WIKA TR10-J - Manual (Page 16)

11208287.06 10/2013 GB/D/F/E
16 WIKA operating instructions resistance thermometers, thermocouples
GB
WIKA order no. Designation Suitable for threads
11349981 per DIN 7603 Form C 14 x 18 x 2 -CuFA G ¼, M14 x 1,5
11349990 per DIN 7603 Form C 18 x 22 x 2 -CuFA M18 x 1,5, G ⅜
11350008 per DIN 7603 Form C 21 x 26 x 2 -CuFA G ½, M20 x 1,5
11350016 per DIN 7603 Form C 27 x 32 x 2.5 -CuFA G ¾, M27 x 2
11367416 per DIN 7603 Form C20 x 24 x 2 -CuFA M20 x 1,5
1248278 per DIN 7603 D21.2 x D25.9 x 1.5 -Al G ½, M20 x 1,5
3153134 per DIN 7603 Form C D14.2 x D17.9 x 2 -StFA G ¼, M14 x 1,5
3361485 per DIN 7603 Form C D33.3 x D38.9 x 2.5 -StFA G 1
Legend:
CuFA = Copper, max. 45 HB a , with a filling made of asbestos-free sealing material
Al = Aluminium Al99
F11, 32 to 45 HB b
StFA = Soft iron, 80 to 95 HB a , with a filling made of asbestos-free sealing material
6.4 Tapered threads (NPT)
Connections with tapered threads (NPT) are self-sealing and normally must not be sealed. It
should be checked whether it may be necessary to seal them additionally with PTFE tape or
hemp. The threads must be lubricated with a suitable lubricant before fitting.
Tighten the threads by hand when carrying out the final assembly on the plant. This will
correspond to the delivery status of the premounted components. The final tightening and sealing
must be made with a spanner (1.5 to 3 rotations).
7. Maintenance and cleaning
7.1 Maintenance
These thermometers are maintenance-free.
Repairs must only be carried out by the manufacturer.
7.2 Cleaning
CAUTION!
■ Before cleaning, correctly disconnect the instrument from the pressure supply,
switch it off and disconnect it from the mains.
■ Clean the instrument with a moist cloth.
■ Electrical connections must not come into contact with moisture.
■ Wash or clean the dismounted instrument before returning it, in order to protect
personnel and the environment from exposure to residual media.
■ Residual media in dismounted instruments can result in a risk to personnel, the
environment and equipment. Take sufficient precautionary measures.
For information on returning the instrument see chapter 9.2 “Return”.
6. Commissioning, operation / 7. Maintenance and cleaning