- Integrated 3 sensors in 1 device with optional LCD display
- Measuring temperature, humidity and carbon dioxide
- 2 analog outputs or Modbus RS-485
- Optional analogue 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
Thông số kỹ thuật
- display
+ display : LCD module without backlight
+ display readout : double line character ( up : CO2；down : temperature & humidity take turns )
+ digit : CO2 : 4 digits；T & H : 3 digits & 1 decimal
+ digit height : 17.84 mm
- input
+ CO2 : NDIR sensor
+ temperature & humidity : MEMS sensor
- measuring range
+ CO2 : 0 ... 2000 PPM
+ temperature : 0 ... 50 ℃
+ humidity : 0 ... 100 %RH ( non-condensing )
- output
+ analogue output : 0 ... 5 V / 0 ... 10 V / 4 ... 20 mA
+ Modbus : RS-485
+ signal connection : 3-wire
+ load resistance ( voltage ) : voltage output : ≧ 10KΩ ; current output : < 250 Ω
+ warm-up time : < 2 min.，stable time 20 mins.
+ temperarture influence : T & H : max. -0.15 % RH / ℃ ( 0 ℃ to 80 ℃)
+ response time :
+ CO2 : t 90 < 2 min.
+ T & H : t 63 ( 15 ℃ to 45 ℃ / 33 to 75 % RH ) ≦ 10 sec.
+ sampling time : CO2 : about 6 secs. ； T & H : about 3 secs.
+ data logger : via RS-485 by using eyc free software
- accuracy ( at +25 °C ；V = 24 VDC；101.3kPa )
+ CO2 : ± 40 PPM ± 3 % of reading
+ temperature : ± 0.4 ℃
+ humidity : ± 3 % RH ( 20 ... 90 % RH )
- environment
+ media measured : air
+ working temp. / humidity for T & H : 0 ... 50 ℃ / 0 ... 95 % ( non-cond. )
+ working temp. / humidity for CO2 : 0 ... 50 ℃ / 0 ... 85 %
+ storage temperature : -20 ... + 60 ℃
- electrical
+ power supply : DC 12 ... 36 V & AC 24 V ± 10 %
+ current consumption : DC 24V : 150 mA；AC 12 V : 120 mA
+ starting current : DC 24V : 250 mA；DC 12 V : 550 mA；AC 24V : 230 mA ; AC 12V : 250 mA
+ electrical connection : analogue & communication : 4P connector
- installation : wall
- protection
+ protection degree : IP 20
+ electric protection : polarity protection, short circuit
- certification : CE
- material
+ case : PC ( PC - 110 ) ( UL94V-2 )
+ weigjt : 100 g