Formaldehyde monitor with datalogging [HTV-M]

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.

The Formaldemeter HTV-M offers the same precise 3 parameters monitoring for low levels of hazardous formaldehyde vapours under extremes of temperature and humidity as seen in the world-wide success of the Formaldemeter HTV but with the addition of these impressive extra features:

 

Features:

• A built in non-volatile memory that can be upgraded.
• Capable of up to one month of continuous monitoring.
• A real time clock.
• Built in alarm
• Mains or battery powered.
• Can be used as a manual hand held and a continuous monitoring data logger.
• USB interface allowing direct connection to a PC for downloading data.
• Supplied with the htV-M download software.
• Manufactured to ISO 9001:2000 quality standards and compliant to CE regulations.
• Optional Wifi Module available.

 

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 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'.