EUTECH INSTRUMENTS ALPHA PH 500 PHORP 2-WIRE TRANSMITTER (REVISION 1), Instruction Manual, Page: 5 / 28

2
Preparation
Remove screws from the four corners at the back of the Transmitter, and remove
back cover.
Connectors should be exposed as follows:
All wiring is done on the detachable 9-pin connector. Using a suitable screwdriver,
loosen screws from top of connector.
When inserting the wires, always hold connector with top screws facing up.
1.1 Power Supply Requirements
This transmitter requires a 12 to 24V DC power supply. Other Transmitters and/or a
chart recorder may be connected in series.
Insert positive loop wire from power supply to pin 1, tighten screw.
Insert negative loop wire to pin 2, tighten screw. This wire may be linked to the
positive terminal of next transmitter (pin 1) / Chart recorder or to negative terminal
of power supply
.