TRUEYES Air-T CO2, Air-T CO2D User Manual
Rev. 0.9
CO2 Sensor Transmitter
Air-T User Manual
http://www.trueyes.co.kr
September 2018 Rev. 0.9
C02 Sensor Transmitter
TT100
2
Air-T monitors CO2 level using TRUEYES CO2 sensor.
For more details about CO2 detection, user may refer TRUEYES CO2 sensor datasheet
(User can download it from respective product page in TRUEYES website).
Description
▪ CO2 Level Monitor.
▪ 0-10V/2-10V Analog Voltage and 0-20mA/4-20mA Current Output
▪ Supply Voltage is either 24vac or 24VDC
▪ Can be mounted on wall.
▪ User can check CO2 level easily through display
(in case of Air-T CO2D model)
Features
Model : Air-T CO2D
Model : Air-T CO2
Application
Air-T is useful in applications where CO2 level can have critical effects and needs automatic and accurate monitoring of
actual analog output, so that, it can be controlled using appropriate instrumentation, like in case of factories, industrial plants,
commercial setups. While Air-T CO2D is good for Apartments/Offices.
For Example:
Air-T CO2 can be integrated with a BAS (Building Automation System) to monitor the CO2 level of each floor by connecting
analog outputs of Air-T Modules on each floor to main monitoring unit. And, accordingly control the ventilation of each floor,
may be by installing motor controlled system through relay interface.
Where As, Air-T CO2D is good for end user to use it in any room to monitor CO2 level, through display.
http://www.trueyes.co.kr
September 2018 Rev. 0.9
C02 Sensor Transmitter
TT100
3
Parameter Min Typ Max Unit Notes
CO2 Measuring Range 0 - 10000 ppm
Accuracy (CO2)
-30 - +30 ppm
Typically +/-5%
(Above, 0 ℃)
-50 - +50 ppm
Typically +/-7%
(Below, 0 ℃)
Table 2. Sensors Specifications
Parameter Min Typ Max Unit Notes
Analog Output Range 0 - 10 V 25mV = 25ppm
4-20mA Current Output Range 4 - 20 mA 1mA = 625ppm
Response Time
(for Analog and Current Output)
1.7 2 - ms
Display Update Time - 2 2.2 s In case of Air-T CO2D
Table 3. Interface Specifications
Parameter Min Typ Max Unit Notes
Power Supply 23.5 24 24.5 VDC
Current Consumption 20 - 100 mA Test with VDC = 24V
Operating Temperature -10 - 50 ℃
Storage Temperature -30 - 70 ℃
Table 1. General Specifications
http://www.trueyes.co.kr
September 2018 Rev. 0.9
C02 Sensor Transmitter
TT100
4
Switch Function Descriptions
Analog Voltage Or Current Output Select
To
set Analog Voltage or Current Output, Follow the below picture.
Picture 2. Output Setting
Pin No. Pin Assigned
1 Output Select
2 PPM Max Set (4 bit)
3 PPM Max Set (3 bit)
4 PPM Max Set (2 bit)
5 PPM Max Set (1 bit)
6 MCAL Standard PPM
7 Relay MCAL Start
8 Enable Disable ACAL
Table 4. Pin Description
Picture 1. Mode Switch
Picture 3. Configuration Setting
Configuration Setting
If
you have set up Analog Voltage or Current Output, You can set the range, Follow the below picture.
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