Fluke 725 Manual do Utilizador descarregar pdf (Página 49)

Calibrating a Transmitter

Use the measurement (upper display) and source (lower

display) modes to calibrate a transmitter. This section

applies to all but pressure transmitters. The following

example shows how to calibrate a temperature

transmitter.

Connect the calibrator to the instrument under test as

shown in Figure 19. Proceed as follows to calibrate a

transmitter

1. Press

l for current (upper display). If required,

press

l again to activate loop power.

2. Press

T (lower display). If desired, continue

pressing this key to select the desired thermocouple

type.

3. If necessary, press

M for SOURCE mode.

4. Set your zero and span parameters by pressing

and W keys. Enter these parameters by pressing and

holding

J and G. For more information on

setting parameters, see “Setting 0 % and 100 %”

earlier in this manual.

5. Perform test checks at 0-25-50-75-100 % points by

pressing

H or I. Adjust the transmitter as

necessary.

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Fluke 725 Manual do Utilizador Página 49