Thanks to the new instrument functions, the Testo flue gas analyzers of the new testo 330-LL series now offer you even more professional and reliable support. These are the main features:
Applications
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 the surroundings.
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.
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 or carbon dioxide CO2) 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:
Stipulated pollutant quantities per flue gas volume and energy losses must never be exceeded.
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 stage.
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 temperatures on radiators
When measuring temperatures on radiators, the flow and return temperature are recorded in particular and assessed by the tradesman. The flow temperature is defined as the temperature of the thermal transfer medium (e.g. water) that the system is supplied with. The temperature of the medium flowing out of the system is accordingly called the return temperature. To prevent losses within the heat distribution system and achieve a better level of efficiency spot recording of flow and return temperatures are necessary. Implementation of relevant measures ultimately leads to hydraulic adjustment on the basis of knowledge about the flow and return temperatures. This defines a procedure with which every radiator or heating circuit of a flat radiator within a heating system is supplied at a set flow temperature with the precise amount of heat needed to achieve the ambient temperature required for the individual rooms. Flawed operating conditions will result in considerable excess consumption of electricity and heating energy. The German Energy Saving Regulation (EnEV) therefore requires hydraulic adjustment for systems being set up or overhauled for this very reason.
Technical Data
| Differential Pressure - Piezoresistive | |
|---|---|
| Measuring range | 0 to +300 hPa |
| Accuracy |
±0.5 hPa (0.0 to 50.0 hPa) ±1 % of mv (50.1 to 100.0 hPa) ±1.5 % of mv (Remaining Range) |
| Resolution | 0.1 hPa |
| Flue gas O₂ | |
|---|---|
| Measuring range | 0 to 21 Vol.% |
| Accuracy | ±0.2 Vol.% |
| Resolution | 0.1 Vol.% |
| Reaction time t₉₀ | < 20 s |
| Flue gas CO (with H₂-compensation) | |
|---|---|
| Measuring range | 0 to 8000 ppm |
| Accuracy |
±10 ppm or ±10 % of mv (0 to 200 ppm) ±20 ppm or ±5 % of mv (201 to 2000 ppm) ±10 % of mv (2001 to 8000 ppm) |
| Resolution | 1 ppm |
| Reaction time t₉₀ | < 60 s |
| Flue gas COlow | |
|---|---|
| Measuring range | 0 to 500 ppm |
| Accuracy |
±2 ppm (0 to 39.9 ppm) ±5 % of mv (40 to 500 ppm) |
| Resolution | 0.1 ppm |
| Reaction time t₉₀ | < 40 s |
| Flue gas NO | |
|---|---|
| Measuring range | 0 to 3000 ppm |
| Accuracy |
±5 ppm (0 to 100 ppm) ±5 % of mv (101 to 2000 ppm) ±10 % of mv (2001 to 3000 ppm) |
| Resolution | 1 ppm |
| Reaction time t₉₀ | < 30 s |
| Flue gas Nolow | |
|---|---|
| Measuring range | 0 to 300 ppm |
| Accuracy |
±2 ppm (0 to 39.9 ppm) ±5 % of mv (40 to 300 ppm) |
| Resolution | 0.1 ppm |
| Reaction time t₉₀ | < 30 s |
| Flue gas Draught | |
|---|---|
| Measuring range | -9.99 to +40 hPa |
| Accuracy |
±0.02 hPa or ±5 % of mv (-0.50 to +0.60 hPa) ±0.03 hPa (+0.61 to +3.00 hPa) ±1.5 % of mv (+3.01 to +40.00 hPa) |
| Resolution | 0.01 hPa |
| Temperature | |
|---|---|
| Measuring range | -40 to +1200 °C * |
| Accuracy |
±0.5 °C (0 to +100.0 °C) ±0.5 % of mv (Remaining Range) |
| Resolution |
0.1 °C (-40 to +999.9 °C) 1 °C (> +1000 °C) |
| Flue gas degree of effectivity, Eta (calculated) | |
|---|---|
| Measuring range | 0 to 120 % |
| Resolution | 0.1 % |
| Flue gas loss (calculated) | |
|---|---|
| Measuring range | 0 to 99.9 % |
| Resolution | 0.1 % |
| Flue gas CO₂ calculation (calculated from O₂) | |
|---|---|
| Measuring range | 0 to CO₂ max (Display range) |
| Accuracy | ±0.2 Vol.% |
| Resolution | 0.1 Vol.% |
| Reaction time t₉₀ | < 40 s |
| Pressure measurement | |
|---|---|
| Measuring range | 0 to +300 hPa |
| Accuracy |
±0.5 hPa (0.0 to 50.0 hPa) ±1 % of mv (50.1 to 100.0 hPa) ±1.5 % of mv (Remaining Range) |
| Resolution | 0.1 hPa |
| Flue gas CO (without H₂-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 t₉₀ | < 60 s |
| Ambient CO | |
|---|---|
| Measuring range | 0 to 500 ppm |
| Accuracy |
±5 ppm (0 to 100 ppm) ±5 % of mv (> 100 ppm) |
| Resolution | 1 ppm |
| Reaction time | Approx. 35 s |
| Ambient CO₂ | |
|---|---|
| Measuring range |
0 to 1 Vol.% 0 to 10000 ppm |
| Accuracy |
±75 ppm or ±3 % of mv (0 to 5000 ppm) ±150 ppm or ±5 % of mv (5001 to 10000 ppm) |
| Reaction time | Approx. 35 s |
| Gas leak measurement for combustible gases (via gas leak detection probe) | |
|---|---|
| Measuring range | 0 to 10000 ppm CH₄ / C₃H₈; Display range |
| Accuracy | Signal optical display (LED) audible signal via buzzer |
| Reaction time t₉₀ | < 2 s |
| General technical data | |
|---|---|
| Dimensions | 270 x 90 x 65 mm |
| Operating temperature | -5 to +45 °C |
| Protection Class | IP40 |
| Warranty | Probe: 48 months; Gas sensors (O₂, CO) 48 months; NO sensor 24 months; COlow sensor 24 months; Thermocouple 12 months; rechargeable battery: 12 months |
| Display size | 240 x 320 pixels |
| Display function | Colour graphic display |
| Power supply | Rechargeable battery pack 3.7 V / 2.6 Ah; Mains unit 6 V / 1.2 A |
| Maximum | 500,000 readings |
| Storage temperature | -20 to +50 °C |
| Weight | 600 g (without rechargeable battery) |
