Vaisala DPT146 Guide de l'utilisateur télécharger pdf (Page 55)

Chapter 6 _______________________________________________________________ Maintenance

VAISALA ________________________________________________________________________ 53

CHAPTER 6

MAINTENANCE

This chapter provides information that is needed in basic maintenance of

the DPT146.

Periodic Maintenance

Cleaning

The body of the transmitter can be cleaned by wiping with a moistened

lint-free cloth. Do not immerse the transmitter in liquid, and do not use

cleaning agents or solvents.

Changing the Filter

Replace the filter if it is contaminated. New filters and related accessories

are available from Vaisala; see section Spare Parts and Accessories on

page 64.

CAUTION

Be careful when changing the filter, since it is easy to break the sensor

when the filter is removed.

CAUTION

If the transmitter is installed in a pressurized chamber, always make sure

that the pressure of the chamber is equalized with the ambient pressure

prior to removing the transmitter. When the transmitter is removed for

maintenance, cap the hole with a c

apped nut. This way, the chamber can

be pressurized although the transmitter is not in place.

Plugs are available from Vaisala for ISO and NPT threaded connections.

When replacing the filter, handle the filter from the top of the filter body.

Inspect the sealing ring for damage (used with ISO and UNF threads

only), and replace it if necessary.

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Vaisala DPT146 Guide de l'utilisateur Page 55