Fluke 726 FE 726 Users Manual - Page 28

Using Measure Mode, Measuring Electrical Parameters (Upper Display)

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726 Users Manual Using Measure Mode Measuring Electrical Parameters (Upper Display) To measure the current or voltage output of a transmitter, or to measure the output of a 700 Series pressure module, use the upper display and proceed as follows: 1. Press l to select volts or current. LOOP should not be on. 2. Connect the leads as shown in Figure 7. Current Measurement with Loop Power The loop power function activates a 24 V supply in series with the current measuring circuit, allowing you to test a transmitter when it is disconnected from plant wiring. To measure current with loop power: 1. Connect the Calibrator to the transmitter current loop terminals as shown in Figure 8. 2. Press l while the Calibrator is in current measurement mode. LOOP appears and an internal 24 V loop supply turns on. Note When HART resistor mode is selected, the 250 Ω resistor is turned on both mA channels. 18 bec42f.eps Figure 7. Measuring Voltage and Current Output

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726
Users Manual
18
Using Measure Mode
Measuring Electrical Parameters (Upper Display)
To measure the current or voltage output of a transmitter,
or to measure the output of a 700 Series pressure
module, use the upper display and proceed as follows:
1.
Press
l
to select volts or current. LOOP should
not be on.
2.
Connect the leads as shown in Figure 7.
Current Measurement with Loop Power
The loop power function activates a 24 V supply in series
with the current measuring circuit, allowing you to test a
transmitter when it is disconnected from plant wiring. To
measure current with loop power:
1.
Connect the Calibrator to the transmitter current loop
terminals as shown in Figure 8.
2.
Press
l
while the Calibrator is in current
measurement mode. LOOP appears and an internal
24 V loop supply turns on.
Note
When HART resistor mode is selected, the
250
Ω
resistor is turned on both mA channels.
bec42f.eps
Figure 7. Measuring Voltage and Current Output