Comet T5441 – CO2 Concentration Transmitter with RS485 Interface, External Carbon Dioxide Probe, Cable 1m

• ​The transmitters 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 following humidity expression: dew point temperature, absolute humidity, specific humidity, mixing ratio, and specific enthalpy
• Measured values are displayed on a dual-line LCD display

Sensors and regulators of temperature, humidity, barometric pressure and CO2 concentration convert measured values to digital serial output the RS485 and RS232 link parameters. These devices support communication protocols Modbus RTU and protocol compatible with standard Advantech-ADAM. By means of this communication via serial line, the measured values can be read and some settings changed. Parameters can be set from the regulator´s keypad or from a computer.

Computerized design ensures maximum long-term stability, user adjustment, and fail indication. This concept allows the user to choose a measuring range for each output. Moreover, there is an option to set up computed values such as dew point, absolute humidity, specific humidity, mixing ratio, and specific enthalpy. State-of-the-art capacitive polymer sensor ensures excellent long-term calibration stability and inertia against water and condensation. Devices are designed for the measurement of air without aggressive ingredients.

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 the creation of a healthy interior climate.

Method of CO2 sensor multipoint calibration leads to excellent accuracy measurements of CO2 in the entire 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 the aging of the sensor. The sensor is resistant against the pollution and provides maintenance-free operation and excellent long-term stability.

Serial output RS232 – transmitter works with ModBus RTU communication protocol or with Advantech ADAM compatible protocol. Protocol is user selectable in special configuration mode by means of the PC. Serial link enables to read actual readings and modify transmitter configuration. Instrument works always in slave mode, i.e. responds only to master device query. Transmitters have the address space available from 1 to 255. Communication speed is 110 to 115200Bd.

Applications

• Building HVAC management
• Building HVAC automation
• Warehouses
• Glasshouses
• Manufacturers
• Museums, archives, galleries
• Air-conditioned rooms
• Weather stations

• 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.
• Sensor Reader 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.