![Fluke 725 ex [30/54] Press f on the uut until ω appears on the lower display if necessary use m to get to the measure mode and use x to get to the 4w mode measure should also appear on the lower display](/img/pdf.png)
Fluke 725 ex [30/54] Press f on the uut until ω appears on the lower display if necessary use m to get to the measure mode and use x to get to the 4w mode measure should also appear on the lower display
![Fluke 725 ex [30/54] Press f on the uut until ω appears on the lower display if necessary use m to get to the measure mode and use x to get to the 4w mode measure should also appear on the lower display](/views2/1436103/page30/bg1e.png)
725Ex
Calibration Manual
20
Lower Display 4-Wire Resistance Measurement Tests
1. Press F on the UUT until Ω appears on the lower display. If necessary, use M to
get to the measure mode, and use X to get to the 4W mode. (MEASURE should
also appear on the lower display).
2. Set the 5520A to 2-wire output with 2-wire compensation off.
3. Make the connections shown in Figure 8.
4. Set the 5520A to source the resistance values in Table 10 and verify that the UUT
resistance readings are within the limits shown.
5. Press STBY on the 5520A.
aal09f.eps
Figure 8. Lower Display 4-Wire Resistance Test Connections
Table 10. Lower Display 4-Wire Resistance Readings
5520A Outputs UUT Readings
15.00 Ω 14.90 Ω to 15.10 Ω
300.00 Ω 299.90 Ω to 300.10 Ω
1500.0 Ω 1499.5 Ω to 1500.5 Ω
3000.0 Ω 2999.0 Ω to 3001.0 Ω
Содержание
- Calibration manual 1
- Ex calibration manual 1
- Multifunction process calibrator 1
- Limited warranty and limitation of liability 2
- Warranty 2
- Table of contents 3
- List of tables 5
- List of figures 7
- Introduction 9
- In this calibration manual a warning identifies conditions and actions that pose hazard s to the user a caution identifies conditions and actions that may damage the calibrator or the test instruments 10
- Read first safety information 10
- W warning 10
- Symbols 11
- Symbols used on the calibrator and in this manual are explained in table 1 11
- W caution 11
- Ex hazardous areas 12
- All specifications apply from 18 c to 28 c unless stated otherwise all specifications assume a five minute warmup period 13
- Dc ma measurement and source 13
- Dc voltage measurement 13
- Dc voltage source 13
- Millivolt measurement and source 13
- Multifunction process calibrator specifications 13
- Specifications 13
- Frequency measurement 14
- Frequency source 14
- Ohms measurement 14
- Ohms source 14
- Allowable excitation by rtd type 15
- Entity parameters 15
- For entity parameters refer to fluke 725ex ccd for use in ex hazardous areas 15
- Loop power supply 15
- Maximum current 24 ma 15
- Multifunction process calibrator specifications 15
- Ni 120 0 5 to 3 ma 15
- Pt 100 385 0 5 to 3 ma 15
- Pt 100 3916 0 5 to 3 ma 15
- Pt 100 3926 0 5 to 3 ma 15
- Pt 1000 385 0 5 to 0 0 ma 15
- Pt 200 385 0 5 to 0 0 ma 15
- Pt 500 385 0 5 to 0 0 ma 15
- Rtd excitation simulation 15
- Short circuit protected 15
- Temperature thermocouples 15
- Type range measure and source accuracies 15
- Voltage 12 v 15
- General specifications 16
- Manufactured by martel electronics inc 1f commons drive londonderry nh usa 16
- Pressure measurement 16
- Temperature rtd ranges and accuracies 16
- A message from 17
- Fluke corporation 17
- Static awareness 17
- Approved batteries 19
- Basic maintenance 19
- Cleaning the calibrator 19
- Replacing the batteries 19
- Equipment and software required to perform the procedures in this manual are identified in table 3 if the recommended equipment model is not available other equipment can be substituted if it meets the specifications indicated 21
- Multifunction process calibrator required equipment 21
- Required equipment 21
- To avoid safety hazards and equipment damage during the calibration procedures use the specified calibration equipment listed in table 3 using unspecified equipment can give unreliable results and pose safety hazards 21
- Warning 21
- Performance tests 22
- Preparing for the performance tests 22
- Upper display voltage measurement tests 23
- Lower display mv measurement tests 24
- Lower display voltage measurement tests 25
- Upper display ma measurement tests 26
- Lower display ma measurement tests 27
- Lower display frequency measurement test 28
- Lower display frequency source test 29
- Lower display 4 wire resistance measurement tests 30
- Make the connections shown in figure 8 30
- Press f on the uut until ω appears on the lower display if necessary use m to get to the measure mode and use x to get to the 4w mode measure should also appear on the lower display 30
- Press stby on the 5520a 30
- Set the 5520a to 2 wire output with 2 wire compensation off 30
- Set the 5520a to source the resistance values in table 10 and verify that the uut resistance readings are within the limits shown 30
- Lower display 4 wire rtd measurement 31
- Lower display 3 wire rtd measurement 32
- Lower display thermocouple measurement tests 33
- Lower display thermocouple source tests 34
- Lower display ma source tests 35
- Lower display mv source tests 36
- Lower display voltage source tests 36
- Lower display ohms source tests 37
- Make the connections shown in figure 12 37
- Multifunction process calibrator performance tests 37
- Press f on the uut until ω appears on the lower display if necessary press m until source appears on the lower display 37
- Set the hp 3458a to measure 4 wire resistance 37
- Use the arrow keys on the uut to set the uut output to the resistance values in table 17 and verify that the hp 3458a readings are within the limits shown 37
- Calibration adjustment procedures 38
- Pressure module input 38
- Initiating communication 39
- Cal volts input 40
- Cal volts output 41
- Cal ma input 42
- Cal ma output 43
- Cal mv input 44
- Cal mv output 45
- Cal thermocouples 46
- Calibration manual 46
- Connect the uut as shown in figure 19 46
- Figure 19 thermocouples calibration connections 46
- From the calibration menu enter the cal step for cal thermocouples the pc displays 46
- Press the space bar to return to the calibration menu 46
- Set the fluke 5520a to output 0 0 degrees c for a type j thermocouple using the its 90 standard then press the space bar on the pc after a short while the pc displays the following calibration constant and new prompt 46
- Cal ohms hi source 47
- Cal ohms low source 48
- Cal rtd low range 49
- Cal rtd hi range 50
- Cal iso volts 51
- Cal iso ma 52
- Multifunction process calibrator replaceable parts 53
- Replaceable parts 53
- When servicing this calibrator use only the replacement parts specified user replaceable parts are listed in table 18 53
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