C7110A1010
ROOM AIR QUALITY SENSOR
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.
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 |
|
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/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 |
|
industrial, and industrial |
Models
order no. |
description |
output signal |
C7110A1010 |
Room Air Quality Sensor |
0...10 Vdc |
|
|
|
® 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 CO2 sensors, which selectively measure the 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.
VOLTAGE |
HYDROGEN |
ETHANOL |
|
ISOBUTANE |
|
|
|
OUTPUT |
CO |
|
|
INCREASING |
METHANE |
|
INCREASING GAS CONCENTRATION
Fig. 1. Output voltage as a function of gas concentration
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 mm2), depending on the application. The maximum 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.
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.
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
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 |
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