CẢM BIẾN ÁP SUẤT DẠNG CHÊNH ÁP APLISENS MODEL APR-2000ALW or APR-2000

Application and construction

The differential pressure transmitter is applicable to the measurement of pressure differences of: gases, vapours and liquids in cases where it is necessary

to use seals and the pressure pulse source points may be several metres apart. Typical applications include the hydrostatic measurement of: levels in closed tanks,

densities and phase boundaries, and the measurement of a filter loss, pressure differences between media in pasteurisers etc. The available range of the diaphragm

seals allows measurement at great majority of media. The active element is a piezoresistant silicon sensor separated from the medium by a distance sealing

system. The special design of the measuring unit means that it can withstand pressure surges and overloads of up to 40 bar. The electronic circuits are enclosed in a casing with a degree of protection IP 65 or IP66.

Technical data

Accuracy _ ±0.1% (FSO)

The other parameters as given in the sheet for the smart differential pressure transmitter APR-2000ALW.

Sealing effect errors – as given in the relevant diaphragm seal sheet in chapter III (Diaphragm Seals), concerning the distance seal.

NOTE: The additional absolute zero error due to ambient temperature can be compensated by configuring the transmitter, seals and capillaries in accordance with

the recommendations on pages II/ 20 and II/ 21.

Electrical parameters As given in the sheet for the APR-2000ALW differential pressure transmitter.

Operating conditions

Operating temperature range (ambient temperature) -25...85°C

Exia, IS version: -25...80°C

Exd, XP version: -25...75°C

Medium temperature range – as given in the appropriate diaphragm seal sheet (remote seal)