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Fluke 726 [34/80] Using resistance temperature detectors rtds
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726
Users Manual
24
Using Resistance-Temperature Detectors (RTDs)
The Calibrator accepts RTD types shown in Table 6.
RTDs are characterized by their resistance at 0 °C
(32 °F), which is called the “ice point” or R
0
. The most
common R
0
is 100 Ω. The Calibrator accepts RTD
measurement inputs in two-, three-, or four-wire
connections, with the three-wire connection the most
common. A four-wire configuration provides the highest
measurement precision, and two-wire provides the lowest
measurement precision.
To measure temperature using an RTD input:
1. If necessary, press
M for MEASURE mode.
2. Press
R for the RTD display. Continue pressing
this key to select the desired RTD type.
3. Press
X or W to select a 2-, 3-, or 4- wire
connection.
4. Attach the RTD to input terminals as shown in
Figure 11.
PRT Custom Curves
Up to three custom curves can be named and CVD
coefficients can be entered through the serial port. Names
can be up to six characters. For more information, see
the Application Note on the 725/726 CD.
Содержание
- Multifunction process calibrator users manual 1
- Limited warranty and limitation of liability 2
- Table of contents 3
- Title page 3
- Contents 5
- List of tables 7
- Table title page 7
- Figure title page 9
- List of figures 9
- Contacting fluke 11
- Introduction 11
- Multifunction process calibrator 11
- Safety information 13
- Standard equipment 13
- Xw warning 13
- Xw warning 14
- W caution 15
- Ac72 alligator clips 16
- Bec01f eps 16
- Figure 1 standard equipment 16
- Stackable test leads 16
- Tl75 test lead set 16
- Users manual 16
- Symbols 17
- Figure 2 input output terminals and connectors 18
- Figure 2 shows the calibrator input and output terminals table 3 explains their use 18
- Getting acquainted with the calibrator 18
- Input and output terminals 18
- Users manual 18
- Bec41f eps 20
- Figure 3 keys 20
- Figure 3 shows the calibrator keys and table 4 explains their use 20
- Users manual 20
- Display 23
- Figure 4 elements of a typical display 23
- Figure 4 shows the elements of a typical display 23
- Multifunction process calibrator getting acquainted with the calibrator 23
- Configuration menus 24
- Contrast adjustment 24
- Celcius and fahrenheit c and f 25
- Frequency pulse output voltage 25
- Pulse output frequency 25
- Shut down mode 25
- Getting started 26
- Hart resistor on off 26
- Resistor on off 26
- Voltage to voltage test 26
- Bec39f eps 27
- Config selection 27
- Figure 6 voltage to voltage test 27
- Multifunction process calibrator getting started 27
- Precision calibrator 27
- Save recall 27
- Current measurement with loop power 28
- Measuring electrical parameters upper display 28
- Using measure mode 28
- Figure 8 connections for supplying loop power 29
- Hart communicator 29
- Meas source 29
- Multifunction process calibrator using measure mode 29
- Precision calibrator 29
- Save recall 29
- Measuring electrical parameters lower display 30
- Measuring temperature 31
- Using thermocouples 31
- W caution 31
- Figure 10 measuring temperature with a thermocouple 33
- Multifunction process calibrator using measure mode 33
- Process temperature 33
- Tc miniplug 33
- Warning 30 v maximum to 33
- Prt custom curves 34
- Using resistance temperature detectors rtds 34
- Figure 11 measuring temperature with an rtd measuring 2 3 and 4 wire resistance 36
- Users manual 36
- Measuring pressure 37
- W caution 37
- W warning 37
- A for 3 second 38
- Zeroing with absolute pressure modules 38
- Differential module 39
- Figure 13 connections for measuring pressure 39
- Gage module 39
- Isolation valve 39
- Multifunction process calibrator using measure mode 39
- Simulating a 4 to 20 ma transmitter 40
- Sourcing 4 to 20 ma 40
- Using source mode 40
- Figure 14 connections for simulating a 4 to 20 ma transmitter 41
- Loop power supply 41
- Multifunction process calibrator using source mode 41
- Readout or controller 41
- Sourcing other electrical parameters 42
- Figure 15 electrical sourcing connections 43
- Measure source measure 43
- Multifunction process calibrator using source mode 43
- Simulating thermocouples 44
- W caution 44
- Color depends on type of tc 45
- Figure 16 connections for simulating a thermocouple 45
- Multifunction process calibrator using source mode 45
- Precision calibrator 45
- Tc miniplug 45
- Simulating rtds 46
- Config selection 47
- Figure 17 connections for simulating 3 and 4 wire rtd 47
- Multifunction process calibrator using source mode 47
- Precision calibrator 47
- Save recall 47
- Sensor terminals 47
- Source 47
- V ma loop switch test 47
- Sourcing pressure 48
- W caution 48
- W warning 48
- Figure 18 connections for sourcing pressure 50
- Hand pump 50
- Measure ma source pressure 24 v loop power enabled 50
- Pressure module 50
- To unit under test 50
- Users manual 50
- Error functionality 51
- Setting 0 and 100 output parameters 51
- Stepping and ramping the output 51
- Auto ramping the output 52
- L is presse 52
- Manually stepping the ma output 52
- Store a setup 52
- Storing and recalling setups 52
- Recall a setup 53
- Storing and recalling data 53
- Storing data 53
- Pulse train source read 54
- Recall data 54
- Calibrating a transmitter 55
- Figure 20 calibrating a thermocouple transmitter 56
- Hart communicator 56
- Meas source 56
- Precision calibrator 56
- Save recall 56
- Users manual 56
- Calibrating a pressure transmitter 57
- Figure 21 calibrating a pressure to current p i transmitter 58
- Hand pump 58
- Meas source 58
- Precision calibrator 58
- Pressure module 58
- Save recall 58
- Users manual 58
- Calibrating an i p device 59
- Figure 22 calibrating a current to pressure i p transmitter 60
- Hart communicator 60
- Measure pressure source ma 60
- Precision calibrator 60
- Pressure module 60
- Users manual 60
- Pressure switch test 61
- Testing an output device 61
- Functionality 62
- Hart functionality 62
- Remote control commands 62
- Maintenance 63
- Replacing the batteries 63
- Warning 63
- Cleaning the calibrator 64
- Replacement parts 64
- Service center calibration or repair 64
- W caution 64
- Figure 25 replacement parts 65
- Maintenance 65
- Multifunction process calibrator 65
- Accessories 66
- External fluke pressure module compatibility 66
- Dc ma measurement and source 69
- Dc voltage measurement and source 69
- Multifunction process calibrator 69
- Specifications 69
- Frequency measurement 70
- Ohms measurement 70
- Ohms source 70
- Users manual 70
- Frequency source 71
- Multifunction process calibrator 71
- Specifications 71
- Temperature thermocouples 71
- Users manual 72
- Multifunction process calibrator 73
- Rtd accuracy read and source its 90 73
- Specifications 73
- Loop power supply 74
- Pressure measurement 74
- Pulse read and pulse source 74
- Users manual 74
- Voltage 24 v maximum current 22 ma short circuit protected 74
- General specifications 75
- Multifunction process calibrator 75
- Specifications 75
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