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The APRE-2000 transmitter is applicable to the measurement of differential pressure of gases, vapors and liquids. The active element is a piezoresistant silicon sensor separated from the medium by separating diaphragms and a specially selected type
of manometric fluid. The special design of the active sensing element ensures that it is able to withstand pressure surges and overloads of up to 250 or 320 bar. Electronics in the casing with a degree of protection IP65, IP66.
Technical data
Metrological parameters
Accuracy Ł ±0,1% of calibrated range
Long term stability Ł accuracy for 3 years
(for the nominal measuring range) Ł 2 x accuracy for 5 years
Thermal compensation range -25…80°C
Zero shift error for static pressure
0,01% (FSO) / 10 bar for ranges no. 3, 4, 5, 6, 7
0,03% (FSO) / 10 bar for range no. 8
0,06% (FSO) / 10 bar for ranges no. 1, 2
Zeroing the transmitter in conditions of static pressure can eliminate
this error.
Additional electronic damping 0…30 s
Error due to supply voltage changes 0,002% (FSO) / V
Electrical parameters
Power supply 7,5...55 VDC (Ex ia 7,5...30 VDC)
Output signal 4...20 mA + HART
Resistance required for communication min. 240 W
Materials
Wetted parts SS316L
Diaphragms SS316L
Casing SS304
Operating conditions
Operating temperature range (ambient temp.) -25...85°C
Exi a version -25…80°C
Medium temperature range -25...120°C
PED version -25...100°C
over 120°C – measurement with use an impulse line or diaphragm seals up to 100°C – version for 413bar static pressure
CAUTION: the medium must not be allowed to freeze in the impulse line or close to the process connection of the transmitter