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Intelligent Level Transmitter Hydrobar-I with metallic diaphragm

The Hydrobar-I is a microprocessor based adjustable level transmitter with cable extension. Application for level measurement of water, wastewater and sludge. This transmitter is remotely rangeable using the HART protocol.



  • Adjustable with HART protocol using PC or HHT
  • Strong flush diaphragm
  • Active temperature compensation
  • Perfect long term stability


Technical details

 Measuring range min. max.   0,04…15 bar
 Process temperature  -10 °C…+70 °C
 Accuracy  0,1 % of adjusted span
 Process connections  Cable hanger, mounting bracket, threaded and flanged connections 
 Output  4-20 mA 2-wire, option HART protocol
 Adjustment  With HART protocol using PC or HHT
 Power supply  12 - 36 Vdc (Ex: 12 - 26,5 Vdc)
 Protection  IP68
 Diaphragm material  AISI 316L, option Hastelloy C, Tantalum or Gold plated
 Sensor materiaal  AISI 316L, option Hastelloy C
 Cable material  Polyethylene, option Hytrel or PTFE

 Explosion safety: ATEX Ex-ia, IECEx Ex-ia, EAC Ex-ia
 Marine approvals: Lloyd's, DNV, BV, CCS, ABS,
 Functional safety: SIL2
 Sanitary standard: 3-A



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.



  • Cable hanger
  • Junction boxes


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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