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Калибратор Процессов
725 ex
Руководство по калибровке Страница: 8

Fluke 725 ex Руководство по калибровке онлайн [8/54] 4972

725Ex

Calibration Manual

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

Fluke 725 ex Руководство по калибровке онлайн [8/54] 4972

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