CO2 Temperature & Humidity Transmitter (Indoor)

Integrated 3 sensors in 1 device with optional LCD display
Measuring temperature, humidity and carbon dioxide
2 analog outputs or Modbus RS-485
Optional analog output + RS-485
Quick easy installation and maintenance due to well designed
Cost-efficient and reliable
Data can be logged and transferred to PC via RS-485 function link free software
Specifications:
Display: LCD module without backlight
Display readout: Double line character (Up: CO2; Down: T & H take turns)
Digit: CO2: 4 digits; T & H: 3 digits & 1 decimal
Digit height: 17.84 mm
Input: NDIR sensor (CO2) / MEMS sensor (Temp. & humidity)
Measuring range: 0...2000 PPM / 0...50℃ / 0...100%RH (Non-condensing)
Analog output: 0...5 V / 0...10 V / 4...20 mA
Modbus: RS-485
Signal connection: 3-wire
Load resistance: Voltage output: ≧10 KΩ / Current output: ＜250 Ω
Warm-up time: ＜ 2 min; Stable time 20 min
Temp. influence: T & H: Max. -0.15%RH/℃ (0...80°C)
Response time: CO2: t90 ＜ 2 min / T & H: t63 (15...45°C / 33...75%RH) ≦ 10 sec
Sampling time: CO2: About 6 sec; T & H: About 3 sec
Data logger: Via RS-485 by using eyc free software
Accuracy (at +25°C; DC 24 V; 101.3 kPa): CO2 ±40 PPM±3% of reading / Temperature ±0.5°C / Humidity ±5%RH (30...80% RH)
Medium: Air
Operating Temp. / Humid.: T&H: 0...50°C / 0...100%RH (Non-condensing)
Operating Temp. / Humid.: CO2: 0...50°C / 0...85%RH
Storage temperature: -20...+ 60℃
Power supply: DC 12...36 V & AC 24 V ±10%
Current consumption: DC: 150 mA / AC: 120 mA
Starting current: DC 24 V: 250 mA / DC 12 V: 550 mA; AC 24 V: 230 mA / AC 12 V: 250 mA
Electrical connection: Analog & communication: 4P Connector
Installation: Indoor and Wall mount
IP rating: IP20