Metria 77532 Manual Del Usuario página 7

P3.0 Temperature scale
Press MODE or BKLT in P1.0 to access P3.0 for setting up temperature scale (Fig. 9). Press M
with blinking ºC or ºF current set (Fig. 10) on the lower left LCD. To switch ºC or ºF, press MODE and BKLT. Then
press M /AV to save the setting or CAL/ESC without saving to return to P3.0.
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Figure 9
CO calibration
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The meter is calibrated at standard 400 ppm CO
calibration regularly to maintain good accuracy.
CAUTION:
Do not calibrate the meter in the air with unknown CO
ppm by default and leads to inaccurate measurements.
The manual calibration is suggested to be done in fresh outdoor air that is well ventilated and sunny weather.
Place the meter in the calibration site. Turn on the meter and hold down CAL/ESC and MODE simultaneously to
enter CO calibration mode (Fig. 11). 400 ppm and "CAL" will blink in the LCD while performing the calibration.
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Figure 11
Wait about 5 minutes until the blinking stops and the calibration is completed automatically and back to normal
mode. To abort the calibration, turn off the meter at any time.
NOTE: Ensure the batteries are with full voltage durnig the calibration to prevent from interruption or failed
calibration.
Figure 10
concentration in factory. It's suggested to do a manual
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concentration. Otherwise, it will be calibrated as 400
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/AV enter P3.1
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