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Compact flue gas analyser

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THE testo 335 is a flue gas analyser, specially tailored to the requirements of industrial applications.

It is versatile and can be used by the operators of industrial combustion systems such as processing and power plants, by service technicians working for the manufacturers of boilers and burners, for plant construction, and also for stationary engines.

Even spot check measurements lasting up to two hours are possible.

The testo 335 is equipped with a standard O2 measuring cell. Two additional cells such as CO, COlow, NO, NOlow, NO2, or SO2, can be fitted as required. This guarantees highest flexibility when adapting to changing applications.

The instrument diagnosis provides information on the quality level of functions and wear parts at the touch of a button. Also included is a quality check on measuring cells, filter status, condensate trap level indicator, leaks in analyser, pump capacity, charging status of rechargeable battery, date of last maintenance, and sensor calibration data.

Measurement range extension

Very high CO concentrations often occur when "starting up" combustion systems and when monitoring emissions in stationary engines. As a protection, the CO measuring cell can be diluted with fresh air. In this way, the CO measurement range is extended to 50,000ppm.

An additional option: dilution of all measuring cells. The measurement range of each individual measuring cell is thus increased by a factor of 2. The measuring cell is then not under any greater pressure than in normal measurements.

Automatically controlled built in sample gas pump via a wide negative and positive pressure range (from -200 to +50 mbar) i.e. the pump flow is held constantly in this range. One further benefit: a blocked probe filter does not have any influence on the pump flow.

Lithium ion rechargeable batteries are able to be charged both inside the analyser and outside. They are highly compact with a service life of more than six hours.

The testo 335 allows measurement programs to run independently making spot check measurements lasting up to two hours possible. Five measurement programs are predefined by default. They can be changed by the user at any time and stored as required.

Increased safety

Testo design eliminates condensate developing in the measuring cell. This factor and the special design of the gas paths in the analyser in conjunction with the positioning of the condensate trap prevents blockage and considerably prolongs service life.

The gas pump is spared and its service life extended on account of the layout of the gas paths and an additional filter. The condensate trap is easily accessible for emptying.

When changing probes - probe can be attached quickly and easily - the analyser automatically recognises the request and the corresponding measurement menu appears immediately. The probe can remain positioned in the flue gas during the initialisation phase of the measuring cells.

The calibration phase is complete after thirty seconds. The memory management system inside the analyser facilitates easy, user-friendly structuring of data.

The instrument has a USB interface as well as a built-in IRDA interface. Additional calculations or individual measurement protocols can be generated using "easyEmission" software.

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