Energizer PORTABLE GAS DETECTION INSTRUMENT Manual de usuario descargar pdf (Pagina 26)

always running even in Calibration or Gas Test modes - it is essential

to use the C01874 'bellows' style flow plate.

Pumped units with software version 1V08 or later where the default

configuration is that the pump is automatically switched off in

Calibration or Gas Test mode. Use the clip on calibration flow plate

C011005 unless the default configuration has been changed to main-

tain the pump running for Calibration or Gas Test in which case it is

essential to use the C01874 'bellows' style flow plate.

Ozone detector calibrations

Always calibrate Crowcon ozone detectors with ozone only.

Fittings:

For ozone calibrations all fittings and pipework should be stainless steel, brass,

aluminium or PTFE. Fittings or pipework in other plastic materials such as Tygon

must not be used.

Gas flow rate:

It is important that the flow rate is set correctly as otherwise pressure effects

may distort calibration values and prevent the gas detector from working cor-

rectly. To calibrate Crowcon portable detectors the flow rate should be set

between 0.8-1.0 litres / minute (0.03-0.04 cubic feet / minute).

Normal safety precautions for handling ozone should always be observed along

with any special instructions that accompany the calibration gas cylinder or

generator being used.

Model specific instructions:

Below is information about the calibration of specific Crowcon detectors. This

differs between models due to the different interactions of sensors and gas

flows in each type.

For calibrating the ozone, the flow plate with four inlets (part number S012976)

should be used. The ozone sensor should always be at position 3 as marked on

the aspirator plate. Note that the standard flow plate must be used for calibrat-

ing the other gas sensors.

Maintenance and Calibration Tetra

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Energizer PORTABLE GAS DETECTION INSTRUMENT Manual de usuario Pagina 26