COMET system - Gas calibration (outside accreditation) - without calibration

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
374,18 € excl. VAT
452,76 € incl. VAT
452,76 € 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
445,11 € excl. VAT
538,58 € incl. VAT
538,58 € 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
927,28 € excl. VAT
1 122,01 € incl. VAT
1 122,01 € 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 |
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
534,37 € excl. VAT
646,59 € incl. VAT
646,59 € 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
338,31 € excl. VAT
409,36 € incl. VAT
409,36 € 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
717,27 € excl. VAT
867,90 € incl. VAT
867,90 € 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
727,63 € excl. VAT
from 880,43 € incl. VAT
from 880,43 € 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
649,13 € excl. VAT
from 785,45 € incl. VAT
from 785,45 € 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…


Comet M1322 temperature, humidity and CO2 multilogger
Upon request
862,72 € excl. VAT
1 043,89 € incl. VAT
1 043,89 € 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
746,76 € excl. VAT
903,58 € incl. VAT
903,58 € 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
312,41 € excl. VAT
378,02 € incl. VAT
378,02 € 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
709,30 € excl. VAT
858,25 € incl. VAT
858,25 € 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
285,71 € excl. VAT
345,71 € incl. VAT
345,71 € 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
830,05 € excl. VAT
1 004,36 € incl. VAT
1 004,36 € 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
395,70 € excl. VAT
478,80 € incl. VAT
478,80 € 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
288,50 € excl. VAT
349,09 € incl. VAT
349,09 € 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
288,50 € excl. VAT
349,09 € incl. VAT
349,09 € 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
717,27 € excl. VAT
867,90 € incl. VAT
867,90 € 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
306,83 € excl. VAT
371,26 € incl. VAT
371,26 € 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
304,04 € excl. VAT
367,89 € incl. VAT
367,89 € 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
310,82 € excl. VAT
376,09 € incl. VAT
376,09 € 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
310,82 € excl. VAT
376,09 € incl. VAT
376,09 € 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
369 € excl. VAT
446,49 € incl. VAT
446,49 € 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
490,93 € excl. VAT
594,03 € incl. VAT
594,03 € 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
439,93 € excl. VAT
532,32 € incl. VAT
532,32 € incl. VAT
Temperature range (max) | 80 °C |
---|---|
Temperature range (min) | -30 °C |
Humidity measurement range | 0 to100% |
CO2 measurement range | 2000 ppm |
The Comet 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
810,92 € excl. VAT
981,21 € incl. VAT
981,21 € 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
369,79 € excl. VAT
447,45 € incl. VAT
447,45 € 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
770,27 € excl. VAT
932,03 € incl. VAT
932,03 € 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
338,31 € excl. VAT
409,36 € incl. VAT
409,36 € 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
347,48 € excl. VAT
420,45 € incl. VAT
420,45 € 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
506,08 € excl. VAT
612,36 € incl. VAT
612,36 € 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
416,82 € excl. VAT
504,35 € incl. VAT
504,35 € 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
920,10 € excl. VAT
1 113,32 € incl. VAT
1 113,32 € 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
467,42 € excl. VAT
565,58 € incl. VAT
565,58 € 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
799,76 € excl. VAT
967,71 € incl. VAT
967,71 € 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
362,62 € excl. VAT
438,77 € incl. VAT
438,77 € 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
469,42 € excl. VAT
568 € incl. VAT
568 € 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
880,65 € excl. VAT
1 065,59 € incl. VAT
1 065,59 € 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
In stock
427,97 € excl. VAT
517,84 € incl. VAT
517,84 € 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
759,91 € excl. VAT
919,49 € incl. VAT
919,49 € 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
337,92 € excl. VAT
408,88 € incl. VAT
408,88 € 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
439,93 € excl. VAT
532,32 € incl. VAT
532,32 € 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
369,79 € excl. VAT
447,45 € incl. VAT
447,45 € 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
456,66 € excl. VAT
552,56 € incl. VAT
552,56 € 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.…