HLS 310D Precision Level Probe Features
High Accuracy Hydrostatic Level Monitoring
The HLS 310D provides accuracy of up to ±0.1% of span, helping to deliver precise and repeatable level measurement for critical water management applications.Configurable Measurement Parameters
With the required interface and software, electronic damping can be set from 0 to 100 seconds, offset can be adjusted from 0 to 90% of span and span turn down is available up to 10:1.Compact Stainless Steel Submersible Design
The 27 mm diameter probe combines a stainless steel housing and diaphragm with IP68 protection for dependable placement in wells, tanks, basins and open water installations.Wide Water Level Range Selection
Standard nominal ranges are available from 0 to 4 mH₂O through to 0 to 200 mH₂O, with software adjustment available within the permitted turn down capability.Flexible Analogue Output Choices
A 4 to 20 mA two wire output is standard, while a 0 to 10 V three wire version is available for systems that require a voltage signal.Low Thermal Effect And Long Term Stability
Thermal tolerance is up to ±(0.2 × turn down)% of span within the compensated range, and long term stability is up to ±(0.1 × turn down)% of span per year.Suitability For Hazardous And Drinking Water Duties
An intrinsically safe Ex ia version is available for specified hazardous area duties. Drinking water approval options are available when the required compatible seal and cable materials are selected.Practical Cabling And Installation Options
PVC, PUR, FEP and TPE U cable options are available with an integrated atmospheric pressure reference tube. Optional corrugated hose cable protection, mounting flanges and terminal clamps support installation requirements.
HLS 310D Applications For Precision Water Level Measurement
The HLS 310D is suitable for high accuracy continuous hydrostatic level measurement in water and compatible liquid applications. Its precise stainless steel sensor, configurable output and parameter settings, and submerged IP68 construction make it a dependable choice for water infrastructure, process storage and fuel related level monitoring.
Suitable applications include:
Groundwater level measurement
Wells and boreholes
Open water monitoring
Rain spillway basins
Water storage tanks
Water treatment plants
Water recycling facilities
Filtered wastewater monitoring
Drinking water installations with a compatible approved configuration
Process containers with compatible liquids
Fuel storage tanks
Tank farm level monitoring
HLS 310D Precision Submersible Level Probe Technical Specifications
| Specification | Details |
|---|---|
| Product Model | HLS 310D |
| Brand | SENSVISION |
| Product Type | Precision stainless steel submersible level probe |
| Measuring Principle | Hydrostatic pressure measurement with stainless steel sensor |
| 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, depending on selected range |
| Burst Pressure | 3, 7.5, 15, 25, 50 and 120 bar, depending on 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 |
| 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 After Turn Down Up To 5:1 | No change of accuracy |
| Accuracy After Turn Down Above 5:1 | Up to ±(0.1 + 0.015 × turn down)% of span |
| Long Term Stability | Up to ±(0.1 × turn down)% of span per year |
| Response Time, Current Output | 5 ms |
| Response Time, Voltage Output | 25 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 |
| Compensated Temperature Range | Minus 20°C to 70°C |
| Standard Permissible Medium, Electronics, Ambient And Storage Temperature | Minus 20°C to 80°C, subject to selected cable temperature 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 material on request |
| Protection Cap Material | POM |
| Cable Sheath Options | PVC, PUR, FEP or TPE U |
| Cable Diameter | 7.4 mm |
| Housing Diameter | 27 mm |
| Ingress Protection | IP68 |
| Maximum Current Consumption | 25 mA |
| Weight | Approximately 200 g without cable |
| Electrical Protection | Permanent short circuit protection and reverse polarity protection |
| Insulation Resistance | Greater than 100 MOhm |
| Electromagnetic Compatibility | In accordance with EN 61326 |
| Explosion Protection Option | Intrinsically safe Ex ia version for the 4 to 20 mA two wire output |
| Drinking Water Approval Option | Available according to DVGW W 270 and UBA KTW when a compatible configuration is selected |
| Accessories | Mounting flanges, terminal clamps, process displays and programming kits |