* Measurement of the concentration of volatile organic compounds (VOCs) harmful to heath, contained in the air in closed rooms to improve the comfort of people staying there
* Configurable architecture enabling use in many welds and applications (for industrial, office and residential environments, inside buildings, e.g. HVAC installations, warehousing, production, transport, food industry, pharmacy, medicine, gardening, laboratories and others)
* Probe integrated with the housing
* High-quality, digital VOC and realitive humidity and temperature sensors from the renowned Sensirion company
* Outputs: current 0/4÷20 mA, voltage 0/2÷10 V or Rs485 interface
* Programmable ranges of processing of measured values
* LCD display with keyboard (optional) enablin parameter configuration
* Configuration of parameters from the keyboard, via the Rs485 or PRG port (AR955
or AR956 programmer) and the free ARsoft-CFG computer program enabling quick setting and copying of all configuration parameters
* Temperature compensation for humidity and high long-term stability of measurements
* Calculation of dew/frost point [°C], absolute humidity [g/m3] (calculations for atmospheric pressure 1013 hPa) with the possibility of linking the calculated values to the analog output
* IP65 protection rating provided by the housing, increasing operational reliability thanks to high resistance to water and dust ingress and surface condensation of water vapor inside the device, IP20 protection rating for probe
Technical Data
Sensor SGPC3 and SHT31, an ABS cover (slot width 1mm)
Measurement range 0÷9,999 ppm, 10÷95 %RH, 5÷50 °C
Measurement accuracy VOC typically ±15% of the measured value (maximum ±40%)
Humidity(RH) typically ±2 %RH (maximum ±3 %RH)
Temperature(T) typically ±0.3°C (maximum ±0.4°C)
Additional errors repeatability ±0,1 %RH, ±0,1 °C long-term stability
< 0,25 %RH / year, < 0.03 °C / year
VOC: <2,5 % / year (with VOC<30 ppm)
hysteresis (RH) ±0,8 %RH
Measuring period 1s for humidity and temperature measurements, 2s for VOC
Response time (63%) 8s (required air ow > 3,6km/h; 1m/s)
Display (optional) LCD, 4 digits 10 mm
Outputs current (active) 2 x 0/4÷20 mA, load R [Ω]< (U - 5)V / 22 mA 0 sup
voltage 2 x 0/2÷10 V, load I <4,5 mA (R > 2,5 kΩ) 0 w
digital (not separated) RS485, MODBUS-RTU (slave)
Power supply for the 0/4÷20 mA 12÷36 Vdc , current consumption: max. ~30 mA + (IO1+IO2) for the 0/2÷10 V 18÷30 Vdc, current consumption without outputs load: max.~25 mA version with RS485 9÷28 Vac or 9÷36 Vdc, current consumption: max. ~40 mA
Operating conditions air and neutral gases, do not pour water on the measurement probe
temperature and humidity 5÷50 °C, 10÷95 %RH (no condensation)
Installation Data
Dimensions 58x94x35 mm (probe: 45 mm, Φ15 mm)
Material polycarbonate (probe sheath: ABS)
