HLS 320 Detachable Stainless Steel Level Probe Features
Detachable Sensor And Cable Construction
The transmitter head is connected to the cable assembly through a five pin connector, allowing the sensor section to be replaced separately for easier servicing and stock management.Continuous Hydrostatic Liquid Level Measurement
The probe measures the pressure generated by the liquid column and converts it into a continuous analogue signal for level monitoring and process control.Broad Level Range Availability
Nominal ranges extend from 0 to 1 mH₂O up to 0 to 250 mH₂O, supporting applications from shallow containers to deep wells and open water monitoring.Accurate And Stable Measurement Performance
Standard accuracy is up to ±0.35% of span for ranges from 0.4 bar, with an optional accuracy of up to ±0.25% of span. Long term stability is up to ±0.1% of span per year.Stainless Steel Wetted Components
The housing is manufactured from stainless steel 1.4404 and the diaphragm from stainless steel 1.4435, both equivalent to 316L, for use with compatible water and thin liquid media.Signal Options For Control System Integration
A 4 to 20 mA two wire output is standard. Additional output configurations can be selected according to the ordering options and application requirements.Hazardous Area And Functional Safety Versions
An intrinsically safe Ex ia version is available for gas and dust hazardous areas. A SIL 2 version is also available for applications designed according to IEC 61508 and IEC 61511.Cable, Seal And Mounting Flexibility
PVC, PUR and FEP cable options are available alongside FKM and EPDM seals. Compatible mounting flanges, cable glands, terminal clamps and process displays support different installation arrangements.
HLS 320 Applications For Water And Filtered Sewage Level Measurement
The HLS 320 is suited to continuous level measurement where a durable submerged probe and serviceable detachable construction are required. Its stainless steel wetted parts, broad range availability and optional safety configurations make it appropriate for municipal water infrastructure, environmental monitoring and compatible industrial liquid storage.
Suitable applications include:
Groundwater level measurement
Wells and boreholes
Open water monitoring
Rain spillway basins
Water storage containers
Water treatment plants
Water recycling systems
Filtered sewage monitoring
Pumping stations
Reservoir level monitoring
Industrial water tanks
Compatible thin liquid storage vessels
HLS 320 Detachable Submersible Probe Technical Specifications
| Specification | Details |
|---|---|
| Product Model | HLS 320 |
| Brand | SENSVISION |
| Product Type | Detachable stainless steel submersible level probe |
| Measuring Function | Continuous hydrostatic liquid level measurement |
| Nominal Level Ranges | 0 to 1, 1.6, 2.5, 4, 6, 10, 16, 25, 40, 60, 100, 160 and 250 mH₂O |
| Nominal Pressure Ranges | 0.1, 0.16, 0.25, 0.4, 0.6, 1, 1.6, 2.5, 4, 6, 10, 16 and 25 bar gauge |
| Overpressure Resistance | 0.5 to 80 bar, depending on the selected nominal range |
| Burst Pressure | 1.5 to 120 bar, depending on the selected nominal range |
| Maximum Ambient Housing Pressure | 40 bar |
| Standard Output Signal | 4 to 20 mA, two wire |
| Standard Supply Voltage | 8 to 32 VDC |
| Intrinsic Safety Supply Voltage | 10 to 28 VDC |
| SIL Version Supply Voltage | 14 to 28 VDC |
| Standard Accuracy Below 0.4 Bar | Up to ±0.5% of span |
| Standard Accuracy From 0.4 Bar | Up to ±0.35% of span |
| Optional Accuracy From 0.4 Bar | Up to ±0.25% of span |
| Accuracy Standard | EN IEC 62828-2 using limit point adjustment |
| Long Term Stability | Up to ±0.1% of span per year |
| Response Time | 10 ms or less |
| Supply Influence | 0.05% of span per 10 V |
| Load Influence | 0.05% of span per kOhm |
| Thermal Tolerance Below 0.4 Bar | Up to ±1% of span |
| Thermal Tolerance From 0.4 Bar | Up to ±0.75% of span |
| Compensated Temperature Range | 0°C to 70°C |
| Permissible Medium, Electronics, Ambient And Storage Temperature | Minus 20°C to 80°C, subject to the 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 materials on request |
| Protection Cap Material | POM C |
| Cable Sheath Options | PVC, PUR, FEP or other materials on request |
| Cable Diameter | 7.4 mm |
| Cable Construction | Cable with integrated air tube for atmospheric pressure reference |
| Detachable Electrical Connection | Binder Series 723 five pin connector |
| Supply Positive Connection | Pin 3 and white wire |
| Supply Negative Connection | Pin 1 and brown wire |
| Shield Connection | Pin 5 and green and yellow wire |
| Probe Diameter | 35 mm |
| Standard Length | Approximately 177.5 mm |
| Length With Protection Cap Removed | Approximately 164 mm |
| Weight | Approximately 250 g without cable |
| Ingress Protection | IP68 |
| Maximum Signal Output Current | 25 mA |
| Short Circuit Protection | Permanent |
| Reverse Polarity Protection | No damage, but no function |
| Lightning Protection | Integrated |
| Electromagnetic Compatibility | Emission and immunity in accordance with EN 61326 |
| Explosion Protection Option | Ex ia for gas and dust, including Zone 0 and Zone 20 classifications |
| Functional Safety Option | SIL 2 application according to IEC 61508 and IEC 61511 |
| CE Conformity | EMC Directive 2014/30/EU and ATEX Directive 2014/34/EU |