Galltec+mela D Series Manual - Página 10

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Mounting instructions

Position

Connection

User instructions

Dew formation

Cleaning of

filters and

protective baskets

Cleaning of

the capacitive

humidity sensing element

Damaging influences

This information is based on current knowledge and is intended to provide details of our products and their possible applications. It

does not, therefore, act as a guarantee of specific properties of the products described or of their suitability for a particular applica-

tion. It is our experience that the equipment may be used across a broad spectrum of applications under the most varied conditions

and loads. We cannot appraise every individual case. Purchasers and/or users are responsible for checking the equipment for

suitability for any particular application. Any existing industrial rights of protection must be observed. The quality of our products is

guaranteed under our General Conditions of Sale. Data sheet DW_e. Issue: June 2018. Subject to modifications.

Galltec+Mela

D Series_DW

page 10 of 10

Install the sensor at a place where characteristic levels of humidity occur. The measu-

ring chamber should be located in streaming air. Avoid installation next to heaters,

doors or on outer walls. Avoid places exposed to the sun.

Do not position the sensor where ingress of water could occur.

To close the housing securely turn screw until dead stop.

We recommend that you lay the connection lines in a loop so that any water that

may be present can run off.

Not reaching the given minimum air speed can lead to measurement errors.

The electrical connection must be carried out by qualified personnel only.

The sensor contains sensitive electrical components. When opening the housing,

make sure you comply with the electrostatic discharge precautions (ESD).

Please pay attention to the ohmic resistance according to the operating voltage (see

diagram on page 2) when using sensors with a current output. Else measurement

errors may occur.

Lines to and from the sensor must not be installed parallel to strong electromagnetical

fields.

If there is any chance of an electrical surge, please install surge protection devices.

Dew formation and splashes do not damage the sensor, although measurement

readings are corrupted until all moisture on and around the sensing element has

dried up completely.

If necessary, soiled filters can be screwed off and rinsed carefully. Bear in mind the

sensors wil not measure accurately until filters are completely dry. Please do not

touch the highly sensitive humidity sensing element. Please ensure that the tempe-

rature sensing element does not touch the sensitive surface of the humidity sensing

element.

Loose dust can be carefully cleaned off the humidity sensing element using distilled

water or by blowing the dust carefully off. Please do not touch the highly sensitive

humidity sensing element. Please ensure that the temperature sensing element does

not touch the sensitive surface of the humidity sensing element.

Depending on type and concentration, agents that are corrosive and contain solvents,

can result in faulty measurements and can cause the sensor to break down.

Substances deposited on the sensor (e. g. resin aerosols, lacuer aerosols, smoke

deposits etc.) are damaging as they eventually form a water-repellent film.