Pt100 explosion-proof heat resistance is how to install

Explosion-proof heat resistance of the installation points

1, in order to make the heat resistance of the measuring end and have good heat exchange between the measured medium, should choose the measuring point position, try to avoid the valve, elbow and pipe and equipment near the corner of installing heat resistance.

2, with a protection casing thermal resistance of heat transfer and heat loss, in order to reduce the measurement error, thermocouple and thermal resistance should have enough insert depth:

( 1) If is need to measure the temperature of flue gas, although the flue is 4 m in diameter, thermal resistor insertion depth of 1 m.

( 2) When measuring the original insertion depth of more than 1 m, shall be installed vertically, as far as possible or add racks and protect casing.

( 3) For thermal resistance temperature center fluid, usually should be measuring end is inserted into the pipe center ( Vertical or inclined installation) 。 As the current body of pipe diameter is 200 mm, the thermal resistance should choose insert depth 100 mm;

( 4) For high temperature and high pressure and high velocity of temperature measurement, Such as main steam temperature) , in order to reduce cases of fluid resistance and prevent cases break under the action of a fluid, can take protecting tube shallow inserted way or use hot shell heat resistance. Shallow inserted type thermal resistance to protect casing, and its depth into the steam pipe should be no less than 75 mm; On a hot resistance standard insert depth of 100 mm;

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