HLC 400 Marine And Offshore Level Probe

HLC 400 Level Sensor

The HLC 400 uses a capacitive ceramic sensing element to measure hydrostatic pressure and convert it into an accurate liquid level signal. Developed for service and storage tanks, the probe is particularly suited to challenging marine and offshore duties where dependable performance, resistance to overpressure and long term measurement stability are required. Its compact 39.5 mm diameter construction supports installation in ballast tanks, storage tanks and other submerged level monitoring locations.

The stainless steel 316L housing is available with an optional CuNi10Fe1Mn housing for improved resistance to seawater. A choice of ceramic diaphragm, seal and mounting options enables the HLC 400 to be configured for a wide variety of compatible fluids and operating conditions. The probe is available with 4 to 20 mA output, IP68 ingress protection and optional intrinsic safety protection. Marine approvals from Lloyd’s Register, DNV, ABS and CCS support its use in shipbuilding and offshore applications.

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SKU HLC 400 Category

HLC 400 Ceramic Level Probe Features

  1. Marine Certified Level Measurement
    The HLC 400 is designed for shipbuilding and offshore applications and is supported by Lloyd’s Register, DNV, ABS and CCS certification options.

  2. Capacitive Ceramic Sensing Element
    The ceramic sensor provides robust hydrostatic pressure measurement with high resistance to overload and excellent compatibility with a wide range of liquid media.

  3. Wide Range Of Hydrostatic Level Measurements
    Standard measuring ranges extend from 0 to 0.4 mH₂O up to 0 to 200 mH₂O, allowing the probe to be selected for shallow tanks, deep tanks and storage vessels.

  4. Reliable Accuracy And Long Term Stability
    Standard accuracy is up to ±0.25% of span, with an optional accuracy of up to ±0.1% of span for nominal pressures from 0.6 bar. Long term stability is specified at up to ±0.1% of span per year.

  5. Seawater Resistant Material Option
    The standard housing is stainless steel 316L, while the CuNi10Fe1Mn option provides enhanced resistance to seawater for demanding marine installations.

  6. High Temperature Measurement Capability
    The HLC 400 supports permissible medium, electronics and ambient temperatures from Minus 25°C to 125°C, subject to the selected cable sheath and seal materials.

  7. Reliable Submerged Installation Protection
    IP68 protection, a shielded cable with an integrated atmospheric reference tube and a removable POM C protection cap support dependable operation in submerged environments.

  8. Flexible Safety And Installation Options
    Optional Ex ia intrinsic safety protection is available for gas hazardous areas. Screw in, flange and stainless steel pipe mounting arrangements provide installation flexibility.

HLC 400 Hydrostatic Level Measurement Applications

The HLC 400 is suited to continuous level measurement in marine and offshore environments where tank contents, saltwater exposure, changing operating conditions and safety requirements demand a robust submerged level probe. Its ceramic sensing technology and selectable material options also make it suitable for industrial water and compatible liquid storage applications.

Suitable applications include:

  • Ballast tank level monitoring

  • Ship draught and position monitoring

  • Marine service tanks

  • Offshore storage tanks

  • Seawater handling systems

  • Desalination plants

  • Drinking water abstraction systems

  • Freshwater storage tanks

  • Industrial water tanks

  • Process liquid storage vessels

  • Open tank level measurement

  • Hazardous area liquid level installations

HLC 400 Marine Level Transmitter Technical Specifications

SpecificationDetails
Product ModelHLC 400
BrandSENSVISION
Product TypeMarine and offshore hydrostatic level probe
Measuring PrincipleCapacitive ceramic pressure sensor
Nominal Level Ranges0 to 0.4, 0.6, 1, 1.6, 2.5, 4, 6, 10, 16, 25, 40, 60, 100, 160 and 200 mH₂O
Nominal Pressure Ranges0.04 to 20 bar
Pressure Reference OptionsGauge, sealed gauge and absolute
Sealed Gauge And Absolute RangesAvailable from 1 bar
Overpressure Resistance2 to 45 bar, depending on selected pressure range
Maximum Ambient Housing Pressure40 bar
Standard Output Signal4 to 20 mA, two wire
Standard Supply Voltage9 to 32 VDC
Intrinsic Safety Supply Voltage14 to 28 VDC
Rated Supply Voltage24 VDC
Standard AccuracyUp to ±0.25% of span
Optional AccuracyUp to ±0.1% of span for nominal pressure from 0.6 bar
Long Term StabilityUp to ±0.1% of span per year
Turn On Time700 ms
Mean Response TimeLess than 200 ms
Maximum Response Time380 ms
Measuring Rate5 measurements per second
Thermal ErrorUp to ±0.1% of span per 10 K
Compensated Temperature RangeMinus 20°C to 80°C
Permissible Medium, Electronics And Ambient TemperatureMinus 25°C to 125°C, subject to cable sheath and seal selection
Storage TemperatureMinus 40°C to 125°C
Housing MaterialStainless steel 1.4404, equivalent to 316L, or optional CuNi10Fe1Mn
Standard Diaphragm MaterialCeramic Al₂O₃ 96%
Optional Diaphragm MaterialCeramic Al₂O₃ 99.9%
Standard Seal MaterialFKM
Optional Seal MaterialsEPDM or FFKM
Protection Cap MaterialPOM C
Cable SheathTPE U, blue, 7.4 mm diameter
Ingress ProtectionIP68
Current ConsumptionMaximum 21 mA
WeightMinimum 650 g without cable
Housing Diameter39.5 mm
Electrical ProtectionPermanent short circuit protection and reverse polarity protection
Electromagnetic CompatibilityIn accordance with EN 61326 and DNV requirements
Optional Temperature ElementPt100, three wire, for 4 to 20 mA versions with cable length up to 5 m
Optional Explosion ProtectionEx ia for gas hazardous areas
Marine Approval OptionsLloyd’s Register, DNV, ABS and CCS

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