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Summary of Contents for Fluke 6050H
- Page 1 6050H Calibration Bath User's Guide PN 3729208 March 2016 © 2016 Fluke Corporation. All rights reserved. Specifications are subject to change without notice. All product names are trademarks of their respective companies.
- Page 2 Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is available only if product is purchased through a Fluke authorized sales outlet or Buyer has paid the applicable international price.
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Page 3: Table Of Contents
Before You Start ..................1 Symbols Used ................... 1 Safety Information ................2 Cautions .................... 6 How to Contact Fluke Calibration ............7 Product Introduction ................8 Specifications and Environmental Conditions ........9 Specifications ..................9 Environmental Conditions ..............10 Quick Start ..................... - Page 4 6050H User's Guide Temperature Controller ..............26 Controller Operation ................27 Bath Temperature ................27 Reset Cutout ..................27 Temperature Set-point ............... 29 Programmable Set-points .............. 29 Set-point Value ................30 Set-point Vernier ................30 Temperature Scale Units ..............31 Secondary Menu ................
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Page 5: List Of Tables
List of Tables Table Title Page Symbols ..................... 1 Interface Command Summary ..............47 Power Control Commands ................ 50... - Page 6 6050H User's Guide...
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Page 7: List Of Figures
List of Figures Figure Title Page 6050H Bath Cross Section (Optional Cart Shown) ........8 Tipping Prevention Bracket Installation ............. 16 Front Panel ....................18 Bath and Lid Components ................. 20 Back Panel Features ................. 23 Controller Operation Flow Chart ..............28 Bath Temperature Fluctuation at Various Proportional Band Settings .. - Page 8 6050H User's Guide...
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Page 9: Before You Start
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. Table 1. Symbols Symbol Description WARNING. HAZARDOUS VOLTAGE. Risk of electric shock. WARNING - RISK OF DANGER. -
Page 10: Safety Information
• Fluke Calibration does not recommend that user’s drain the salt from the bath. Fluke Calibration provides the service of draining salt from the bath. If draining the bath salt is necessary, contact an Authorized Service Center (see the How to Contact Fluke Calibration section) for an RMA and instructions on returning the bath. - Page 11 Calibration Bath Before You Start • DO NOT overfill the bath. Overflowing extremely hot fluid may be harmful to the operator. See the Bath Preparation and Filling section for specific instructions. • Follow all safety guidelines listed in the user’s manual. •...
- Page 12 6050H User's Guide • When immersing any object in the bath, ensure that you are not introducing anything into the bath that will react with the bath salt. Ensure that probes are DRY and free of contaminants. Read the MSDS (Material Safety Data Sheet) for the salt used.
- Page 13 • Always replace the power cord with an approved cord of the correct rating and type. If you have questions, contact an Authorized Service Center (see the How to Contact Fluke Calibration section). • High voltage is used in the operation of this equipment.
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Page 14: Cautions
6050H User's Guide Cautions WCaution • Always operate the instrument in room temperatures listed in the Environmental Conditions section. Allow sufficient air circulation by leaving at least 15 cm (6 inches) of clearance around the instrument. • DO NOT overfill the bath. Overflowing liquid may damage the electrical system. -
Page 15: How To Contact Fluke Calibration
The bath will not operate correctly without the control probe. Injury to operating personnel and permanent damage to the bath could occur. How to Contact Fluke Calibration To contact Fluke Calibration, call one of the following telephone numbers: • Technical Support USA: 1-877-355-3225 •... -
Page 16: Product Introduction
Complete description of the problem Product Introduction The Fluke Calibration 6050H is a constant temperature bath intended mainly for the application of temperature calibration. However, its high stability and the availability of factory modifications make it suitable for other uses as well. -
Page 17: Specifications And Environmental Conditions
Calibration Bath Specifications and Environmental Conditions Specifications and Environmental Conditions Specifications 6050H Range 180 °C to 550 °C † ±0.002 °C at 200 °C (salt) ±0.004 °C at 300 °C (salt) Stability ±0.008 °C at 550 °C (salt) ±0.005 °C at 200 °C (salt) Uniformity ±0.020 °C at 550 °C (salt) -
Page 18: Environmental Conditions
Incorrect handling can damage the bath and void the warranty. This section gives a brief summary of the steps required to set up and operate the 6050H bath. This should be used as a general overview and reference and not as a substitute for the remainder of the manual. -
Page 19: Set Up
Calibration Bath Quick Start Set Up Set up of the bath requires careful unpacking and placement of the bath, filling the bath with fluid, installing the probe and connecting power. Consult the Installation section for detailed instructions for proper installation of the bath. Be sure to place the bath in a safe, clean and level location. - Page 20 6050H User's Guide Press “SET” to select this memory and access the set-point value. Access set-point value Current value of set-point 1, 25.00 °C Press “UP” or “DOWN” to change the set-point value. Increment display ...
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Page 21: Installation
DO NOT place under a cabinet or other structure. Allow for overhead clearance. The 6050H bath is a precision instrument which should be located in an appropriate environment. The location should be free of drafts, extreme temperatures and temperature changes, dirt, etc. The surface where the bath is placed must be level. -
Page 22: Dry-Out" Period
50 °C for 4 hours or more. Bath Preparation and Filling The Model 6050H Bath is only intended to be used with salt. Bath salt is available from Hart Scientific and other sources. Bath salt is discussed in detail in the Bath Fluid section. -
Page 23: Power
Proceed to fill the bath with the applicable bath fluid after reading the entire User's Guide. If you have any questions concerning installation of the tipping prevention brackets, please contact an Authorized Service Center (see the How to Contact Fluke Calibration section). -
Page 24: Bath Use
6050H User's Guide Caster Slots Wall tip.eps Figure 2. Tipping Prevention Bracket Installation Bath Use WCaution Read before placing bath in service. The information in this section is for general information only. It is not designed to be the basis for calibration laboratory procedures. Each laboratory will need to... -
Page 25: General
Bath Use General The 6050H bath is intended tob used with heat transfer salt only. Refer to the MSDS (Material Safety Data Sheet) for information specific to the salt selected. Generally, baths are set to one temperature and used to calibrate probes only at that single temperature. -
Page 26: Calibration Of Multiple Probes
6050H User's Guide When calibrating over a wide temperature range, better results can generally 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. - Page 27 Calibration Bath Parts and Controls 1. The digital display is an important part of the temperature controller. It displays the set-point temperature and bath temperature as well as the various other bath functions, settings, and constants. The display shows temperatures in values according to the selected scale units °C or °F. 2.
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Page 28: Bath Tank And Lid
6050H User's Guide Bath Tank and Lid The bath tank and lid assembly includes (see Figure 4): the tank the control probe the stirring motor the access holes the access hole cover the drain tube WWarning The drain is for factory use only. - Page 29 Calibration Bath Parts and Controls 1. The bath tank is constructed of stainless steel. It is very resistant to oxidation in the presence of most chemicals and over a wide range of temperatures. 2. The control probe provides the temperature feedback signal to the controller allowing the controller to maintain a constant temperature.
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Page 30: Back Panel
6050H User's Guide Back Panel The back panel has six standard features and two optional features (see Figure 4): The back panel of the bath contains the following features (see Figure 5): the bath power cord the stirring motor power socket ... - Page 31 Calibration Bath Parts and Controls back_panel.eps Figure 5. Back Panel Features 1. The probe connector in the back panel is used for the temperature controller probe. 2. The stirrer power is provided for the stirring motor. 3. The power cord 4.
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Page 32: General Operation
6050H User's Guide General Operation Bath Fluid Heat transfer salt is intended to be used with the 6050H bath. Other fluids should not be used. Safety Always consider the safety issues associated with using salt in the Warnings and Cautions sections of the Safety Information section (see the Safety Information section of this manual). -
Page 33: Stirring
See the Stir Mode Select section. Solid salt has poor thermal conductivity. The 6050H bath uses a special "soft start" program to prevent the heaters from being overheated until the salt is completely molten. -
Page 34: Heater
Temperature Controller The bath temperature is controlled by Fluke Calibration’s unique hybrid digital/analog temperature controller (see Figure 3). The controller offers the tight control stability of an analog temperature controller as well as the flexibility and programmability of a digital controller. -
Page 35: Controller Operation
Calibration Bath Controller Operation The controller 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 may also be optionally equipped with a serial RS-232 or IEEE-488 GPIB digital interface for remote operation. - Page 36 6050H User's Guide When the cutout is active and the cutout mode is set to manual (”reset”), the display flashes “cutout” until the user resets the cutout. To access the reset cutout function press the “SET” button. Access cutout reset function figure 7.eps...
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Page 37: Temperature Set-Point
Calibration Bath Controller Operation The display will indicate the reset function. cutout reset function Press “SET” once more to reset the cutout. Reset cutout This action also switches the display to the set temperature function. To return to displaying the temperature press the “EXIT” button. If the cutout is still in the over-temperature fault condition the display continues to flash “cutout”. -
Page 38: Set-Point Value
6050H User's Guide Press “SET” to accept the new selection and access the set-point value. Accept selected set-point memory Set-point Value The set-point value can be set with a resolution of 0.01 °C. The user may want to adjust the set-point slightly to achieve a more precise bath temperature. The set- point vernier allows the temperature to be adjusted below or above the set-point by a small amount with very high resolution. -
Page 39: Temperature Scale Units
Calibration Bath Controller Operation Increment memory New vernier setting Next press “EXIT” to return to the temperature display or “SET” to access the temperature scale units selection. Access scale units Temperature Scale Units The temperature scale units of the controller may be set by the user to degrees Celsius (°C) or Fahrenheit (°F). -
Page 40: Secondary Menu
6050H User's Guide Press “SET” to accept the new selection and resume displaying the bath temperature. Set the new units and resume temperature display Secondary Menu Functions which are used less often are accessed within the secondary menu. The secondary menu is accessed by pressing “SET” and “EXIT”... -
Page 41: Proportional Band
Calibration Bath Controller Operation Proportional Band In a proportional controller such as this the heater output power is proportional to the bath 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 %. - Page 42 6050H User's Guide The proportional band width is easily adjusted from the bath front panel. The width may be set to discrete values in degrees C or F depending on the selected units. The optimum proportional band width setting may be determined by monitoring the stability with a high resolution thermometer or with the controller percent output power display.
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Page 43: Cutout
Calibration Bath Controller Operation Cutout As a protection against software or hardware fault, shorted heater triac, or user error, the bath is equipped with an adjustable heater cutout device that shuts off power to the heater if the bath temperature exceeds a set value. This protects the heater and bath materials from excessive temperatures and, most importantly, protects the bath fluids from being heated beyond the safe operating temperature preventing hazardous vaporization, breakdown, or ignition of the... -
Page 44: Controller Configuration
6050H User's Guide To accept the new cutout set-point press “SET”. Accept cutout set-point The next function is the configuration menu. Press “EXIT” to resume displaying the bath temperature. Controller Configuration The controller has a number of configuration and operating options and calibration parameters which are programmable via the front panel. -
Page 45: Cutout Reset Mode
Calibration Bath Controller Operation Cutout Reset Mode The cutout reset mode determines whether the cutout resets automatically when the bath temperature drops to a safe value or must be manually reset by the operator. The parameter is indicated by, cutout reset mode parameter ... -
Page 46: Stir Set-Point
6050H User's Guide Stir Set-point The stir set-point allows setting of the temperature above which the stir motor activates when the stir activation is set to automatic. To access the paramter press “SET” from the stir activation parameter. Set-point mode selection parameter is indicated by, Stir motor activation set-point parameter ... -
Page 47: Serial Interface Parameters
Calibration Bath Controller Operation Press “UP” or “DOWN” to change the option and then press “SET” to store the setting. Note When using salt as the fluid be sure to always set this option to LO to maximize the lifetime of the heaters. Serial Interface Parameters The serial RS-232 interface parameters menu is indicated by, Serial RS-232 interface parameters menu... -
Page 48: Sample Period
6050H User's Guide 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. If the sample rate is set to 5, the bath transmits the current measurement over the serial interface approximately every five seconds. -
Page 49: Linefeed
Calibration Bath Controller Operation Linefeed The final parameter in the serial interface menu is the linefeed mode. This parameter enables (on) or disables (off) transmission of a linefeed character (LF, ASCII 10) after transmission of any carriage-return. The linefeed parameter is indicated by, Serial linefeed parameter ... -
Page 50: Calibration Parameters
6050H User's Guide Calibration Parameters The operator of the bath controller has access to a number of the bath calibration constants namely CTO, C0, CG, H, and L. 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 bath. -
Page 51: H And L
Calibration Bath Controller Operation The display now shows, Press “SET” to show the current value of Cg. Use the “UP and ”DOWN" keys until the value displayed matches the Cg value on the Report of Calibration. Press “SET” to store the value. The display now shows, ... -
Page 52: Digital Communication Interface
User's Guide Digital Communication Interface If supplied with the option, the 6050H bath is capable of communicating with and being controlled by other equipment through the digital interface. Two types of digital interface are available the RS-232 serial interface and the IEEE-488 GPIB interface. -
Page 53: Setup
Calibration Bath Digital Communication Interface Setup Before operation the serial interface of the bath must first be set up by programming the BAUD rate and other configuration parameters. These parameters are programmed within the serial interface menu. The serial interface parameters menu is outlined in Figure 6. To enter the serial parameter “EXIT”... -
Page 54: Serial Operation
6050H User's Guide 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 set-point and other commands may be sent to the bath via the serial interface to set the bath and view or program the various parameters. -
Page 55: Interface Commands
Calibration Bath Digital Communication Interface Interface Commands The various commands for accessing the bath controller functions via the digital interfaces are listed in this section (see Table 2). These commands are used with both the RS-232 serial interface and the IEEE-488 GPIB interface. In either case the commands are terminated with a carriage-return character. - Page 56 6050H User's Guide Command Returned Acceptable Command Description Command Format Returned Example Example Values Set cutout to n degrees c[utout]=n c=500 Temperatur e Range Reset cutout now c[utout]=r[eset] Read heater power (duty po[wer] po: 9999 po: 1 cycle) Configuration Menu...
- Page 57 Calibration Bath Digital Communication Interface Command Returned Acceptable Command Description Command Format Returned Example Example Values Set serial duplex mode: du[plex]=f[ull]/h[alf] FULL or HALF Set serial duplex mode to du[plex]=f[ull] du=f full Set serial duplex mode to du[plex]=h[alf] du=h half Set serial linefeed mode: lf[eed]=on/of[f] ON or OFF...
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Page 58: Power Control Functions
To allow the interface to control the heating, the front panel controls are disabled by switching the heater switch to “LOW”. Otherwise, the interface would not be able to switch the heater functions off. The 6050H bath has two control functions with the digital interface. These control functions are for heaters settings Med and High. -
Page 59: Calibration Procedure
Calibration Bath Calibration Procedure Calibration Procedure Note This procedure is to be considered a general guideline. Each laboratory should write their own procedure based on their equipment and their quality program. Each procedure should be accompanied by an uncertainty analysis also based on the laboratory's equipment and environment. -
Page 60: Computing R0 And Alpha
6050H User's Guide Computing R0 and ALPHA Before computing the new values for R0 and ALPHA the current values must be known. The values may be found by either accessing the probe calibration menu from the controller panel or by inquiring through the digital interface. The user should keep a record of these values in case they may need to be restored in the future. - Page 61 Calibration Bath Calibration Procedure figure 10.eps Figure 9. Calibration Example...
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Page 62: Maintenance
6050H User's Guide 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. Avoid operating the instrument in dirty or dusty environments. -
Page 63: Troubleshooting
Calibration Bath Troubleshooting WWarning When checking the over-temperature cutout, be sure that the temperature limits of the bath fluid are not exceeded. Exceeding the temperature limits of the bath fluid could cause harm to the operator, lab, and instrument. • The over-temperature cutout should be checked every 6 months to see that it is working properly. - Page 64 6050H User's Guide Problem Causes and Solutions 20°C above the desired maximum bath operating temperature and that the cutout mode is set as desired. Continuous cutout. If the cutout activates when the bath temperature is well below the cutout set-point or...
- Page 65 Calibration Bath Troubleshooting Problem Causes and Solutions If the controller appears to operate normally except that the bath’s temperature does not agree with the temperature measured by the user’s reference thermometer to within the specified accuracy, consider the following: Erroneous parameters. Check that the calibration parameters are all correct according to the Report of Calibration.
- Page 66 6050H User's Guide Problem Causes and Solutions Note Stir Mode Select defaults to “Auto” each time the power of the bath is cycled off and back on. Therefore, this parameter has to be set each time the bath is powered on if “Str-ON” is the desired mode of operation.
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Page 67: Comments
Calibration Bath Troubleshooting Comments EMC Directive Fluke Calibration's 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. Low Voltage Directive (Safety) - Page 68 6050H User's Guide...
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