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Via Acquanera, 29
22100 Como
tel. 031.526.566 (r.a.) fax 031.507.984
info@calpower.it
www.calpower.it
October 2013
© 2013 Fluke Corporation. All rights reserved. Specifications are subject to change without notice.
All product names are trademarks of their respective companies.
6054
Calibration Bath
User Manual
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Table of Contents
Summary of Contents for Fluke Calibration 6054
- Page 1 Via Acquanera, 29 22100 Como tel. 031.526.566 (r.a.) fax 031.507.984 info@calpower.it www.calpower.it 6054 Calibration Bath User Manual October 2013 © 2013 Fluke Corporation. All rights reserved. Specifications are subject to change without notice. All product names are trademarks of their respective companies.
- Page 3 WARNING To ensure the safety of operating personnel, and to avoid damage to this unit: DO NOT operate this unit without a properly grounded, properly polarized power cord. DO NOT connect this unit to a non-grounded, non-polarized outlet. DO use a ground fault interrupt device. WARNING HIGH TEMPERATURES PRESENT in this equipment.
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Page 5: Table Of Contents
TABLE OF CONTENTS 1 Introduction ....... 9 2 Specifications ......10 3 Theory of Operation . - Page 6 6.9 Controller Configuration ......24 6.10 Probe Parameters Menu ......24 6.10.1 R0 .
- Page 7 9.1 Temperature Range ......35 9.2 Viscosity ........35 9.3 Specific heat .
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Page 8: Introduction
Introduction Introduction and environmentally protected to minimize The Hart Scientific Model 6054 Calibration Bath is a gradients. highly stable constant temperature liquid bath. It has • been designed for calibrating liquid and glass ther- The fluid level is near the top of the test well to... -
Page 9: Specifications
Specifications Specifications Table 1 Specifications Power Required ..230 VAC; 60 Hz; 15 Amps max. Bath Temperature Range ..50°C to 325°C ±0.005°C to 200°C, ±0.010°C to 325°C Temperature Stability..±0.005°C max Temperature Uniformity . -
Page 10: Theory Of Operation
Theory of Operation The components, features and operational theory of (a few milli-°C per minute) over the desired range. the Model 6054 calibration bath are described in this This allows the control noise to be eliminated al- section. though greater skill is required in making calibrations. -
Page 12: The Controller Panel
Theory of Operation EXIT — Used to exit from a menu. When EXIT is heater control is via the Drift Adjust control and the pressed any changes made to the displayed value will Heating select switch. be ignored. 2) The DRIFT ADJUST control is a variable trans- 3) The control indicator is a two color light emitting di- former that adjusts the Low control heater through 0 ode (LED). - Page 13 Theory of Operation Figure 3 Back panel...
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Page 14: The Rear Panel
Theory of Operation temperature controller triac to prevent exceeding the 2) The unit SERIAL NO. is located at the top right cor- desired set temperature. The boost heater indicator ner of the back panel. When consulting with the fac- will flash when the set temperature has been reached tory, refer to the serial number. -
Page 15: Installation
Inspect the probe. It should not be bent or damaged in must be level, use the levelers. Allow free air space any way. The probe used with the Model 6054 is a pre- around the bath to allow surface heat to convect away cision PRT sensor. -
Page 16: Filling The Bath With Oil
Installation 4.3.1.1 Filling the Bath With Oil can be adjusted somewhat by adding to or removing fluid. The fluid level during pumping should be flowing To fill the bath with oil, first be sure the drain is fully over the rim. closed off. -
Page 17: Operating Instructions
Quick Start It is advised that you operate the 6054 bath with an access cover or thermometer holder in place. At most With the bath fluid in the bath and the control probe in temperatures, control stability is improved with the place, the bath is ready to be turned on. -
Page 18: Controller Operation
Controller Operation Controller Operation This Section discusses in detail how to operate the until the user resets the cutout. To access the reset bath temperature controller using the front control cutout function press the “SET” button. panel. Using the front panel key switches and LED display the user may monitor the bath temperature, Access cutout reset function set the temperature set-point in degrees C or F, moni-... - Page 19 Controller Operation Display Secondary Functions Temperature EXIT Display Power EXIT Reset Cutout EXIT Cutout Active EXIT Set Proportional Band Select Setpoint EXIT EXIT Set Cutout Temp. Adjust Setpoint EXIT EXIT Adjust Vernier EXIT Set Scale °C/°F EXIT Configuration Menu EXIT EXIT EXIT EXIT...
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Page 20: Set-Point Value
Controller Operation is shown at the left on the display followed by the cur- 6.3.3 Set-point vernier rent set-point value. The set-point value can be set with a resolution of Bath temperature in degrees 25.00 C 0.01°C. The user may want to adjust the set-point Celsius slightly to achieve a more precise bath temperature. -
Page 21: Secondary Menu
Controller Operation percent heating power should not fluctuate more than ±1% within one minute. Access set-point value The heater power display is accessed in the second- Set-point value C 25.00 ary menu. Press “SET” and “EXIT” simultaneously and release. The heater power will be displayed as a percentage of full power. -
Page 22: Cutout
Controller Operation Proportional Band too Narrow Proportional Band too Wide Optimum Proportional Band Figure 5 Bath temperature flucuations at various proportional band settings. change. Of these, the most significant factors affect- ing the optimum proportional band width are the fluid Access proportional band viscosity and thermal noise due to difference in tem- perature between the fluid and ambient. -
Page 23: Controller Configuration
Controller Operation most importantly, protects the bath fluids from being heated beyond the safe operating temperature pre- Accept cutout set-point venting hazardous vaporization, breakdown, or igni- The next function is the configuration menu. Press tion of the liquid. The cutout temperature is “EXIT”... -
Page 24: Alpha
Controller Operation 6.10.2 ALPHA Stirrer mode selection parame- Str Act This probe parameter refers to the average sensitivity Press “SET” to access the parameter setting. of the probe between 0 and 100°C. Normally this is set for 0.00385°C Stirrer is set for automatic acti- Str=Auto vation at the stirrer set-point temperature. -
Page 25: Baud Rate
Controller Operation 6.12.1 BAUD Rate 6.12.3 Duplex Mode The BAUD rate is the first parameter in the menu. The The next parameter is the duplex mode. The duplex BAUD rate setting determines the serial communica- mode may be set to full duplex or half duplex. With full tions transmission rate. -
Page 26: Ieee-488 Address
This is not adjustable by software but is adjusted with an internal potentiometer. For the IEEE-488 interface address AddrESS 6054 bath this parameter should read between 560 and 570. Press “SET” to access the address setting. Current IEEE-488 interface ad- Add= 22 6.14.2... -
Page 27: Digital Communication Interface
IBM PC and Compatibles The serial communications cable attaches to the bath through the D-9 connector on the back panel. Figure 6 shows the pin-out of this connector and suggested 6054 Controller Computer (DTE) cable wiring. Connector Connector (DB 9-Pin) -
Page 28: Duplex Mode
Digital Communication Interface interface approximately every five seconds. The auto- 7.2.1 Setup and Address Selection matic sampling is disabled with a sample period of 0. Press “SET” to choose to set the sample period. Ad- To use the IEEE-488 interface first connect an just the period with “UP”... - Page 29 Digital Communication Interface Table 2 Communications Commands Command Command Returned Acceptable Command Description Format Example Returned Example Values Display Temperature Read current set-point s[etpoint] set: 9999.99 {C or F} set: 150.00 C Set current set-point to n s[etpoint]=n s=450 Instrument Range Read vernier v[ernier] v: 9.99999...
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Page 30: Power Commands
Digital Communication Interface Communications Commands, cont. Command Command Returned Acceptable Command Description Format Example Returned Example Values Set serial linefeed mode to on lf[eed]=on lf=on Set serial linefeed mode to off lf[eed]=of[f] lf=of Calibration Menu Read C0 calibration parameter c0: 9 c0: 0 Set C0 calibration parameter to n *c0=n... -
Page 31: Heater Settings For Control
“OFF” . Otherwise, the interface would not be rameter) will return “f1:1” or “f1:0” depending on able to switch these functions off. The 6054 bath has whether heater 1 is on or off respectively. five control functions with the digital interface. These... -
Page 32: Bath Calibration
Bath Calibration Bath Calibration Calibration Points In some instances the user may want to calibrate the bath to improve the temperature set-point accuracy. In calibrating the bath R0 and ALPHA are adjusted to Calibration is done by adjusting the controller probe minimize the set-point error at each of two different calibration constants R0 and ALPHA so that the tem- bath temperatures. -
Page 33: Measuring The Set-Point Error
Bath Calibration and 120°C may allow the bath to have a better accu- the future. The new values R0′ and ALPHA′ are com- racy of maybe ±0.01°C over the range 75 to 125°C but puted by entering the old values for R0 and ALPHA, outside that range the accuracy may be only ±0.05°C. -
Page 34: Bath Heat Transfer Fluid
Bath Heat Transfer Fluid Bath Heat Transfer Fluid Many fluids will work with 6054 bath. Choosing a fluid compensate for the reduced response time. Other- requires consideration of many important character- wise the temperature may begin to oscillate. istics of the fluid. Among these are temperature... -
Page 35: Fluid Lifetime
Bath Heat Transfer Fluid 9.9.1 Commonly used fluids Fluid lifetime Below is a description of some of the more commonly Many fluids degrade over time because of vaporiza- used fluids and their characteristics. tion, water absorption, gelling, or chemical break- down. -
Page 36: Silicone Oil
Bath Heat Transfer Fluid Table 6 Table of Bath Fluids Fluid Lower Upper Specific Thermal Thermal (# = Hart Temperatur Temperatur Flash Viscosity Specific Heat Conductivity Expansion Resistivity Part No.) e Limit* e Limit* Point (centistokes) Gravity (cal/g/°C) (cal/s/cm/°C) (cm/cm/°C) -cm ) Halocarbon 0.8 –90°C (v)**... - Page 37 Bath Heat Transfer Fluid –100°C 0°C 100°C 200°C 300°C 400°C 500°C 600°C Silicone Oil FL 302°C 10 CS Silicone Oil FL 280°C 10 CS 200.50 Silicone Oil FL 232°C 10 CS 200.20 Silicone Oil FL 163°C 10 CS 200.10 Silicone Oil FL 133°C 10 CS 200.05...
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Page 38: Fluid Characteristics Charts
Bath Heat Transfer Fluid which can ignite or destroy materials. Especially dan- 9.10.1 Limitations and Disclaimer gerous are spills since the hot fluid is difficult to con- tain. Salt may also cause steam explosions if it comes The information given in this manual regarding fluids into contact with water. - Page 39 Bath Heat Transfer Fluid conditions. We assume the bath is well covered at this Fuming or evaporation is excessive. Large amounts point. This is also subject to company policy. of heater power may be required because of the heat of vaporization. Flash Point: This is the point at which ignition may oc- cur.
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Page 40: 10 Troubleshooting
Troubleshooting 10 Troubleshooting In the event that the user of the 6054 bath encounters cut-out disconnects power to the heater when the difficulty in operation this section may help to find and bath temperature exceeds the cut-out set-point. This solve the problem. Several possible problem condi-... -
Page 41: The Displayed Process Temperature Is In Error And The Controller Remains In The Cooling Or Heating State At Any Set-Point Value
Troubleshooting gram the constants. It may be that the memory 10.4 The Displayed Process backup battery is weak causing errors in data as de- scribed in Section 10.3. Temperature Is In Error And Check that the control probe has not been struck, The Controller Remains In The bent, or damaged.