Herter CO2 meter

The IAQ gas detector has a dual display with 3 simultaneous parameters for CO2, temperature and humidity, and with backlighting for low light conditions.

The IAQ gas detector has a design with NDIR (non-dispersive infrared) wave technology sensor.

Manual calibration is recommended, and it is easy to calibrate outdoors around 380 - 420 ppm.

The IAQ gas detector has a Hold function with which it fixes the current measurement readings on the display for 8 hours (time-weighted average function) or for 15 minutes (short-term exposure limit). It also has a max, min, and average function.

It has several warning signals for the CO2 level, such as an audible alarm of ~80 db.

• Meter for CO2, temperature, and relative humidity.
• Hold function.
• Max, min, and average function. and average
• Dual LCD display with 3 parameters
• Carbon dioxide level warning
• NDIR (non-dispersive infrared) design with wave technology sensor

Herter CO2 Meter Technical Specifications

• Measuring range
• CO2: 0 ~ 9999 ppm (5001 ~ 9999 ppm out of scale range)
• Temperature: -10 ~ 60 ºC (14 ~ 140 ºF)
• Relative humidity: 0.1% ~ 99.9% R.H.
• DP (dew point temperature): -20.0 ~ 59.9 ºC
• WB (wet bulb temperature): -5.0 ~ 59.9 ºC
• Resolution: 1 ppm, 0.1 °C / °F, 0.1% R.H.
• Accuracy:
• CO2 +50 ppm +5% of reading (0 ~ 2000 ppm) Other ranges not specified
• Temperature: +0.6 ºC / +0.9 ºF
• Relative humidity: +3% R.H. (from 25ºC, 10~90% RH); +5% RH (at 25ºC, others)
• Warm-up time: 30 s
• Response time:
• CO2: <30 seconds (90% step change)
• Air: <2 min. (90% step change)
• Relative humidity: <10 min. (90% step change)
• Relay: No
• LCD display: 26 x 44 mm
• Operating ambient conditions: 0 ~ 50 ºC, 0~95% RH (non-condensing)
• Storage ambient conditions: -20 ~ 50 ºC, 0~95% RH (non-condensing)
• Power supply: 4 x AA batteries (life > 24 h alkaline batteries)
• Dimensions: 205 x 70 x 56 mm
• Weight: 200 g

Includes

• 1 x IAQ 7755 Gas Detector
• 4 x AA Batteries
• 1 x Carrying case
• 1 x Instructions for use