H6520 Remote CO2 Concentration, Temperature, Humidity Transmitter, Ethernet Interface, 2 Relay Outputs

H6520

Temperature, humidity, CO2 level transmitter with two output relays. Supports humidity index readings.

The H6520 sensor is designed for online monitoring of air temperature, relative humidity and carbon dioxide and does not contain aggressive substances. Two relay outputs allow control of other equipment.

Highly accurate capacitive polymer sensors ensure excellent long-term calibration stability and ultimate accuracy. Measurements can also be converted to other humidity interpretations: dew point temperature, absolute humidity, specific humidity, mixing ratio, specific heat.

CO2 measurement is based on a two-source, two-beam process. Long-term stable CO2 measurements are ensured by a proven non-dispersive infrared (NDIR) CO2 measurement cell. A unique patented auto-calibration procedure compensates for IR source aging, ensuring high reliability, long-term stability and eliminating the need for periodic recalibration in the field.

The CO2 concentration can be shown on the display or signaled by colored LEDs.

Measurement data can be processed and analyzed in the following ways:

Online Processing on COMET Cloud
Processing with COMET Database Software
Integrating data into third-party systems

Warranty: 3 years

Measurement parameters
Temperature
Relative Humidity
Count (Dew Point...)
carbon dioxide CO2
Temperature Sensor
Measurement range: -30 to +80 °C
Measurement accuracy: ±0.4°C
Resolution: 0.1 °C
Humidity Sensor
Measurement range: 0 to 100 % relative humidity
Measurement accuracy: ±2.5 % relative humidity (5 to 95 % at 23 °C)
Resolution: 0.1% Relative Humidity
outdoor spot
Measurement range: -60 to +80 °C
Measurement accuracy: ±1.5 °C at ambient temperature T 30 %.
Resolution: 0.1 °C
Carbon Dioxide Sensor
Measurement range: 0 to 2000 ppm
Measurement Accuracy: ± (50ppm + 2% of reading), Temperature 25°C, Air Pressure 1013hPa
Resolution: 1 ppm
Relay Output
Quantity: 2
Maximum voltage: 50 V
Maximum current: 2 A
Maximum power: 60 VA
General Technical Data
Operating temperature: -30 to +60 °C
Channel: Built-in temperature, humidity and carbon dioxide sensors
Measurements: Dew point, Absolute humidity, Specific humidity, Mixing ratio, Specific heat
Audible alarm: via built-in buzzer - switchable
Output: Ethernet
Measurement interval: 2 s; CO2 15 s
Available temperature units: degrees Celsius, degrees Fahrenheit
Communication protocol: WWW, Modbus TCP, SNMPv1, SOAP, XML
Alarm protocols: E-mail (supports SMTP authentication), SNMP Trap, Syslog
Battery: 9-30 Vdc
Protection level: IP30
Dimensions: 136 x 213 x 45 mm; stem length 75 mm
Weight: approx. 340 g
Warranty: 3 years


  • H6520
  • Operator's Manual
  • Traceable calibration certificate
  • Free software for configuring the transmitter TSensor
  • COMET Cloud 3 Months License

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