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9105 / 9107 Dr y-well Calibrator User’ s Guide Rev. 2A2801.
Rev.2A2801 © Copyright,1991–2002 Hart Scientific, Inc. 799 E. Utah Valley Drive American Fork, Utah 84003-9775 Telephone: (801) 763-1600 • Fax: (801) 763-1010 Internet: http://www.
T able of Contents 1 Before Y ou Start ............................1 1.1 Symbols Used ....................................... 1 1.2 Safety Information ..................................... 2 1.2.1 Warnings .............................................
8 Controller Operation ..........................2 3 8.1 Well T emperature ..................................... 2 3 8.2 Reset Cut-out ....................................... 2 3 8.3 T emperature Set-point .................................. 2 5 8.3.1 Programmable Set-points .
8.11.5.3 SCO ................................................ 4 2 9 Digital Communication Interface ....................4 3 9.1 Serial Communications .................................. 4 3 9.1.1 Wiring .................................................
iv Figures Figure 1 T op View ............................................ 3 Figure 2 Rear Panel .......................................... 1 5 Figure 3 Front Panel .......................................... 1 6 Figure 4 Well and Insert ..............
v T ables T able 1 International Electrical Symbols ................................ 1 T able 2 Communications Commands ................................. 4 7 T able 2 Communications Commands Continued ............................ 4 8 T able 2 Communications Commands Continued .
1 Before Y ou Start 1.1 Symbols Used T able 1 lists t he symbols used on the inst rument or in this manual a nd the meaning of each symbol. Symbol Description AC (Alternating Current) AC-DC Battery Co.
Symbol Description Canadian Standards Association OVERVOL T AGE (Installation) CA TEGORY II, Pollution Degree 2 per IEC1010-1 refers to the level of Impulse Withstand Voltage protection provided. Equipment of OVER VOL T AGE CATE - GORY II is energy-consuming equipment to be supplied from the fixed installation.
9105/9107 3 1 Before You Start Set Down Up Exit 9105 1 2 3 W ARNING: THIS AREA IS HOT Figure 1 Top View.
• DO NO T REMO VE INSER TS A T HIGH TEMPERA TURES. Inserts will be the same temperature as the display temperature. Use extreme care when removing hot inserts. • DO NO T operate this unit without a properly grounded, properly polar - ized power cord.
• Components and heater lifetime can be shortened by continuous high temperature operation. • Most probes have handle temperature limits. Be sure that the probe handle temperature limit is not exceeded in the air abov e the unit. • (9107 only) Always use the well insulator , see Section 5.
T elefax: +31-402-675321 E-mail: ServiceDesk@fluke.nl Fluke Int'l Corporation Service Center - Instrimpex Room 2301 Sciteck T ower 22 Jianguomenwai Dajie Chao Y ang District Beijing 100004, PRC CHIN A Phone: +86-10-6-512-3436 T elefax: +86-10-6-512-3437 E-mail: xingye.
2 Introduction The Hart Scientif ic Model 9105/9107 dry-well calibrator may be used as a por - table instrument for cal ibration of tem perature probes. The 9105 operates o ver the range of –25°C and 140°C. The 9107 operates o ver the range of –45°C to 140°C.
3 Specifications and Environmental Conditions 3.1 Specifications The following table lists the specifications for this instru ment. Accuracy speci - fications are applicable for a one-year calibration interval.
• temperature range 5 - 50°C (41 - 122°F) • ambient relati ve humidity 15 - 50% • pressure - 75kPa - 106kPa • mains voltage within ± 10% of nominal • vibrations in the calibration en vironment should be minimized • altitude less than 2,000 meters 3.
4 Safety Guidelines • Operate the instrument in room temperatures between 5–50°C (41–122°F). Allow suff icient air circulation by leaving at least 6 inches of space between the instrument and nearby objects. DO NO T place under a cabinet or other structure.
the instrument. W ait until the power has stabilized before re-energizing the instrument. 12 Hart Scientific 4 Safety Guidelines.
5 Quick Start 5.1 Unpacking Unpack the dry-well carefully and inspect it for a ny damage that may ha ve oc - curred during shipment. If there i s shipping damage, notify t he carrier immediately .
“PO WER” switch . The dry-well will turn on and begin to heat to the pre vio usly programmed temperature set-point. The front panel LED display will indicat e the actual dry-well temperature. The 9107 is f ield switchable between 115 V and 230 V .
6 Parts and Controls The user should become familiar with the d ry-well calibrator and its parts. 6.1 Rear Panel S e eF i g u r e2 . Pow er Co rd - At the rear of the calibrator is the remov able power cord that plugs into a st andard 115 V A C grounded socket .
Po wer Entry Module (9107) - The power switch is located on the po w er entry module (PEM). The PEM also houses the fuses.The supply v oltage for the unit is indicated on the PEM. Serial Port - This D-9 connector is for interf acing the calibrator to a computer or terminal with serial RS-232 communications.
U P–U s e dt oi n c r e m e n tt h ed i s p l a y e dv a l u e . EXIT – Used to e xit from a menu. When EXIT is pressed an y changes made to the displayed v alue will be ignored. Control Indicator - The Control Indicator is a two color light emitting diod e.
Standard Insert Sizes Model Number Size 2168 Blank insert 2169 1 16 ¢¢ insert 2170 1 8 ¢¢ insert 2171 5 32 ¢¢ insert 2172 3 16 ¢¢ insert 2173 1 4 ¢¢ insert 2174 5 16 ¢¢ insert 2175 3 8 ¢¢ insert 2176 1 2 ¢¢ insert 2177 5 8 ¢¢ insert 2178 7 16 ¢¢ insert 2179 9 16 ¢¢ insert 6.
insulator flush with the top of the ca vity . The well insulator has a slot through which a probe can be inserted. 9105/9107 19 6 Parts and Controls Figure 5 Well Insulator T op View.
7 General Operation 7.1 Calibrator Set-Up Place the calibrator on a flat surface with at least 6 inches of free space around the instrument. Overhead clearance is required. DO NO T place under a cabinet or other structure.Plug the power cord into a grounded mains out let.
7.3 Setting the T emperature Section 8.3 expl ains in detail how t o set the temperature set -point on the cali - brator using the front panel ke ys. 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.
8 Controller Operation This chapter discusses in detail how to operate the dry-well temperature con - troller using the front control panel. Using the front panel k ey-swit ches and LED display the us.
24 Hart Scientific 8 Controller Operation Calibration Menu CTO Adjust CTO B0 Adjust B0 BG SCO Adjust BG Adjust SCO SET/EXIT IEEE-488 Interface Menu Device Address Adj.
When the cut-out is acti ve and the cut-out mode is set to manual (“reset”) then the display will flash “cut-out” until the user resets the cut-out. T o access the reset cut-out function press the “SET” butt on. S Access cut-out r eset function The display will indicat e the reset function.
T o change the set-point memory press “UP” or “DO WN”. 3. -10.0 New set-point memory 3, –10.0°C Press “SET” to accept the ne w selection and access the set-point value. S Accept selected set-point memory 8.3.2 Set-point Value The set-point value may be adjusted af ter selecting the set-point memory and pressing “SET”.
reaches the new set-point. W ith the scan di sabled the dry-well will heat or cool at the maximum possible rate. 8.4.1 Scan Control The scan is controlle d with the scan on/of f function that appears in the main menu after the set-point function. ScAn=OFF Scan function off Press “UP” or “DO WN” to toggle the scan on or off.
8.5.1 Hold T emperature Display When the hold feature is enabled you can easily switch the display between the normal temperature displa y and the hold temperature di splay by simply press - ing the “UP” or “DO WN” buttons. The hold temperature displ ay shows t he hold temperature on the right and the switch status o n the left.
HoLd=OFF Hold mode set to off T o change the mode press “UP” or “DO WN”. HoLd=Aut Automatic mode HoLd=n.c. Normally closed mode HoLd=n.o. Normally open mode Press “SET” to accept the displayed setting.
soak feature (described in detail i n the next section) to te st the switch. M easure - ments can be made by observing the di splay or , preferably , by collecting data using a printer or computer connect ed to the RS-232 port. T o set up the test do the following steps.
8.6 Ramp and Soak Program Menu The ramp and soak program feature allows t he user to program a number of set-points and ha ve the dry-well aut omatically c y cle between the temperat ures, holding at each for a determined length of time. The user can select one of four dif ferent cycle funct ions.
Use the “UP” or “DO WN” buttons to change the number from 2 to 8. Pn=3 New number of pr ogram set-points Press “SET” to continue. Pressing “EXIT” will cause an y changes made to the parameter to be ignored. S Save new setting 8.6.2 Set-points The next parameters are the program set-points.
Press “SET” to continue. S Save new setting 8.6.4 Program Function Mode The next parameter is the program functi on or cycle mode. There are four pos - sible modes which determine whether th e pro.
S Activate new command. 8.7 Secondary Menu Functions which are used less often are accessed within the secondary menu. The secondary menu is accessed by pr essing “SET” and “EXIT” simulta - neously and then r eleasing. The first function in the secondary menu is the heater power display .
band the cooling is 100%. Thus as the temperature ri ses the heater po wer is re - duced, which consequently tends t o lo wer the temperature back do wn. In this way the temperature i s maintained at a fairl y constant temperature. The temperature stability of the well and response time depend on the width of the proportional band.
Pb= 2.01C Pr oportional band setting T o change the proportional band press “UP” or “DO WN”. Pb=3.50C New pr oportional band setting T o accept the new setting and access the cut-out set-point press “SET”. Pr essing “EXIT” will exit the secondary menu ignoring any c hanges just made to the pr oportional band value.
CO= 80C Cut-out set-point T o change the cut-out set-point press “UP” or “DO WN”. CO= 70C New cut-out set-point T o accept the new cut-out set-point press “SET”. S Accept cut-out set-point The next functi on is the configurat ion menu. Press “EXIT” to resume display - ing the well temperatu re.
8.11.1.2 ALPHA This probe parameter refers to the a verage sensiti vity of the probe between 0 and 100°C. The value of this parameter is set at the f actory for best instrument accuracy . 8.11.1.3 DEL T A This parameter relates to th e second order nonlin earity of the sensor .
The parameter is indicated by , CtorSt Cut-out r eset mode parameter Press “SET” to access the parameter setting. Normally the cut-out is set for au - tomatic mode. Cto=Auto Cut-out set for automatic reset T o change to manual reset mode press “UP” a nd then “SET”.
Press “SET” to set the B A U D rate to the ne w value or “EXIT” to abort the op - eration and skip to the next parameter in the menu. 8.11.3.2 Sample Period The sample period is the ne xt parameter in the serial interf ace parameter menu.
LF Serial linefeed parameter Press “SET” to access the linefeed parameter . LF= On Curr ent linefeed setting The mode may be changed using “UP” or “DOWN” and pressing “SET”. LF= OFF New linefeed setting 8.11.4 IEEE-488 Parameters The calibrator may optionally be fitted with an IEEE-488 GPIB interf ace.
8.11.5 Calibration Parameters The user has access to a number of the instrument calibration constants namely CTO, B0, and BG. These v alues are set at the factory and must not be altered. The correct values are important to th e accurac y and p roper and safe operation of the calibrator .
9 Digital Communication Interface The dry-well calibrator is capable of communicating with and being controlled by other equipment through the digital interface. T wo types of digital interface are av ailable — the RS-232 serial interface and the IEEE-488 GPIB interface.
“EXIT” while pressing “SET” and release to enter the secondary menu. Press “SET” repeatedly until the display read s “ProbE”. This is the menu selection. Press “UP” repeatedly until the serial i nterface menu is indicated with “SE - rIAL”.
9.1.3 Serial Operation Once the cable has been attached and the interface set up properly the control - ler will immediately begin transmitting temperature readings at the pro - grammed rate. The serial communi cations uses 8 data bits, one stop bit, and no parity .
9.3 Interface Commands The various commands for accessing the ca librator functions via the digital in - terfaces are listed in this section (see T able 2 starting on page 47). These com - mands are used with both the RS-232 serial interf ace and the IEEE-488 GPIB interface.
9105/9107 47 9 Digital Communication Interface Command Description Command Format Command Example Returned Returned Example Acceptable Values Display Temperature Read current set-point s[etpoint] s set: 9999.
48 Hart Scientific 9 Digital Communication Interface Command Description Command Format Command Example Returned Returned Example Acceptable Values Set program function to n pf= n pf=2 1 to 4 Configuration Menu Probe Menu Read R0 calibration parameter r[0] r r0: 999.
9105/9107 49 9 Digital Communication Interface Command Description Command Format Command Example Returned Returned Example Acceptable Values These commands are on ly used for factory testing.
10 T est Probe Calibration For optimum accurac y and stability , allow the calibrator to w arm up f or 10 minutes after power -up and then allow adequate stabilization time after reach - ing the set-point t emperature. After complet ing calibration, all ow the block to cool before switching the po wer off.
type, length, diameter , and material. Probes should be inserted to the same depth in the well . The follo wing procedure can be used to calibrate a probe against a reference while eliminating error due to temperatu re gradients between wells. 1. Place the reference probe in one well.
10.2.1 V ertical Gradient There is a temperature gradient verti cally in the test well. The heater has been applied to the bl ock in such a way as t o compensate for nominal heat losses out of the top of the dry-well and minimize v ertical temperature gradients.
11 Calibration Procedure 11.1 Calibration Procedure Calibration of thi s instrument should be performed at re gularly scheduled inter - vals by qualif ied authorized personnel in accordance with your company’ s pol - icy . Follo wing is the recommended p rocedure for calibrating this instrument.
to 1. For example, if the block temperature is high by 0.1°C at 0°C then decrease R0 by 0.04. 3. Set the set-point to 100°C and allow adequate time for the block to reach this temperature and stabilize. Adjust the ALPHA calibration pa - rameter (see Section 8.
12 Maintenance • The calibration 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.
• The ov er-temperature cut-out should be checked ev ery 6 months to see that it is working properly . In order to check the user selected cut-out, fol - low the controller directions (Section 8.2) for setting the cut-out. Both the manual and the auto reset option of the cut-out should be check ed.
13 T roubleshooting 13.1 T roubleshooting In the e vent that the dr y-well appears t o function abnormally , this section ma y help to find and solv e the problem. Sev eral possible prob lem condi - tions are described along with likely causes and solutions.
Problem Causes and Solutions Temperature readout is not the actual temperature of the well With the unit stable, slowly rotate the unit. If no change occurs, the unit may need to be calibrated.
13.3 Wiring Diagrams 9105/9107 61 13 Troubleshooting CHASSIS EARTH WHT/ORG/BLK WHT/YEL/BLK WHT/ORG/BLK WHT/BLK/YEL GRN GRY/WHT BLK/YEL/WHT BLU/WHT BLK/GRY/WHT GRN BLU BRN FIL TER 2.
62 Hart Scientific 13 Troubleshooting 9107 WIRING FG L CN1 N 5 3 1 L CN1 CN3 N FG 5 3 1 BLK 28 AWG RED 28 AWG 26 PIN RIBBON BLK 28 AWG RED 28 AWG 3 2 1 - 2 1 1 - TC 5 4 3 2 1 2 1 3 2 - 2 1 2 1 + OUTPU.
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