Vaisala HMT360Series Guide de l'utilisateur télécharger pdf (Page 21)

Chapter 3 _______________________________________________________________ Installation

VAISALA_______________________________________________________________________ 19

CHAPTER 3

INSTALLATION

This chapter provides you with information that is intended to help you

install this product.

General Installation Instructions

Mounting the Probe Cable in Gas Group

IIC Spaces

NOTE

The following applies only to installation within the EU!

The following instructions shall be followed to fulfil the specifications of

the EN50284 for nonconductive layer of the probe cable:

- Never mount or handle the probe cable when hazardous gases are

present.

- For achieving a conductive shield, cover the probe cable with

conductive material like metal or conductive tape or mount the probe

cable in a metal conduit.

- Assure that the conductive shield fulfils requirements of the standard

EN50284 (resistance less than 1 GΩ) and make sure that it can not come

loose in any operation situation.

WARNING

During the installation work of the probes in gas group IIC areas

(requiring category I devices), it has to be guaranteed that even in fault

cases sparks generated by impacts or friction on the surface of the housing

can never occur.

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Vaisala HMT360Series Guide de l'utilisateur Page 21