this manual. EMI DISCLAIMER This Analyzer generates and uses small amounts of radio frequency energy.
3 Specifications 3.1 Moisture Lowest Detection Level (LDL): 2 ppb @ Constant Conditions Resolution: Analytical (Smallest Detectable Change): .5 ppb Display: 100 ppt Accuracy: Greater of ±3% of reading or ±1 ppb @ Constant Conditions Speed of Response: Typically 10 minutes to reach 90 percent of an upward step change Upset Recovery Time: Typically less than 5 minutes from a high ppb upset to within 10 ppb of the previously stable reading.
Audible/Visual Alarm Status Indicators: Four Moisture levels, Temperature, Moisture cell Diagnostic, Zero Verification or Calibration in Process, Moisture Analyzer off-line, Analog output freeze during calibration. Alarm Relays: Four non-latching, independently assignable to moisture alarms or to moisture calibration-in-process indicator. SPDT contacts rated at 1 Amp @ 30 VDC. Fail safe action upon loss of power to alarm condition. Not designed to switch AC power.
Figure 1: Overall View Specifications DF-745 11 6.94 [176.28] 2 1 RLY1-COM KEY KEY KEY 7 6 5 RX- ~ ~ 7.71 [195.77] 1 2 NOT USED 17.08 [433.71] 16.58 [421.01] 16.33 [414.78] 9.45 [239.90] ~ ~ ~ 4-20mA- 3 1 RX+ 4 5 6 7 8 3 2 TX+ 4-20mA+ 1 2 3 4 5 6 7 8 4 AOUT- AOUT+ GND 8 TX- RLY3-COM KEY GND RLY3-NC 4 3 RLY3-NO RLY4-COM 5 RLY1-NC RLY1-NO 23.93 [607.70] 22.38 [568.45] (19.00 [482.
4 Installation, Start Up and Shut Down Installation of the analyzer requires the following steps be followed: Connecting the N2/Air supply to the aspirator Connecting an exhaust tube to the aspirator outlet, if needed Connecting the pneumatic pressure service to the pneumatic inlet fitting Connecting the sample gas line to the analyzer inlet fitting Making the power connection to the analyzer POWER SWITCH USB PORT H2O SENSOR Figure 2: Major Internal Components Installation, Start Up
4.1 Analyzer Installation 4.1.1 Vacuum Source 4.1.1.1 Aspirator The standard vacuum source provided with the DF-745 analyzer is a factory installed aspirator as shown in Figure 3. Aspirator installation with the optional gas panel is identical. SAMPLE VENT 80 psi IN ASPIRATOR Figure 3: Aspirator Installation A regulated source of dry compressed gas (either N2 or air) is required at 80psi and a flow rate of approximately 15 slpm.
Be sure to use a backup wrench when making all connections to the aspirator. 4.1.1.2 Vacuum Pump An optional vacuum pump can be purchased for those cases where there is insufficient gas pressure or flow to operate the aspirator, or when the analyzer is installed in a portable cart and connection to a continuous gas supply is inconvenient. See page 25 for information on the installation of the optional vacuum pump. 4.1.
See page 25 for information on the installation of the optional vacuum pump.
4.1.4 Electrical Connections Open the door and locate the power switch in the center of the upper rail. Be sure it is in the OFF position. Plug the line cord (supplied with 110VAC units only) into the receptacle at the back of the analyzer. Verify the operating voltage is proper according to the label on the rear and connect the line cord to the power source. See Figure 6 and Figure 7. 4.1.
GND 8 GND 8 RLY2-NC 7 RLY4-NC 7 RLY2-NO 6 RLY4-NO 6 RLY2-COM 5 RLY4-COM 5 RLY1-NC 4 RLY3-NC 4 RLY1-NO 3 RLY3-NO 3 RLY1-COM 2 KEY 2 KEY 1 RLY3-COM 1 GND 8 GND 8 TX- 7 KEY 7 KEY 6 AOUT+ 6 RX- 5 AOUT- 5 4 NOT USED 4 3 3 TX+ 2 4-20mA+ 2 RX+ 1 4-20mA- 1 ~ ~ ~ ~ ISOLATION GAS PANEL SHOWN ~ ~ AC INLET Figure 7: AC Power Connections with Optional Gas Panel 18 DF-745 Installation, Start Up and Shut Down
4.2 Analyzer Start Up It is important to note that, if equipped with automatic gas valves, the moisture cell is isolated from gas flow while the analyzer is off power. Open the door and turn on the power using the main power switch inside the analyzer. See Figure 2. The pump, if equipped, should turn on (see page 17) and the analyzer will undergo a series of Diagnostic Procedures while the various startup screens are displayed.
The moisture cell outlet will be connected to the supplied aspirator or, if equipped, to the vacuum pump. The sample inlet to the moisture analyzer, as well as the zero gas inlet, are heated to 60 C. This is done to mitigate any effects of adsorption-desorption of trace moisture on the walls of the tubing. 4.2.2 Gas Pressure and Flow Settings Attention to the setting of gas pressure and flow is critical to proper operation of the analyzer.
e. Use the regulator to adjust the flow through the cell to 1 slpm (2 scfh) as shown on the flowmeter behind the front door. NOTE: This flow rate may be reduced to minimize gas consumption but the flow rate will directly impact the overall system speed of response. f. Confirm that the needle valve on the vacuum source (aspirator) is fully open (CCW). g. Turn on the vacuum source (aspirator) by applying gas to the high pressure inlet. See Figure 3.
valve closes as well. Throughout this process a message appears over the display instructing the user to wait 40 seconds. Once complete, the message disappears and the user may shut the power off with the switch behind the front door that initiates the computer shut down sequence that takes an additional 40 seconds. Additional long-term isolation security can be achieved by closing the valve on the rotameter on the rear of the instrument as well as completely closing the sample inlet regulator.
FLOW METER (FRONT) V1 H 2O MOISTURE SENSOR OUTLET ASPIRATOR WITH BUILT IN VACUUM CONTROL NEEDLE VALVE PI MOISTURE SAMPLE VENT REAR PANEL 80 psi IN TO CREATE VACUUM V2 .
5 Options The following options to the DF-745 are available at the time of order. 5.1 Key Lock An optional key lock can be installed in the door of the analyzer to prevent access to the power switch and other internal components. The lock is supplied with two keys. If the analyzer is operating, the key lock does not prevent adjustments from the front panel. 5.2 Operating Voltage The analyzer can be wired for operation at either 100-120 Volts AC or 200-240 Volts AC.
breaker switch. The pump connection should be made directly to the Moisture Sample Outlet as described in section 5.6.2. TO MOISTURE SENSOR OUTLET PLASTIC TUBING SUPPLIED POWER CORD TO VACUUM PUMP POWER CONNECTOR Figure 11: Vacuum Pump Assembly 5.6.1 Installation of the Vacuum Pump Mount the vacuum pump to the bracket Connect the line from the moisture sample outlet to the needle control valve and vacuum pump Make the electrical power connection to the vacuum pump 5.6.1.
4.92 [124.97] 5.17 [131.32] 4.92 [124.97] Ø.28 [Ø7.14] 4 PL MOUNTING FOR BOTTOM OF BRACKET 3.94 [100.08] Ø.28 [Ø7.14] 4 PL MOUNTING FOR LEFT OR RIGHT SIDE OF BRACKET Ø.28[Ø7.14] 4 PL MOUNTING FOR REAR OF BRACKET 6.89 [175.01] 3.94 [100.08] 2 PL 3.94 [100.08] 2 PL Figure 12: Vacuum Pump Mount Dimensions 7.22 [183.39] 3.23 [81.98] 5.00 [127.00] 10.20 [259.08] 9.58 [243.26] 8.54 [216.79] 4.25 [107.95] 2.18 [55.25] 4.31 [109.35] 6.59 [167.33] 6.18 [156.85] 5.00 [127.
5.6.2 Moisture Sample Gas Outlet Connection to Vacuum Pump The sample gas outlet connection is a ¼ inch compression fitting labeled Moisture Sensor Outlet as shown in Figure 4 and Figure 5. Use the polyethylene tubing provided with the analyzer to connect between the outlet fitting and the ¼ inch fittings on the needle control valve and vacuum pump (included separately). See Figure 11. Open the needle control valve completely.
FLOW METER (FRONT) REAR PANEL MOISTURE SENSOR OUTLET MOISTURE SAMPLE VENT PI H2O EXTERNAL VACUUM PUMP (SUPPLIED LOOSE) .010 ORIFICE VACUUM CONTROL NEEDLE VALVE (SUPPLIED LOOSE) PROCESS INLET Figure 15: Block Diagram of Gas Flow Path and Optional Vacuum Pump FLOW METER (FRONT) MOISTURE SENSOR OUTLET MOISTURE SAMPLE VENT V1 H 2O PI EXTERNAL VACUUM PUMP (SUPPLIED LOOSE) REAR PANEL V2 VACUUM CONTROL NEEDLE VALVE (SUPPLIED LOOSE) .
6 Connecting to External Devices The analyzer can be interfaced to a variety of external devices via the ports on the rear panel. Alarm contacts, voltage, and current outputs, and serial communications are supported. All outputs, analog or digital, are fully isolated from earth ground. NOTE During the six minute warm up period all analog and digital outputs are held to an artificial 0.011ppb reading to avoid the reporting of false readings.
A program to facilitate serial communications is available from Delta F.
The 4-20 mA analog output correlating to the front panel display reading is provided on the rear of the analyzer through connector J4. This output is electrically isolated from all other analyzer outputs, and from chassis (Earth) ground. The maximum load resistance for each is 1K Ohms and the analyzer provides a compliance voltage of approximately 28 VDC. 6.4 Relay Ports – J8, J9 Four form C (SPDT) relays (contact closures) are provided to assign to the various alarms. The contacts are rated at 30 VDC, 1A.
7 User Interface 7.1 Data Display Screen The front panel display consists of the Graphical User Interface (GUI), as displayed on the view screen in Figure 18 below. Figure 18: Data Display Screen The various elements of the main data display screen are as follows: Alarm status indicator – ‘1, etc.’ denotes an alarm condition (if enabled), ‘OK’ denotes no alarm conditions (if enabled). The Data Line, providing the most recent concentration measurement in the large number display.
ESC Menu Next Enter Figure 19: Keypad The ‘Menu’ key activates the menu structure along the top of the GUI interface on the view screen. Once in the menu, the arrow keys ( and ) highlight the various menu features. When the desired selection is highlighted, the right arrow will access the submenu if available (denoted by a right arrow next to the menu text). The ‘Next’ key and the ‘Enter’ key will do this as well. The arrows also enable the entry of numerical parameters as will be described below.
The Main Menu is accessed by pressing the Menu key on the front panel. Use the arrow keys ( and ) to navigate up and down through the list. Select the highlighted item with the Enter key on the front panel. If a menu item is grayed out as shown in Figure 21, then the option is not installed, and as a result the item is not available. Figure 21: Main Menu (without valve option) 7.4.
Figure 23: Isolate Warning While the moisture cell is isolated from gas flow, a warning will appear at the bottom of the main display indicating “Isolated”. 7.4.2 Restore Sample Gas Flow – Optional Figure 24: Restore Sample Gas Flow This command allows the user to return the analyzer gas flow to normal after isolation. 7.4.3 Calibrate Menu “Calibration” of the moisture analyzer is somewhat of a misnomer.
Figure 25: Calibrate Menu 7.4.3.1 Check/Adjust Zero Figure 26: Check/Adjust Zero Menu The Check/Adjust Zero screen displays many pieces of information including a live reading of moisture in ppb (or ppm) and the state of the zero gas control valves. Also depicted are Zero Reference and Zero Offset values. The Zero Reference value is a reflection of the deviation of the instrument’s baseline from what was set at the factory. The zero reference of an instrument from the factory will be 0.00.
A relay is available on the Analog Output Setup Screen (see page 55) to signal that a zero calibration is taking place, and the analog output signal can also be frozen or allowed to update during the calibration process. Figure 27: Check/Adjust Zero Screen 7.4.3.1.1 User Zero Offset Figure 28: User Zero Offset The User Zero Offset function enables the user to add a given moisture ppb value to the displayed concentration.
back and change the value or move to the Done button, followed by hitting the Enter key to leave the screen. Using the ESC key at any time will exit the screen making no changes and return to the main display. 7.4.3.1.2 Do A Manual Zero Figure 29: Manual Zero Screen The manual zero command enables the user to zero the moisture cell in an interactive manner. For this purpose, it is necessary to ensure that moisture free gas (sub ppb) is entering the sensor through the process inlet.
7.4.4 Data History Routine Figure 30: Data History Menu The Data History Screen (Figure 31) enables the user to see the data history displayed in strip chart form on the front display. By default, the data history screen displays data for the most recent 24 hour period sampled at 1 point per minute (fixed) and the y-axis is autoscaling. The Next button can be used to toggle the X axis from 1 day (default), to 1 hour, to 1 week and then to 3 weeks.
Figure 31: Data History Screen Figure 32: Install Media Firmware version 0.6.1 Serial # ND-10016 Model # DF-745 Start time 05-01-2003 03:07 PM End time 05-22-2003 03:07 PM Date Time H2O 5/16/03 5/16/03 5/16/03 5/16/03 5/16/03 5/16/03 1:24 1:25 1:26 1:27 1:28 1:29 PM PM PM PM PM PM 5.423 5.423 5.421 5.416 5.411 5.
7.4.5 Data Downloader Routine Figure 34: Data Downloader Menu The Moisture Data Downloader screen, Figure 35, enables the user to label data with unique location names as well as to view and download specified data. The Next key is used to toggle through the various options on the screen and the arrow keys ( and move up and down through the location list. Figure 35: Data Downloader Screen 7.4.5.
7.4.5.2 View Location Figure 36: View Location Screen The view location function is used to view data previously stored in the system sorted by location. On the Moisture Data Downloader screen Figure 35, use the Next key to move to the list of existing names and then use the arrow keys ( and to select the location desired. Then use the Next key to move to View Location and press Enter. The View Location screen will appear as in Figure 36.
Use the arrow keys ( and to navigate the keyboard and use the Enter key to accept each character. If an error is made use the Next key to move to the Clear Entry key and hit enter. When the location name is complete use the Next key to move the highlight to Accept New Location and hit Enter. The display will return to the Downloader Screen and the name will appear in the list of available locations. 7.4.5.
the event of an Automatic Zero, if it were scheduled. The time to perform the zero and the resulting zero reference are also noted. Figure 40: Zero Log Screen 7.4.6.2 System Error Code Log Figure 41: View System Error Code Log Menu The System Error Log reports functional errors in the moisture system. If the error persists for more than 30 minutes, the code is displayed, if warranted. In addition, a system alarm will trip if configured to do so.
Contact Delta F for assistance in interpreting the various codes if one should appear on the screen. Figure 42: System Error Code Screen 7.4.6.3 Pump Capacity Test Log Figure 43: Pump Capacity Test Log Menu The pump capacity test is used to determine the condition of the aspirator or vacuum pump which in turn will have a direct impact the flow of gas through the analyzer. A reduction in pump capacity can result in a reduction in gas flow and as a result on the stability of the analyzer reading.
Figure 44: Pump Capacity Test Log 7.4.7 Analyzer Setup The analyzer setup menu allows the user access to the Gas Scale Factor settings, Alarm Setups, Analog Output setup and Graph setup. Use the arrow keys ( and return to the main display. to scroll up and down through the list. Pressing ESC will 7.4.7.1 Sample GSF Figure 45: Sample GSF Menu The GSF setup (Gas Scale Factor) is critical for obtaining quantitatively correct results.
Use the Next key to move from between fields and use the arrow keys ( and to change the highlighted selections and to enter numerical values. When done, use the Next key to move to the Accept button and hit the Enter key to return to the main display. Using the ESC at anytime will exit the screen making no changes and return to the main display. After the percentages of all background gas are entered, the Accept button is hit and the system confirms that the total is 100%.
In addition, if hydrogen is entered as a gas in the GSF Setup, and the system detects a failure in the exhaust fan circuitry the entire analyzer will automatically isolate. A message of “Fan Failure” as shown in Figure 48 will flash over the moisture reading on the main display and the user will be unable to restore any flow until the fan problem has been fixed. 7.4.7.3 Alarm Setup Figure 49: Alarm Setup Menu The moisture analyzer includes a total of seven alarms.
An alarm warning will overwrite the moisture level readout if an alarm condition exists. To acknowledge the alarm simply hit the Enter button and its number or letter will appear in the Alarm Status line above the display. See Figure 18. This action will not clear the alarm. Only restoration of the condition that existed prior to the alarm will clear the alarm.
7.4.7.5 Temperature Range Alarm Setup Figure 51: Temperature Alarm Setup The system is constantly monitoring the ambient temperature in the analyzer cabinet. If enabled on the Temperature Alarm Setup screen, an alarm can be assigned to trip if the ambient temperature exceeds preset limits. The user may assign the temperature alarm to one of four relays. Use the Next key to move from between fields and use the arrow keys ( and to change the highlighted selections and to enter numerical values.
to trip if the pressure exceeds preset limits. The user may assign the pressure alarm to one of four relays. The limits are not user adjustable but are set automatically on the basis of the background gases entered in the GSF screen. See page 49 for additional information on setting the background gases. Use the Next key to move from between fields and use the arrow keys ( and to change the highlighted selections and to enter numerical values.
7.4.8 Analog Output Setup Figure 54: Analog Output Setup Menu The Zero Point corresponds to the lowest voltage or current output (0 VDC, 4 mA) that is sent to a recorder, while the Full Scale corresponds to the maximum voltage or current output (1/5/10 VDC or 20mA) that is sent. The Full Scale set point (FS) is set from 0.002 ppm to 20.00 ppm. Three ranges can be entered in this screen.
The In Calibration Relay can be enabled to signal that a zero calibration is in process. In addition, the user has the option to freeze the analog output or enable the analog output to update as the calibration progresses. 7.4.9 Graph Setup Figure 56: Graph Setup Menu The graph setup is used to adjust the time scale on the main data display of the analyzer. A specific time interval in minutes can be chosen for the X-axis on that display. The minimum acceptable time is 3 minutes.
7.4.10.1 Active Zero On/Off Figure 58: Active Zero On/Off Menu The Active Zero Offset feature is designed to automatically compensate for the analyzer’s gradual zero baseline cleanup. This gradual cleanup is natural and occurs after a fresh startup or after a prolonged or abnormally high moisture exposure. This feature ensures that accurate low ppb H2O readings can be made as soon as possible after initial startup, or after a high H2O upset event.
If the Active Zero Offset feature is turned off, the User Zero Offset value will appear in its’ place in the Check/Adjust Zero menu. The previous user Zero Offset value (if any) will reappear and immediately be applied to the live display readings. Likewise, if the Active Zero Offset feature is on, then its’ value (if any) will appear and immediately be applied to the live readings. 7.4.10.
7.4.10.3 Test Analog Voltage Output Figure 61: Test Analog Outputs Menu The Test Output screen, as shown in Figure 62, is used to calibrate the analog recorder output. When the Test Output screen is selected, the NEXT key is used to move to the percentage field where the arrow keys ( and ) are used to choose the appropriate setting. The NEXT key is then used to move to the Apply field where the Enter key is hit to set the analog output to the selected value.
7.4.10.4 Signal Monitor Figure 63: Signal Monitor Menu The Signal Monitor depicts 18 system parameters in numerical order. Each parameter is unique for each system. In the event of a system error, these parameters can be used as a diagnostic tool. See page 47 for additional information on system errors. Figure 64: Signal Monitor Screen 7.4.10.
Figure 65: Pump Capacity Test Menu After the pump test is complete, an entry is automatically put in the pump capacity test log as shown in Figure 68. See page 48 for additional information on the pump test log.
Figure 68: Pump Capacity Test Log 7.4.11 Adjust Contrast Figure 69: Adjust Contrast Menu Figure 70: Adjust Display Contrast Screen This screen allows the user to modify the contrast of the front display screen. From the System menu, select Adjust Contrast. Use the up and down arrows ( and ) as indicated to make adjustments. Hit ESC on the key pad when done.
7.4.12 Power Up Default – Optional Figure 71: Power Up Default Menu This menu item is only available on analyzers equipped with the isolation valve option. The Power Up Default SubRoutine allows the user to determine the various default states during analyzer power up. The power up states are useful because they determine whether, for instance, the sensor is protected from ambient air contamination or whether it is configured the best way for rapid station to station transfer and measurement.
7.4.13 Date/Time Figure 73: Date/Time Menu The Date/Time Screen is used to set various calendar and clock related parameters. The Next key is used to moved from field to field, and the arrow keys ( used to change the numerical digits and units. and ) are When in the Time Zone field the left and right arrow keys toggle through the various options. When done the Next key is used to move to the Accept field and the Enter key is hit.
7.4.14 Communications The Communications screen is used to set parameters related to serial PC communications. Accessed from the System menu, the Next key is used to moved from field to field, and the arrow keys ( and ) are used to change the numerical digits as well as to select the baud rate. When done the Next key is used to move to the Accept field and the Enter key is hit. See page 31 for additional information. Figure 75: Communications Menu Figure 76: Communications Setup Screen 7.4.
Hit Enter and the download process will begin and a time bar will appear as in Figure 80. The process should only take a minute or two and when complete control will be returned to the user. Figure 77: Download System Data Menu Figure 78: Insert Media Figure 79: Media Warning If there is insufficient space available on the media a warning will appear as in Figure 79.
Figure 80: Download Time Line The file name is automatically created and includes the date and time that the data was recorded as well as the serial number of the analyzer. All files are then automatically compressed and loaded as one file on the memory stick, which then can be used to forward the information to Delta F for evaluation. 7.4.
Figure 82: System Info Screen 7.4.16.1 Firmware Upgrade While the Firmware Upgrade box is highlighted, hitting the Next key will bring up the Firmware Upgrade dialog box as in Figure 83 below. Figure 83: Software Upgrade Screen Place the USB memory stick in the external USB socket located behind the front door, When ready hit the Yes, Proceed key and follow the instructions. At the conclusion of the upgrade the analyzer will automatically reboot.
8 Sample Gas Preparation and Delivery 8.1 Introduction It is important to note key differences in each parameter to ensure a properly functioning system. Parameters such as flow, pressure, and background gas will have major effects on total system performance. 8.2 Sample Flow Rate and Pressure Proper moisture analyzer operation is dependant upon the pressure of the sample gas. For each sample gas, there is a unique pressure range that the analyzer must operate under. See Table 7 for the proper settings.
such as Helium and Hydrogen whose flow rates should be set to approximately one-third that of Nitrogen. 8.5 Flammable Sample Gas There is nothing within the analyzer sample system that can ignite a flammable sample gas. However, it is critical to ensure that the sample gas does not escape from the sample system into the analyzer enclosure, or the room, where ignition is possible.
9 Service 9.1 Return Material Authorization number If an analyzer has to be returned to the factory, the shipper will have to obtain a Return Material Authorization number from Delta F by calling the Service Line at (781) 935-5808 or sending a written request via their Service Fax Line at (781) 932-0053. See the Shipping section for more details. 9.2 Maintenance 9.2.
6. Install valve plate, head gasket and head 7. Install head bolts and torque to 80 in-lbs.
9.3 Replaceable Parts List When ordering parts, please be certain to supply the model number and serial number of your analyzer. PART NO.
9.4 Troubleshooting the DF–745 NanoTrace Analyzer The DF-700 series moisture analyzer constantly performs internal monitoring of the analyzer operation. In the event of a failure a system alarm will be displayed on the front panel. In addition the failure will be logged in the System Error Log (see page 47). In the event of a system alarm contact Delta F with information as displayed in the log as well as on the Signal Monitor screen as shown on page 60.
10 Theory of Operation 10.1The Moisture Measurement 10.1.1 Moisture and the IR Spectrum Figure 84: Schematic of Moisture Cell The Nanotrace Moisture analyzer uses infrared (IR) absorption as its detection method. IR absorption is but a subset of the overall field of “spectroscopy,” which measures the interaction of light and matter. The basis of absorption spectroscopy is when an electromagnetic wave (i.e.
10.1.2 Absorption Spectroscopy The relationship that defines absorption spectroscopy is known as Beer’s Law. Beer’s Law equates, in rigorous terms, the concentration of any absorbing molecule based on absorbed light intensity at a particular wavelength, given knowledge of the molecule’s absorption strength and the “path length” of the sample medium. Many are familiar with Beer’s Law as it is conventionally used in analytical laboratories: A log(1 / T ) log( I 0 / I ) 2.
11 Safety 11.1General Warnings DANGER Potentially hazardous AC voltages are present within this instrument. Leave all servicing to qualified personnel. Disconnect the AC power source when installing or removing: external connections, the sensor, the electronics, or when charging or draining electrolyte. CAUTION Do not setup or operate the Analyzer without a complete understanding of the instructions in this manual.
12 Warranty Delta F Corporation warrants each instrument manufactured by them to be free from defects in material and workmanship at the F.O.B. point specified in the order, its liability under this warranty being limited to repairing or replacing, at the Seller's option, items which are returned to it prepaid within one year from delivery to the carrier and found, to the Seller's satisfaction, to have been so defective. In no event shall the Seller be liable for consequential damages.
13 Index Analog Signal Outputs, 32 Relay Ports, 33 Serial Communications, 31 External Devices,Connecting to, 31 4 4-20mA Outputs, 32 A F Active Zero On/Off, 57 Add Location, 45 Adjust Contrast, 62 Alarm Setup, 51 Alarm Setup, Moisture, 52 Analog Output Setup, 55 Analog Signal Outputs, 32 Analog Voltage Output, 25 Analog Voltage Output Test, 59 Analyzer Specifications General, 9 Moisture, 9 Warranty, 81 Analyzer Setup, 49 Analyzer Shut Down, 21 Analyzer Start Up, 19 Fan Failure, 50 Fan Failure Alarm, 51
O Operating Voltage, 25 Options, 25 P Power Up Default, 63, 64 Pressure Alarm Setup, 53 Pump Capacity Test, 60 Pump Capacity Test Log, 48 Pump case purge, 89 R Relay Ports, 33 Relays, Test, 58 Restore Sample Gas Flow, 38 S Safety, 79 Symbols and Explanations, 79 Sample Gas Flammability, 70 Sample Gas Preparation and Delivery, 69 Background Gas Effects, 69 Flow Rate Effects Sensor Performance, 69 Sample Gas Flammability, 70 Sample GSF, 69 Sample Gas Scale Factor, 49 Sample GSF, 49, 69 Serial Communication
14 Appendix A – User Menu Screens Page 37 Page 38 Page 42 Page 44 Page 39 Page 46 Page 47 Appendix A – User Menu Screens Page 48 DF-745 85
Page 49 86 Page 51 Page 55 Page 56 Page 57 Page 58 Page 59 Page 60 Appendix A – User Menu Screens
Page 60 Page 62 Page 63 Page 64 Page 66 Page 67 Appendix A – User Menu Screens DF-745 Page 65 87
88 Appendix A – User Menu Screens
15 Appendix B – Hydrogen Service Safety System The Hydrogen Service Safety System is designed to safeguard the DF-745 from explosion hazards when operating on hydrogen sample gas under normal pressure and flow conditions as described in this manual. The instrument chassis and the remote pump, if equipped, are both protected by maintaining a safe condition within their respective enclosures.
The pump enclosure must be mounted to a nearby wall or inside the rack shared by the analyzer. See Figure 86 on page 94. The sample gas inlet connection is made to an interlock valve mounted at the sample gas inlet on the rear of the analyzer. NOTE: The installation of this option changes the sample inlet connection to female VCR, from male.
adequate pump cooling. The purge flow rate is set to 30 scfh as indicated on a rotometer mounted on the side of the pump enclosure. An in-line flow switch will trip at a flow rate of less than 26 scfh assuring adequate flow. Loss of purge flow breaks the contacts in the flow switch, which in turn trips a mercury relay that removes power to the pump. To disable the Hydrogen Safety Service System, use the GSF screen to indicate that hydrogen is not included in the process gas by entering 0%.
CAUTION The operator is obligated to assure proper operation of the analyzer air flow system as designed. Do not impede air flow at the inlet in the front door or at the exhaust fan outlets on either side of the cabinet in the rear. NOTES 1 For hydrogen, which has a lower explosive limit (LEL) of 4%, the maximum allowable influx in event of an internal leak would be 120 scfh, whereas the normal flow as defined in the Operating Instruction Manual is about 1/10th that at approximately 14 scfh.
Figure 85: Hydrogen Service Safety System Appendix B – Hydrogen Service Safety System DF-745 93 1.18 [29.85] ~ ~ ~ ~ ~ 3.07 [77.85] ~ 3.07 [77.98] 5.44 [138.24] .54 [13.70] SAMPLE DELIVERY INTERLOCK VALVE WITH 1/4" FEMALE VCR FITTING CASE PURGE VALVE WITH 1/4" COMPRESSION FITTING 3.27 [82.
Figure 86: Pump Purge Option 94 Appendix B – Hydrogen Service Safety System PUMP INLET & OUTLET 1/4" COMPRESSION 13.25 [336.42] 14.50 [368.30] Ø.44[Ø11.18] 4 PL .63 [15.88] 1.00 [25.40] 7.55 [191.77] 1.25 [31.75] 2 PL 7.00 [177.80] (2.68 [68.12]) PURGE VENT 1/4" COMPRESSION 16.68 [423.72] ENCLOSURE SHALL NOT BE OPENED UNLESS THE AREA IS KNOWN TO BE NON-HAZARDOUS OR UNLESS ALL DEVICES WITHIN HAVE BEEN DEENERGIZED.
