Hart Scientific Model 9103 Dry-Well User’s Guide Rev.
Fluke Corporation, Hart Scientific Division 799 E. Utah Valley Drive • American Fork, UT 84003-9775 • USA Phone: +1.801.763.1600 • Telefax: +1.801.763.1010 E-mail: support@hartscientific.com www.hartscientific.com Subject to change without notice. • Copyright © 2005 • Printed in USA Rev.
Table of Contents 1 Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1 1.2 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1.2.1 1.2.2 1.3 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Authorized Service Centers. . . . . . . . . . . . . . . . . . . . . .
7.3 Scan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 7.3.1 7.3.2 7.4 Scan Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Scan Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Temperature Display Hold . . . . . . . . . . . . . . . . . . . . . 22 7.4.1 7.4.2 7.4.3 7.4.4 Enabling the Hold Temperature Display Mode Setting . . . . . . . . . . . . . . Switch Wiring . . . . . . . . . . . . . . Switch Test Example . . . . .
10.2.1 10.2.2 10.2.3 10.2.4 Compute DELTA . . . . . . Compute R0 and ALPHA. . Compute BETA . . . . . . . Accuracy and Repeatability. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 40 41 41 11 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 12 Trouble Shooting . . . . . . . . . . . . . . . . . . .
Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 iv 9103 Back Panel . . . . . . . . . . . . . . . . 9103 Front Panel . . . . . . . . . . . . . . . . Inserts Available for the 9103 Block Assembly Controller Operation Flowchart . . . . . . . . Serial Cable Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables Table 1 Table 2 Table 2 International Electrical Symbols . . . . . . . . . . . . . . . . . . . . . 1 9103 Controller Communications Commands . . . . . . . . . . . . . . 34 Table 2 9103 Controller Communications Commands continued . . . .
1 Before You Start Symbols Used 1 1.1 Before You Start Symbols Used Table 1 lists the International Electrical Symbols. Some or all of these symbols may be used on the instrument or in this manual.
103 Dry-Well User’s Guide Symbol Description Canadian Standards Association OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per IEC1010-1 refers to the level of Impulse Withstand Voltage protection provided. Equipment of OVERVOLTAGE CATEGORY II is energy-consuming equipment to be supplied from the fixed installation. Examples include household, office, and laboratory appliances.
1 Before You Start Authorized Service Centers DO NOT use this unit for any application other than calibration work. DO NOT use this unit in environments other than those listed in the user’s guide. DO NOT turn the unit upside down with the inserts in place; the inserts will fall out of the unit. DO NOT operate near flammable materials. Use of this instrument at HIGH TEMPERATURES for extended periods of time requires caution.
9103 Dry-Well User’s Guide American Fork, UT 84003-9775 USA Phone: +1.801.763.1600 Telefax: +1.801.763.1010 E-mail: support@hartscientific.com Fluke Nederland B.V. Customer Support Services Science Park Eindhoven 5108 5692 EC Son NETHERLANDS Phone: +31-402-675300 Telefax: +31-402-675321 E-mail: ServiceDesk@fluke.
1 Before You Start Authorized Service Centers Telefax: +65 6799-5588 E-mail: antng@singa.fluke.
2 Introduction 2 Introduction The Hart Scientific 9103 Dry-well may be used as a portable instrument or bench top temperature calibrator for calibration thermocouples and RTD temperature probes. The 9103 is small enough to use in the field and accurate enough to use in the lab. With an ambient temperature of 23°C (74°F), calibrations may be done over a range of –25°C to 140°C (–13°F to 284°F). The resolution of the 9103 temperature display is 0.1 degrees.
3 Specifications and Environmental Conditions Specifications 3 3.1 3.2 Specifications and Environmental Conditions Specifications Operating Range –25°C to 140°C (–13°F to 284°F), at 23°C ambient Accuracy ±0.25°C (±1.0°C in holes > ¼” [6.4 mm]) Stability ±0.02°C at –25°C ±0.04°C at 140°C Well-to-Well Uniformity ±0.1 with similar probes Resolution 0.
9103 Dry-Well User’s Guide 3.3 Warranty Fluke Corporation, Hart Scientific Division (Hart) warrants this product to be free from defects in material and workmanship under normal use and service for a period as stated in our current product catalog from the date of shipment. This warranty extends only to the original purchaser and shall not apply to any product which, in Hart’s sole opinion, has been subject to misuse, alteration, abuse or abnormal conditions of operation or handling.
4 Quick Start Unpacking 4 4.1 Quick Start Unpacking Unpack the instrument carefully and inspect it for any damage that may have occurred during shipment. If there is shipping damage, notify the carrier immediately. Verify that the following components are present: • 9103 Dry-well • Insert for configuration ordered • Power Cord • Insert Removal Tongs • 9930 Software • Serial Cable • Manual 4.2 Setup Place the calibrator on a flat surface with at least 6 inches of free space around the instrument.
9103 Dry-Well User’s Guide 4.4 Setting the Temperature Section 7.2 explains in detail how to set the temperature set-point on the calibrator using the front panel keys. The procedure is summarized here. (1) Press “SET” twice to access the set-point value. (2) Press “UP” or “DOWN” to change the set-point value. (3) Press “SET” to program in the new set-point. (4) Press “EXIT” to return to the temperature display.
5 Parts and Controls Back Panel 5 Parts and Controls The user should become familiar with the instrument and its parts as described below. 5.1 Back Panel The back panel is shown in Figure 1 on page 14. Power Cord – At the rear of the calibrator is the removable power cord inlet that plugs into an IEC grounded socket. Power Switch - The power switch is located on the power entry module (PEM). The PEM also houses the voltage selector.
9103 Dry-Well User’s Guide RS-232 FLUKE CORPORATION HART SCIENTIFIC DIVISION www.hartscientific.
5 Parts and Controls Constant Temperature Block Assembly 9103 DRY-WELL CALIBRATOR –25°C to 140°C 104.6 C Smoked Display Window SWITCH HOLD SET DOWN UP EXIT Figure 2 9103 Front Panel EXIT – Used to exit a function and to skip to the next function. Any changes made to the displayed value are ignored. Holding “EXIT” for about ½ a second returns control to the main display. Switch Hold – These terminals are for connecting and testing external thermal switches and cutouts. 5.
9103 Dry-Well User’s Guide • Insert A (variety block): 1/2”, 3/8”, 1/4”, 3/16”, 1/8”, and 1/16” holes • Insert B (comparison block): 2 each 3/8”, 2 each 1/4”, and 2 each 3/16” holes • Insert C (1/4” comparison block): 6 each 1/4” holes or • Insert D: 2 each 3 mm, 2 each 4 mm, and 2 each 6 mm holes Interchangeable Insert Options 1/16" 1/2" Insert “A” Insert “B” 1/4" 3/16" 3/8" 1/4" 1/4" 3/8" 3/8" Insert “C” 3 mm Insert “D” 4 mm 6 mm 6 mm 1/8" 3/16" 1/4" 3/16" Figure 3 Inserts Available for
6 General Changing Display Units 6 6.1 General Changing Display Units The instrument can display temperature in Celsius or Fahrenheit. The instruments are shipped from the factory set to Celsius. To change to Fahrenheit or back to Celsius there are two ways: 1. Press “SET” and “UP” simultaneously. This will change the display units. or 1. Press the “SET” key three times from the temperature display to show Un = C 6.2 2. Press the “UP” or “DOWN” key to change units. 3.
7 Controller Operation Well Temperature 7 Controller Operation This section discusses in detail how to operate the calibrator temperature controller using the front control panel. By using the front panel key-switches and LED display, the user may monitor the well temperature, adjust the set-point temperature in degrees C or F, monitor the heater output power, adjust the controller proportional band, operating parameters, serial interface configuration, and controller calibration parameters.
9103 Dry-Well User’s Guide UP Display Temperature Hold Temperature Display DOWN SET + DOWN SET Select Setpoint Displays Set-Point Resistance Adjust Setpoint + SET UP Toggles °C / °F EXIT EXIT Units °C/°F Secondary Functions SET Scan On/Off + EXIT Cal Menu EXIT SET X5 R0 Set Proportional Band SET EXIT Operating Parameters Menu EXIT UP DOWN Serial Interface Menu SET SET HL BAUD Rate Adj.
7 Controller Operation Temperature Set-point 100.0 C S Well temperature in degrees Celsius Access set-point memory 1. 25 Set-point memory 1, 25.0°C currently used To change the set-point memory press “UP” or “DOWN”. 4. 120 New set-point memory 4, 120.0°C Press “SET” to accept the new selection and access the set-point value. S 7.2.2 Accept selected set-point memory Set-point Value The set-point value may be adjusted after selecting the set-point memory and pressing “SET”.
9103 Dry-Well User’s Guide 7.3 Scan The scan rate can be set and enabled so that when the set-point is changed the calibrator heats or cools at a specified rate (degrees per minute) until it reaches the new set-point. With the scan disabled the calibrator heats or cools at the maximum possible rate. 7.3.1 Scan Control The scan is controlled with the scan on/off function that appears in the main menu after the set-point function.
7 Controller Operation Temperature Display Hold tion explains the functions available for operating the temperature hold feature. An example follows showing how to set up and use the hold feature to test a switch. 7.4.1 Enabling the Hold Temperature Display Pressing the “UP” button when the temperature is displayed enables the Hold Temperature Display feature. The Hold Temperature Display shows the hold temperature on the right and the switch status on the left.
9103 Dry-Well User’s Guide 7.4.4 Switch Test Example This section describes a possible application for the switch hold temperature display feature and how the instrument is set up and operated. Suppose you have a thermal switch which is supposed to open at about 75°C and close at about 50°C and you want to test the switch to see how accurate and repeatable it is. You can use the temperature hold feature and the scan function to test the switch.
7 Controller Operation Thermal Electric Devices (TED) 7.8 Thermal Electric Devices (TED) The temperature controller controls the temperature of the well by pulsing the TED on and off. The total power being applied to the TED is determined by the duty cycle or the ratio of TED on time to the pulse cycle time. By knowing the amount of heating the user can tell if the calibrator is heating up to the set-point, cooling down, or controlling at a constant temperature.
9103 Dry-Well User’s Guide The proportional band width is set at the factory to about 15.0°C. The proportional band width may be altered by the user if he desires to optimize the control characteristics for a particular application. The proportional band width is easily adjusted from the front panel. The width may be set to discrete values in degrees C or F depending on the selected units. The proportional band adjustment can be accessed within the secondary menu.
7 Controller Operation Serial Interface Parameters The operating parameters menu contains the High Limit parameter. The High Limit parameter adjusts the upper set-point temperature. The factory default and maximum are set to 126 °C. For safety, a user can adjust the High Limit parameter down so the maximum temperature set-point is restricted. Press “SET” to enable adjustment of the High Limit parameter.
9103 Dry-Well User’s Guide Press “SET” to set the BAUD rate to the new value or “EXIT” to abort the operation and skip to the next parameter in the menu. 7.12.2 Sample Period The sample period is the next parameter in the serial interface parameter menu. The sample period is the time period in seconds between temperature measurements transmitted from the serial interface.
7 Controller Operation Calibration Parameters LF=On Current linefeed setting The mode may be changed using “UP” or “DOWN” and pressing “SET”. LF=OFF 7.13 New linefeed setting Calibration Parameters The operator of the calibrator controller has access to a number of the calibration constants namely R0 , ALPHA, DELTA, and BETA. These values are set at the factory and must not be altered. The correct values are important to the accuracy and proper and safe operation of the calibrator.
9103 Dry-Well User’s Guide 7.13.3 DELTA This probe parameter characterizes the curvature of the resistance-temperature relationship of the sensor. The value of this parameter is set at the factory for best instrument accuracy. 7.13.4 BETA This probe parameter characterizes the low temperatures. The value of this parameter is set at the factory for best instrument accuracy.
8 Digital Communication Interface Serial Communications 8 Digital Communication Interface The calibrator is capable of communicating with and being controlled by other equipment through the digital serial interface. With a digital interface the instrument may be connected to a computer or other equipment. This allows the user to set the set-point temperature, monitor the temperature, and access any of the other controller functions, all using remote communications equipment.
9103 Dry-Well User’s Guide interface menu. The serial interface parameters menu is outlined in Figure 4 on page 20. To enter the serial parameter programming mode first press “EXIT” while pressing “SET” and release to enter the secondary menu. Press “SET” repeatedly until the display reads “PAr”. Press “UP” until the serial interface menu is indicated with “SErIAL”. Finally press “SET” to enter the serial parameter menu.
8 Digital Communication Interface Interface Commands 8.1.3 Serial Operation Once the cable has been attached and the interface set up properly the controller immediately begins transmitting temperature readings at the programmed rate. The serial communications uses 8 data bits, one stop bit, and no parity. The set-point and other commands may be sent via the serial interface to set the temperature set-point and view or program the various parameters. The interface commands are discussed in Section 8.2 .
9103 Dry-Well User’s Guide Table 2 9103 Controller Communications Commands Command Format Command Example Returned Returned Example Read current set-point s[etpoint] s set: 999.9 {C or F} set: 100.00 C Set current set-point to n s[etpoint]=n s=200.0 Command Description Acceptable Values Display Temperature Instrument Range Read temperature t[emperature] t t: 999.9 {C or F} t: 55.
8 Digital Communication Interface Interface Commands Table 2 9103 Controller Communications Commands continued Command Description Command Format Command Example Returned Returned Example Read R0 calibration parameter r[0] r r0: 999.999 r0: 100.578 Set R0 calibration parameter to n r[0]=n r=100.324 Read ALPHA calibration parameter al al[pha] Set ALPHA calibration parameter al[pha]=n to n al=0.
9 Test Probe Calibration Calibrating a Single Probe 9 Test Probe Calibration For optimum accuracy and stability, allow the calibrator to warm up for 25 minutes after power-up and then allow adequate stabilization time after reaching the set-point temperature. After completing operation of the calibrator, allow the well to cool by setting the temperature to 25°C for one-half hour before switching the power off. 9.
10 Calibration Procedure Calibration Points 10 Calibration Procedure Sometimes the user may want to calibrate the instrument to improve the temperature set-point accuracy. Calibration is done by adjusting the controller probe calibration constants R0, ALPHA, DELTA, and BETA so that the temperature of the calibrator as measured with a standard thermometer agrees more closely with the set-point.
9103 Dry-Well User’s Guide B = T3 − T2 T ⎤ ⎡ T ⎤⎡ T ⎤ ⎡ T ⎤⎡ C = ⎢ 4 ⎥⎢1 − 4 ⎥ − ⎢ 3 ⎥⎢1 − 3 ⎥ ⎣100 ⎦⎣ 100 ⎦ ⎣100 ⎦⎣ 100 ⎦ T ⎤ ⎡ T ⎤⎡ T ⎤ ⎡ T ⎤⎡ D = ⎢ 3 ⎥⎢1 − 3 ⎥ − ⎢ 2 ⎥⎢1 − 2 ⎥ ⎣100 ⎦⎣ 100 ⎦ ⎣100 ⎦⎣ 100 ⎦ E = R4 − R3 F = R3 − R2 delta = AF − BE DE − CF T1-4 - Measured temperature using thermometer. R1-4 - Value of R from display of 9103 (Press SET and DOWN at the same time.
10 Calibration Procedure Calibration Procedure 10.2.3 Compute BETA ⎡T ⎤ x = ⎢ 1 ⎥ −1 ⎣100 ⎦ ⎡T ⎤ y=⎢ 1 ⎥ ⎣100 ⎦ R1 T1 delta rzero beta = + − − (alpha)(x )( y 3 ) (x )( y 3 ) y 2 (alpha)(x )( y 3 ) 1 Where T1 and R1 are the measured temperature and resistance at –25.00°C and alpha, rzero, and delta are the new values of ALPHA, R0, and DELTA calculated above. Program the new values for DELTA (delta), R0 (rzero), ALPHA (alpha), BETA (beta) into the instrument with the following steps. 10.2.4 1.
11 Maintenance 11 Maintenance • The instrument has been designed with the utmost care. Ease of operation and simplicity of maintenance have been a central theme in the product development. Therefore, with proper care the instrument should require very little maintenance. Avoid operating the instrument in an oily, wet, dirty, or dusty environment. • Ice will build up over a period of time if the unit is operated at sub-zero temperatures, allowing water to pool in the well at temperatures above 0.0°C.
12 Trouble Shooting Troubleshooting 12 Trouble Shooting If problems arise while operating the instrument, this section provides some suggestions that may help you solve the problem. A wiring diagram is also included. 12.1 Troubleshooting In the event that the instrument appears to function abnormally, this section may help to find and solve the problem. Several possible problem conditions are described along with likely causes and solutions.
9103 Dry-Well User’s Guide Problem Possible Causes and Solutions The display shows err 6 and flashes SenSor Defective control sensor. The control sensor may be shorted, open or otherwise damaged. Perform the Factory Reset Sequence described above. If this does not fix the problem, contact a Hart Scientific Authorized Service Center. The display shows err 7 Heater control error. Initialize the unit by performing the Factory Reset Sequence as described above.
