The AQM-101 is designed to measure HCHO concentration, air temperature and relative humidity with visible and audible alarms. This HCHO monitor is an ideal instrument for indoor air quality (IAQ) diagnosis and HVAC system performance verification.
FORMALDEHYDE (HCHO) is a gaseous component of the earth’s atmosphere. The concentration of HCHO in natural ambient air is about 0.03 ppm. Formaldehyde is found in a number of products. While most of these products contain a relatively low amount of the compound, others have a fairly strong concentration of formaldehyde. This is particularly true with products used in the course of scientific research and other professions where tissue is preserved in some manner. Formaldehyde exposure can lead to side effects that range from mild to life-threatening.
SPECIFICATIONS HCHO Measurement Range: 0.00 to 5.00 ppm @25°C (77°F), ambient pressure Accuracy (0.00 to 5.00 ppm): ±5%, + 0.03 ppm Resolution: 0.01 ppm Temperature Range: 0 to 50°C (32 to 122°F) Accuracy: ±0.1°C (2°F) [0 to 50°C (32 to 122°F)] Resolution: 1°C (1°F) Relative Humidity Range: 10 to 80% RH Accuracy: ±3% RH [at 25°C (77°F), from 10 to 80 RH], ±5% RH below 10% Memory Capacity: 32,000 readings Storage Temperature: -40 to 70°C (-40 to 158°F) Interface: USB Response Time: Less than 30 seconds (T90) Dimensions: 110 H x 108 W x 28 mm D (4.33 x 4.25 x 1.10') Weight: 165 g (5.8 oz)
Rated 4 out of
Reliable reading and reproducibilityWe purchased this model instead of other cheaper versions hoping to get an industrial level accuracy and reliability for the reading. We are quite happy on the reading stability and reproducibility so far. Repeated measurements comparing with fresh outdoor air has been done and this meter has proven to be solid. Battery life is also quite good.
On the other side, you would need a Windows computer to be able to do logging. The unit does not log anything internally.
The meter not only responds to Formaldehyde. It also responds to, say, acetone, tested so far. I would recommend Omega to provide a list of VOCs this meter is also responding to, and the associated corrections need to be applied. Or simply put the options into the firmware.
It is not easy to tell if you are actually getting response from Formaldehyde or it could be some other VOCs being measured. In some limited scenarios, you could associate with the actual smell to distinguish the actual gas you are dealing with. For example, if you are using acetone to do some cleaning, you know the reading is from Acetone.