COMET system - Advanced features - Carbon dioxide

For 30 years COMET system has been producing advanced measuring technology for environmental monitoring in industry, health and research, agriculture, IT datacenters and metrology.
We are an authorized distributor of the Czech producer of dataloggers, thermometers, sensors and monitoring systems COMET. We provide sales and calibration of most products of this brand. COMET system products can be purchased directly in our e-shop including calibration.


Datalogger Comet U3430 with built-in temperature, humidity and CO2 sensors
In stock
375,37 € excl. VAT
454,20 € incl. VAT
454,20 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -20 °C |
Humidity measurement range | 0 to100% |
CO2 measurement range | 0 to 5000 ppm |
The datalogger is designed to record temperature, humidity and CO2. When the set limits are exceeded, alarms are indicated by LED, LCD and…


Datalogger Comet U4440 for measuring temperature, humidity, CO2 and atmospheric pressure
In stock
446,53 € excl. VAT
540,30 € incl. VAT
540,30 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -20 °C |
Humidity measurement range | 0 to100% |
CO2 measurement range | 0 to 5000 ppm |
The datalogger is designed to record temperature, humidity, atmospheric pressure and CO2. When the set limits are exceeded, alarms are…


Temperature, humidity, CO2 multilogger with barometer Comet M1323
Upon request
930,24 € excl. VAT
1 125,59 € incl. VAT
1 125,59 € incl. VAT
Temperature range (max) | 600 °C, depends on the type of sensor |
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Temperature range (min) | -200 °C, depends on the type of sensor |
Humidity measurement range | depends on the type of sensor |
CO2 measurement range | 2000 ppm |
Multilogger Comet M1323 is maximally equipped for professional use. It can measure temperature, humidity, CO2, barometric pressure, voltage…

WiFi temperature, humidity, pressure and CO2 sensor Comet W4710
In stock
536,08 € excl. VAT
648,66 € incl. VAT
648,66 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to 95% |
CO2 measurement range | 5000 ppm |
The Comet W4710 WiFi sensor is versatile with internal sensors for measuring temperature, relative humidity, barometric pressure and CO2.…


Datalogger Comet U8410 with built-in CO2 sensor
In stock
339,40 € excl. VAT
410,67 € incl. VAT
410,67 € incl. VAT
CO2 measurement range | 5000 ppm |
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The datalogger is designed for CO2 from a built-in sensor. When the set limits are exceeded, alarms are indicated by LED, LCD and…


Comet T5141 CO2 sensor with external probe and 4-20mA output
Upon request
719,57 € excl. VAT
870,68 € incl. VAT
870,68 € incl. VAT
CO2 measurement range | 10000 ppm |
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The Comet T5141 sensor is designed to measure CO2 concentration using an external probe on a cable. The CO2 measurement is based on the…


Comet U4440 IoT temperature, humidity, CO2 and pressure data logger
In stock
from
729,96 € excl. VAT
from 883,25 € incl. VAT
from 883,25 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -20 °C |
Humidity measurement range | 0 to100% |
CO2 measurement range | 5000 ppm, 0 to 5000 ppm |
Comet U4440M and U4440G are IoT wireless data loggers with built-in GSM modem. After purchasing a SIM card, immediate connection to the…


Datalogger Comet U8410 IoT with built-in CO2 sensor
In stock
from
651,21 € excl. VAT
from 787,96 € incl. VAT
from 787,96 € incl. VAT
CO2 measurement range | 5000 ppm |
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The GSM datalogger is designed to record CO2 from a built-in sensor. In case of exceeding the set limits, it allows sending alarm SMS and…


Measuring and recording control panel with alarms Comet MS6D
In stock
1 175,29 € excl. VAT
1 422,10 € incl. VAT
1 422,10 € incl. VAT
Temperature range (max) | 1800 °C, depends on the type of sensor |
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Temperature range (min) | -200 °C, depends on the type of sensor |
Humidity measurement range | 0 to100%, depends on the type of sensor |
CO2 measurement range | depends on the type of sensor |
The Comet MS6D monitoring panel offers measurement of temperature, humidity, pressure, CO2, voltage, current, pulse and other variables. It…


Comet M1322 temperature, humidity and CO2 multilogger
Upon request
865,48 € excl. VAT
1 047,23 € incl. VAT
1 047,23 € incl. VAT
Temperature range (max) | 600 °C, depends on the type of sensor |
---|---|
Temperature range (min) | -200 °C, depends on the type of sensor |
Humidity measurement range | depends on the type of sensor |
CO2 measurement range | 2000 ppm |
Professional multilogger Comet M1322 for measuring, temperature, humidity, CO2, voltage or current. For these purposes, the datalogger is…

Comet T5441 CO2 sensor with external probe and RS485 output
Upon request
749,15 € excl. VAT
906,47 € incl. VAT
906,47 € incl. VAT
CO2 measurement range | 10000 ppm |
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The Comet T5441 sensor is designed to measure CO2 concentration using an external probe on a cable. The CO2 measurement is based on the…

Comet T5440 CO2 sensor with RS485 output
Upon request
313,41 € excl. VAT
379,23 € incl. VAT
379,23 € incl. VAT
CO2 measurement range | 2000 ppm |
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The Comet T5440 sensor is designed to measure the concentration of carbon dioxide CO2 using a built-in sensor. The CO2 measurement is based…

Comet T5341 CO2 sensor with external probe and RS232 output
Upon request
711,57 € excl. VAT
861 € incl. VAT
861 € incl. VAT
CO2 measurement range | 10000 ppm |
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The Comet T5341 sensor is designed to measure CO2 concentration using an external probe on a cable. The CO2 measurement is based on the…

Comet T5340 CO2 sensor with RS232 output
Upon request
286,63 € excl. VAT
346,82 € incl. VAT
346,82 € incl. VAT
CO2 measurement range | 2000 ppm |
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The Comet T5340 is designed to measure the concentration of CO2 in the air using a built-in sensor. The CO2 measurement is based on the…


Comet H5521 CO2 sensor with Ethernet output and two relays
Immediately in stock
832,70 € excl. VAT
1 007,57 € incl. VAT
1 007,57 € incl. VAT
CO2 measurement range | 10000 ppm |
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The Comet H5521 sensor is designed to monitor CO2 concentration using an external probe on a cable. The CO2 measurement is based on the…


Comet H5524 CO2 sensor with Ethernet output and two relays
Upon request
396,96 € excl. VAT
480,32 € incl. VAT
480,32 € incl. VAT
CO2 measurement range | 2000 ppm |
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The Comet H5524 sensor is designed to monitor CO2 using a built-in sensor. The CO2 measurement is based on the NDIR principle with dual…

Comet T5140 CO2 sensor with 4-20mA output
In stock
289,43 € excl. VAT
350,21 € incl. VAT
350,21 € incl. VAT
CO2 measurement range | 2000 ppm |
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The Comet T5140 sensor is designed to measure CO2 concentration using a built-in sensor. The CO2 measurement is based on the NDIR principle…

Comet T5240 CO2 sensor with 0-10V output
Upon request
289,43 € excl. VAT
350,21 € incl. VAT
350,21 € incl. VAT
CO2 measurement range | 2000 ppm |
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The Comet T5240 sensor is designed to measure the concentration of carbon dioxide CO2 using a built-in sensor. The CO2 measurement is based…


Comet T5241 CO2 sensor with external probe and 0-10V output
Upon request
719,57 € excl. VAT
870,68 € incl. VAT
870,68 € incl. VAT
CO2 measurement range | 10000 ppm |
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The Comet T5241 sensor is designed to measure CO2 concentration using an external probe on a cable. The CO2 measurement is based on the…


CO2 sensor Comet T5145 for air duct with 4-20mA output
In stock
307,82 € excl. VAT
372,46 € incl. VAT
372,46 € incl. VAT
CO2 measurement range | 2000 ppm |
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The Comet T5145 sensor is designed to measure CO2 concentration in the air duct, stem length 130mm. The CO2 measurement is based on the…


Comet T5245 CO2 sensor for air duct with 0-10V output
Upon request
305,02 € excl. VAT
369,07 € incl. VAT
369,07 € incl. VAT
CO2 measurement range | 2000 ppm |
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The Comet T5245 sensor is designed to measure CO2 concentration in the air duct, stem length 130mm. CO2 measurement is based on the NDIR…

Indoor CO2 and temperature sensor Comet T8148 with 4-20mA outputs
In stock
311,81 € excl. VAT
377,29 € incl. VAT
377,29 € incl. VAT
Temperature range (max) | 50 °C |
---|---|
Temperature range (min) | -10 °C |
CO2 measurement range | 2000 ppm |
The Comet T8148 indoor sensor is designed to measure CO2 concentration and temperature indoors and for energy management in buildings. The…

Comet T8248 indoor CO2 and temperature sensor with 0-10V outputs
Upon request
311,81 € excl. VAT
377,29 € incl. VAT
377,29 € incl. VAT
Temperature range (max) | 50 °C |
---|---|
Temperature range (min) | -10 °C |
CO2 measurement range | 2000 ppm |
The Comet T8248 indoor sensor is designed to measure CO2 concentration and temperature indoors and for energy management in buildings. The…

Comet T8448 indoor CO2 and temperature sensor with RS485 output
Upon request
370,18 € excl. VAT
447,92 € incl. VAT
447,92 € incl. VAT
Temperature range (max) | 50 °C |
---|---|
Temperature range (min) | -10 °C |
CO2 measurement range | 2000 ppm |
The Comet T8448 indoor sensor is designed to measure CO2 concentration and temperature indoors and for energy management in buildings. The…

Temperature, humidity and CO2 sensor and controller Comet H6420 with RS485 output
Upon request
492,50 € excl. VAT
595,93 € incl. VAT
595,93 € incl. VAT
Temperature range (max) | 80 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
CO2 measurement range | 2000 ppm |
The Comet H6420 is designed to measure CO2 concentration, temperature and humidity using built-in sensors. The CO2 measurement is based on…

Temperature, humidity and CO2 sensor and controller Comet H6320 with RS232 output
Upon request
441,34 € excl. VAT
534,02 € incl. VAT
534,02 € incl. VAT
Temperature range (max) | 80 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
CO2 measurement range | 2000 ppm |
The Comet H6320 is designed to measure CO2 concentration, temperature and humidity using built-in sensors. The CO2 measurement is based on…

Comet H5421 CO2 sensor and controller with external probe and RS485 output
Upon request
813,51 € excl. VAT
984,35 € incl. VAT
984,35 € incl. VAT
CO2 measurement range | 10000 ppm |
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The Comet H5421 is designed to measure CO2 concentration using an external probe on a cable. The CO2 measurement is based on the NDIR…

Comet H5424 CO2 sensor and controller with RS485 output
Upon request
370,98 € excl. VAT
448,89 € incl. VAT
448,89 € incl. VAT
CO2 measurement range | 2000 ppm |
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The Comet H5424 is designed to measure CO2 concentration using a built-in sensor. The CO2 measurement is based on the NDIR principle with…

Comet H5321 CO2 sensor and controller with external probe and RS232 output
Upon request
772,74 € excl. VAT
935,02 € incl. VAT
935,02 € incl. VAT
CO2 measurement range | 10000 ppm |
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The Comet H5321 is designed to measure CO2 concentration using an external probe on a cable. The CO2 measurement is based on the NDIR…

Comet H5324 CO2 sensor and controller with RS232 output
Upon request
339,40 € excl. VAT
410,67 € incl. VAT
410,67 € incl. VAT
CO2 measurement range | 2000 ppm |
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The Comet H5324 is designed to measure CO2 concentration using a built-in sensor. The CO2 measurement is based on the NDIR principle with…

Comet T6340 temperature, humidity and CO2 sensor with RS232 output
Upon request
348,59 € excl. VAT
421,79 € incl. VAT
421,79 € incl. VAT
Temperature range (max) | 50 °C |
---|---|
Temperature range (min) | -10 °C |
Humidity measurement range | 5 to 95 % |
CO2 measurement range | 2000 ppm |
The Comet T6340 sensor is designed to measure temperature, relative humidity and CO2 concentration using built-in sensors. The CO2…


Comet H6520 temperature, humidity and CO2 sensor with Ethernet output and two relays
Upon request
507,70 € excl. VAT
614,32 € incl. VAT
614,32 € incl. VAT
Temperature range (max) | 80 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
CO2 measurement range | 2000 ppm |
The Comet H6520 is designed to monitor temperature, humidity and CO2 using a built-in sensor. The CO2 measurement is based on the NDIR…

Comet T6440 temperature, humidity and CO2 sensor with RS485 output
Upon request
418,15 € excl. VAT
505,96 € incl. VAT
505,96 € incl. VAT
Temperature range (max) | 50 °C |
---|---|
Temperature range (min) | -10 °C |
Humidity measurement range | 5 to 95 % |
CO2 measurement range | 2000 ppm |
The Comet T6440 sensor is designed to measure temperature, relative humidity and CO2 concentration using built-in sensors. The CO2…


Web Sensor Comet T6641 PoE temperature, humidity and CO2 with Ethernet output
Upon request
923,05 € excl. VAT
1 116,89 € incl. VAT
1 116,89 € incl. VAT
Temperature range (max) | 105 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 5 to 95 % |
CO2 measurement range | 10000 ppm |
Web Sensor Comet T6641 with external combined temperature and humidity probe and CO2 probe. The CO2 measurement is based on the NDIR…


Comet T6640 PoE thermometer, hygrometer and CO2 detector with Ethernet output
In stock
468,92 € excl. VAT
567,39 € incl. VAT
567,39 € incl. VAT
Temperature range (max) | 80 °C |
---|---|
Temperature range (min) | -20 °C |
Humidity measurement range | 5 to 95 % |
CO2 measurement range | 2000 ppm |
The Comet T6640 sensor measures temperature, relative humidity and CO2 concentration in the air. It can also calculate dew point, absolute…


Web Sensor Comet T5641 PoE CO2 sensor with Ethernet output
Upon request
802,32 € excl. VAT
970,81 € incl. VAT
970,81 € incl. VAT
CO2 measurement range | 10000 ppm |
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The Web Sensor Comet T5641 is designed to measure CO2 concentration using a probe on a cable. The cable length is 1m as standard, 2 or 4m…


Web Sensor Comet T5640 PoE CO2 sensor with Ethernet output
Upon request
363,78 € excl. VAT
440,17 € incl. VAT
440,17 € incl. VAT
CO2 measurement range | 2000 ppm |
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The Web Sensor Comet T5640 is designed to measure CO2 concentration using a built-in sensor. The CO2 measurement is based on the NDIR…


Web Sensor Comet T6545 temperature, humidity and CO2 with Ethernet output
Upon request
470,92 € excl. VAT
569,81 € incl. VAT
569,81 € incl. VAT
Temperature range (max) | 60 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
CO2 measurement range | 2000 ppm |
The Web Sensor Comet T6545 is designed for installation in an air duct and has built-in sensors for CO2 concentration, relative humidity…


Web Sensor Comet T6541 temperature, humidity and CO2 with Ethernet output
Upon request
883,47 € excl. VAT
1 069 € incl. VAT
1 069 € incl. VAT
Temperature range (max) | 105 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 5 to 100% |
CO2 measurement range | 10000 ppm |
Web Sensor Comet T6541 with external combined temperature and humidity probe and CO2 probe. The CO2 measurement is based on the NDIR dual…


Web Sensor Comet T6540 temperature, humidity and CO2 with Ethernet output
Upon request
429,34 € excl. VAT
519,50 € incl. VAT
519,50 € incl. VAT
Temperature range (max) | 80 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 5 to 95 % |
CO2 measurement range | 2000 ppm |
Web Sensor Comet T6540 with built-in sensors for CO2 concentration, relative humidity and temperature. The CO2 measurement is based on the…


Web Sensor Comet T5541 CO2 sensor with Ethernet output
Upon request
762,34 € excl. VAT
922,43 € incl. VAT
922,43 € incl. VAT
CO2 measurement range | 10000 ppm |
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Web Sensor Comet T5541 with probe on cable to measure CO2 concentration. Cable length 1m as standard, 2 or 4m cable can be ordered at extra…


Web Sensor Comet T5540 CO2 sensor with Ethernet output
Upon request
339 € excl. VAT
410,19 € incl. VAT
410,19 € incl. VAT
CO2 measurement range | 2000 ppm |
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The Web Sensor Comet T5540 is designed to measure CO2 concentration using a built-in sensor. The CO2 measurement is based on the NDIR…

Web Sensor Comet T6445 temperature, humidity and CO2 with RS485 output
Upon request
441,34 € excl. VAT
534,02 € incl. VAT
534,02 € incl. VAT
Temperature range (max) | 80 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 5 to 95 % |
CO2 measurement range | 2000 ppm |
The Comet T6445 Web Sensor with built-in sensors is designed to measure CO2, relative humidity and temperature in the air duct. The CO2…


Web Sensor Comet T5545 CO2 to air duct with Ethernet output
Upon request
370,98 € excl. VAT
448,89 € incl. VAT
448,89 € incl. VAT
CO2 measurement range | 2000 ppm |
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The Web Sensor Comet T5545 is designed for installation in an air duct and for measuring the CO2 concentration using a built-in sensor. The…

WiFi CO2 sensor Comet W5714
In stock
458,13 € excl. VAT
554,34 € incl. VAT
554,34 € incl. VAT
CO2 measurement range | 5000 ppm |
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The wireless WiFi CO2 sensor from the Czech manufacturer Comet system is ideal for placement in an area that is covered by a WiFi signal.…


Comet U8415 CO2 concentration monitor
Upon request
256,25 € excl. VAT
310,06 € incl. VAT
310,06 € incl. VAT
CO2 measurement range | 5000 ppm |
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The Comet U8415 is designed to monitor and indicate the concentration of CO2 in indoor environments (schools, conference halls, hospitals,…