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CO and CO2 meter for ambient measurements – testo 315-3
The high-quality testo 315-3 is an easy-to-use, ruggedly designed CO and CO2 meter that enables you to carry out quick and reliable ambient measurements according to DIN EN 50543 standard.
The testo 315-3 ambient CO/CO2 gas meter allows simultaneous measurement of CO and CO2, intuitive operation, fast response time and accurate results.
- High-precision electrochemical CO sensor, shock resistant infrared CO2 sensor
- Visual and audible alarm when thresholds are breached – adjustable thresholds
- TÜV certified according to DIN EN 50543 standard
- Rugged design
Attachable humidity module - Capacitive
| Range | +5 to +95 %RH |
| Accuracy | ±2.5 %RH (5 to +95 %RH) |
| Resolution | 0.1 %RH |
Ambient CO₂
| Range | 0 to 10000 ppm |
| Accuracy | ±300 ppm (0 to 4000 ppm) 8 % of mv (4000 to 6000 ppm) 500 ppm (6000 to 10000 ppm) |
| Resolution | 10 ppm |
Ambient CO
| Range | 0 to 100 ppm |
| Accuracy | ±3 ppm (0 to 20 ppm) ±5 ppm (>20 ppm) |
| Resolution | 0.5 ppm |
Temperature
| Range | -10 to +60 °C |
| Accuracy | ±0.5 °C (±1 Digit) |
| Resolution | 0.1 °C |
General technical data
| Protection class | IP40 acc. to EN 60529 |
| EU-/EG-guidelines | 2004/108/EG |
| Warranty | 12 months |
| Measurement | Ambient |
| Interface | IRDA / optional Bluetooth |
| Batteries | Lithium polymer rechargeable battery |
| Battery life | 10 h measurement time (at +20 °C/+68 °F) / Mains operation possible |
| Battery type | Battery charge |
CO / CO2 measurement in the heated environment
Carbon monoxide (CO) is a colourless, odourless and taste-free gas, but also poisonous. It is produced during 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 in the surrounding areas.
Measuring humidity
Humidity is an important parameter for health and comfort. Above all, relative humidity is the significant factor - it indicates the extent to which air is saturated with water vapour.
With relative humidity of 50%, the air contains just half the maximum amount of water vapour that it could at the right temperature. At 100% relative humidity, the air is completely saturated with water vapour. If 100% saturation is exceeded, the excess moisture condenses into condensate.
Therefore, relative humidity can indicate how fast evaporation will take place or the likelihood of condensation forming. As the evaporation of moisture through skin is determined by the relative humidity of the ambient air, the latter is an important parameter for the feeling of comfort.
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