4.1. Sensor connection
The CAD HE can work in proportional mode controlled by a sensor 0-10V (see electrical scheme).
The output control voltage for the sensor is adjusted between 2V and 8V. The 2V output signal corres-
pond with the output signal to the fans of 4V and the 8V output signal correspond with the 10V output
signal to the fans. The chart below show the working range of the recommended S&P sensors.
CO2 sensors: SCO2-AD 0/10V; SCO2-G 0/10V
Relative humidity sensors (r.H.): SHT-A 0-10V; SHT-G 0/10V
CO 2 [ppm]
2000
1600
1200
800
400
0
sensor [V]
r.H.[%]
100
10
80
8
60
6
40
4
20
2
0
0
2
control range
4
6
8
fan [V]
10
29
