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All stainless differential pressure transmitter for flow measurement 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. Very suitable for realising a simple but accurate flow measurement. The difference in pressure over a Orifice plate, Venturi or Pitot tube can be transformed to a flow rate using the square root function of this transmitter.



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



 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

 Explosion safety: ATEX Ex-ia and IECEx Ex-ia (Optional T5 and T6)



Differential pressure measurement on gasses, steam and liquids in all industries based on the differential pressure over a Orifice plate, Venturi or Pitot tube.


AccessoriesKlay Instruments 3- en 5-weg manifold

  • 3-way manifold
  • 5-way manifold


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About Klay

Dutch manufacturer of process instrumentation. A flexible organisation and wide diversity in design of products. Our instruments are being used for industrial automation.


Klay Instruments B.V.
Nijverheidsweg 5
7991 CZ Dwingeloo
Tel +31 521 591 550
E-mail info@klay.nl