Siro

      Categories IAQ Sensors, Indoor Air Quality Transmitter

      Siro is an indoor air quality transmitter with a modern design. The transmitter is available with several optional air quality sensors. The modular device can be equipped with CO2 concentration and VOC (Volatile Organic Compounds) measurements or alternatively PM (Particulate Matter) measurement, and in addition, temperature and humidity measurements. It offers easy installation and adjustment, several different model options and various output signals that are configurable separately for each measurement parameter.

      Brand : HK Instruments

      Get Quote
      • Description
      • Attachment

      The Siro series devices are available with a user interface that includes an LCD display and buttons making the configuration of the device quick and easy. An external configuration tool is available for devices without the user interface. Siro utilizes the industry standard NDIR measurement principle with self-calibrating ABC logicTM for CO2 measurement.

        Siro series devices include

      • Several options for indoor air quality measurements (CO2, VOC,
        PM, rH, T).
      • Field configurable outputs for selected measurements.
      • Proportional output options including voltage (0–10 V, 0–5 V,
        2–10 V) and optional current (4–20 mA).
      • Offset feature enabling field calibration for each measurement
        parameter (CO2, VOC, PM, rH, T).
      • Optional LCD-display and buttons.

      Technical Details

      Accuracy CO₂: ±43 ppm + 3 % of reading (typical),
      additional ±60 ppm for first weeks
      Relative humidity: ±2.4 % rH (typical at 20 °C, 30 % rH)
      Temperature: ±0.5 °C (typical at 20 °C)
      VOC*: ±15 % of reading (typical)
      *VOC sensor is tuned for typical IAQ Mix of 22 VOCs as
      defined by Mølhave et al. (1997)
      PM:
      0…100 μg/m3:
      PM2.5: ±15 μg/m3 (at 25 °C ±5 °C)
      PM1/PM10*: ±15 μg/m3 (at 25 °C ±5 °C)
      100…1000 μg/m3:
      PM2.5: ±15 % (at 25 °C ±5 °C)
      PM1/PM10*: ±15 % (at 25 °C ±5 °C)
      *PM1 and PM10 values are calculated from PM2.5 measurement reading with the default particle distribution.
      Measuring elements CO2: Non-dispersive infrared (NDIR)
      VOC: Complementary Metal Oxide
      Semiconductor (CMOS)
      PM: Laser-based light scattering particle sensing
      Temperature: Integrated to CMOS
      Relative humidity: Thermoset polymer capacitive
      sensing element
      Measuring units CO2: ppm
      Relative humidity: % rH
      Temperature: °C
      VOC CO2eq: ppm
      TVOC: ppm, μg/m3
      PM1/2.5/10: μg/m3
      Calibration (CO2) Automatic self-calibration, ABC LogicTM
      Supply voltage 24 VDC/VAC ±10 %
      Output signal 1–4 0…10 V (optional 2…10 V / 0…5 V, display or configuration tool required)
      Optional 4…20 mA
      Linear to selected measurement (CO2, VOC, PM, rH or Temp)
      Operating temperature 0…50 °C
      Protection standard IP20

      Siro-Series_Datasheet-2.0

      Download

      Manual

      Download
      Copyright © 2025 Parshvi Technology (India) Private Limited. All Rights Reserved.