Technical Bulletin - New CPC Humidity Sensor Installation Instructions
Part #: 026-4800 Revision 0 Date: 09/13/2000
COMPUTER PROCESS CONTROLS - http://www.cpcus.com/
Page 2
RH Sensor Jumper Settings
On the back side of the RH sensor’s front cover plate, there are two three-pin jumpers on the cir-
cuit board. These jumpers determine whether the sensor’s output signal will be voltage or current
(V - I) and 5VDC or 10VDC (5 - 10). Set both jumpers in the UP position (as shown in diagram)
so that the V-I jumper is set to “V” and the 5-10 jumper is set to “5.”
Input Board Dip Switch Settings
On the 16AI board, locate the input type dip switch that corresponds to the point the RH sensor is
connected to, and set this switch to the DOWN position.
Replacing the RH Sensor Front Cover
After wiring and setting the jumpers on the RH sensor, replace the sensor’s front cover, making
sure the five pins on the front cover’s circuit board plug in to the receptacle on the mounting plate.
If installed correctly, the front cover should snap into place.
Figure 1 - RH Sensor Wiring and Installation
O
B
S
O
L
E
T
E
