Temperature, humidity, CO2 level sensor with two output relays.
Included in delivery:
- H6420 sensor
- Traceable calibration certificate
- Quick start manual
- Technical support at discussion forum
Transmitter is also equipped with three alarm LEDs:
Green LED shines - CO2 concentration 0 to 1000 ppm
Yellow LED shines - CO2 concentration 1001 to 1200 ppm
Red LED shines - CO2 concentration 1201 ppm and more
| Technical parameters | Value |
|---|---|
| Output | RS485 |
| Measured Value | CO2 + Temperature + Relative Humidity |
| Construction Type | Ambient Air |
| Design | Industrial |
| Temperature Measuring Range | -30 to 60 °C |
| Relay Output | Yes |
| Two-State Input | No |
| Lcd Display | Yes |
| PoE | No |
| Maximum switching voltage, current, power of relay output | 50V, 2A, 60VA |
| Audible alarm | from built-in beeper - switchable |
| Range of CO2 concentration measurement | 0 to 2000ppm |
| Accuracy of CO2 concentration measurement | ±(50ppm +2% from reading) at 25°C and 1013hPa |
| Optional range of CO2 concentration measurement | 0 to 10000ppm ±(100ppm +5% from reading) at 25°C and 1013hPa |
| Relative humidity range | 0 to 100% |
| Accuracy of relative humidity measurement | ±2.5% relative humidity from 5 to 95% at 23°C |
| Accuracy of temperature output | ±0.4°C |
| Available temperature units | degrees Celsius, Fahrenheit |
| Accuracy and range of dew point temperature output - for more details see graphs |
±1.5°C at ambient temperature T<25°C and RH>30% range -60 to +80 °C |
| Accuracy and range of absolute humidity output |
±1.5g/m3 at ambient temperature T < 25°C range 0 to 400 g/m3 |
| Accuracy and range of specific humidity output |
±2g/kg at ambient temperature T < 35°C range 0 to 550 g/kg |
| Accuracy and range of mixing ratio output |
±2g/kg at ambient temperature T < 35°C range 0 to 995 g/kg |
| Accuracy and range of specific enthalpy output |
±3kJ/kg at ambient temperature T < 25°C range: 0 to 995 kJ/kg |
| Measuring interval of CO2 | 15s |
| Temperature operating range | -30 to +60°C |
| Filtering ability of sensor cover | 0.025mm - filter with stainless steel mesh |
| Communication protocol | ModBus RTU, ARION and Advantech ADAM compatible protocol |
| Communication speed | 110 to 115200 Bd |
| IP protection | IP30 electronics, IP40 sensors |
| Power | 9-30Vdc, power consumption approximately 1W |
| Dimensions | 136 x 213 x 45 mm (W x H x D), stem length 75 mm |
| Weight | approximately 360g |
MY 1587 
US 1557 
CN 198 
AP 160 
AU 85 
DE 59 
CA 48 
SG 45 
