Alpha Moisture Systems dewSMART ADSH Manual de instruções - Página 10

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1. General Specification

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OPERA TION

The system is designed to operate continuously, with a minimum amount of operator

input.

It is, however, advisable to inspect the sample loop periodically to ensure that the

required pressures and flows are being maintained.

The number and type of items employed in the sample loop will determine what, if any,

other routine checks should be made. If, for instance, a filter is used, the filter element

should be inspected periodically and changed when necessary.

The instrument should not require any routine maintenance but if any malfunction is

suspected it is advisable to contact your local dealer.

Should it be necessary, at any time or for whatever reason, to change either the

instrument or sensor, it should be noted that the components of the DS 1000 system are

fully and completely interchangeable provided that the conesponding instrument/sensor

range is requested. The only adjustment necessary would be the alarm set points in the

case of the instrument.

While the sensor should give several years operation, it is advisable to confirm the

calibration, from time to time, to ensure accurate operation of the system.

The sensor is equipped with an 'Autocal'

feature which allows adjustment of the

calibration span. To operate the' Autocal' use the following procedure:-

Refer to sensor assembly drawing page 11. Unscrew the black serrated retaining

ring from the cable plug and carefully lift the plug away from the sensor body, to

expose the internal PCB. Reconnect the sensor cable.

Locate the small potentiometer on the top edge of the PCB.

Expose the sensor to a known dewpoint (e.g. ambient air, or a calibration gas) and

adjust the' Autocal' potentiometer until the display reads the known dewpoint.

Re-assemble the sensor plug, ensuring that the '0' ring is cOlTectlypositioned and

re-install the sensor in its nOlmal operating position.

This completes the procedure

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