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£449.00 £538.80 (Inc. VAT)

Product Description

Testo 310 – Flue Gas Analyser (Standard Kit)

  • Direct O2, CO, flue gas and ambient temperature measurements
  • Integrated measurement menu for flue gas, draft, CO ambient air and


  • Quick sensor zero in only 30 seconds
  • Large, backlit digital display, rechargeable lithium battery with up to 10

    hours life

Being a systems mechanic you know only too well how tough things can get when

you€™re working out in the field. That€™s why your measuring tools need to be rugged

and reliable. Like the testo 310 flue gas analyzer. Designed especially for use in

the field.

Product Description

The Testo 310 Flue Gas Analyser combines simple functions with a high level of

measurement accuracy, and is perfect for all basic measurements on heating systems.

Long battery lifetimes of up to 10 hours guarantee high availability. It€™s easy

handling and compact design make the testo 310 a robust tool for daily work – even

when things get rough.

With its capability to perform both basic or more complex combustion analysis,

perform maintenance or safety checks, or confirm boiler efficiency, the fully

featured testo 310 residential combustion analyser is ready to provide accurate

analysis. The stainless steel probe and cone-stop is perfect for residential, and

boiler efficiency applications. Simple top-of-display icons show you the current

measurement functions. After only 30 seconds, the 310 is ready to test. With five

different fuels to select from (Natural Gas, Propane, Fuel Oil 2%, Biomass 5%, Wood

20%), it provides the flexibility you need for all your residential combustion

analysis applications.


  • O2, CO (with built-in NOx filter), CO2
  • Undiluted CO (CO air free)
  • Ambient CO
  • Draft & Pressure
  • Temperature (flue & ambient)
  • Combustion/flue gas efficiency & excess air

Technical Data

Temperature – TC Type K (NiCr-Ni)
Measuring range -20 to +100 °C
Accuracy ±1 °C
Resolution 0.1 °C
Reaction time < 50 s

Temperature (ambient temperature)

Temperature – TC Type J (Fe-CuNi)
Measuring range 0 to +400 °C
Accuracy ±1 °C (0 to +100 °C)

±1.5 % of mv (> 100 °C)

Resolution 0.1 °C
Reaction time < 50 s

Temperature (flue gas)

Flue gas O‚‚
Measuring range 0 to 21 Vol.%
Accuracy ±0.2 Vol.%
Resolution 0.1 Vol.%
Reaction time 30 s

Flue gas Draught
Measuring range -20 to +20 hPa

±0.03 hPa (-3 to +3 hPa)

Accuracy ±1.5 % of mv (Remaining Range)
Resolution 0.01 hPa

Flue gas degree of effectivity, Eta (calculated)
Measuring range 0 to 120 %
Resolution 0.1 %

Flue gas loss (calculated)
Measuring range 0 to 99.0 %
Resolution 0.1 %

Flue gas CO‚‚ calculation (calculated from O‚‚)
Measuring range 0 to CO‚‚ max (Display range)
Accuracy ±0.2 Vol.%
Resolution 0.1 Vol.%

Pressure measurement
Measuring range -40 to +40 hPa
Accuracy ±0.5 hPa
Resolution 0.1 hPa

Flue gas CO (without H‚‚-compensation)
Measuring range 0 to 4000 ppm
Accuracy ±20 ppm (0 to 400 ppm)

±5 % of mv (401 to 2000 ppm)

±10 % of mv (2001 to 4000 ppm)

Resolution 1 ppm
Reaction time < 60 s

General technical data
Dimensions 201 x 83 x 44 mm
Operating temperature -5 to +45 °C
Display type LCD
Display function
Power supply
Storage temperature <-20 to +50 °C
Weight <(with probe) Approx. 700 g

Technical Data


Draught measurement in the flue gas duct

Draught measurement is actually a differential pressure measurement. This

differential pressure occurs between two sub-areas as a result of a difference in

temperature. This is turn generates a flow to compensate. In the case of flue gas

systems, the difference in pressure is an indicator of the €œchimney flue draught€.

This is measured between the flue gas and ambient air at the measurement orifice at

the core of the flue gas flow.

To ensure the flue gases are safely transported through the chimney there must be a

differential pressure (chimney flue draught) for boiler systems that work with low


If the draught is permanently too high, the average flue gas temperature increases

and therefore flue gas loss. The level of efficiency drops.

If the draught is permanently too low, oxygen may be lacking during combustion,

resulting in soot and carbon monoxide. This will also cause a drop in the level of


Ambient CO 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 places often frequented by people (in our case,

where the combustion systems for hot water generation are), and in the surrounding


Measuring the flue gas parameters of the burner (CO, O2, and temperature, etc.)

The flue gas measurement for a heating system helps to establish the pollutants

released with the flue gas (e.g. carbon monoxide CO) and the heating energy lost

with the warm flue gas. In some countries, flue gas measurement is a legal

requirement. It primarily has two objectives:

1. Ensuring the atmosphere is contaminated as little as possible by

pollutants; and

2. Energy is used as efficiently as possible.

Stipulated pollutant quantities per flue gas volume and energy losses must never be


Measurement in terms of results required by law takes place during standard

operation (every performance primarily using the appliance). Using a Lambda probe

(single hole or multi-hole probe), the measurement is taken at the centre of flow

in the connecting pipe (in the centre of the pipe cross-section, not at the edge)

between the boiler and chimney/flue. The measured values are recorded by the flue

gas analyzer and can be logged either for print out or transfer to a PC at a later


Measurement is taken by the installer at commissioning, and if necessary four weeks

later by the flue gas inspector/chimney sweep, and then at regular intervals by the

authorised service engineer.

Measuring pressure on burners (nozzle pressure, gas flow pressure, etc.)

Standard readings taken during services of domestic heating systems include

checking the gas pressure on the burners. This involves measuring the gas flow

pressure and gas resting pressure. The flow pressure, also called supplied

pressure, refers to the gas pressure of the flowing gas and resting pressure of the

static gas. If the flow pressure for gas boilers is slightly outside the 18 to 25

mbar range, adjustments must not be made and the boiler must not be put into

operation. If put into operation nonetheless, the burner will not be able to

function properly, and explosions will occur when setting the flame and ultimately

malfunctions; the burner will therefore fail and the heating system will shut down.


Spare particle filter, compact probe; 10 off

Testo fast printer IrDA with wireless infrared interface; 1 roll thermal paper; 4

AA batteries

USB mains unit incl. cable

Delivery Scope

testo 310 – Flue Gas Analyser, Hard case, rechargeable battery, usb mains cable,

silicon hose for pressure, 5 x filters, calibration protocol, 180mm probe with

cone, spare pressure plugs.

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