Product Description

Features

AZ 7721 CO2 & Temperature . meter features:
* Super large LCD display CO2 value and temperature simultaneously
* Designed with NDIR (Non-Dispersive Infrared) wave guide technology
* ABC (Automatic Background Calibration) preset on for long time drift compensation
* Display 8 hrs TWA value (time-weighted average) or 15 minutes STEL value (short-term exposure limit)
* Easy to manually calibrate CO2 at fresh air
* Digital wall mountable / desktop type
* Warning Carbon Dioxide level
* Alarm output drive relay to control system

Application

Application of 7721 AZ CO2 Meter:

The 7721 AZ Wall Mount CO2 detector could measure the indoor air quality (IAQ) index, including the CO2

concentration, CO2 level and air temperature. The Carbon Dioxide value can be output to PC for on-line analysis

via USB interface. And it can be calibrated easily in the fresh air.

Poor indoor air quaintly is considered unhealthy because it causes tiredness, loss of ability to concentrate, and

even illness (ex: sick building syndrome). IAQ monitoring and survey, especially on CO2 level and air ventilation

become widely applied in public areas such as office, classroom, factory, hospital, work space, residential,

commercial building and hotels. It is also suggested in regulations of industrial hygiene in some countries.

The 7721 AZ CO2 device has the relay function, which could transfer the signal to control the other equipment.

The 7721 AZ CO2 meter has the stable NDIR CO2 sensor, and it is the ideal instrument for IAQ diagnosis.

Its big LCD could be the best CO2 Monitor for long term monitoring. User could use the relay function to control

or transfer the data to the following related instruments. And the built-in alarm output is especially helpful in

ventilation control and HVAC system performance verification.

Specification

Specification of 7721 AZ CO2 Meter:

Model	7721
CO2 Range	0~9999 ppm (2001~9999 ppm out of scale range)
CO2 Resolution	1 ppm
CO2 Accuracy	±50 ppm ±5% of reading (0~2000 ppm), other range are not specified
CO2 Response Time	＜30 Seconds (90% step change)
CO2 Warm-up Time	30 Seconds
Air Temperature Range	-10~60℃, 14~140℉
Air Temperature Resolution	0.1℃, 0.1℉
Air Temperature Accuracy	±0.6℃, ±0.9℉
Air Temperature Response Time	＜2 mins (90% step change)
LCD Size	65(L) * 50(W) mm
Meter Size	130(L) * 85(W) * 60(H) mm
Operating Temperature	0~50℃
Operating RH%	0~95% RH (avoid condensation)
Storage Temperature	-20~50℃
Storage RH%	0~90% RH (avoid condensation)
Power Supply	12V DC Adaptor
Battery life	＜50 mA (average), ＜310 mA (peak)
Weight	~200g
Standard Package	Meter, Manual,Paper Box, 12V USA Type Adaptor

Price Terms︰ FOB Shenzhen

Payment Terms︰ TT/Western Union/Paypal

Packing︰ Export carton

Lead Time︰ 4 days

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