The testo 315-4 is a convenient, precise and robust measuring instrument for recording ambient CO values. It identifies even the slightest concentrations of the highly toxic gas. This allows safety judgements to be made, for example whether ambient air-dependent heating systems can be operated without danger.

TUV-tested according to EN 50543
Electrochemical CO sensor, measuring range 0 to 100 ppm
Optical and audible alarm when limit values are exceeded (freely adjustable limit values)
Printout of measurement data possible directly on site
Protection to IP40
Dimensions 190 x 65 x 40 mm

The 315-4 has a 24-month warranty. Its CO sensor and battery pack have a 12-month warranty.

Lithium-polymer battery pack (rechargeable)

For quick, precise detection of ambient carbon monoxide, use this handheld gas detector from Testo. It can detect CO levels between 0 and 100ppm, keeping you and your workplace safe from dangerous exposure. For flexibility, you can set your own limit values and an optical and audible alarm will sound when they’re exceeded. This helps ensure you're aware of potential hazards.

• LCD display offers easy-to-read results
• Long battery life of 50 hours for long-lasting portability

• HVAC systems
• Office buildings

Carbon monoxide is colourless and odourless, so you need specialist equipment to tell if it has reached dangerous levels. CO can build up around faulty ventilation and heating equipment, so it's important to monitor these areas so you can respond quickly to potential emergencies.

Gas Detection: Carbon Monoxide Detection

Carbon Monoxide is a deadly toxic gas that has no smell and cannot be seen or tasted. Its presence is lethal causing death and injury, it can be caused by poorly installed or maintained heating appliances, chimneys, flues and gas fired cooking appliances. Even low levels of CO can impair judgement and greatly increase risk of accidents and injury in motorists and machine operators.