Gas Monitor

PPM htV-M Formalde meter


PPM Technology Ltd is committed to advancing existing technologies within gas detection. Using our vast experience and knowledge we are proud to make the Formaldemeter htV-m available.
The Formaldemeter HTV-m offers the same precise 3 parameter monitoring for low levels of hazardous formaldehyde vapours under extremes of temperature and humidity as seen in the worldwide success of the Formaldemeter HTV but with the addition of these impressive extra features:
The HTV-m can precisely measure formaldehyde concentrations in parts per million (ppm) and mg/m3 over a wide range of temperature and humidity. Fast and easy to use, pressing a single button gives an immediate indication of concentration levels. The improved Formaldemeter HTV-m is reliable and simple to calibrate.
The compact size means the HTV-m is small enough to be used as a hand held device. The built in memory and real time clock enables the HTV-m to log all 3 parameters and corresponding times, allowing improved monitoring and analysis opportunities. Alternatively a PC can automate the sampling and log data at specific times by a direct or wireless connection. This is advantageous as it allows the user more freedom and is a cost effective approach to taking such measurements.

HTV-M? Features:

  • Displays formaldehyde concentration in both parts per million (ppm) and mg/m³.
  • Immune to extremes of humidity and temperature thanks to a unique sampling method.
  • Simple calibration procedure can be carried out in a few minutes after only minimal training. The full kit contains a field calibration standard (6 months shelf-life) and a comprehensive operation manual.
  • 10pcs of Phenol filters are included.
  • Fast sampling by pressing a single button and quick recovery from normal concentrations.
  • A built in non-volatile memory
  • Capable of up to 1 month of continuous monitoring
  • A real time clock
  • Mains or battery powered
  • Can be used as a manual hand held and a continuous monitoring data logger
  • An RS232 interface allowing direct connection to PC
  • Internal Audible Alarm (Optional Extra)
  • Can be connected to PC via a one-to-one wireless system – (Optional Extra)




HTV-M Instrument
Sampling Method 10ml snatch-sample of air taken by internal pump.
Sampling Frequency 1-3 minutes, depending on previous sample.
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.
270g with 9V PP3 alkaline battery
Total kit weighs 750g.
Formaldehyde Sensor
Type Electrochemical manufactured by PPM Technology.
0-10ppm as standard (0- 12.3 mg/m³ at 25°C).
Extended range available on request.
Resolution 0.01 ppm / 0.01 mg/m³
Precision 2%
Accuracy 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?00% RH
Accuracy ±0.4°C, ±3% RH
Optional upgrade to ±0.3°C, ±1.8% RH
Calibration Calibrated to ISO/IEC17025 by manufacturer. Traceable by the National Institute of Standards and Technology and the National Physical Laboratory
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