Carbon Monoxide (CO) Gas Detector

Carbon Monoxide (CO) Detectors are used in applications such as underground garages, tunnels, go-kart race courses, engine repair shops, loading bays, engine test benches, shelters, etc.

Carbon Monoxide (CO) Detectors are used to warn when the quantity of harmful gases reaches an unhealthy level.

Carbon Monoxide (CO) Detectors are used to ensure that the management of ventilation is done the best and most profitable way, ie. according to fresh air requirements.

When the concentration of Carbon Monoxide (CO) Detectors becomes too high, the fans starts automatically and stops again when the Carbon Monoxide (CO) concentration has down to the predetermined level.

The Carbon Monoxide (CO) Detectors have a built-in electrochemical Carbon Monoxide (CO) sensor and have 5 years life time expectancy in normal operation enviroment.

Numbers of Carbon Monoxide (CO) Detectors per square meter is different depending on local regulations, country regulations and applications.
Recommended (role of thumb) is one Carbon Monoxide (CO) Detectors per 400 m2.

Mounting height for Carbon Monoxide (CO) Detectors is 1.5 meter above floor.

Carbon Monoxide (CO) Gas Detector COW 1351

  • Electrochemical sensor (replaceable)
  • Measuring ranges 0-50 ppm, 0-100 ppm, 0-200 ppm or 0-300 ppm (DIP switches)
  • Two outputs: 4-20 mA and 0-10 Vdc
  • t90 < 50 sec.
  • Sensor life time 6 years
  • IP65 for enclosure, IP41 for probe
  • Power supply 24 Vac/dc

Carbon Monoxide (CO) Gas Detector COW 1351 MDR2B is same as COW 1351 plus that the COW 1351 MDR2B have extra features with:

  • Modbus RS485
  • LCD Display
  • 2 x Relays outputs
  • Buzzer

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Carbon Monoxide (CO) Gas Detectors COW-series

Carbon Monoxide (CO) Gas Detector GCO

  • Output 4-20 mA or 2-10 Vdc
  • Power supply 24 Vdc
  • Ranges:
  • GCO 100 have range 0-100 ppm
    GCO 300 have range 0-300 ppm

  • Sensor element electrochemical

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Carbon Monoxide (CO) Gas Detectors GCO-series

Standard features for DeLuxe-version
Gas Central with built-in Gas Detector for
Carbon Monoxide (CO), CMC-series

  • Measuring ranges
    0-50 ppm,0-100 ppm, 0-150 ppm, 0-200 ppm, 0-300 ppm,
    0-400 ppm, 0-500 ppm, 0-1000 ppm or 0-2000 ppm
  • LCD display to show actual in ppm
  • Status LED indication
    Normal operation - Fault - Alarm 1 - Alarm 2
  • Keyboard
    4 push-button - menu-driven
  • Internal buzzer
  • (0)2-10 Vdc or (0)4-20 mA output, jumper selectable
  • Supply voltage range 18-28 Vac/dc
  • 2 x relay alarm outputs
    Alarm relay 1 for CO gas alarm level 1
    Alarm relay 2 for CO gas alarm level 2
  • 2 x binary outputs
  • 4-20 mA input for external CO or NO2 detector

Options for Deluxe-version,
Gas Central with built-in Gas Detector for
Carbon Monoxide (CO), CMC-series

  • LED flashing light
  • Warning lights
  • Power relays
  • Warning horn
  • Heating
  • Duct mounting set
  • Modbus RS-485

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DeLuxe-version Gas Central with built-in Gas Detector for Carbon Monoxide (CO), CMC-series

Carbon Monoxide (CO) Detector
CMD-series = wall, plastic IP65.
CMB-series = duct, plastic IP65.
CMS-series = wall, stainless steel IP55.

  • Supply voltage 18-28 Vac/dc
  • Outputs (0)2-10 Vdc or (0)4-20 mA (jumper selectable)
  • Measuring ranges
    0-50 ppm,0-100 ppm, 0-150 ppm, 0-200 ppm, 0-300 ppm,
    0-400 ppm, 0-500 ppm, 0-1000 ppm or 0-2000 ppm

Options for Premium-version
Carbon Monoxide Detector (CO) Detector
CMD, CMB and CMS-series:

  • Relay Pack (2 alarm relays)
  • Buzzer/Siren
  • LCD display
  • LED indicator
  • Heating
  • Modbus RS-485

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Premium-version Carbon Monoxide (CO Detector,
CMD, CMB and CMS-series

Carbon Monoxide Detector (CO)
CMA-series = wall, plastic IP65.
CMK-series = duct, plastic IP65.
CMR-series = wall, stainless steel IP55.

  • Supply voltage 18-28 Vdc
  • Outputs 4-20 mA or 2-10 Vdc
  • Measuring ranges
    0-50 ppm,0-100 ppm, 0-150 ppm, 0-200 ppm, 0-300 ppm,
    0-400 ppm, 0-500 ppm or 0-1000 ppm


Basic-version with CMA, CMK and CMR-series is the lower cost version with no possibilities to add any options. Select DeLuxe-version with CMC-series or Premium-version with CMD, CMB and CMS-series when more features/options such Relays, LCD display, LED indication, Buzzer etc. are required.

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Basic-version Carbon Monoxide (CO) Detector,
CMA, CMK and CMR-series

Installation guidelines (FAQ)

for Carbon Monoxide (CO) gas detectors and Nitrogen Dioxide (NO2) gas detectors in underground garages, parking houses and tunnels.

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Buying a CO Detector? Know the Basics

The government has made it mandatory for builders and house owners to include carbon monoxide detectors in every floor of a residence. And you must have noticed how the registration officials looked carefully for safety measures in your house before giving you the final nod o owning the property. To be a discerning owner you need to upgrade facilities and fire and safety measures in your home from time to time. And even you are an experienced buyer in terms of carbon monoxide detectors brushing up your basics when before starting on the final market hike is really important.

What Are The Main Types Of CO Detectors Available In The Market?

There are biomimetics, metal oxides, and electrochemical cored devices. These devices are so named due to the basic difference in the carbon monoxide sensor technology that has been used in them. Out of these three main types electrochemical devices have been known to give accurate results. Real time constant LCD screen displays and LED lights present on these detectors make it easy for the user to follow the records of the different levels of carbon monoxide in the house. He can accordingly tune down the use of probable carbon monoxide emitting appliances at home. These include air conditioners, propane water heaters, corn burners, wood burners, furnaces, and so on.

Features That You Must Look For

When you are out there in the crowd of carbon monoxide alarms, you should streamline your search by looking for new features that have been included in recent models. LED lights that glow in different shades corresponding to the level of carbon monoxide present in the air have already been mentioned. LCD displays of the latest recordings are also around these days. Go for carbon monoxide transmitter which have a decent amount of memory to help you look up records and decide what appliances to use at home and when to time their usage. Also look for the testing button on devices you consider buying. The testing button ensures that you can run a check if the CO transmitters are working in good shape on a regular basis. This ensures that there is no miss in spite of any unhappy alarms occurring in the near past or future.

Add on the Direct Advantages

Do not forget that carbon monoxide alarms can be great life savers. Especially those which have smoke detectors integrated within the device itself. Nothing works better than a combined carbon monoxide cum smoke detector created using the superior sensor technology of CO sensors and performing to their best using built-in buzzers, displays, and lights. Adding up to the performance of the devices using external buzzers and flash lights further enhances the capacity of the device you buy.
So yes when you are purchasing a new carbon monoxide alarm purchase a set of external side warning devices. They really give you fulfilling and content sleep in the nights. This is because you are completely assured about the effectiveness and accuracy of the device which can wake you up even in the middle of the night thanks to the power of the buzzers.