Honeywell C7110A1010 SPECIFICATION DATA & INSTALLATION INSTRUCTIONS

GENERAL

The C7110A1010 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.

NOTE: The mixed gas sensor does not measure or indicate

the concentration of individual gases, and thus
cannot be used for the monitoring or control of
specific substances.

Models

order no. description output signal

C7110A1010 Room Air Quality Sensor 0...10 Vdc

C7110A1010

ROOM AIR QUALITY SENSOR

SPECIFICATION DATA & INSTALLATION INSTRUCTIONS

FEATURES

 Measurement of a variety of air quality factors
 Output signal: 0...10 Vdc, indicated by yellow status

LED on front cover

 Trimming potentiometer to adjust output signal
 Easy installation and wiring connection

SPECIFICATION

Supply voltage 15...30 Vdc / 24 Vac (+/-20%)
Power consumption < 1 W
Output signal 0...10 Vdc (increases as air

quality worsens); adjustable via

trimming potentiometer
Min. impedance of load 5 kOhm (at output)
Weight /Dimensions approx. 125 g / see page 3
Electrical connection Screw terminal block for

Air Quality Sensor

Sensitivity/Linearity see Fig. 1 on page 2
Dynamic behavior see Fig. 6 on page 4

Ambient Limits

Transport/storage temp. -30...60 C (-22...+140 F
Operating temperature 0...+50 °C (+32...+122 °F)
Humidity 5...95%rh, non-condensing

Safety

Protection class III as per EN60730-1
Protection standard IP30 as per EN60529
Flame retardant Plastic ABS, V0 as per UL94
EMC environments residential, commercial, light

conductors up to 1.5 mm²

)

industrial, and industrial

® U.S. Registered Trademark EN0B-0644GE51 R1109A

Copyright © 2009 Honeywell Inc. • All rights reserved

C7110A1010 ROOM AIR QUALITY SENSOR

FUNCTION

The device contains a heated tin dioxide semiconductor
sensor, the electrical conductivity of which varies in proportion
to the concentration of reducing agents in the ambient air.
This leads to a voltage at the measuring element which is
amplified to an output voltage of 0 to 10 Vdc.

The following particles and gases can be detected: cigarette
smoke, hydrogen, carbon monoxide, ethanol, ammonia, etc.

In contrast to CO
concentration of only one type of gas, the C7110A1010 is a
mixed gas sensor and as such functions as 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 using such a broadband detector.

INCREASING OUTPUT VOLTAGE

Fig. 1. Output voltage as a function of gas concentration

2 sensors, which selectively measure the

INCREASING GAS CONCENTRATION

HYDROGEN
ETHANOL
ISOBUTANE

CO

METHANE

Positioning

To avoid falsifying the measuring results, the device should
be installed at sites at which typical air quality prevails.

Direct exposure to sunlight and drafts should be avoided.
If the device is mounted on a standard flush box, the end of

the installation tube in the flush box must be sealed so to
avoid any draft in the tube falsifying the measuring result.

Maintain a mounting clearance of approx. 4 in. (10 cm) to the
right-hand side of the module in order to allow free airflow to
the air quality sensor.

Mounting

1. The cover of the air quality sensor is fixed by a tab on
the underside of the unit; to disassemble the cover
and the sub-base, see Fig. 2. To access all of the
mounting holes, pull off the perforated cover, bend
down slightly the tab to release the printed circuit
board, and leverage the printed circuit board out (see
Fig. 3).

LIFT

2

INSTALLATION

Wiring

All wiring must comply with local electrical codes and
ordinances or as specified on installation wiring diagrams.

Wall module wiring can be sized from 16 to 22 AWG (1.5 to

0.34 mm
length of wire from a device to a wall module is 1000 ft (305
m). Twisted pair wire is recommended for wire runs longer
than 100 ft (30.5 m).

Keep wiring at least one ft (305 mm) away from large
inductive loads such as motors, line starters, lighting ballast,
and large power distribution panels.

Run wall module wiring separately from 50 Vac or greater
power wiring.

2

), depending on the application. The maximum

CAUTION

Low Voltage Equipment.

Risk of equipment damage.

The 24 Vac power source for this product must be a
safety isolating transformer. A transformer that is CE
certified and meets the Low Voltage Device (LVD)
requirements must be used in Europe for all
installations of this product.

1
PRESS

Fig. 2. Cover disassembly

2. a) Mount the sensor onto the wall outlet box,

or
b) bore wall holes as specified in Fig. 3 and mount
the wall module with appropriate screws.

EN0B-0644GE51 R1109A 2