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Submersible Level Transmitter Hydrobar with metallic diaphragm


The Hydrobar is a level transmitter with cable or tube extension. Application for level measurement of water, wastewater and sludge.



  • Strong flush diaphragm
  • Perfect long term stability
  • Fixed or adjustable range
  • Active temperature compensation


Technical details

 Measuring range min. max.   0,1…15 bar, adjustable or fixed range
 Process temperature  -10 °C…+70 °C Sensor body and cable
 Accuracy  0,2 % of adjusted span
 Process connections  Cable hanger, mounting bracket, threaded and flanged connections 
 Turn down  4:1
 Output  4-20 mA, 2-wire
 Adjustment  Zero and span adjustable internally only for adjustable version
 Power supply  12 - 36 Vdc (Ex: 13 - 26,5 Vdc and 17 - 26,5 Vdc for fixed range)
 Protection  IP68 (Submersible parts)
 IP66 (Electronics housing, adjustable version)
 Ambient temperature  -30 °C..+70 °C, Electronics housing adjustable version
 Diaphragm material  AISI 316L, option Hastelloy C or Gold plated
 Sensor body  AISI 316L
 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, CCS, BV, ABS, KR
 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