Wika TR75 Manual do Utilizador descarregar pdf (Página 17)

11325232.04 01/2014 GB/D/F/E

WIKA operating instructions DiwiTherm

, model TR75 17

Typical mounting situation with contact bulb

■

Mounting on pipes

The geometry of the contact bulb has been

designed for pipes with external diameters

between 20 and 160 mm. For xing the

contact bulb to the pipe, pipe clamps are

sucient. The contact bulb should have

direct metallic contact with the measuring

point and have rm contact with the surface

of the pipe. Where temperatures under

200 °C are expected, a heat conductive

paste can be used to optimise the heat

transmission between contact bulb and pipe.

Insulation must be applied at the mounting

point to avoid error due to heat loss. This

insulation must have sucient temperature

resistance and is not included in the scope of delivery.

Measuring

insert

Thermowell

Pipe clamp mounting

Lagging *

* Lagging mandatory!

6. Commissioning, operation

DiwiTherms

must only be operated with an additional thermowell.

Exception: Axial cable outlet (for panel mounting) or version with contact bulb.

Typical mounting situation with thermowell

6. Commissioning, operation

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Wika TR75 Manual do Utilizador Página 17