Descripción
Comet H6420 Temperature, Humidity, CO2 Transmitter with Two Relay and RS485 Outputs
- CO2 sensor multipoint calibration leads to an excellent accuracy measurements of CO2 in the entire of operating temperature range
- Measured temperature and relative humidity values are also converted to other humidity interpretation
- Dew point temperature
- Absolute humidity
- Specific humidity
The CO2 – carbon dioxide level is recently regarded as an important parameter that substantially determines the quality of the interior climate. Especially in buildings where many people gather, such meeting rooms, hospitals, schools, cinemas, theatres and care centres. With the help of CO2 sensor engineers, technical advisors, environmental experts and health specialists can optimize the ventilation for creation of a healthy interior climate.
Method of CO2 sensor multipoint calibration leads to an excellent accuracy measurements of CO2 in the entire of operating temperature range. With this sensor is the device able to meet the demanding requirements for outdoor use. The measurement principle is based on the NDIR principle with dual wavelength, which automatically compensates for aging of the sensor. The sensor is resistant against the pollution and provides maintenance-free operation and excellent long-term stability.
Measured temperature and relative humidity values are also converted to other humidity interpretation – dew point temperature, absolute humidity, specific humidity, mixing ratio or specific enthalpy. Degrees Celsius and Fahrenheit are user selectable.
Applications
- Building HVAC management
- Climate technology
- Schools, universities
- Meeting rooms, hospitals, cinemas, theatres
- Weather stations
Transmitter is equipped with two relay outputs for alarm indication or control of external devices. Each relay can be assigned to any measured or computed value. For each relay setting of delay, hysteresis, audible alarm is enabled.
Parameters are easy adjustable from regulator keyboard or from the computer.
Transmitter contains a microprocessor based control circuitry in a durable plastic case with connection terminals and temperature an relative humidity sensors in a filter with stainless steel mesh. The CO2 concentration sensor is built inside the case.
Large dual line LCD is an advantage. Display is possible to switch off. Computerized design ensures maximum long term stability and failure indication.
State-of-the-art capacitive polymer sensor ensures excellent calibration long term stability, inertia against water and condensation. Transmitter is designed for use in non-aggressive environment.
Software
- Comet Database
- Complex solution for data acquisition and analysing. Easy to use and high flexible database software for Comet Transmitters and Regulators.
- Sensor RS485/232 utility
- Allows communication of sensors with RS485/RS232 output and sending data to Comet Database.
- T-Sensor software
- Free configuration utility for Comet Transmitters and Regulators.
- SensorReader software
- Basic data acquisition utility for Comet Transmitters and Regulators. Software is free for download
Manufacturer Specs
| Comet H6420 Specifications | |
| 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 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 |
| Warranty | 3 years |
Tech Specs
Test Equipment General Attributes |
|
|---|---|
| Product Weight | 1 LBS |
| Shipping Weight | 1.15 LBS |
| Country of Origin | Czech Republic |
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