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3-2
IM CA700-01EN
3.1 Connecting to a Pressure Transmitter or Pressure Switch
mA
V
H
L
H L
L
H
Pressure transmitter
Pressure pump
(91051/91056)
CA700
Loop voltage
Input terminal
External pressure
sensor
*
*: When use the external pressure sensor
Connecting a Pressure Switch to the CA700
Connect the pressure pump output to the pressure switch input and the CA700 input through
branching.
To use the external pressure sensor, connect the pressure pump output to the pressure switch input
and the external pressure sensor input through branching, and connect the sensor output to the
external pressure sensor connection terminal of the CA700.
Some pressure pumps have two output ports: one for applying pressure and another for the pressure
meter.
Connect the contact terminal of the pressure switch to the signal terminal of the CA700.
mA
V
H
L
H L
L
H
Pressure pump
(91051/91056)
CA700
Loop voltage
Input terminal
External pressure
sensor
*
*: When use the external pressure sensor
Pressure switch
The CA700 can calibrate mechanical pressure switches. It cannot be used to calibrate open-collector
contact, voltage output, or current output pressure switches.