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ST-502 CO2 / Temperature / RH Monitor

Desktop Indoor Air Quality (IAQ) Monitor

ST-502 is a desktop indoor air quality monitor that can measure carbon dioxide, relative humidity, air temperature, and ventilation rate.

Downloads
Features & Downloads
Features

  • Non-Dispersive Infrared (NDIR) CO2 sensor ensures long term stability and durability.

  • 4 Measurements-CO2/CO2 Ventilation Rate/Temperature/Humidity.

  • Large display.

  • Easy -to-use PC software for parameter settings and analysis.

  • Fast USB download.

  • CO2/Temperature/Humidity high,low alarm setting.

  • Set on the table or wall-Mounted (use 1/4”tripod nut).

  • Power adaptor AC 100V~240V to DC 12V/1.0A

Applications
Applications

  • Building HVAC Monitoring.

  • Indoor Air Quality Survey.

General Specifications
General Specifications

  • Read value display: Triple-display LCD monitor

  • Display unit: ℃/℉, PPM, %RH

  • Maximum value/Minimum value

  • Alarm function

  • Memory can store a maximum of 17,000 data entries.

  • Record time interval: 5 seconds/10 seconds/1 minute/5 minutes/10 minutes/30 minutes/1 hour/2 hours

  • Operating power consumption: 2.4W

  • Power adaptor AC 100V~240V to DC 12V/1.0A.

  • Internal backup battery to maintain date/time setting.

  • Operation condition: 0-50˚C (32-122˚F), 5-95%RH(non-condensing).

  • Storage temperature & Humidity: -10~60˚C (14~140˚F) ≦70%RH.

  • Supported operating systemsL XP/Windows 7/Windows 8.1/Windows 10

  • Weight: Approximately 190 grams

  • Dimensions: 89 x 62 x 128 mm (L x W x H)

Technical Specifications
Technical Specifications

  • Carbon Dioxide

    • Type: Non-dispersiveinfra-red (NDIR)

    • Measurement Ranges: 0 - 9999 PPM

    • Accuracy: ±5% of reading or ±75ppm.(0-2000ppm, others out of scale range)

    • Resolution: ±1ppm

    • Response Time: Typical 2 minutes by 90%

  • Temperature

    • Type: Thermistor

    • Measurement Ranges: 0℃ - 50℃ / 32˚F~122˚F

    • Accuracy: ±1.0˚C/±1.8˚F

    • Resolution: 0.1˚C/0.1˚F

    • Response Time: Typical 1 second

  • Relative Humidity

    • Type: Capacitive

    • Measurement Ranges: 5 - 95% RH

    • Accuracy: ±3.0%RH (20~80%); ±5.0%RH (80%)

    • Resolution: 0.1%

    • Response Time: Typical 4 seconds

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