Wika TR25 Manuel d'utilisateur télécharger pdf (Page 14)

14073045.01 10/2013 GB/D

WIKA operating instructions model TR25 (Ex i)

6. Commissioning, operation

CAUTION!

Mount the resistance thermometer from below when a horizontal pipeline is only

partially lled in operation.

Before commissioning the thermowell, clean it in accordance with the cleaning

specications of the plant.

WARNING!

Use appropriate sealing material. The sealing must be checked regularly by the plant

operator.

The thermowell must not be bent or altered in order to mount it. The tting should be carried

out such that there can be no damage to the thermowell as a result of the plant operation or the

operator. If necessary, one of the thermowell/pipeline mountings mentioned below (e.g. with

pipe clamps) will be required. In particular, the neck should be secured by appropriate methods

against bending.

7. Information on mounting and operation in hazardous areas (Europe)

7.1 General information on explosion protection

The requirements of the 94/9/EC (ATEX) directive must be followed. Additionally the

specications of the respective national regulations concerning Ex usage apply.

A) The responsibility for classication of zones lies with the plant operator and not the

manufacturer/supplier of the equipment.

B) The plant operator guarantees, and is solely responsible, that all thermometers in use are

identiable with respect to all safety-relevant characteristics. Damaged thermometers may not

be used. Repairs may only be completed using original spare parts from the original supplier;

otherwise the requirements of the approval are not fullled.

The manufacturer shall not be responsible for constructional modications after delivery of the

instruments.

C) If a component of electrical equipment, on which the explosion protection depends, is

repaired, then the electrical equipment may only be put back into use, after an authorised

expert has stated that it corresponds to the fundamental characteristics of the requirements for

explosion protection. In addition this expert must provide a certicate for this and provide the

equipment with a test mark.

D) Item C) shall not apply if the component was repaired by the manufacturer in accordance with

the requirements and regulations.

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Wika TR25 Manuel d'utilisateur Page 14