AQM-101-HCHO-Monitor

Formaldehyde Monitor and Data Logger with LCD Display

Models In Stock

Large LCD Displays Hcho Level, Temperature, Relative Humidity, Calendar (Y/M/D) and Time
Three (3) Smiley Icons Indicate Indoor Air Quality Levels at (0/0.08/0.8 ppm)
Stable Electrochemical Sensor for Hcho Detection
Programmable High Alarm

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From ^TWD 16,914

Models In Stock

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1 Variations available

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Data Sheet

Product Overview

Additional Features 1 Wrong Location Environmental Monitor
Accuracy ± 5 % , + 0.03 ppm
Air Quality Measurement 0 to 5 ppm
Air Quality Measurement Note 0.00 to 5.00 ppm @25ºC (77ºF), ambient pressure
Battery Size and Type Alkaline AAA
Data Interface USB
Display Type LCD
Height 110 mm
Length 28 mm
Memory 32,000 readings
Number of Batteries 4
Process Temperature, Max 50 °C
Process Temperature, Min 0 °C
Relative Humidity 10 to 90%
Relative Humidity Accuracy ± 5% RH
Relative Humidity Accuracy Note ±5% RH [at 25ºC (77ºF)]
Resolution 0.01 ppm
Response Time < 30 sec (T90)
Sensor Type Stable Electrochemical
Series ID AQM-101-HCHO-Monitor
Storage Temperature, Max 70 °C
Storage Temperature, Min -40 °C
Temperature Accuracy ± 0.1 °C
Temperature Resolution 0.1 °C
Weight 165 g
Width 108 mm

Supported Applications

The AQM-101 is a desktop formaldehyde (HCHO) monitor and data logger built for indoor air quality (IAQ) diagnosis and HVAC system performance verification. It simultaneously measures and displays HCHO concentration, air temperature, and relative humidity, making it well suited to inspecting residences, offices, schools, and manufactured or newly renovated spaces where off-gassing from building materials and furnishings is a concern.

Three "smiley" icons on the large LCD indicate indoor air quality levels at a glance, while a programmable high alarm with audible and visible LED warnings alerts occupants when concentrations climb. The device continuously computes TWA (Time Weighted Average over 8 hours) and STEL (Short-Term Exposure Limit over 15 minutes) values, supporting exposure assessments against published guidance.

Local regulatory exposure limits will vary. For reference, the unit's documentation lists non-enforced levels such as 0.03 ppm (background outdoor air), 0.10 ppm (a recommended residential upper limit), and 2.00 ppm (a typical OSHA STEL reference).

Operating Conditions & Performance

The AQM-101 measures HCHO across a range of 0.00 to 5.00 ppm, with a resolution of 0.01 ppm for formaldehyde. Temperature is monitored over 0 to 50°C (32 to 122°F) and relative humidity over 10 to 90% RH. HCHO accuracy is specified as ±5%, ±0.03 ppm, temperature accuracy as ±0.1°C, and humidity accuracy as ±5% RH at 25°C (77°F).

The electrochemical sensor delivers a fast response of less than 30 seconds (T90) and has an expected life of 3 years. Onboard memory stores 32,000 points of logged data. The unit is powered by 4 'AAA' batteries with an optional AC adaptor, and connects to a PC over USB for download. It weighs 165 g (5.8 oz) and carries CE approval. Recommended storage is -40 to 70°C (-40 to 158°F).

Configuration Options

The series centers on a single instrument configuration, the AQM-101, which integrates HCHO, relative humidity, and temperature measurement together with data logging in one desktop unit. All core capabilities — the electrochemical HCHO sensor, LCD display, programmable high alarm, manual 0 ppm calibration, and audible/visible LED warnings — are delivered by this base model.

The only functional difference in the lineup comes from powering options: the base AQM-101 runs on batteries, and adding the AQM-100-PW AC adaptor accessory enables continuous mains-powered logging for long, unattended monitoring sessions.