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Intelligent Level Transmitter Hydrobar-S with metallic diaphragm

The Hydrobar-S is a microprocessor based level transmitter with cable or tube extension. Application for level measurement of water, wastewater and sludge. This transmitter can easily be programmed with three push buttons and display.



  • Easy adjustable using 3 push buttons, without test pressure
  • Strong flush diaphragm
  • Active temperature compensation
  • Tank linearisation
  • Adjustable damping


Technical details

 Measuring range min. max.  0,04…4 bar
 Process temperature  -10 °C…+70 °C Sensor body and cable
 Accuracy  0,1 % of adjusted span
 Process connections  Cable hanger, wall mounting bracket, flange, hygienic connections, threaded connections
 Turn down  10:1
 Output  4-20 mA 2-wire, option HART protocol
 Adjustment  With 3 push buttons and display, without test pressure or with HART
 Power supply  12 - 36 Vdc (Ex: 12 - 26,5 Vdc)
 Protection  IP68 (Submersible parts)
 IP66 (Electronics housing)
 Ambient temperature  -30 °C...+70 °C Electronics housing
 Diaphragm material  AISI 316L, option Hastelloy C, Tantalum or Gold plated
 Sensor material  AISI 316L, option Hastelloy C
 Cable Material  Polyethylene, option Hytrel or PTFE
 Electronics housing  AISI 304, option AISI 316

 Explosion safety: ATEX Ex-ia, IECEx Ex-ia, EAC Ex-ia
 Marine approvals: Lloyd's, DNV, BV, CCS, ABS,
 Functional safety: SIL2



Level measurement of drinking water, surface water, wastewater and sludge. Often used by water boards and water works. Various industrial applications like level measurement in storage tanks. Level measurement of ballast water, drinking water and oil on ships.


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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