EN0B-0295GE51 R0101
C7110A
RO
OM AIR QUALITY SENSOR
SPECIFICATION DATA & INSTALLATION INSTRUCTIONS
GENERAL
The C7110A Room Air Quality Sensor is suitable for
measuring air quality in rooms, offices, and production bays.
This mixed gas sensor can be used to control ventilation
plants. It detects unpleasant odors, tobacco smoke, and
vapors emitted by such materials as furniture, carpets, paint,
glue, etc. As proven in practice, this device detects those
substances typically present in air having a poor quality,
some of which may otherwise go undetected by room
occupants, themselves. This sensor has proven itself in
numerous applications over many years.
Models
Order Number
Description
Output
C7110A1005
Room Air Quality Sensor
0...10Vdc
FEATURES
•
Measurement of a variety of air quality factors
•
Output signal: 0...10 Vdc
•
Adjustable output offset
•
Easy installation and wiring connection
SPECIFICATION
Supply voltage
15...24 Vdc / 24 Vac
Power consumption
< 1 W
Output signal
0...10 Vdc (increases as air
quality
worsens)
Weight /Dimensions
approx. 125 g / see page 3
Electrical connection
Screw terminal block for
conductors up to 1.5 mm²
Air Quality Sensor
Sensitivity/Linearity
see Fig. 1 on page 2
Dynamic behavior
see Fig. 6 on page 4
Ambient Limits
Transport and
−
10...
+
70
°
C (+14...+158
°
F
)
storage temperature
Humidity
5...95%rh, non-condensing
Safety
Protection class
II as per EN60730-1
Protection standard
IP30 as per EN60529
Flame retardant
V0 as per UL94
Plastic ABS
FUNCTION
The electrical conductivity of a heated tin-dioxide semi-
conductor sensor varies in proportion to the number of mole-
cules of the reducing agents. This leads to a voltage at the
measuring element which is amplified to an output voltage of
0V to 10Vdc.
The following particles and gases can be detected: cigarette
smoke, hydrogen, carbon monoxide, ethanol, ammonia, etc.
In contrast to CO
2
sensors, which selectively measure the
concentration of only one type of gas, a mixed gas sensor is a
broadband detector, i.e. the sensor signal does not indicate
the type of gas or its concentration in ppm (parts per million).
The complex and constantly changing composition of room
air makes it necessary to perform broadband air quality
measurement.