User Manual Formaldehyde (HCHO or CH20) and Total Volatile Organic Compounds (TVOC) Tester Model VFM200 Additional User Manual Translations available at www.extech.
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.
7 LCD DISPLAY 1. 2. 3. 4. 5. 6. 7. HCHO reading TVOC reading Selectable units of measure Alarm Beeper symbol Auto Power OFF reminder Rechargeable Battery status High and Low Alarm symbols 1 2 6 mg/m3 5 4 3 mg/m3 Operation POWER THE METER Press the button to turn on the meter. The battery symbol informs the user as to the battery strength. Connect the battery charger to recharge the battery. Long press the button to power off. The LCD will count down: 3, 2, 1, then OFF before switching off.
CONTROL BUTTONS 1. Short press the ▼SET button to silence the beeper (when it is sounding) or to disable/enable the alarm beeper. This button is also used as a down arrow to change the high and low Alarm threshold values in the Alarm Setup mode. 2. Long press the ▼SET button to enter the Alarm Setup Mode (See Alarm Setup section). 3. Short press the ▲ UNIT button to change the unit of measure (PPM or mg/m³) or to use it as an up arrow to set the alarm threshold values in the Alarm Setup mode.
Specifications Sensor Professional Fuel Cell technology HCHO Range 0.00 to 5.00 mg/m³ (or PPM) HCHO Resolution 0.01 mg/m3 (or PPM) HCHO Basic Accuracy ±5% FS TVOC Range 0.00 to 9.99 mg/m³ (or PPM) TVOC Resolution 0.01 mg/m³ (or PPM) TVOC Basic Accuracy ±5% FS Response Time ≤ 2 seconds Operating Temperature 0°C to 40°C (32 to 104°F) Storage Temperature ‐10°C to 60°C (14 to 140°F) Power Supply Rechargeable Polymer lithium‐ion battery (7.4V 1300mAh) Battery Charge Time Approx.
