Choose an appropriate differential pressure type bimetallic thermometer what conditions should be considered

Throttling loading device selection of 8 qm magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

throttling of the bimetallic thermometer main advantages are simple structure, convenient use, long service life. Standard throttle device design and manufacture according to the provisions of the state technical standards, used without calibration, this is other bimetallic thermometer is difficult to have. Its wide adaptability to various conditions of single phase fluid, within the scope of a 50 to 1000 mm diameter can be used. It is the deficiency of the narrow range, generally for ( 3 - 4) : 1, the pressure loss is bigger, need to consume a certain amount of power; Strict in installation, need enough long straight section. Even so, it is still today the most widely used flow measuring instrument. 8 qm magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

throttling device is commonly used orifice. Followed by your mouth, venturi application must be less, should according to the specific circumstances of different, first of all, as far as possible choose standard throttle device, when forced to choose special throttling device. From the perspective of the use of specific choice of throttling device, the following aspects should be taken into account. 8 qm magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

( 1) Allow the pressure loss. Orifice of head loss is bigger, can reach a 90% 50% of the maximum differential pressure. Magnetic flap nozzle also can reach 8 qm thermometer thermometer | | glass tube floating ball | | glass thermometer thermometer two-color thermometer

30% ” 8 o %, venturi tube is 10% 20%. According to the production fluid way delivery pressure and the pressure loss is available on the selected throttling held 8 qm magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

the types of buy, if the pressure loss is allowed permission, priority should be given to choose the orifice plate. 8 qm magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

( 2) The processing difficulty. Processing manufacturing and assembly difficulty, the simplest orifice, nozzle, venturi tube is the most complex, the highest cost is also a venturi tube. So in general should choose orifice. 8 qm magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

( 3) The measured medium corrosive. If the medium to be measured for the throttling device, strong erosion and abrasion of had better choose 8 qm venturi magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer,

or nozzle orifice is not appropriate, the reason was that the orifice import sharp edge easy to wear round edge, will seriously affect the measurement accuracy. 8 qm magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

( 4) On site installation conditions. Straight pipe length is limited production conditions. Also, as long as conditions permit should choose orifice, although it requires the straight pipe length is longer than the other; The second is the nozzle. Usually choose less venturi tube. 8 qm magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

with magnetic flap thermometer thermometer copyright disclaimer: 8 qm magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

(1) all this indicate & quot; Source: & other; Jiangsu thermometer factory automation & throughout; All works, the copyright belongs to jiangsu thermometer factory automation instrument co. , LTD. , must be reproduced please indicate jiangsu thermometer factory automation instrument co. , LTD. , the WWW. 517席。 com。 Violators we will pursue relevant legal responsibility 8 qm magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

8 qm magnetic flap | | glass thermometer thermometer floating ball | | glass thermometer thermometer two-color thermometer

8 qm magnetic flap | | glass thermometer thermometer floating ball thermometer | | double color glass thermometer thermometer