The Shridhan HLX Series comprises Hydrostatic Level Transmitters for continuous liquid level measurement in ventilated tanks.
The level probe uses a piezoresistive sensor with a titanium membrane and measures hydrostatic pressure to determine liquid level, with measurement unaffected by electrical medium properties or foam formation.
Available with 4-20mA, 2-wire output, optional HART and MODBUS (RS485), titanium construction and IP68 protection for water, sewage, swimming pools, ballast tanks and chloride-containing media.
✅ Genuine Shridhan product with manufacturer warranty
✅ ProSens Automation — Coimbatore, Erode & Salem
The Shridhan HLX Series Hydrostatic Level Transmitter is designed for continuous liquid level measurement in ventilated tanks and vessels.
The HLX measures hydrostatic pressure using a piezoresistive sensor with a titanium membrane. The surrounding pressure is compensated through an integrated pressure-equalization hose inside the cable, allowing the transmitter to measure liquid level accurately in ventilated tanks.
The transmitter is designed for applications where the liquid may contain foam or where electrical properties of the medium can vary. The brochure also specifies a titanium version for high chemical resistance and a front-flush membrane arrangement for highly viscous media.
The HLX provides a 4-20mA, 2-wire output, with HART and MODBUS (RS485) available as optional communication interfaces.
These features are stated in the HLX brochure's application, customer-benefit and special-feature sections. :contentReference[oaicite:1]{index=1}
The HLX is installed vertically and hangs from its cable inside the tank. The sensor detects the hydrostatic pressure produced by the liquid column above the measuring membrane.
Because the cable contains an integrated pressure-equalization hose, the transmitter can compensate for surrounding atmospheric pressure while measuring the hydrostatic pressure generated by the liquid.
The piezoresistive sensor converts the pressure into an electrical signal, which is provided as a standardized 4-20mA, 2-wire output.
| Component | Function |
|---|---|
| Titanium Measuring Membrane | Transfers hydrostatic pressure from the liquid to the sensing element. |
| Piezoresistive Sensor | Measures the applied hydrostatic pressure. |
| Pressure Compensation Hose | Compensates for surrounding pressure through the integrated cable. |
| Electronics | Converts the measured pressure into the standardized current output. |
The brochure specifies the piezoresistive sensor, titanium membrane, synthetic-oil pressure transfer medium and vertical/hanging installation. :contentReference[oaicite:2]{index=2}
| Parameter | Specification |
|---|---|
| Measuring Principle | Piezoresistive sensor with titanium membrane |
| Pressure Transfer Medium | Synthetic oil |
| Admissible Load Changes | >10 million, 0% to 100% measuring range |
| Reference Conditions | According to DIN 16086 and DIN 61298 |
| Mounting | Vertical / hanging from the cable |
| Output | 4-20mA, 2-wire |
| Communication | HART & MODBUS (RS485) optional |
| Step Response | 2 ms |
| Power Supply | DC 16-28V, nominal 24V |
| Maximum Current Consumption | 23 mA |
| Electrical Circuit | SELV |
| Reverse Voltage Protection | Yes |
These specifications are taken from the HLX technical-data section on page 3. :contentReference[oaicite:3]{index=3} :contentReference[oaicite:4]{index=4}
| Parameter | Specification |
|---|---|
| Cable Type | 6-core, shielded cable with integrated pressure compensation hose |
| Cable Size | AWG 24 with ferrules |
| Outer Sheath | FEP |
| Compensation Hose | PA |
| Colour | Black |
| Outer Diameter | Approximately 8.4 mm |
| Conductor Cross Section | 0.25 mm² |
| Minimum Bending Radius — Moving | 140 mm |
| Minimum Bending Radius — Fixed | 70 mm |
| Tensile Force | 4000 N |
| Mass | Approximately 90 g/m |
| Admissible Temperature | -40 to +70°C, depending on the medium |
| UV Resistance | Yes, according to DIN ISO 4892-2 |
The cable specifications are provided on page 3 of the brochure. :contentReference[oaicite:5]{index=5}
| Component | Material / Specification |
|---|---|
| Protective Cap | PVC |
| Process Connection | Titanium Grade 2 |
| Measuring Membrane | Titanium Grade 2 |
| Case | Titanium Grade 2 |
| Shrink Tubing | Polyolefin |
| Mass without Cable | 109 g |
| Probe Diameter | 27 mm |
The mechanical construction and dimensions are shown on pages 4 and 5. The page 5 drawing also identifies the cable length as customer-selectable. :contentReference[oaicite:6]{index=6} :contentReference[oaicite:7]{index=7}
| Measuring Range | Pressure Type | Linearity | Accuracy at 20°C | Overload | Burst Pressure |
|---|---|---|---|---|---|
| 0–0.1 bar | Relative | 0.2% MSP | 1.2% MSP | 0.3 bar | 0.4 bar |
| 0–0.16 bar | Relative | 0.2% MSP | 0.8% MSP | 0.48 bar | 0.64 bar |
| 0–0.25 bar | Relative | 0.2% MSP | 0.8% MSP | 0.75 bar | 1 bar |
| 0–0.4 bar | Relative | 0.2% MSP | 0.7% MSP | 1.2 bar | 1.6 bar |
| 0–0.6 bar | Relative / Absolute | 0.2% MSP | 0.7% MSP | 1.8 bar | 2.4 bar |
| 0–1 bar | Relative / Absolute | 0.2% MSP | 0.6% MSP | 3 bar | 4 bar |
| 0–1.6 bar | Relative / Absolute | 0.25% MSP | 0.5% MSP | 4.8 bar | 6.4 bar |
| 0–2.5 bar | Relative / Absolute | 0.25% MSP | 0.5% MSP | 7.5 bar | 10 bar |
| 0–4 bar | Relative / Absolute | 0.25% MSP | 0.5% MSP | 12 bar | 16 bar |
| 0–6 bar | Relative / Absolute | 0.25% MSP | 0.5% MSP | 18 bar | 24 bar |
| 0–10 bar | Relative / Absolute | 0.25% MSP | 0.5% MSP | 30 bar | 40 bar |
The measuring-range table is provided on page 4 of the brochure. MSP means measuring span, as defined in the notes on page 5. :contentReference[oaicite:8]{index=8} :contentReference[oaicite:9]{index=9}
| Parameter | Specification |
|---|---|
| Medium Temperature | 0 to 50°C |
| Storage Temperature | -20 to +70°C, dry |
| Protection Type | IP68 |
| EMC Interference Emission | Class B |
| EMC Interference Immunity | Industrial requirements |
| Ignition Protection Type Gb | T4: -40 to +85°C; T5: -40 to +70°C; T6: -40 to +55°C ambient |
| Ignition Protection Type Db | T100°C: -40 to +85°C; T85°C: -40 to +70°C; T70°C: -40 to +55°C ambient |
The environmental data and ignition-protection temperature classes are specified on page 4. :contentReference[oaicite:10]{index=10}
The HLX is designed for vertical installation by hanging from the cable. The brochure also provides accessory arrangements for installation and cable management.
| Accessory | Purpose / Brochure Reference |
|---|---|
| Cable Clamp | Shown as an installation accessory for the level-probe cable. |
| Terminal Box with Pressure Compensation | Shown as an accessory arrangement incorporating pressure compensation. |
| Sealing Screw | Shown as an accessory on page 6. |
The accessory dimensions are illustrated on page 6 of the brochure. :contentReference[oaicite:11]{index=11}
| Application | Typical Use |
|---|---|
| Pumping Stations | Continuous liquid level measurement and level control. |
| Water Treatment | Level monitoring in water-treatment tanks and systems. |
| Shipbuilding / Ballast Water | Liquid level measurement in ballast water tanks. |
| Sewage Sector | Continuous level measurement in sewage applications. |
| Swimming Pools | Level measurement in splash-water containers. |
| Chloride-Containing Media | Applications requiring resistance to chloride-containing liquids. |
| Highly Viscous Media | Front-flush membrane configuration for harsh and highly viscous media. |
These applications are explicitly listed in the HLX brochure. :contentReference[oaicite:12]{index=12}
The standard electrical configuration is a 4-20mA, 2-wire connection with a DC 24V rated supply. The connection diagram on page 7 shows the level probe connected through a power supply to controller, display and recorder equipment.
| Connection | Cable Assignment |
|---|---|
| + Supply / Signal | White |
| 0V / Signal | Gray |
| Shielding | Black |
The brochure specifically cautions that the electrical connection should be performed according to the installation instructions or operating manual and that connected devices should be grounded to the same potential. :contentReference[oaicite:13]{index=13}
The brochure does not provide a separate standard packing list. Accessories such as the cable clamp, terminal box with pressure compensation and sealing screw are shown separately and should therefore be confirmed with the selected quotation.
The Shridhan HLX Series is available through ProSens Automation for continuous liquid level measurement in water, sewage, pumping, swimming-pool, shipbuilding and other compatible applications.
For correct selection, share the tank depth, liquid, required measuring range, pressure type, temperature, specific application, cable length and communication requirement.
ProSens Automation — Coimbatore, Erode & Salem
Shipping available across India.
The HLX Series is a hydrostatic level transmitter designed for continuous liquid level measurement in ventilated tanks.
The HLX measures the hydrostatic pressure generated by the liquid column using a piezoresistive sensor with a titanium membrane. The pressure is converted into a standardized 4-20mA output.
The standard output is 4-20mA, 2-wire. HART and MODBUS (RS485) are specified as optional communication interfaces.
The basic type uses DC 16-28V, with a nominal supply voltage of 24V.
The brochure lists a measuring range of 0-0.1 bar relative pressure as the lowest specified range.
The brochure lists 0-10 bar relative/absolute pressure as the highest specified measuring range.
Yes. The brochure specifically describes the level probe as designed for liquids containing chlorides and lists shipbuilding, swimming pools, water and sewage management among the applications.
Yes. The sewage sector is explicitly listed as an application.
Yes. The brochure specifies a front-flush membrane configuration as an alternative for highly viscous media.
The brochure provides ignition-protection specifications for Gb and Db configurations and states that approvals are needed for particular shipbuilding requirements and explosion protection.
The HLX technical data specifies IP68 protection.
Yes. The cable incorporates an integrated pressure-equalization hose for surrounding-pressure compensation.
Yes. The dimensions section states that cable length is according to customer preference.
