Description
AZ 7721 CO2 and temperature. Meter Features:
* Super large LCD display with CO2 value and temperature simultaneously
* Designed with NDIR (non-dispersive infrared) waveguide technology
* ABC (Automatic Background Calibration) preset for long-term drift compensation
* Displays 8-hour TWA value (time-weighted average) or 15-minute STEL value (short-term exposure limit)
* Easy to manually calibrate CO2 in fresh air
* Digital wall mountable/desktop type
* Carbon dioxide level warning
* Alarm output, relay drive to control system
Application of 7721 AZ CO2 Meter:
The 7721 AZ wall-mounted CO2 detector could measure the indoor air quality index (IAQ), including CO2 concentration, CO2 level, and air temperature. The carbon dioxide value can be sent to a PC for online analysis via the USB interface. And it can be easily calibrated outdoors.
Interestingly, poor indoor air is considered unhealthy because it causes tiredness, loss of ability to concentrate, and even illness (e.g., Sick Building Syndrome). IAQ monitoring and inspection, especially in CO2 level and air ventilation, are widely applied in public areas such as offices, classrooms, factories, hospitals, workspaces, residential, commercial buildings, and hotels. It is also suggested in the industrial hygiene regulations of some countries.
The 7721 AZ CO2 device has the function of relay, which could transfer the signal to control the other equipment. The 7721 AZ CO2 meter has a stable NDIR CO2 sensor and is the ideal instrument for IAQ diagnosis. Its large LCD screen might be the best CO2 monitor for long-term monitoring. The user can use the relay function to control or transfer the data to the following related instruments. And the built-in alarm output is especially useful in ventilation control and HVAC system performance verification.
The 7721 AZ CO2 and temperature meter was designed and manufactured by AZ Instrument, an experienced manufacturer of environmental measuring instruments.
Specs
Model No.: 7721
CO2 range: 0~9999 ppm (2001~9999 ppm outside the scale range)
CO2 Resolution: 1 ppm
CO2 accuracy: ± 50 ppm ± 5% of reading (0~2000 ppm), other range not specified
CO2 Response Time: < 30 seconds (90% step change)
CO2 heating time: 30 seconds
Air Temperature Range: -10~60°C, 14~140°F
Air Temperature Resolution: 0.1°C, 0.1°F
Air Temperature Accuracy: ± 0.6, ± 0.9
Air Temperature Response Time: < 2 minutes (90% step change)
LCD Size: 65(L)*50(W)mm
Meter Size: 130(L)*85(W)*60(H)mm
Operating Temperature: 0~50°C
Operating RH%: 0~95% RH (avoid condensation)
Storage Temperature]: -20~50°C
Storage RH%: 0~90% RH (avoid condensation)
Power supply: DC 12V adapter
Battery life:< 50 mA (average),< 310 mA (peak)
Weight: ~200g
