NHS & Schools: COVID-19 Product Discount
All Testo Products

Testo 315-4 Carbon Monoxide (CO) Meter

Reward Points (?)

Logged in, worth £5.58, read more.

£335.94 £279.95
Advice & Support
Price Match Request

Detect and measure the amount of carbon monoxide (CO) in ambient air with the Testo 315-4 CO Meter!

Testo 315-4 is ideal for use in a wide variety of applications where carbon monoxide is a danger. It is particularly suited for use by gas professionals and can be used to check heating and ventilation systems for CO content before, during and after work has taken place.

Highly precise, the 315-4 is made to detect even the slightest concentrations of toxic carbon monoxide gas from 0 to 100ppm with resolution of 0.5ppm. A built-in electromechnical CO sensor constantly assesses the amount of CO in ambient air, displaying the current detected value on the display. For added protection, the user can configure optical and audible alarms which will sound when limit values are exceeded, protecting you from harmful levels of gas.

The Testo 315-4 is powered by built-in rechargeable batteries with 50 hour measurement time and TUV tested according to EN 50543.

Testo 315-4 Carbon Monoxide Meter Key Features

  • Monitors ambient air conditions to detect CO (carbon monoxide) gas
  • Full measurement display of CO content from 0 to 100ppm with resolution of 0.5ppm
  • Set your own audible and optical alarm limits - get alerted instantly when CO spikes are detected
  • Highly precise, designed to detect even the smallest amounts of CO
  • TUV-tested according to EN 50543
  • Optional humidity and temperature module available (sold separately) for measuring air temp and humidity values
  • Print out measurement results on-site with the optional printer (sold separately)
  • 50 hour battery life, powered by rechargeable batteries
  • HOLD function temporarily stores current values shown on screen
  • MAX/MIN mode calculates the maximum and minimum values taken over a period of time
  • 24 month warranty on instrument, 12 month on battery, 12 months on CO sensor

What's Included?

  • Testo 315-4 Carbon Monoxide Meter
  • USB Mains Cable
  • Cable

Optional Accessories

All the items below are sold separately. Please call sales if interested in any of these accessories.

Part numbers are in bold.

  • 0636 9725: Temperature/Humidity Module for 315-4
  • 0554 1105: USB Mains Unit, Including Cable
  • 0516 0221: TopSafe Protective Case for 315-4
  • 0516 0191: Storage Bag
  • 0554 0549: Testo IRDA Printer with Wireless Infrared Interface + 1 Roll of Thermal Paper & 4 x AA Batteries
  • 0554 0568: Spare Thermal Paper For Printer
  • 0554 0660: Control and Calibration Set for Humidity Sensors (11.3% RH and 75.3% RH)
Accessories related to this product:
  1. Testo 0516 0191 Service Case - Open
    Testo 0516 0191 Service Case
    Lead Time: 1-6 Days
    £33.37 £27.81
  2. Testo 05540549 Fast Printer
    £203.94 £169.95
  3. Testo 05540568 Spare Thermal Paper Printer – Six Rolls
    £22.57 £18.81
Part Code0632 3155

Testo 315-4 Technical Specifications

Note: following specs for humidity/temperature only apply if the optional humidity/temp sensor is equipped (not included as standard)

Measurement Ranges and Resolution
Measurement Parameters Measuring Range Resolution
CO 0 to 100ppm 0.5ppm
Humidity 5 to 95% RH 0.1% RH
Temperature -10 to +40°C (14 to 104°F) 0.1°C/°F
Accuracy and Response Time
Measurement Parameter Accuracy Response Time
CO ±3ppm to 20ppm
±5ppm from 20ppm
<120s (t90)
Humidity ±2.5% RH (5 to 95% RH) -
Temperature ±0.5°C (+1 digit) -
Additional Specifications
Storage/Transport Conditions -20 to 60°C (-4 to 140°F)
0 to 95% RH
Operating Conditions 0 to 40°C (32 to 104°F)
0 to 95% RH
Weight (Incl. Holster) Approx 382g
Housing Material ABS
Dimensions (L x W x H) 190 x 65 x 40mm
Protection Class IP40 acc. to EN 60529
Rechargeable Battery Life Typically 50h measuring time (at 20°C/68°F), mains operation possible
Display Segment display
Supported Printer 0554 0549/0554 0547 (sold separately)
License acc. To EN 50543
Warranty Instrument: 24 months
Rechargeable battery: 12 months
CO sensor: 12 months
EU Guideline 2014/30/EU
0 Reviews Overall Rating

Write a Review

Write Your Own Review
You're reviewing:Testo 315-4 Carbon Monoxide (CO) Meter
Your Rating

Subscribe to our Newsletter

International Enquiry