Sustainable Construction
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The latest 3-parameter instrument from PPM Technology directly measures airborne formaldehyde concentrations as well as ambient temperature and humidity levels. Building on the technology developed in the popular Formaldemeter 400, with the addition of unique compensation techniques, the HTV can now accurately measure low levels of formaldehyde — even in humid conditions — while still maintaining ease of use and simple calibration.
With further importance being put on air quality in public buildings, the workplace and in homes, the HTV is aimed towards being the most accurate monitor while still providing quick and simple operation from a hand-held device.
Features:
Instrument
Sampling Method | 10ml snatch-sample of air taken by internal pump. |
Sampling Frequency | 1 minute in normal IAQ conditions. |
Response Time | 60 seconds in 'high accuracy' mode, approx. 8 seconds in 'lower accuracy' mode. |
Mechanical | 150 x 80 x 34mm ABS plastic case. Padded accessory-case 266 x 230 x 50mm. |
Weight | 270g with 9v PP3 alkaline battery. Total kit weighs 750g. |
Formaldehyde Sensor
Type | Electrochemical manufactured by PPM Technology |
Range | 0-10ppm as standard (0- 12.3 mg/m³ at 25°C). Extended range available on request. |
Resolution | 0.001 ppm |
Accuracy | 10% at 2ppm |
Precision | 94% of all instrument readings meet the NIOSH criteria for an acceptable method when measuring 0.3ppm of formaldehyde over a relative humidity range of 25-70%. The NIOSH criterion for acceptability is that all results fall within ±25% of the true value at the 95% confidence level. |
Calibration | By user with supplied calibration standard or by original manufacturer. |
Temperature & Humidity Module
Type | Interchangeable digital CMOSens |
Range | -40 to +128°C, 0–100% RH |
Accuracy | ±0.4°C, ±3% RH |
Calibration | Calibrated to ISO/IEC17025 by manufacturer. Traceable by the ‘National Institute of Standards and Technology' and the ‘National Physical Laboratory'. |