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Fluke 787 [24/50] Using the current output functions
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787
Users Manual
20
Using the Current Output Functions
The meter provides steady, stepped, and ramped current
output for testing 0-20 mA and 4-20 mA current loops.
You can choose source mode, in which the meter
supplies the current, or simulate mode, in which the
meter regulates current in an externally-powered current
loop.
Source Mode
Source mode is selected automatically by inserting the
test leads into the SOURCE + and − jacks as shown in
Figure 7. Use source mode whenever you need to supply
current into a passive circuit such as a current loop with
no loop supply. Source mode depletes the battery faster
than simulate mode, so use simulate mode whenever
possible.
The display looks the same in source and simulate
modes. The way to tell which mode is in use is to see
which pair of output jacks is in use.
Содержание
- April 1997 rev 12 01 1
- Processmeter 1
- Processmeter users manual 1
- Users manual 1
- Limited warranty limitation of liability 2
- Table of contents 3
- Title page 3
- Contacting fluke 5
- Introduction 5
- Processmeter 5
- Warning 5
- Safety information 6
- Warning 6
- Cat iii 8
- How to get started 9
- Getting acquainted with the meter 10
- Figure 3 rotary switch positions for measurements 12
- Users manual 12
- Figure 4 rotary switch positions for ma output 14
- Users manual 14
- Figure 6 elements of the display 18
- Users manual 18
- Input impedance 21
- Measuring a composite signal 21
- Measuring electrical parameters 21
- Ranges 21
- Displaying minimum maximum and average 22
- Testing diodes 22
- Compensating for test lead resistance 23
- Using touchhold 23
- Warning 23
- Source mode 24
- Using the current output functions 24
- Ee010f eps 25
- Figure 7 sourcing current 25
- Processmeter using the current output functions 25
- Changing the current span 26
- Simulate mode 26
- Com 24v 27
- Dc v power supply 27
- Figure 8 simulating a transmitter 27
- Processmeter using the current output functions 27
- Producing a steady ma output 28
- Manually stepping the ma output 29
- Auto ramping the ma output 30
- Power up options 31
- Battery life 32
- Calibration 32
- General maintenance 32
- Maintenance 32
- Using the holster and flex stand 32
- Warning 32
- Figure 9 using the holster and flex stand 33
- Processmeter maintenance 33
- Replacing the battery 34
- Warning 34
- Replacing a fuse 35
- Warning 35
- If the meter does not work 36
- Replacement parts and accessories 37
- Warning 37
- Figure 12 replacement parts 39
- Processmeter replacement parts and accessories 39
- Dc volts measurement 40
- Specifications 40
- Ac volts measurement 41
- Dc millivolts measurement 41
- Ac current measurement 42
- Dc current measurement 42
- Ohms measurement 43
- Frequency counter accuracy 44
- Frequency counter sensitivity 44
- Dc current output 45
- Diode test and continuity test 45
- General specifications 45
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