Fluke 726 FE 726 Users Manual - Page 40

Using Source Mode, Sourcing 4 to 20 mA, Simulating a 4- to 20-mA Transmitter

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726 Users Manual Using Source Mode In SOURCE mode, the Calibrator: • generates calibrated signals for testing and calibrating process instruments • supplies voltages, currents, frequencies, and resistances • simulates the electrical output of RTD and thermocouple temperature sensors • measures gas pressure from an external source, creating a calibrated pressure source. Sourcing 4 to 20 mA To select the current sourcing mode, proceed as follows: 1. Connect the test leads in the mA terminals (left column). M 2. If necessary, press for SOURCE mode. 3. Press V for current and enter the desired current by pressing X,W,Y, and Z. Simulating a 4- to 20-mA Transmitter Simulate is a special mode of operation in which the Calibrator is connected into a loop in place of a transmitter and supplies a known, settable test current. Proceed as follows: 1. Connect the 24 V loop power source as shown in Figure 14. M 2. If necessary, press for SOURCE mode. 3. Press V until both mA and SIM display. 4. Enter the desired current by pressing X,W,Y, and Z. 30

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726
Users Manual
30
Using Source Mode
In SOURCE mode, the Calibrator:
•
generates calibrated signals for testing and
calibrating process instruments
•
supplies voltages, currents, frequencies, and
resistances
•
simulates the electrical output of RTD and
thermocouple temperature sensors
•
measures gas pressure from an external source,
creating a calibrated pressure source.
Sourcing 4 to 20 mA
To select the current sourcing mode, proceed as follows:
1.
Connect the test leads in the mA terminals (left
column).
2.
If necessary, press
M
for SOURCE mode.
3.
Press
V
for current and enter the desired current
by pressing
X
,
W
,
Y
, and
Z
.
Simulating a 4- to 20-mA Transmitter
Simulate is a special mode of operation in which the
Calibrator is connected into a loop in place of a
transmitter and supplies a known, settable test current.
Proceed as follows:
1.
Connect the 24 V loop power source as shown in
Figure 14.
2.
If necessary, press
M
for SOURCE mode.
3.
Press
V
until both mA and SIM display.
4.
Enter the desired current by pressing
X
,
W
,
Y
, and
Z
.