Related Manuals for Fluke 7009
Summary of Contents for Fluke 7009
- Page 1 Via Acquanera, 29 22100 Como tel. 031.526.566 (r.a.) fax 031.507.984 info@calpower.it www.calpower.it 7009 Calibration Bath User’s Guide 7009____ugeng0000...
- Page 2 The warranty period begins on the date of the shipment. Parts, product repairs, and services are warranted for 90 days. The warranty extends only to the original buyer or end-user customer of a Fluke authorized reseller, and does not apply to fuses, disposable batteries or to any other product, which in Fluke’s opin- ion, has been misused, altered, neglected, or damaged by accident or abnormal conditions of operation or handling.
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Page 3: Table Of Contents
Cautions ........4 Fluke Authorized Service Centers ....5 2 Introduction . - Page 4 Bath Fluid ......21 8.1.1 Temperature Range ....... 21 8.1.2 Viscosity.
- Page 5 9.13 IEEE-488 Parameters Menu..... 41 9.13.1 IEEE-488 Address ....... 41 9.14 Calibration Parameters .
- Page 6 Figures Figure 1 Bath Assembly ......7 Figure 2 Front Controller Panel ......17 Figure 3 Side panel controls .
- Page 7 Tables Table 1 International Electrical Symbols ..... 1 Table 2 Table of various fluids and their properties....25 Table 3 Proportional Band —...
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Page 8: Before You Start
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 International Electrical Symbols Symbol Description AC (Alternating Current) AC-DC Battery CE Complies with European Union Directives... -
Page 9: Safety Information
User’s Guide Symbol Description Canadian Standards Association OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per IEC1010-1 re- fers 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. C-TIC Australian EMC Mark The European Waste Electrical and Electronic Equipment (WEEE) Directive (2002/96/EC) mark. - Page 10 • Always replace the power cord with an approved cord of the correct rat- ing and type. If you have questions, contact a Fluke Fluke Calibration Au- thorized Service Center (see Section 1.3).
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Page 11: Cautions
User’s Guide BATH FLUIDS • Fluids used in this bath may produce noxious or toxic fumes under certain circumstances. Consult the fluid manufacturer’s MSDS (Material Safety Data Sheet). Proper ventilation and safety precautions must be observed. • The instrument is equipped with a soft cutout (user settable firmware) and a hard cutout (set at the factory). -
Page 12: Fluke Authorized Service Centers
♦ Voltage Cut In: ±7.5% (213 - 247 VAC) Fluke Authorized Service Centers Please contact one of the following authorized Service Centers to coordinate service on your Fluke product: Fluke Calibration 799 E. Utah Valley Drive American Fork, UT 84003-9775 Phone: +1.801.763.1600... - Page 13 22 Jianguomenwai Dajie Chao Yang District Beijing 100004, PRC CHINA Phone: +86-10-6-512-3436 Telefax: +86-10-6-512-3437 E-mail: xingye.han@fluke.com.cn Fluke South East Asia Pte Ltd. Fluke ASEAN Regional Office Service Center 60 Alexandra Terrace #03-16 The Comtech (Lobby D) 118502 SINGAPORE Phone: +65 6799-5588 Telefax: +65 6799-5588 E-mail: antng@singa.fluke.com...
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Page 14: Introduction
Introduction Introduction The Fluke Calibration 7009 is a very precise constant temperature bath. An in- novative state of the art solid-state temperature controller has been incorporated which maintains the bath temperature with extreme stability. The controller uses a microcontroller to execute the many operating functions. -
Page 15: Specifications And Environmental Conditions
Specifications and Environmental Conditions Specifications and Environmental Conditions Specifications 0°C to 110°C (32°F to 230°F) Range Soft cutout 50°C † ±0.0007°C (water) Stability at 25°C ±0.001°C (mineral oil 5011) Digital display with push-button data entry Temperature Setting Set-point Resolution 0.002°C; high-resolution mode, 0.00003°C 0.01°C Display Resolution Digital Setting Accuracy... - Page 16 User’s Guide • ambient relative humidity: maximum 80% for temperature <31°C, de- creasing linearly to 50% at 40°C • pressure: 75kPa - 106kPa • mains voltage within ± 10% of nominal • vibrations in the calibration environment should be minimized •...
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Page 17: Quick Start
This chapter gives a brief summary of the steps required to set up and operate the 7009 bath. This should be used as a general overview and reference and not as a substitute for the remainder of the manual. Please read Section 8 carefully before operating the bath. - Page 18 User’s Guide Access set-point selection Set-point 1, 25.0°C currently used 25.0 Press “SET” to select this memory and access the set-point value. Access set-point value 25.00 Current value of set-point 1, 25.00°C Press “UP” or “DOWN” to change the set-point value. Increment display New set-point value 30.00...
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Page 19: Installation
Center (see Section 1.3). Bath Environment The 7009 Bath is a precision instrument which should be located in an appro- priate 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 20: Probe
If damaged, the probe can be replaced. Contact a Fluke Calibration Authorized Service Center for assistance. Insert the probe into the 1/4 inch probe hole at the top left side of the bath lid. -
Page 21: Bath Use
Bath Use Bath Use READ BEFORE PLACING THE BATH IN SERVICE The information in this section is for general information only. It is not de- signed to be the basis for calibration laboratory procedures. Each laboratory will need to write their own specific procedures. General Be sure to select the correct fluid for the temperature range of the calibration. -
Page 22: Calibration Of Multiple Probes
Be sure that all probes are inserted deep enough to prevent stem effect. From research at Fluke Fluke Scientific, we suggest a general rule-of-thumb for immersion depth to reduce the stem effect to a minimum: 15 x the diameter of the UUT + the sensor length. -
Page 23: Parts And Controls
Parts and Controls Parts and Controls Front Control Panel The following controls and indicators are present on the controller front panel (see Figure below): (1) the digital LED display, (2) the control buttons, (3) the bath on/off power switch, (4) the control indicator light, (5) the heater power switch, and (6) the cooling power switch. -
Page 24: Side Panel
User’s Guide (5) The heater power switch is used to select the appropriate heater power lev- els for heating and controlling the bath at various temperatures. (6) The cooling power switch controls power to the cooling compressor and cooling fan. NOTE: Be sure the “Cooling Power Switch”... -
Page 25: Back Panel
4) POWER CORD See Section 3.1, Specifications, for power details. 5) The ELECTRONICS FUSE is located inside the cabinet and is a 1/4 amp fuse. If the fuse needs to be replaced contact a Fluke Calibration Autho- rized Service Center for assistance. -
Page 26: Figure 4 Back Panel
User’s Guide RS-232 IEEE-488 Figure 4 Back Panel WARNING: Extreme care must be taken to prevent harm to the user or the surrounding environment. Do not exceed a 120°C fluid temperature for draining. The valve could be damaged if 120°C is exceeded. Insulate the container from the floor or other objects that may be damaged by high temperatures as required. -
Page 27: General Operation
General Operation General Operation Bath Fluid Many fluids will work with 7009 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, electri- cal conductivity, fluid lifetime, safety, and cost. -
Page 28: Thermal Conductivity
User’s Guide 8.1.4 Thermal Conductivity Thermal conductivity measures how easily heat flows through the fluid. Ther- mal conductivity of the fluid affects the control stability, temperature unifor- mity, and probe temperature settling time. Fluids with higher conductivity distribute heat more quickly and evenly improving bath performance. 8.1.5 Thermal Expansion Thermal expansion describes how the volume of the fluid changes with temper-... -
Page 29: Water
8.1.10.5 Silicone Oil Silicone oils are available which offer a much wider operating temperature range than mineral oil. These oils are more expensive as well. For information on silicone oils contact Fluke Calibration. -
Page 30: Stirring
User’s Guide Figure 5 Chart of various bath fluids and their properties. Stirring Stirring of the bath fluid is very important for stable temperature control. The fluid must be mixed well for good temperature uniformity and fast controller response. The stirrer is precisely adjusted for optimum performance. -
Page 31: Power
General Operation Table 2 Table of various fluids and their properties. Fluid Lower Upper Thermal Thermal (# = Fluke Part Temperature Temperature Flash Viscosity Specific Specific Heat Conductivity Expansion Resistivity Ω-cm ) No.) Limit* Limit* Point (centistokes) Gravity (cal/g/°C) (cal/s/cm/°C) (cm/cm/°C) -
Page 32: Heater
User’s Guide perature, and the heater will turn on or off until the bath temperature reaches the programmed set-point. When powered on the control panel display will briefly show a four digit num- ber. This number indicates the number of times power has been applied to the bath. -
Page 33: Temperature Controller
General Operation Temperature Controller The bath temperature is controlled by Fluke Calibration’s unique hybrid digi- tal/analog temperature controller. The controller offers the tight control stability of an analog temperature controller as well as the flexibility and programmabil- ity of a digital controller. -
Page 34: Controller Operation
Controller Operation 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 bath temperature, set the temperature set-point in degrees C or F, monitor the heater output power, adjust the controller propor- tional band, set the cutout set-point, and program the probe calibration parame- ters, operating parameters, serial and IEEE-488 interface configuration, and... -
Page 35: Figure 6 Flowchart Showing The Various Menu Options
User’s Guide Figure 6 Flowchart showing the various menu options. -
Page 36: Temperature Set-Point
Controller Operation Press “SET” once more to reset the cutout. Reset cutout This will also switch 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 will continue to flash “cutout”. -
Page 37: Set-Point Value
User’s Guide 9.3.2 Set-point Value The set-point value may be adjusted after selecting the set-point memory and pressing “SET”. The set-point value is displayed with the units, C or F, at the left. 40.00 Set-point 4 value in °C If the set-point value need not be changed then press “EXIT” to resume dis- playing the bath temperature. -
Page 38: Temperature Scale Units
Controller Operation Temperature Scale Units The temperature scale units of the controller may be set by the user to degrees Celsius (°C) or Fahrenheit (°F). The units will be used in displaying the bath temperature, set-point, vernier, proportional band, and cutout set-point. The temperature scale units selection is accessed after the vernier adjustment function by pressing “SET”. -
Page 39: Heater Power
User’s Guide Heater Power The temperature controller controls the temperature of the bath by pulsing the heater on and off. The total power being applied to the heater is determined by the duty cycle or the ratio of heater on time to the pulse cycle time. This value may be estimated by watching the red/green control indicator light or read di- rectly from the digital display. -
Page 40: Figure 7 Bath Temperature Fluctuation At Various Proportional Band Settings
Controller Operation Figure 7 Bath temperature fluctuation at various proportional band settings. timum proportional band width are heater power setting and fluid viscosity. The proportional band should be wider when the higher power setting is used so that the change in output power per change in temperature remains the same. The proportional band should also be wider when the fluid viscosity is higher because of the increased response time. -
Page 41: Cutout
User’s Guide band width from this point to 3 or 4 times wider. Table 3 lists typical propor- tional band settings for optimum performance with a variety of fluids at se- lected temperatures. The proportional band adjustment may be accessed within the secondary menu. Press “SET”... -
Page 42: Controller Configuration
Controller Operation again. If the mode is set to manual, then the heater will remain disabled until the user manually resets the cutout. The cutout set-point may be accessed within the secondary menu. Press “SET” and “EXIT” to enter the secondary menu and show the heater power. Then press “SET”... -
Page 43: Operating Parameters
User’s Guide Press “SET” to enter the menu. The probe parameters menu contains the pa- rameters, DO and DG, which characterize the transfer function of the linearized thermistor control probe. These parameters may be adjusted to improve the ac- curacy of the bath. This procedure is explained in detail in Chapter 10. The probe parameters are accessed by pressing “SET”... -
Page 44: Serial Interface Parameters
Controller Operation 9.12 Serial Interface Parameters The serial RS-232 interface parameters menu is indicated by, Serial RS-232 interface parameters menu SErIAL The Serial interface parameters menu contains parameters which determine the operation of the serial interface. These controls only apply to baths fitted with the serial interface. -
Page 45: Duplex Mode
User’s Guide SA= 1 Current sample period (seconds) Adjust the value with “UP” or “DOWN” and then use “SET” to set the sample rate to the displayed value. New sample period SA= 60 9.12.3 Duplex Mode The next parameter is the duplex mode. The duplex mode may be set to full du- plex or half duplex. -
Page 46: Ieee-488 Parameters Menu
Controller Operation 9.13 IEEE-488 Parameters Menu Baths may optionally be fitted with an IEEE-488 GPIB interface. In this case the user may set the interface address within the IEEE-488 parameter menu. This menu does not appear on baths not fitted with the interface. The menu is indicated by, IEEE-488 parameters menu IEEE... -
Page 47: Cto
9.14.1 Parameter CTO sets the calibration of the over-temperature cutout. This is not adjustable by software but is adjusted with an internal potentiometer. For the 7009 bath this parameter should read between 110 and 130. 9.14.2 H and L These parameters set the upper and lower set-point limits of the bath. DO NOT change the values of these parameters from the factory set values. -
Page 48: Digital Communication Interface
Digital Communication Interface Digital Communication Interface If supplied with the option, the 7009 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 49: Baud Rate
The current baud rate value will then be displayed. The BAUD rate of the 7009 serial communications may be programmed to 300, 600, 1200, or 2400 baud. The baud rate is pre-programmed to 1200 baud. Use “UP” or “DOWN”... -
Page 50: Ieee-488 Communication (Optional)
Digital Communication Interface the serial interface to set the bath and view or program the various parameters. The interface commands are discussed in Section. All commands are ASCII character strings terminated with a carriage-return character (CR, ASCII 13). 10.2 IEEE-488 communication (optional) The IEEE-488 interface is available as an option. -
Page 51: Table 4 Interface Command Summary
User’s Guide Table 4 Interface Command Summary. Command Command Returned Acceptable Command Description Format Example Returned Example Values Display Temperature Read current set-point s[etpoint] set: 999.99 {C or F} set: 150.00 C Set current set-point to n s[etpoint]=n s=450 Instrument Range Read vernier v[ernier]... -
Page 52: Table 4 Interface Command Summary Continued
Digital Communication Interface Interface Command Summary continued. Command Command Returned Acceptable Command Description Format Example Returned Example Values Set cutout to be reset manually- cm[ode]=r[eset] cm=r Set cutout to be reset cm[ode]=a[uto] cm=a automatically Serial Interface Menu Read serial sample setting sa[mple] sa: 9 sa: 1... -
Page 53: Power Control Functions
1) switching the heater switch to LOW, and 2) switching the refrigeration switch to OFF. Otherwise, the interface would not be able to switch these functions off. The 7009 bath has four control functions with the digital interface. These are heater power high/low, cooling on/off, ex- pansion valve open/closed, and back pressure valve open/closed. -
Page 54: Table 5 Temperature Range Control Functions
Digital Communication Interface expansion valve is closed. This should be adjusted for approximately 56 psi. when the valve is closed. Table 6 Serial Power Control Functions Function Command Heater high Refrigeration Expansion valve open closed Back pressure open closed The “F4" command controls the back pressure valve. When the valve is closed the cooling capacity will be significantly reduced. -
Page 55: Bath Calibration
Bath Calibration Bath Calibration In some instances the user may want to calibrate the bath to improve the tem- perature set-point accuracy. Calibration is done by adjusting the controller probe calibration constants D0 and DG so that the temperature of the bath as measured with a standard thermometer agrees more closely with the bath set-point. -
Page 56: Calibration Example
User’s Guide 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 re- stored in the future. The new values D0′ and DG′ are computed by entering the old values for D0 and DG, the calibration temperature set-points t and t , and... -
Page 57: Figure 9 Sample Calibration Computations
Bath Calibration D0 = -25.229 DG = 0.0028530 = 25.00°C measured t = 24.869°C = 75.00°C measured t = 74.901°C Compute errors, = 24.869 - 25.00°C = -0.131°C = 74.901 - 75.00°C = -0.099°C Compute C − − − − − −... -
Page 58: Maintenance
Maintenance Maintenance The calibration instrument has been designed with the utmost care. Ease of op- eration 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 59: Draining The Bath
• If the mains supply cord becomes damaged, replace it with a cord with the appropriate gauge wire for the current of the bath. If there are any questions, call a Fluke Calibration Authorized Service Center for more in- formation. -
Page 60: Troubleshooting
L-shaped panel covering the display electronics. If they are blown, and continue to blow when replaced, the heaters may be shorted. If you suspect that the heaters are shorted or burned out, contact a Fluke Calibra- tion Authorized Service Center for assistance. - Page 61 User’s Guide Problem Causes and Solutions The controller display If the display flashes “CUT-OUT” alternately with the correct process tempera- flashes “CUT-OUT” and ture, check the following: the heater does not operate Wrong cut-out setting. The cut-out disconnects power to the heaters when the bath temperature exceeds the cut-out set-point.
- Page 62 Troubleshooting Problem Causes and Solutions The controller controls or If the controller appears to operate normally except that the bath’s temperature attempts to control at an does not agree with the temperature measured by the user’s reference ther- inaccurate temperature mometer to within the specified accuracy, consider the following: Erroneous parameters.
- Page 63 DO NOT replace the fuse with one of a higher current rating. Always replace the fuse with one of the same rating, voltage, and type. If the fuse blows a second time, it is likely caused by failure of a component part. Contact a Fluke Calibra- tion Authorized Service Center (Section 1.3) for assistance.