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40 years klay instruments2018 - Klay Instruments 40 years

From pneumatic to intelligent transmitters

Klay Instruments has started manufacturing pneumatic 1:1 transmitters back in 1978. Several years later the first electronic transmitters where produced. And now in 2018 we are manufacturer of advanced microprocessor based transmitters completing a whole range of process instrumentation.

40 years of progress, quite a milestone.
In all these years however the main values have stayed:

  • Flush Diaphragm Technology
  • Temperature compensation
  • All stainless steel instruments
  • Flexibility

ISO 9001:2015 DEKRA certificate KLAY InstrumentsKlay Instruments is ISO 9001:2015 certified!

Klay Instruments is proud to announce that we are ISO 9001:2015 Certified.
We are successfully transitioned to the new standard for Quality Management.
We continue to deliver high quality process instrumentation and services to all of our customers.

iso 9001 2018 dekra certified klay instruments

See the ISO 9001:2015 Certificate here

klay instruments temperatuuropnemer tt 4000 02New: TT-4000

High end intelligent temperature transmitter

The Series 4000 have been extended with the intelligent temperature transmitter TT- 4000. This easy programmable temperature transmitter is the choice for accurate measuring and reading.
All stainless steel naturally and available with many different process connections.

Check out the details below:

  • All stainless steel
  • Accuracy 0.1% (optional 0.075%)
  • Easy adjustable with programming button
  • Standard graphic display with backlight
  • Output options HART, Profibus PA
  • Option ATEX / IECEx Ex-ia

Read all about this new accurate temperature transmitter

klay profibus 4000New: Profibus PA output

All Series 4000 transmitters now available with Profibus PA output

Our high end Series 4000, 4000-SAN and DP-4000 are now also available with Profibus PA output. This newly developed output replaces the Profibus PA output on the Series 2000 which is not available anymore.

The intelligent 4000 transmitters are all stainless steel. Easy programming with unique "one touch programming button" and multilingual display with backlight. Check out all types with Profibus.

Check out all types with Profibus:

Pressure > Series 4000
Pressure > Series 4000-SAN
Level > Series 4000
Level > Series 4000-SAN
Differential pressure > DP-4000

klay new differential pressure transmitter dp 4000New: Differential Pressure Transmitter DP-4000

'All stainless' differential pressure transmitter

Klay instruments has launched a new differential pressure transmitter. The new DP-4000 has a stainless steel housing as standard. This unique feature makes it very suitable for the food & dairy-, (petro)chemical and offshore industries.

The DP-4000 has a graphic multilingual display with backlight. Programming is easy with a "One touch programming button" and the display. The accuracy is 0.075 % and both HART protocols and a Square Root Function for flow measurement are standard on board.

Read all about the new DP-4000 Differential Pressure Transmitter

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