WIKA TR25 - Handbuch (Seite 14)

14073045.01 10/2013 GB/D
14 WIKA operating instructions model TR25 (Ex i)
GB
6. Commissioning, operation
CAUTION!
Mount the resistance thermometer from below when a horizontal pipeline is only
partially filled in operation.
Before commissioning the thermowell, clean it in accordance with the cleaning
specifications 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 fitting 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
specifications of the respective national regulations concerning Ex usage apply.
A) The responsibility for classification 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
identifiable 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 fulfilled.
The manufacturer shall not be responsible for constructional modifications 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 certificate 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.
6. Commissioning, operation / 7. Information on mounting ...