Rockwell Automation 1414-CPZxxxxx_IPZxxxxx Differential Liquid/Gas Pressure Transmitter - Manual (Page 3)

Differential Liquid/Gas Pressure Transmitter 3
Publication 1414-IN014A-EN-P - October 2005
Install the Differential Liquid/Gas Pressure Transmitter
The transmitter mounts on a vertical surface with the pressure ports and cable
entrance on the bottom using the two screw holes on the base of the unit. Ensure
there is enough space around the unit to make the pressure and electrical
connections. Avoid locations with severe vibrations or excessive moisture. The
enclosure has a standard ½” conduit opening and may be installed with either a
conduit coupler or a cable gland type fitting. In this position the High port is on the
left and the Low port is on the right as shown on the printed circuit board.
Wire and Connect the Differential Liquid/Gas Pressure Transmitter
Use twisted-pair 18 to 22 AWG shielded wiring for all connections and do not locate
the device wires in the same conduit with wiring used to supply inductive loads
such as motors. Disconnect the power supply before making any connections to
prevent electrical shock or equipment damage. Make all connections in accordance
with national and local electrical codes.
This device is a 3-wire sourcing type transmitter. Connect the positive dc voltage or
the hot side of the ac voltage to the terminal marked PWR. The power supply
common is connected to the terminal marked COM. The device is reverse voltage
protected and will not operate if connected backwards. The analog output signal is
available on the OUT terminal. This signal is jumper selectable for either voltage or
4 to 20 mA output (factory default). In voltage mode, either 0 to 5 or 0 to 10V dc
can also be selected. These options are indicated on the circuit board.
The remote zero feature may be used by wiring a dry-contact (relay only) digital
output to the ZERO terminals. Do not apply voltage to the ZERO terminals.
Plumbing
The two pressure ports are labeled High and Low. The output signal indicates a
positive value when the pressure is higher on the High port than the Low port so
ensure these ports are connected correctly. Use an appropriately rated pressure
tubing and arrange it to minimize stress on the connections.
Do not allow material to fall into the pressure ports as contamination could damage
the sensors.
Configure the Differential Liquid/Gas Pressure Transmitter
As shown on the printed circuit board diagram, push-on jumpers and switches are
used to select the output signal type, the input pressure range and several features.
The device is factory configured to operate in the 4-20 mA output mode but can be
changed to voltage mode by moving the two jumpers from the positions marked