Vaisala HUMICAP HMT310 Guide de l'utilisateur télécharger pdf (Page 27)

Chapter 3 ________________________________________________________________ Installation

VAISALA ________________________________________________________________________ 27

0507-022

Figure 8 Vertical Mounting of Probe

The following numbers refer to Figure 8 above:

To be sealed

Insulate the cable

To be insulated

Let the cable hang loosely. This prevents condensed water

running to the sensor along the cable.

CAUTION

o not attach a heated probe (HMT317) to metal structures to avoid

condensation problems caused by heat conduction along the metal.

If the process temperature is much higher than that of the environment,

the whole probe and preferably a piece of the cable must be inside the

process. This prevents measuring inaccuracies caused by heat conduction

along the cable.

When mounted on the side of a duct or channel, the probe must be

inserted from the side of the duct. If this is not possible and the probe

must be inserted from the top, the point of entry must be carefully

insulated.

HMT313 for General Use

The HMT313 is a small size (d = 12mm) general-purpose probe suitable

for ducts and channels with the installation kit available from Vaisala.

The HMT313 has two probe versions for different measurement

environments:

- Probe with a flexible cable, suitable for environments up to 80 ºC

- Probe for environments up to 120 ºC

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Vaisala HUMICAP HMT310 Guide de l'utilisateur Page 27