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Klay Instruments

Hydrobar-S

Microprocessor-based level transmitter with 0.04–4 bar range, HART-compatible 4–20 mA output, and marine/explosion-safe certifications.

The Hydrobar-S delivers precise level measurement across industries requiring robust, certificated instrumentation. Engineered with premium materials (AISI 316L, optional Hastelloy C or Tantalum), it operates reliably from –30 °C to +70 °C and achieves ±0.1% accuracy with a 10:1 turndown ratio. Field-programmable via integral push buttons and display, it supports 4–20 mA 2-wire transmission with optional HART protocol, powered by 12–36 Vdc supplies. Multiple connection options—threaded, flange, hygienic, and wall-mount—accommodate diverse installations, while IP68/IP66 protection and approvals (ATEX, IECEx, Lloyd's, DNV, ABS, SIL2) ensure safe deployment in hazardous and marine environments.

Specifications

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

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Continuous and point level measurement for liquids and solids