Emerson 203-5751 specifications Wall-MountedRH Sensor and RH/Temperature Sensor, Overview

Wall-Mounted RH Sensor and RH/Temperature Sensor

Product Information Sheet 203-5751

Overview

CPC specs a wall-mounted relative humidity (RH) sensor (P/N 203-5751) and/or RH and temperature sensor (P/N 203-5752) for use in building control and anti-sweat control applications using CPC input boards.

Specifications

General

Input Power	12VDC
Enclosure	High-impact plastic, white
Relative Humidity (RH)
Sensing	Digitally profiled thin-film
Element	capacitive
RH Accuracy	±3% RH over the range 20%-90%
	RH
Stability	<0.5% RH per year
Operating	0-100% RH
Humidity Range
Analog Output	0-5VDC; 3-wire, observe
	polarity
Scaling	0-100% RH
Temperature
Temperature	±0.4°F from 32°F to 140°F
Accuracy
Analog Out	Resistive, 2-wire, no polarity

Choosing a Mounting Location

Mount the sensor indoors in a central location within the zone to be measured, away from doors, windows, vents, heaters, and outside walls that could affect temperature readings. The sensor should be at least four feet from the floor, and no higher than necessary to prevent tampering.

Mounting

1.Insert a screwdriver into the gap in the plastic on the bottom side of the sensor enclosure, and pry the front part of the enclosure away from the rear mounting plate. Pull the front away from the mounting plate until the top separates from the mounting plate.

2.Remove the punch outs above the wiring connectors so that the sensor cables can be run into the sensor enclosure (see Figure 1).

3.Use the pre-made holes to mount the plate on a junction box using the screws provided, or mount it against a wall or riser. Do not mount the plate upside down or sideways. The plate should be mounted with the terminal blocks toward the bottom.

4.If necessary, drill or cut a hole in the wall to allow the sensor cable to be run through the wall into the sensor’s terminal block.

Figure 1 - RH/Temp Sensor Back Plate

29