Commissioning, Operation; Safety Instructions For Internally Pressurised Thermowells And Measuring Instruments - WIKA TR25 Manual De Instrucciones

5. Commissioning, operation

5. Commissioning, operation
DANGER!
Danger to life caused by electric current
EN
Upon contact with live parts, there is a direct danger to life.
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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.
Use suitable sealing material. The sealing must be checked regularly by the plant manager.
Make sure that the thermowell is sufficiently grounded.
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 manager. 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.
5.1 Safety instructions for internally pressurised thermowells and measuring
instruments
Before installation, the operator should perform the suitability test for the particular
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application.
The thermowells and measuring instruments must be chemically and mechanically
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resistant against the process media and must exhibit the same mechanical strength
(pressure rating) as the vessel or pipeline.
The thermowells and the measuring instruments are not suitable for abrasive media.
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Assembly and disassembly must only be carried out once the system has been
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depressurised. Beware of hot surfaces and residual media!
Please observe and follow the permissible pressure and temperature limits for operation
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and the environment.
The permissible ambient temperature given by the manufacturer must not be exceeded.
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The definition of appropriate maintenance and inspection intervals will depend on the
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individual application and is to be defined by the operator.
Observe and follow the manufacturer´s specifications for installation, commissioning,
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operation, maintenance and inspection.
To mount in line with the relevant thread standards, suitable bolts, screws, etc. must be
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used.
To ensure the required sealing and trouble-free operation, appropriate sealings should
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be used during mounting.
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The instrument may only be installed and mounted by skilled personnel.
Operation using a defective power supply unit (e.g. short-circuit from the
mains voltage to the output voltage) can result in life-threatening voltages
at the instrument!
WIKA operating instructions model TR25 (Ex i)