Smart Differential Pressure Transmitter – Aplisens APRE-2000 PD Series


  • 4…20 mA output signal + HART protocol
  • ATEX Intrinsic safety
  • Static pressure limit up to 420 bar
  • Accuracy 0.1%
  • Gold plated diaphragms (Au)
  • Wetted parts material Hastelloy C276

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, 320 or 413 bar. Electronics in the casing with a degree of protection IP65, IP66.


Metrological parameters
Accuracy ≤ ±0.1% of the calibrated range
Long-term stability
(for the nominal measuring range)
≤ accuracy for 3 years
≤ 2 x accuracy for 5 years
HS version: ≤ accuracy for 6 years
or ≤ 2 x accuracy for 10 years
Thermal error < ±0,08% (FSO) / 10°C
max. ±0.3% (FSO) in the whole compensation range
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, 9
0,03% (FSO) / 10 bar for range no. 8
0,06% (FSO) / 10 bar for ranges no. 1, 2
0,01% (FSO) / 10 bar for ranges no. 2, 8 in HS version
 0,02% (FSO) / 10 bar for range no. 10
Zeroing the transmitter in conditions of static pressure can eliminate this error.
Response time 16…230ms (programmable)
Additional electronic damping 0…60 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 Ω
Wetted parts SS316L, Hastelloy C276
Diaphragms SS316L, Hastelloy C 276, Au
Casing SS304
Operating conditions
Operating temperature range (ambient temp.) -25…85°C
Exi a version -25…80°C
Medium temperature range  -25…120°C
over 120°C measurement with use an impulse line or diaphragm seals
up to 100°C PED version
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


Aplisens APRE-2000 PD Smart Differential Pressure Transmitter-DpstarGroup