ST-501 CO2/Temp./RH Monitor

  • 3 Independent CO2, humidity and temperature sensors.
  • User operated CO2 calibration.
  • USB datalogg: 50,000 records.
  • Internal backup battery to maintain date/time setting. 
  • Power management IC to increase batter efficiency. 
  • Easy- to-Use PC software for parameter settings and data analysis.
  • Internal CO2 alarm buzzer.
  • CO2 Sensing Method: NDIR (Non-Dispersive Infrared)
  • Measures: Carbon dioxide in PPM, temperature (F or C), % Relative Humidity
  • CO2 Measurement range: 0~9999 ppm (2001~9999 ppm over range)
  • CO2 Accuracy: ± 75ppm, ± 8% of reading (0~2000 ppm)
  • Display Resolution - ±1 ppm
  • Datalogging: 50,000 records, - Fast USB download (50,000 records in less than 10 seconds.)

CO2 Sensor

Type

Non-dispersive infra-red (NDIR)

Measurement Range

0~9999 ppm (2001~9999 ppm over range)

Accuracy

± 75ppm, ± 8% of reading (0~2000 ppm)

Resolution

±1 ppm

Response Time

2 seconds

 

Relative Humidity Sensor

Temperature Sensor:

Type

CMOSens

Type

Thermistor

Measurement Range

1% ~99%

Measurement Range

0 to 50C

Accuracy

±3.0%RH(20~80%)

±5.0%RH(80%)

Accuracy

±0.5C from 0-50C

Resolution

0.1%

Resolution

0.1C

Response Time

8 Seconds

Response Time

1 seconds

         

 

Power Supply

Battery

Four AAalkaline batteries x4

Battery Operation

24 hours

External Power Supply

6V VDC with 0.5A