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PORTABLE CO

2

METER

User Manual

English and Deutsche

Languages

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Summary of Contents for 7755

Page 1: ...PORTABLE CO2 METER User Manual English and Deutsche Languages...

Page 2: ...tection Statistics of weighted averages TWA 8 hours weighted average STEL 15 minutes weighted average Backlight for working in dark area Audible CO2 warning alarm Battery and adaptor power supply Easy...

Page 3: ...RATION Turns on and off the meter Enters setup mode Sets as non sleep mode with Exits setup page mode Enters CO2 calibration with Enters RH calibration with Freezes the current readings Cancels data h...

Page 4: ...ACKLIGHT Under normal mode press to see the minimum maximum and weighted average readings Each press of it displays MIN MAX STEL TWA in sequence and returns to normal mode In MIN and MAX modes it show...

Page 5: ...the air with unknown CO2 concentration Otherwise it will be calibrated as 400ppm by default and leads to inaccurate measurements Hold down under normal mode for more than 1 second to enter setup mode...

Page 6: ...voltage during the calibration to prevent from interruption or failed calibration RH CALIBRATION CAUTION Do not calibrate the humidity without the default calibration salt Otherwise it will cause per...

Page 7: ...LD icon at the left top FIXED READINGS Check whether the air flow channels on the rear were blocked E01 E02 E03 E04 E07 E11 E17 E31 E34 CO2 sensor damaged The value is under range The value is over ra...

Page 8: ...ty complaints Less clearly interpreted Indicated inadequate ventilation complaints such as headaches fatigue and eye throat irritation will be more widespread 1000ppm should be used as an upper limit...

Page 9: ...event any damage in delivery and insured against possible damage or loss Hygrometer Psychrometer Thermometer Anemometer Sound level meter Air Flow Meter Infrared Thermometer K type Thermometer K J T t...

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