CPC 203-5761 Installation Instructions

TECHNICAL BULLETIN
Part #: 026-4808 Revision 0 Date: 02/26/2003
Outdoor Humidity Sensor (P/N 203-5761)
CPC specs a outdoor relative humidity (RH) sensor with a 0-5VDC output for use in building
control and anti-sweat control applications using CPC input boards.

Specifications

Sensing Element Digitally profiled thin-film capacitive
Accuracy ±2% RH over the range 20%-90% RH
Stability ±1%@ 20°C (68°F) annually for 2 years
Operating 0-100% RH
Humidity Range

Choosing a Mounting Location

The outdoor RH sensor should always be mounted on the north side of the building if in the
Northern Hemisphere, or on the south side if in the Southern Hemisphere. The sensor should be
mounted under an overhang or otherwise out of direct sunlight (if possible).
Mounting
1. Secure the rear side of the enclosure to the outside wall
using the two mounting brackets, as shown in Figure 1.
The tube holding the sensor element should point straight
down.
2. If you will be running the sensor cable through the wall
behind the sensor, cut or drill a hole in the wall through
the hole in the enclosure.
COMPUTER PROCESS CONTROLS - http://www.cpcus.com/

Installation Instructions

Temperature ±0.03% RH /°C over 0-60°C (32-140°F)
Coefficient
Analog Output 0-5VDC; 3-wire, observe polarity
Scaling 0-100% RH
Input Power 12VDC
Figure 1 - Humidity Sensor - Exploded View
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