Comet H5421 – CO2 Concentration Transmitter w/RS485 and Two Relay Outputs

• Regulators with two-state inputs, with relay output and serial output RS485/RS232
• Measured values – temperature, relative humidity, computed values and CO2 concentration
• Versions with the stem, the external probe on the cable and with external probe into the pressure environments of up to 2,5 MPa
• Two-state inputs

The regulators are designed for online measurement of temperature (°C or °F), relative humidity, and carbon dioxide concentration of air without aggressive ingredients. Measured temperature and relative humidity are recomputed to the following humidity expression: dew point temperature, absolute humidity, specific humidity, mixing ratio, and specific enthalpy.

The device is equipped with two relay outputs for alarming or controlling external devices. It is possible to assign any input value to each relay, to set comparing limit, delay, hysteresis, acoustic alarm or change its status by far control with using of Modbus communication protocol. The device communicates via link RS232.

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 as 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 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 to pollution and provides maintenance-free operation and excellent long-term stability.

Software

• Comet Database
• Complex solution for data acquisition and analysis. 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.
• 3rd party software
• ControlWeb, TIRS.NET, LabVIEW etc. Support for this software is provided by the 3rd party companies.