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testo 315-4 - CO measuring instrument

testo 315-4
testo 315-4
The testo 315-4 is a high-quality, durable CO meter designed for ease of use, delivering fast and reliable ambient carbon monoxide measurements. You can, for example, detect CO in the ambient air around heating systems. It features an easy-to-read display with visual and audible alarms that activate when CO thresholds are exceeded.
  • High Precision - carbon monoxide measurement in ambient air.
  • Visual & Audible Alarm - when adjustable thresholds are breached.
  • TÜV Certified - according to DIN EN 50543 standard.

Overview

Carbon monoxide (CO) is a colorless, odorless, and tasteless but highly toxic gas, often produced by the incomplete combustion of carbon-based fuels such as oil, gas, and solid fuels. Regular monitoring of CO emissions around heating systems and their surroundings is essential for safety and compliance.

testo 315-4 – Precision CO Measurement

The testo 315-4 is a state-of-the-art, easy-to-use, and robust CO measuring instrument, designed for accurate ambient air monitoring. It enables reliable detection of carbon monoxide around heating systems, with the additional capability to measure humidity and temperature in parallel.

Measurement results are displayed clearly on a digital screen, and if CO levels exceed the user-adjustable limits, both visual and audible alarms are triggered. To enhance efficiency, the device features a lithium polymer battery with an automatic power-off function, ensuring energy-saving operation when not in use.

Expand Your testo 315-4 with Accessories

The testo 315-4 is built to withstand demanding conditions, with optional accessories available to extend its functionality:
  • TopSafe Protective Casing – Water and dirt-resistant for reliable operation in tough environments.
  • Testo Fast Printer – Allows on-site printouts via wireless infrared transmission for instant documentation.
  • Temperature/Humidity Module – Expands measurement capabilities to include temperature and humidity alongside CO monitoring.

With its advanced features and accessory options, the testo 315-4 is a professional-grade solution for accurate and efficient CO monitoring in ambient air.

General technical data

Operating humidity
0 to 95 %RH
Weight
200 g
Dimensions
190 x 65 x 40 mm
Operating temperature
0 to +40 °C
EU-/EG-guidelines
2004/108/EG
Interface
IR/IRDA interface
Storage battery type
Lithium polymer battery pack
Battery life
70 h measurement time (at +20 °C/+68 °F) / Mains operation possible
Battery charge
In instrument via charger
Storage temperature
-20 to +60 °C

Attachable humidity module - Capacitive

Measuring range
+5 to +95 %RH
Accuracy
±25.0 %RH (5 to +95 %RH)
Resolution
0.1 %RH

testo 315-4 CO measuring instrument for ambient measurements, including USB mains unit, cable, calibration protocol.

Contact Us
Testo Ltd
Newman Lane
GU34 2URAlton
HampshireUnited Kingdom
01420 544433

Opening hours

Monday-Thursday: 8:30am - 17:00pmFriday: 8:30am - 16:00pm
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