Comet T6340 – Temperature, Humidity, CO2 Transmitter with RS232 Interface

• Built-in relative humidity
• Atmospheric pressure sensors
• Measured 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 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 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 the 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.

Transmitter contains a microprocessor-based control circuitry in a durable plastic case with connection terminals and temperature and 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 a non-aggressive environment.

Measured temperature, humidity, and CO2 concentration values are converted to RS232 serial output.

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.