Using Source Mode; Sourcing 4 To 20 Ma; Simulating A 4- To 20-Ma Transmitter - Fluke 726 User Manual

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
V
3. Press for current and enter the desired current
Y
by pressing X,W,
, and
30
for SOURCE mode.
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
V
3. Press until both mA and SIM display.
Enter the desired current by pressing X,W,
4.
Z
.
for SOURCE mode.
Y
, and