HLS 320D Precision Submersible Level Probe Features
High Accuracy Digital Level Measurement
Active digital compensation supports accuracy of up to ±0.1% of span according to EN IEC 62828-2, helping deliver precise continuous hydrostatic level data.Detachable Sensor And Cable Assembly
The transmitter body connects to the cable assembly by a connector, allowing the sensor section to be changed separately to support efficient maintenance and stock management.Configurable Measurement Parameters
Electronic damping can be adjusted from 0 to 100 seconds, offset from 0 to 90% of span and span turn down up to 10:1 when the required software and interface are used.Stable Performance After Turn Down
Accuracy remains unchanged at turn down up to 5:1. Above 5:1, accuracy is up to ±(0.1 + 0.015 × turn down)% of span.Wide Level Measurement Range
Standard nominal ranges from 0 to 4 mH₂O through to 0 to 200 mH₂O support tanks, wells, groundwater, open water and water treatment duties.Analogue Output And Communication Options
The standard 4 to 20 mA two wire output includes an RS 232 communication interface. A 0 to 10 V three wire output is also available, with communication interface options.Robust Submersible Stainless Steel Construction
Stainless steel 316L housing and diaphragm components, IP68 ingress protection and a removable POM C protection cap support dependable submerged operation with compatible media.Hazardous Area And Installation Flexibility
An intrinsically safe Ex ia version is available for the 4 to 20 mA two wire output. PVC, PUR and FEP cable options, mounting flanges and terminal clamps support a range of installation requirements.
HLS 320D Applications For Accurate Water Level Monitoring
The HLS 320D is suitable for precision hydrostatic level monitoring where a serviceable detachable probe and configurable measurement settings are required. Its stainless steel construction and IP68 protection make it well suited to submerged water and filtered sewage applications that benefit from accurate, stable continuous level data.
Suitable applications include:
Groundwater level measurement
Wells and boreholes
Open water monitoring
Rain spillway basins
Water storage tanks
Water treatment plants
Water recycling systems
Filtered sewage monitoring
Process containers with compatible liquids
Reservoir level monitoring
Industrial water systems
Pumping and distribution stations
HLS 320D Precision Level Probe Technical Specifications
| Specification | Details |
|---|---|
| Product Model | HLS 320D |
| Brand | SENSVISION |
| Product Type | Detachable precision stainless steel submersible level probe |
| Measuring Principle | Hydrostatic pressure measurement with digital signal processing and 16 bit analogue to digital converter |
| Nominal Level Ranges | 0 to 4, 10, 20, 40, 100 and 200 mH₂O |
| Nominal Pressure Ranges | 0.4, 1, 2, 4, 10 and 20 bar gauge |
| Overpressure Resistance | 2, 5, 10, 20, 40 and 80 bar, according to selected range |
| Burst Pressure | 3, 7.5, 15, 25, 50 and 120 bar, according to selected range |
| Maximum Ambient Housing Pressure | 40 bar |
| Standard Output Signal | 4 to 20 mA, two wire, with RS 232 communication interface |
| Optional Output Signal | 0 to 10 V, three wire, with or without communication interface |
| Standard Supply Voltage | 12 to 36 VDC |
| Intrinsic Safety Supply Voltage | 14 to 28 VDC |
| Three Wire Supply Voltage | 14 to 36 VDC |
| Accuracy | Up to ±0.1% of span according to EN IEC 62828-2 |
| Accuracy At Turn Down Up To 5:1 | No change in accuracy |
| Accuracy At Turn Down Above 5:1 | Up to ±(0.1 + 0.015 × turn down)% of span |
| Low Pressure Accuracy At 0.4 Bar Nominal Pressure | Up to ±(0.1 + 0.02 × turn down)% of span |
| Long Term Stability | Up to ±(0.1 × turn down)% of span per year |
| Response Time | Approximately 200 ms |
| Electronic Damping Adjustment | 0 to 100 seconds |
| Offset Adjustment | 0 to 90% of span |
| Maximum Span Turn Down | 10:1 |
| Thermal Tolerance Band | Up to ±(0.2 × turn down)% of span |
| Temperature Coefficient | ±(0.2 × turn down)% of span per 10 K |
| Compensated Temperature Range | Minus 20°C to 70°C |
| Standard Permissible Medium, Electronics, Ambient And Storage Temperature | Minus 25°C to 80°C, subject to selected cable range |
| Housing Material | Stainless steel 1.4404, equivalent to 316L |
| Diaphragm Material | Stainless steel 1.4435, equivalent to 316L |
| Seal Materials | FKM, EPDM or other materials on request |
| Cable Sheath Options | PVC, PUR, FEP or other materials on request |
| Cable Diameter | 7.4 mm |
| Cable Construction | Shielded cable with integrated air tube for atmospheric pressure reference |
| Static Bending Radius | Ten times cable diameter |
| Dynamic Bending Radius | Twenty times cable diameter |
| Protection Cap Material | POM C |
| Electrical Connection | Detachable Binder Series 723 connector, five pin or seven pin depending on version |
| Housing Diameter | 35 mm |
| Weight | Approximately 250 g without cable |
| Ingress Protection | IP68 |
| Current Consumption | Maximum 25 mA |
| Short Circuit Protection | Permanent |
| Reverse Polarity Protection | No damage, but no function |
| Lightning Protection | Integrated for the two wire version |
| Electromagnetic Compatibility | Emission and immunity in accordance with EN 61326 |
| Intrinsic Safety Option | Ex ia available for 4 to 20 mA two wire output |
| Available Accessories | Mounting flanges, terminal clamps, process displays and programming kits |