7722 AZ EB
CO2 Monitor with Relay
Features
ISO 9001 Facility: Manufactured in an ISO 9001 certified environment.
CE EN 61326-1 & IEC 61000: Designed and tested to meet European EMC safety standards.
RoHS & REACH Compliant: We provide a Manufacturer’s Self Declaration, ensuring the product meets environmental safety standards for hazardous substances.
AZ 7722 CO2 & Temp. & RH 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
The 7722 AZ Wall Mount CO2 Humidity detector could measure the indoor air quality (IAQ) index, including the CO2 concentration, CO2 level, air temperature, dew point, wet bulb temperature and humidity. 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 7722 AZ CO2 RH Thermometer device has the relay function, which could transfer the signal to control the other equipments. The 7722 AZ CO2 Temperature RH 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.
The 7722 AZ CO2 & Temperature Meter was being designed and manufactured by AZ Instrument, a well experienced manufacturer for Environmental Measuring Instrument.
Specification
Specification of AZ 7722 CO2 & Temperature & RH Meter:
Model
7722
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)
Humidity Range
0.1~99.9% RH
Humidity Resolution
0.1% RH
Humidity Accuracy
±3%RH (at 25℃, 10~90%RH); others ±5%RH
Humidity Response Time
＜10 mins (90% step change)
Dew Point Temperature
-20.0~59.9℃
Wet Bulb Temperature
-5.0~59.9℃
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, 12V USA Type Adaptor, Paper Box
Youtube
FAQ
【FAQ of AZ 7722 CO2/Temp/RH Monitor with Relay Control】
Q1: What are the advantages of the NDIR sensor in the AZ 7722?
A: The Non-Dispersive Infrared (NDIR) sensor provides superior long-term stability and high specificity to CO2. Unlike low-cost IC sensors, it is not cross-sensitive to humidity or other volatile organic compounds (VOCs), ensuring professional-grade accuracy in diverse indoor environments.
Q2: Can the AZ 7722 be used for workplace safety compliance?
A: Yes. The device tracks TWA (8-hour Time Weighted Average) and STEL (15-minute Short-Term Exposure Limit) values. These metrics are essential for occupational health standards to ensure ventilation systems effectively maintain CO2 levels below safety thresholds.
Q3: How do I ensure the CO2 readings stay accurate?
A: The device provides two calibration options to maintain the precision of its NDIR sensor:
* ABC (Automatic): It self-corrects sensor drift by tracking the lowest CO2 levels over 7 days. It is ideal for offices or schools that get fresh air at night.
* Manual Calibration: For spaces without regular fresh air (like 24-hour factories or greenhouses), you can manually reset the 400ppm baseline in fresh outdoor air using the touch panel.
