DP4000 pressure 400x400
All stainless differential Pressure Transmitter DP-4000

The DP-4000 is an advanced differential pressure transmitters with a compact and robust stainless steel housing. This microprocessor based transmitter can easily be programmed using the unique programming button and display.

  • All stainless steel housing
  • Adjustable with unique programming button
  • Graphic display with backlight
  • Local indicator (option)
  • Intrinsically safe ATEX and IECEx: Ex ia IIC T6 Ga

Technical details

Measuring range min. max.  10 mbar…20 bar
Static pressure Max. 160 bar option 250 bar
Process temperature -20 °C…+100 °C
Accuracy 0,075 % option 0,065 %
Process connections 1/4 -18 NPT female, option ½”NPT
Turn down Max. 100:1
Output 4-20 mA 2-wire + HART protocol (version 7.0), Profibus PA
Adjustment With programming button and display, without test pressure or with HART
Display Multilingual, with bargraph, backlight and process temperature reading
Power supply 12 - 36 Vdc (Ex: 12 - 30 Vdc)
Protection IP66 (option IP68)
Ambient temperature -20 °C...+70 °C
Diaphragm material AISI 316L, option Hastelloy C, Tantalum or Gold plated
Wetted parts AISI 316L, option Hastelloy C
Material sensor gasket Viton, option PTFE or NBR
Electronics housing AISI 304, option AISI 316
Certificates/approvals Explosion safety: ATEX Ex-ia and IECEx Ex-ia (Optional T5 and T6)


Differential pressure measurement on gasses, steam and liquids in all industries. Level measurement in closed tanks. For this the internal tank linearisation can be used. The DP-4000 can also be supplied with chemical seals. Square root function on board for flow measurement.
Klay Instruments 3- en 5-weg manifold


  • 3-way manifold
  • 5-way manifold