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AZ 77596 Combo CO2, CO, Temperature Meter

77596 AZ Combo CO2 & CO & TEMP. meter features:
*Professional portable meter to check and record indoor air quality
*Big LCD with blue back light to use in dark area
*One touch to display CO2, temperature, CO in turns
*Designed with NDIR (non-dispersive infrared) wave guide technology CO2 sensor
*Designed with fast response electrochemical CO sensor
*Programmable warning CO level
*Long time drift compensation on CO2 sensor
*Audible alarm (~80db) threshold setting
*Max, Min, TWA, SETL, average, hold functions included
*Mini USB output to PC download function for data analysis
*99 points manually recording could be review
*Up to 32000 points auto logging memory
*Housing design surrounds with rails to help Air ventilation for quick and accurate response
*Easy to manually calibrate CO2 at fresh air around 380~420 ppm
*Manual calibration is also available for CO


Application of 77596 AZ CO CO2 Data logger:
The 77596 AZ portable CO2 meter is a multi gas detector, which could measure the indoor air quality index, including the CO2, CO concentration and air temperature.

The 77596 AZ CO2, CO device could be used as the CO2 data logger for the air quality index in all work space, office, hospital, school, station or home. It is and ideal instrument for indoor air quality (IAQ) diagnosis.

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.

CO is a colorless, odorless, and tasteless gas which is slightly lighter than air. It is highly toxic to humans and animals.

Maximum indoor air quality level per ASHRAE Residential standards 62-1989 for living area is under 9 ppm. Besides, it is also necessary to remove employees from enclosed space if the CO concentration exceeds 100 ppm per OSHA exposure limit.

The portable AZ 77596 Combo CO2, CO, Temperature Meter uses NDIR (non-dispersive infrared) technology to ensure the reliability and long term stability. It’s useful in verifying HVAC system performance and air ventilation control.

AZ 77596 Combo CO2, CO, Temperature Meter was being designed and manufactured by AZ Instrument, a well experienced manufacturer for Environmental Measuring Instrument.


Specification of 77596 AZ CO CO2 Data logger:

Model 77596
CO2 Range 0~9999 ppm 
(5001~9999 ppm out of scale range)
CO2 Resolution 1 ppm
CO2 Accuracy ±30 ppm ±5% of reading (0~5000 ppm),
other range are not specified
CO2 Response Time <30 Seconds (90% step change)
CO2 Warm-up Time 30 Seconds
CO Range 0~1000 ppm
CO Resolution 1 ppm
CO Accuracy ±10 ppm for less than 100 ppm,
±10% of reading for 101~500 ppm,
±20% of reading for 501 ppm and above
CO Response Time <60 Seconds (90% step change)
Air Temperature Range -20~60℃, -5~140℉
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 44(L) * 26(W) mm
Meter Size 205(L) * 70(W) * 56(H) mm
CO2 Sensor Operating Temperature -20~50℃
CO Sensor Operating Temperature 0~50℃
Other parameters Operating Temperature -20~60℃
Storage Temperature -20~60℃
Storage RH% 10~90% RH (avoid condensation)
Power Supply AA * 4 PCS or 9V adaptor
Battery life > 24 hours (Alkaline Battery)
Weight ~200g
Standard Package Meter, Manual, Batteries, 
USB Cable & CD, Hard Carry Case
AZ CO2 meters are your reliable choices to measure CO2 in the air
Welcome to download and check the specification, CE certificate and the operation manual of 77596 AZ CO2 data logger from below link.

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