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31

Controller Operation

Well Temperature

9 Controller

Operation

This chapter discusses in detail how to operate the bath temperature controller using
the front control panel. Using the front panel key-switches and LED dis play the user
may monitor the well temperature, set the temperature set-point in degrees C or F,
monitor the heater output power, adjust the controller propor tional band, and program
the calibration parameters, operating parameters, and serial interface configuration.
Operation of the functions and parameters are shown in the flowchart in Figure 7 on
page 32. This chart may be copied for reference.

In the following discussion a button with the word SET, UP, DOWN or EXIT
inside indicates the panel button while the dotted box indicates the display reading.
Explanation of the button or display reading are to the right of each button or display
value.

Well Temperature

9.1

The digital LED display on the front panel allows direct viewing of the actual well
temperature. This temperature value is what is normally shown on the dis play. The
units, C or F, of the temperature value are displayed at the right. For example,

100.00C

Well temperature in degrees Celsius

The temperature display function may be accessed from any other function by pressing
the “EXIT” button.

9.2 Temperature

Set-point

The temperature set-point can be set to any value within the range and resolu tion as
given in the specifications. Be careful not to exceed the safe upper tem perature limit of
any device inserted into the well.

Setting the temperature involves selecting the set-point memory and adjusting the set-
point value.

Programmable Set-points

9.2.1

The controller stores 8 set-point temperatures in memory. The set-points can be
quickly recalled to conveniently set the calibrator to a previously programmed
temperature set-point.

To set the temperature one must first select the set-point memory. This function is
accessed from the temperature display function by pressing “SET”. The number of the
set-point memory currently being used is shown at the left on the display followed by
the current set-point value.

1.888.475.5235

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Содержание 6102

Страница 1: ...nuary 2013 2013 Fluke Corporation All rights reserved Specifications are subject to change without notice All product names are trademarks of their respective companies PN 3729224 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Страница 2: ...btain warranty service contact your nearest Fluke authorized service center to obtain return authorization information then send the product to that service center with a description of the difficulty postage and insurance prepaid FOB Destination Fluke assumes no risk for damage in transit Following warranty repair the product will be returned to Buyer transportation prepaid FOB Destination If Flu...

Страница 3: ... Quick Start 11 4 1 Unpacking 11 4 2 Setup 11 4 3 Power 12 4 4 Setting the Temperature 12 5 Installation 13 5 1 Bath Environment 13 5 2 Dry out Period 13 5 3 Bath Preparation and Filling 13 5 4 Power 14 6 Bath Use 15 6 1 General 15 6 2 Comparison Calibration 15 6 3 Calibration of Multiple Probes 16 7 Parts and Controls 17 7 1 Back and Bottom Panel 17 7 2 Front Panel 18 7 3 Accessories 19 7 3 1 Tra...

Страница 4: ...uids 23 8 2 10 1 Water Distilled 24 8 2 10 2 Mineral Oil 24 8 2 10 3 Silicone Oil Dow Corning 200 10 200 20 24 8 2 11 Fluid Characteristics Charts 24 8 2 11 1 Limitations and Disclaimer 25 8 2 11 2 About the Graph 26 8 3 Stirring 27 8 4 Power 28 8 5 Heater 28 8 6 Fluid Drain 28 8 7 Temperature Controller 28 9 Controller Operation 31 9 1 Well Temperature 31 9 2 Temperature Set point 31 9 2 1 Progra...

Страница 5: ... 9 11 2 Sample Period 41 9 11 3 Duplex Mode 42 9 11 4 Linefeed 42 9 12 Calibration Parameters 43 9 12 1 R0 43 9 12 2 ALPHA 43 9 12 3 DELTA 43 9 12 4 C0 and CG 44 9 12 5 rCAL 44 10 Digital Communication Interface 45 10 1 Serial Communications 45 10 1 1 Wiring 45 10 1 2 Setup 45 10 1 2 1 Baud Rate 46 10 1 2 2 Sample Period 46 10 1 2 3 Duplex Mode 46 10 1 2 4 Linefeed 46 10 1 3 Serial Operation 46 10...

Страница 6: ... 12 2 1 Compute DELTA 52 12 2 2 Compute R0 ALPHA 52 12 2 3 Accuracy Repeatability 53 13 Maintenance 55 14 Troubleshooting 57 14 1 Troubleshooting Problems Possible Causes and Solutions 57 14 2 CE Comments 58 14 2 1 EMC Directive 58 14 2 2 Low Voltage Directive Safety 58 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Страница 7: ...cal Symbols 1 Table 2 Speciﬁcations 9 Table 3 Table of Various Bath Fluids 25 Table 4 Nominal Stirrer Motor Settings With Different Liquids 28 Table 5 Controller Communications Commands 48 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Страница 8: ... Front Panel 18 Figure 3 Bath Lids and Lid Parts 19 Figure 4 Probe Basket 20 Figure 5 Stir Bar 20 Figure 6 Chart of Various Bath Fluids 26 Figure 7 Controller Operation Flowchart 32 Figure 8 Serial Cable Wiring 45 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Страница 9: ...be used on the instrument or in this manual Table 1 International Electrical Symbols Symbol Description AC Alternating Current AC DC Battery CE DC Double Insulated Electric Shock Fuse PE Ground Hot Surface Burn Hazard Read the User s Guide Important Information Off On Canadian Standards Association 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Страница 10: ...bration work The instrument was designed for temperature calibration Any other use of the unit may cause unknown hazards to the user DO NOT overfill the bath Overflowing extremely cold or hot fluid may be harmful to the operator See Section 5 3 Bath Preparation and Filling for specific instructions DO NOT install access cover without holes onto a bath that is energized Dangerous pressures may resu...

Страница 11: ...this instrument will operate properly This instrument must be plugged into an AC only electric outlet as listed in Section 3 1 Specifications The power cord of the instrument is equipped with a three pronged grounding plug for your protection against electrical shock hazards It must be plugged directly into a properly grounded three prong receptacle The receptacle must be installed in accordance w...

Страница 12: ...l if no other action is successful in correcting a malfunction You must have a copy of the most recent Report of Test to restore the test parameters Most probes have handle temperature limits Be sure that the probe handle temperature limit is not exceeded in the air above the instrument The instrument and any thermometer probes used with it are sensitive instruments that can be easily damaged Alwa...

Страница 13: ...e energizing the instrument Components and heater lifetime can be shortened by continuous high temperature operation DO NOT operate the instrument without fluid The input voltage and heater voltage switch settings must always be set to the same value 1 3 Authorized Service Centers Please contact one of the following authorized Service Centers to coordinate service on your Hart product 1 888 475 52...

Страница 14: ...vice Centers 6 When contacting these Service Centers for support please have the following information available Model Number L Serial Number L Voltage L Complete description of the problem L 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Страница 15: ... L The temperature is accurately controlled by Hart s digital controller The controller uses a precision platinum RTD as a sensor and controls the well temperature with a solid state relay triac driven heater The LED front panel continuously shows the current well temperature The temperature may be easily set with the control buttons to any desired temperature within the specified range The calibr...

Страница 16: ...1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Страница 17: ... 5 deep 48 x 139 mm Size 5 5 W x 10 38 H x 8 D 14 x 26 x 20 cm Weight 10 lb 4 5 kg with fluid Power 115 VAC 10 12 3 A or 230 VAC 10 1 1 A switchable 50 60 Hz 270 W System Fuse 115 V 250 V 3A F 230 V 250 V 1 6A F Safety Overvoltage Installation Category II Pollution Degree 2 per IEC 61010 01 3 2 Environmental Conditions Although the instrument has been designed for optimum durability and trouble fr...

Страница 18: ...1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Страница 19: ... into a grounded mains outlet Observe that the nominal voltage corresponds to that indicated on the back of the calibrator Carefully insert the probe basket into the tank Fill the tank with the appropriate fluid The set point temperature and the number of and size of probes determine the fluid level Be sure to keep the fluid level an adequate distance below the top of the well to prevent overflowi...

Страница 20: ... turn on and begin to heat to the previously programmed temperature set point The front panel LED display will indicate the actual bath temperature Setting the Temperature 4 4 Section 9 2 explains in detail how to set the temperature set point on the calibrator using the front panel keys The procedure is summarized here Press SET twice to access the set point value 1 Press UP or DOWN to change the...

Страница 21: ...rt and any time the instrument has not been energized for more than 10 days the bath will need to be energized for a dry out period of 1 2 hours before it can be assumed to meet all of the safety requirements of the IEC 61010 1 5 3 Bath Preparation and Filling The 6102 Micro Bath is not provided with a fluid Various fluids are available from Hart Scientific and other sources Depending on the desir...

Страница 22: ...wer 5 4 With the bath power switch off plug the bath into an AC mains outlet of the appropriate voltage frequency and current capacity Refer to Section 3 1 Specifications for power details 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Страница 23: ...h a clean soft cloth or paper towel before inserting it into another bath This prevents the mixing of fluids from one bath to another If the probe has been calibrated in liquid salt carefully wash the probe in warm water and dry completely before transferring it to another fluid Always be sure that the probe is completely dry before inserting it into a hot fluid Be aware that cleaning the probe ca...

Страница 24: ...be achieved by starting at the highest temperature and progressing down to the lowest temperature Probes can be held in place in the bath by using probe clamps or drilling holes in the access cover Other fixtures to hold the probes can be designed The object is to keep the reference probe and the probe s to be calibrated as closely grouped as possible in the working area of the bath Bath stability...

Страница 25: ...tion 115V 115V HEATER VOLTAGE SWITCH 115V HEATER VOLTAGE SWITCH 115 VAC 3 A 230 VAC 1 6 A 50 60 Hz 115 V 3 250 V 230 V 250 V A F 1 6 A F POWER DISPLAY HOLD RS 232 HEA TER VOL T AGE SWITCH 115 VAC 3 A 230 VAC 1 6 A 50 60 Hz 115 V 3 250 V 230 V 250 V A F 1 6 A F POWER Back View Bottom View Figure 1 6102 Back Panel and Bottom Heater Voltage Switch To be used only when changing the input voltage See S...

Страница 26: ...ntroller Keypad The four button keypad allows easy setting of the set point temperature The control buttons SET DOWN UP and EXIT are used to set the calibrator temperature set point access and set other operating parameters and access and set calibration parameters Setting the control temperature is done directly in degrees of the current scale It can be set to 0 01 degrees Celsius or Fahrenheit T...

Страница 27: ...ess Cover optional Guide Ring Bath Lids and Lid Parts Access Cover Optional 7 3 2 An aluminum access cover Figure 3 may be purchased for optimum stability Holes should be drilled in the access cover to allow insertion of the probes into the tank The holes must be within the guide ring for the probes to fit into the probe basket Probe Basket 7 3 3 A probe basket Figure 4 is provided as a guide for ...

Страница 28: ...s onto the tank and is equipped with an O ring Thread the extender down using the wrench until the O ring makes a good seal Some fluids may expand up to 6 35 cm 2 5 inches Therefore when using the tank extender keep in mind how much the fluid will expand Do not overfill the tank Ensure that the tank extender does not leak where the tank extender and the tank meet Do not use the extender without th...

Страница 29: ...g the unit into 230 V if the heater switch and fuse holder read 115 V This will cause the fuses to blow and may damage the instrument 8 2 Bath Fluid Many fluids work with the 6102 bath Choosing a fluid requires consideration of many important characteristics of the fluid Among these are temperature range viscosity specific heat thermal conductivity thermal expansion electrical resistivity fluid li...

Страница 30: ...lly a lower specific heat means quicker heating and cooling The proportional band may require some adjustment depending on the specific heat of the fluid Thermal Conductivity 8 2 4 Thermal conductivity measures how easily heat flows through the fluid Thermal conductivity of the fluid affects the control stability temperature uniformity and probe temperature settling time Fluids with higher conduct...

Страница 31: ...he fluid to consider is the flash point The flash point is the temperature at which there is sufficient vapor given off so that when there is sufficient oxygen present and a ignition source is applied the vapor will ignite This does not necessarily mean that fire will be sustained at the flash point The flash point may be either of the open cup or closed cup type Either condition may occur in a ba...

Страница 32: ...mperature increases so be careful not to fill the bath too full that it overflows when heated The viscosity and thermal characteristics of mineral oil is poorer than water so temperature stability will not be as good Mineral oil has very low electrical conductivity Use caution with mineral oil since it is flammable and may also cause serious injury if inhaled or ingested Silicone Oil Dow Corning 2...

Страница 33: ... fr 95 C b NONE 1 25 C 0 4 75 C 1 00 1 00 0 0014 0 0002 25 C Ethylene Glycol 50 5020 30 C fr 90 C b NONE 7 0 C 2 50 C 0 7 100 C 1 05 0 8 0 C 0 001 Mineral Oil No 7 5011 10 C v 166 C fl 168 C 15 75 C 5 125 C 0 87 25 C 0 84 75 C 0 81 125 C 0 48 25 C 0 53 75 C 0 57 125 C 0 00025 25 C 0 0007 50 C 5 25 C Silicone Oil Type 200 05 5010 40 C v 130 C fl cc 133 C 5 25 C 0 92 25 C 0 4 0 00028 25 C 0 00105 10...

Страница 34: ... important qualities of the fluids shown Temperature Range The temperature scale is shown in degrees Celsius The fluids general range of application is indicated by the shaded bands Qualities including pour point freeze point important viscosity points flash point boiling point and others may be shown 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Страница 35: ...r to the flash point discussion in Section 8 2 8 Boiling Point At or near the boiling point of the fluid the temperature stability is difficult to maintain Fuming or evaporation is excessive Large amounts of heater power may be required because of the heat of vaporization Decomposition The temperature may reach a point at which decomposition of the fluid begins Further increasing the temperature m...

Страница 36: ... is data which indicates the controller hardware configuration This data is used in some circumstances for diagnostic purposes Heater 8 5 The power to the bath is precisely controlled by the temperature controller to maintain a constant bath temperature Power is controlled by periodically switching the heater on for a certain amount of time using a solid state relay Fluid Drain 8 6 The fluid may b...

Страница 37: ...r may be operated in temperature units of degrees Celsius or Fahrenheit The controller is operated and programmed from the front control panel using the four key switches and digital LED display The controller is equipped with a serial RS 232 digital interface for remote operation Operation of the controller using the front control panel is discussed in Section 9 Operation using the digital interf...

Страница 38: ...1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Страница 39: ...perature This temperature value is what is normally shown on the display The units C or F of the temperature value are displayed at the right For example 100 00C Well temperature in degrees Celsius The temperature display function may be accessed from any other function by pressing the EXIT button 9 2 Temperature Set point The temperature set point can be set to any value within the range and reso...

Страница 40: ... Adjust CG Adjust 200 ohm EXIT EXIT EXIT EXIT EXIT UP DOWN DOWN SET SET SET UP Display Power Toggles C F SET SET Select Setpoint Adjust Setpoint Units C F Scan On Off Scan Rate Display Temperature Configuration Menu Secondary Functions X5 Stir Speed Adj Stir Speed Toggles Display of Rs Switch Hold Display Mode EXIT Set Proportional Band Cut out R0 Adj DELTA rCAL Menu Legend Press SET to step throu...

Страница 41: ...e well temperature Press UP or DOWN to adjust the set point value 125 00 New set point value When the desired set point value is reached press SET to accept the new value and access the temperature scale units selection If EXIT is pressed instead of SET any changes made to the set point are ignored 2Accept new set point value Temperature Scale Units 9 2 3 The temperature scale units of the control...

Страница 42: ...off Sc On Scan function on Press SET to accept the present setting and continue 2Accept scan setting 9 3 2 Scan Rate The next function in the main menu is the scan rate The scan rate can be set from 1 to 99 9 C min The maximum scan rate however is actually limited by the natural heating or cooling rate of the instrument This is often less than 100 C min especially when cooling The scan rate functi...

Страница 43: ...s in the normal position the hold temperature will follow the well temperature If the Scan Control is OFF and the Hold Temperature Display is being used the temperature at which the switch is activated does not affect the set point temperature However if the Scan Control is ON and the Hold Temperature Display is being used the temperature at which the switch is activated is stored as the new set p...

Страница 44: ...ing steps Connect the switch wires to the terminals on the back of the Micro Bath and 1 place the switch in the well Enable set point scanning by setting the scan to ON in the primary menu 2 see Section 9 3 1 Set the scan rate to a low value say 1 0 C min 3 see Section 9 3 2 If the scan rate is too high you may lose accuracy because of transient temperature gradients If the scan rate is too low th...

Страница 45: ...rily or SET Proportional Band 9 7 In a proportional controller such as this the heater output power is proportional to the well temperature over a limited range of temperatures around the set point This range of temperature is called the proportional band At the bottom of the proportional band the heater output is 100 At the top of the proportional band the heater output is 0 Thus as the temperatu...

Страница 46: ...SET Press EXIT to continue without storing the new value 2Accept the new proportional band setting Cutout 9 8 As a protection against a hardware fault or user error the calibrator is equipped with an adjustable cutout device that shuts off power to the heater if the tank temperature exceeds a set value This protects the instrument and probes from excessive temperatures The cutout temperature is pr...

Страница 47: ...bration parameters which are programmable via the front panel These are accessed from the secondary menu after the proportional band function by pressing SET Pressing SET again enters the first of three sets of configuration parameters operating parameters serial interface parameters and calibration parameters The menus are selected using the UP and DOWN keys and then pressing SET See Figure 7 on ...

Страница 48: ...HL and then displays the setting H 126 Current HL setting Adjust the HL parameter using the UP or DOWN keys H 90 New HL setting To store the new setting press SET Press EXIT to continue without storing the new value Cutout Reset Mode 9 10 3 The Cutout Reset Mode determines whether the cutout resets automatically when the tank temperature drops to a safe value or must be manually reset by the opera...

Страница 49: ...by bAUd Flashes bAUd and then displays the setting 2400 b Current BAUD rate The BAUD rate of the serial communications may be programmed to 300 600 1200 2400 4800 or 9600 BAUD Use UP or DOWN to change the BAUD rate value 4800 b New BAUD rate 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 Sample Period 9 11 2 The sample peri...

Страница 50: ...e executed but not echoed The duplex mode parameter is indicated by dUPL Flashes dUPL and then displays the setting d FULL Current duplex mode setting The mode may be changed using UP or DOWN and pressing SET d HALF New duplex mode setting Linefeed 9 11 4 The final parameter in the serial interface menu is the linefeed mode This parameter enables on or disables off transmission of a linefeed chara...

Страница 51: ...oper operation of the bath The calibration parameters menu is indicated by CAL Calibration parameters menu Press SET five times to enter the menu The calibration parameters R0 ALPHA DELTA C0 CG and rCAL characterize the resistance temperature relationship of the platinum control sensor These parameters may be adjusted by an experienced user to improve the accuracy of the calibrator R0 9 12 1 This ...

Страница 52: ...mmed at the factory when the bath is calibrated DO NOT alter the value of these parameters If the user desires to calibrate the bath for improved accuracy then calibrate R0 ALPHA and DELTA according to the procedure in Section 12 rCAL 9 12 5 DO NOT adjust this parameter It is for factory use only 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Страница 53: ... 1 The serial communications cable attaches to the calibrator through the DB 9 connector at the back of the instrument Figure 8 shows the pin out of this connector and suggested cable wiring To eliminate noise the serial cable should be shielded with low resistance between the connector DB 9 and the shield If the unit is used in a heavy industrial setting the serial cable must be limited to ONE ME...

Страница 54: ...et the sample rate to the displayed value Duplex Mode 10 1 2 3 The next parameter is the duplex mode indicated with dUPL The duplex mode may be set to half duplex HALF or full duplex FULL With full duplex any commands received by the thermometer via the serial interface will be immediately echoed or transmitted back to the device of origin With half duplex the commands will be executed but not ech...

Страница 55: ...t a parameter or display a parameter depending on whether or not a value is sent with the command following a character For example s CR will return the current set point and s 150 0 CR will set the set point to 150 0 degrees In the following list of commands characters or data within brackets and are optional for the command A slash denotes alternate characters or data Numeric data denoted by n m...

Страница 56: ...to 999 Set serial duplex mode du plex f ull h alf FULL or HALF Set serial duplex mode to full du plex f ull du f Set serial duplex mode to half du plex h alf du h Set serial linefeed mode lf eed on of f ON or OFF 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 R0 calibration parameter r 0 r r0 999 999 r0 100 578 Set R0 calibrat...

Страница 57: ... the well it may be compared to the calibrator display temperature The display temperature should be stable to within 0 1 C degree for best results Caution Never introduce any foreign material into the well Stabilization and Accuracy 11 2 The stabilization time of the Micro Bath depends on the conditions and temperatures involved Typically the test well will be stable to 0 1 C within 10 minutes of...

Страница 58: ...1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Страница 59: ... for shorter ranges when using temperatures that are just within the most useful operating range of the Micro Bath The farther apart the calibration temperatures the larger will be the calibrated temperature range but the calibration error will also be greater over the range If for instance 50 C to 150 C is chosen as the calibration range then the calibrator may achieve an accuracy of say 0 3 C ov...

Страница 60: ...sistance at 50 0 C T2 and R2 are the measured temperature and resistance at 90 0 C T3 and R3 are the measured temperature and resistance at 150 0 C Compute R0 ALPHA 12 2 2 a T delta T T 1 1 1 1 100 1 100 a T delta T T 3 3 3 3 100 1 100 rzero R a R a a a 3 1 1 3 1 3 alpha R R R a R a 1 3 3 1 1 3 Where delta is the new value of DELTA computed above Program the new values for DELTA delta R0 rzero and...

Страница 61: ... is displayed Press SET to accept the new value Repeat step 2 for ALPHA and DELTA 3 Accuracy Repeatability 12 2 3 Check the accuracy of the Micro Bath at various points over the calibrated range If Micro Bath does not pass specification at all set points repeat the Calibration Procedure 1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Страница 62: ...1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Страница 63: ...th care Avoid knocking or dropping the L instrument If a hazardous material is spilt on or inside the equipment the user is L responsible for taking the appropriate decontamination steps as outlined by the national safety council with respect to the material If the mains supply cord becomes damaged replace it with a cord with the L appropriate gauge wire for the current of the instrument If there ...

Страница 64: ...1 888 475 5235 info Fluke Direct com Fluke Direct com ...

Страница 65: ...e scan and scan rate settings may be set to unwanted values Check the Scan and Scan Rate settings The scan may be off if the unit seems to be responding too quickly The scan may be on with the Scan Rate set low if unit seems to be responding too slowly An o is displayed at the left of the display External switch is open The external switch is open causing the displayed temperature to be frozen and...

Страница 66: ... of the same rating voltage and type Never replace the fuse with one of a higher current rating CE Comments 14 2 EMC Directive 14 2 1 Hart Scientifics equipment has been tested to meet the European Electromagnetic Compatibility Directive EMC Directive 89 336 EEC The Declaration of Conformity for your instrument lists the specific standards to which the unit was tested For units used in the field a...

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