testo 317-3 - CO Monitor

SKU: 6323173

Sale price£148.65 inc VAT


  • eady to go: no zero phase

  • Alarm with adjustable thresholds

  • Carry case with belt clip and handstrap

  • 3-year CO sensor warranty

Carbon monoxide is a killer. That’s why CO checks need to be carried out when a gas heating or boiler is being serviced or installed. The compact testo 317-3 CO meter is designed to provide you with a quick and reliable means of testing the surrounding air for carbon monoxide.



Product Description


Carbon monoxide is a particularly dangerous gas. It is colorless, it is odorless and above all it is lethal. That`s why it is so important that CO checks are carried out by the book when a gas heating or boiler is being serviced or installed. This not only ensures that the heating or boiler is working properly, it also helps to prevent tragic accidents that occur as a result of carbon monoxide poisoning.

The testo 317-3 CO meter. For measuring carbon monoxide in the surrounding air

A few seconds. That`s all it takes. That`s all it takes to be on the safe side and test the surrounding air for carbon monoxide. The testo 317-3 CO meter measures the concentration of carbon monoxide in the surrounding air and presents the readings on an easy-to-read display. The CO meter has both a visual and an audible alarm which are triggered when a threshold is crossed. The thresholds can be adjusted individually.

The CO meter comes with a carry case and a belt clip to ensure that you always have your meter on you and a handstrap which can be wrapped loosely around the wrist to prevent the meter from falling onto the floor.

And as if that wasn`t enough to convince you, the testo 317-3 also comes with a 3-year CO sensor warranty. There`s testo for you.

Delivery Scope

resto 317-3 - CO Monitor, carrying case with belt clip, headphones, wrist strap, sampler and calibration protocol

Technical Data

General technical data

Operating temperature

-5 to +45 °C

Battery type

2 AAA micro batteries

Battery life

150 h (with beeper switched off)

Storage temperature

-20 to +45 °C

Ambient CO

Measuring range

0 to +1999 ppm


±3 ppm (0 to +29 ppm)

±10 % (+30 to +1999 ppm)


1 ppm


CO measurement in the heated environment

Carbon monoxide (CO) is a colourless, odourless and taste-free gas, but also poisonous. Its sources include the incomplete combustion of substances containing carbon (oil, gas and solid fuels, etc.). If CO manages to get into the bloodstream through the lungs, it combines with haemoglobin thus preventing oxygen from being transported in the blood; this in turn will result in death through suffocation. This is why it is necessary to regularly check CO emissions at the combustion points of heating systems and also in the surrounding areas.

BrandTESTO (CAT 100)

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