Martel Electronics DMC1400 - Manual (Page 30)

28
6.2 Calibrating an I/P Device
The following steps show how to calibrate a device that controls
pressure:
1. Select upper display from the Main Menu, and select pressure
from the primary parameters.
2. Switch to lower display from the Main Menu, and select current
source [mA out] from the primary parameters.
3. Connect the calibrator to the device as shown in Figure 20. The
calibrator will simulate the transmitter current and measure the
output pressure.
4. Enter a current using the keypad.
Figure 20. Calibrating an I/P Device
6.3 Calibrating a Transmitter
To calibrate a transmitter both the upper and the lower displays will
be used; one for measuring and the second a source. This section
covers all but the pressure transmitters. A thermocouple temperature
transmitter is used in this example.
The following steps show how to calibrate a temperature transmitter:
1. From the Main Menu select upper display, and choose current
loop [mA LOOP].
2. Switch to lower display from the Main Menu, and select [TC]
from the primary parameters. Choose output [OUT] from the
input/output control, and select TC type.
3. Set the 0 % and 100 % span points using the keypad and the
0% and 100% keys (refer to Setting 0 % and 100 % Parameters
section).