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ST-501 CO2 / Temperature / RH Monitor

 With it’s non-dispersive infrared (NDIR) sensor measuring CO2, CO2 ventilation rate, temperature and humidity while ensuring long-term stability and durability, ST-501 CO2 / Temperature / RH Monitor is ideal for building HVAC monitoring, indoor air quality surveying or locating combustible fumes. Providing a large easy-to-read display, internal CO2 alarm buzzer and inbuilt parameters capable of adjusting CO2 reading for altitude changes, ST-501 is suitable for use in most environments. ST-501 also offers data logging of up to 50,000 records and fast USB download (under 10 seconds), with easy-to-use PC software perfect for data analysis.

Downloads
Features & Downloads
Features

  • 3 Independent CO2, humidity and temperature sensors

  • User operated CO2 calibration

  • Datalogging- 50,000 records

  • Fast USB download (50,000 records in less than 10 seconds)

  • 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

Applications
Applications

  • Building HVAC Monitoring.

  • Indoor Air Quality Survey.

  • Locate Combustion Fumes.

Technical Specifications
Technical Specifications

  • 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 : ± 60 ppm, ± 5% of reading (0~2000 ppm)

  • Display Resolution : ±1 ppm

  • Datalogging : 17,000 records, 

  • Fast USB download (50,000 records in less than 10 seconds.)

  • CO2 Sensor :

    • Measurement Ranges : 0 to 9999 PPM

    • Accuracy : ±60 ppm or 5% of the reading

    • Resolution : ±1 ppm

    • Response time : 2 seconds

  • Relative Humidity Sensor :

    • Measurement Ranges : 1% - 99% 

    • Accuracy: ±3.0% RH (20%~80%) , ±5.0% RH (<20%,>80%)

    • Resolution : 0.1%

    • Response time : 8 Seconds

  • Temperature

    • Measurement Ranges : 0° C ~ 50°C

    • Accuracy : 1°C  from  °C ~50°C

    • Resolution : 0.1°C

    • Response time : 1 Second

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