ROTRONIC CF3-D - Manual

Dokument
IMA 204 Rev
2 Page
1 (7)
Installation manual
CF3-D, CF3-D-Disp
Figure 1 The sensor
General
The IAQ-sensor product CF3-D (for mounting in ventilation ducts) is designed to
measure carbon dioxide (CO
2
). Option - TR is prepared for temperature
measurements by the resistive temperature probe mounted by the user. Option -Disp
displays the measured CO
2
value in ppm (parts-per-million) on the LCD.
The units are designed for connecting to Direct Digital Control (DDC) with 0-10V or
2-10V signal inputs. The two parallel signal outputs Out(1) (0-10V) and Out(2) (2-10V
or 4-20 mA) give linear signal voltages or currents corresponding to the measuring
range.
The output OUT(2) also indicates the status by setting the output voltage to 1V or the
output current to 2 mA when the sensor self-diagnostics detects any error.