User manual

EXTECH INSTRUMENTS
6 FM200-en-GB_V1.8 3/17
Hold Function
Press the HOLD button to freeze the current readings on the screen during normal measurement
mode. The HOLD icon will display when HOLD is activated. In the HOLD mode, some functions
are temporarily disabled (MAX/MIN and units selection). Press the HOLD button again to return
to normal operation.
Backlight Function
Press the / button to activate the display backlighting. Power off the meter to disable the
backlight function or press the
/ button again.
Self-Calibration (HCHO)
Power the meter and hold the MODE button to enter the calibration
mode. “CAL” will begin flashing on the LCD display. Note that the
calibration period is approximately 5 minutes.
IMPORTANT: Please perform the Calibration in an absolutely clean air
environment with no HCHO present.
Temperature and Humidity Offset
While the meter is off, press and hold the MODE + + + buttons all simultaneously until
the LCD shows 0.0°C and SET. Use the HOLD /
button to increase the value and the /
button to decrease the value. To skip the temperature adjustment, short press the SET button.
Follow the same steps for the RH% offset. Press and hold the SET button to save the adjustment
values. The LCD will display “SAVE”. To complete the offset, reset the meter (cycle power OFF
then ON).
Note: The maximum offset ranges are ±9.9°C/F and ±9.9%RH.