CO2 AND HUMIDITY METER

SPECIFICATIONS

• Circuit : Custom one-chip of microprocessor LSI circuit.
• Display : LCD size : 52 mm x 38 mm ; LCD with green backlight ( ON/OFF ).
• Measurement :
  CO2 (Carbon dioxide )
  CO ( Carbon monoxide )
  O2 ( Oxygen in air )
  Humidity
  Dew point Temp., Wet bulb Temp.
• Data error number : 0.1% of total saved data max.
• Memory Card : SD memory card. 1 GB to 16 GB.
• Sampling time of display : Approx. 1 second.
• Power Supply : AAlkaline or heavy duty DC 1.5 V battery ( UM3, AA ) x 6 PCs, or equivalent.

ELECTRICAL SPECIFICATIONS

• CO2 ( Carbon dioxide )
  Range : 0 to 4,000 ppm
  Resolution : 1 ppm
  Accuracy : ± 40 ppm : 1,000 ppm ; ± 5% of reading : > 1,000 ppm 3,000 ppm ; ± 250 ppm typically : > 3,000 ppm, reference only
• Temperature :
  Range : 0 ℃ to 50 ℃ ; 32 ℉ to 122 ℉
  Resolution : 0.1 Degree
  Accuracy : ℃ : ± 0.8 ; ℉ : ± 1.5

• CO ( Carbon dioxide )
  Range : 0 to 1,000 ppm
  Resolution : 1 ppm
  Accuracy : ± ( 5% + 2 ppm )
  Response Time : < 30 seconds
  Sensitivity Drift : < 5% per year
• Temperature :
  Range : 0 ℃ to 50 ℃ ; 32 ℉ to 122 ℉
  Resolution : 0.1 Degree
  Accuracy : ℃ : ± 0.8 ; ℉ : ± 1.5

• O2 ( Air oxygen )
  Range : 0 to 30 %O2.
  Resolution : 0.1 %O2.
  Accuracy : ± ( 1 % reading + 0.2 % O2 )
  Response Time : <= 15 seconds
  Sensitivity Drift : < 5% per year
  Overload Protection : 100 %O2.
  Environment Pressure Range : 0.9 to 1.1 atmosphere.
• Temperature :
  Range : 0 ℃ to 50 ℃ ; 32 ℉ to 122 ℉
  Resolution : 0.1 Degree
  Accuracy : ℃ : ± 0.8 ; ℉ : ± 1.5

FEATURES 

• RS232/USB computer interface.
• Meter can cooperate with 2 GB to 16 GB SD card, SD card is optional .
• Separate probe, easy for remote measurements.
• Complete set of 4 probes : CO2/Temp. probe, O2/Temp. probe, CO/Temp. probe,Humidity/Temp. probe, main meter and the hard carrying case.
• Sampling time for data recorder is 2 seconds to 8 hours
• Alarm setting with the beeper sound output
• Humidity sensor : Precision capacitance sensor
• CO, O2 sensor : Galvanic cell type.
• CO range : 0 to 1,000 ppm x 1 ppm
• O2 range : 0 to 30.0 % x 0.1 %.
• CO2 range : 0 to 4,000 ppm x 1 ppm.