Meter Description - Extech Instruments VFM200 User Manual

Introduction
Thank you for selecting the Extech Instruments Model VFM200. The VFM200 measures HCHO
(formaldehyde) and TVOC (Total Volatile Organic Compounds).
Potential sources for TVOCs include paints, finishes, adhesives, cigarette smoke, pesticides,
personal care products, car exhaust, new furnishings, wall coverings, household cleansers, and
cooking fuels. Chemicals include: Acetone, Ethylene Glycol, Formaldehyde, Xylene, 1,3‐butadiene,
Tetrachloroethene, Hydrogen Sulfide, Ammonia, Toluene, Benzene, Methylene Chloride,
Perchloroethylene, and MTBE.
This device is shipped fully tested and calibrated and, with proper use, will provide years of reliable
service. Please visit our website (www.extech.com) to check for the latest version of this User
Guide, Product Updates, and Customer Support.
Features
 Fuel Cell Formaldehyde Sensor Technology
 High accuracy measurements
 Backlit LCD display
 Real‐time display of HCHO (formaldehyde) concentration in air
 Real‐ time display of TVOC (Total Volatile Organic Compounds) concentration in air
 Two unit selections (PPM, mg/m³)
 Audio‐visual High and Low Alarms for HCHO
 Auto power off
Description
METER DESCRIPTION
1. HCHO sensor (front)
2. AC Adaptor jack (under flap)
3. Down arrow and Alarm Setup button
4. Battery compartment (rear)
5. ON‐OFF button (also used in Alarm Setup)
6. Up arrow and UNIT selection button
7. Backlit Display
8. TVOC sensor (rear)
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