HLS 310D RS Digital Level Probe Features
Precision Digital Hydrostatic Measurement
The HLS 310D RS delivers accuracy of up to ±0.1% of span according to EN IEC 62828-2, with active compensation of sensor specific linearity and thermal effects.RS 485 Modbus RTU Or HART Communication
The digital RS 485 interface supports Modbus RTU or HART protocol configurations for connection to compatible PLC, telemetry, monitoring and control systems.Integrated Pressure And Temperature Data
Modbus input registers provide floating point values for actual pressure and temperature, alongside recorded maximum and minimum pressure and temperature values.Configurable Digital Communication Settings
Device address, baud rate and parity can be configured through Modbus holding registers. The device must be power cycled after changing these communication parameters.Selectable Measurement Units And Damping
The pressure and temperature units, pressure damping and decimal point settings are configurable through the Modbus register map. Pressure units include mH₂O, bar, mbar, Pa, kPa, psi and MPa.Wide Level Measurement Range
Nominal level ranges are available from 0 to 0.6 mH₂O through to 0 to 250 mH₂O for shallow tanks, wells, groundwater and deeper level measurement duties.Stainless Steel Submersible Construction
Stainless steel 316L housing and diaphragm materials, a POM protection cap and IP68 protection provide a robust construction for submerged use with compatible media.Flexible Cable And Mounting Choices
PVC, PUR and FEP cable options are available with an integrated atmospheric pressure reference tube. Optional corrugated pipe protection, mounting flanges and terminal clamps support a broad range of installation conditions.
HLS 310D RS Applications For Digital Water Level Control
The HLS 310D RS is designed for connected hydrostatic level measurement where high accuracy and digital RS 485 communication are required. It is particularly suited to water infrastructure and compatible liquid installations that benefit from remote access to pressure, temperature, diagnostic and configuration data.
Suitable applications include:
Groundwater level monitoring
Wells and boreholes
Water supply systems
Water treatment plants
Sewage treatment facilities using filtered wastewater
Water recycling systems
Open tanks and reservoirs
Rainwater storage and drainage basins
Environmental water monitoring
Remote telemetry installations
PLC based level control systems
Industrial water storage tanks
HLS 310D RS RS 485 Level Probe Technical Specifications
| Specification | Details |
|---|---|
| Product Model | HLS 310D RS |
| Brand | SENSVISION |
| Product Type | Precision stainless steel RS 485 submersible level probe |
| Measuring Principle | Hydrostatic pressure measurement with stainless steel sensor, microprocessor and 24 bit analogue to digital converter |
| Communication Interface | RS 485 |
| Communication Protocol Options | Modbus RTU or HART |
| Nominal Level Ranges | 0 to 0.6, 1, 1.6, 2.5, 4, 6, 10, 16, 25, 40, 60, 100, 160 and 250 mH₂O |
| Nominal Pressure Ranges | 0.06 to 25 bar gauge |
| Permissible Overpressure | 0.2 to 60 bar, depending on selected nominal pressure |
| Supply Voltage | 3.3 to 36 VDC standard, with 3 to 5 VDC option |
| Current Consumption At 3.3 To 36 VDC | 3.2 mA |
| Current Consumption At 3 To 5 VDC | 6 mA |
| Accuracy | Up to ±0.1% of span according to EN IEC 62828-2 |
| Long Term Stability | Up to ±0.1% of span per year |
| Measurement Speed | 80 measurements per second |
| Thermal Tolerance Band | Up to ±0.2% of span |
| Temperature Coefficient | ±0.02% of span per 10 K |
| Compensated Temperature Range | Minus 20°C to 80°C |
| 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 Material | FKM standard, with other materials available on request |
| Protection Cap Material | POM |
| Cable Sheath Options | PVC, PUR, FEP or other materials on request |
| Cable Diameter | 7.4 mm |
| Cable Construction | Shielded cable with integrated ventilation tube for atmospheric pressure reference |
| Cable Capacitance | 160 pF per m |
| Cable Inductance | 1 µH per m |
| Housing Diameter | 27 mm |
| Weight | Approximately 200 g without cable |
| Ingress Protection | IP68 |
| Insulation Resistance | Greater than 100 MOhm |
| Short Circuit Protection | Permanent |
| Reverse Polarity Protection | No damage, but no function |
| Electromagnetic Compatibility | Emission and immunity in accordance with EN 61326 |
| Baud Rate Options | 1200, 2400, 4800, 9600, 19200 or 38400 Bd |
| Default Communication Settings | 8 data bits, 1 stop bit, 9600 Bd, even parity, address 1 unless otherwise specified |
| Modbus Device Address Range | 1 to 247 |
| Modbus Functions | Function 4 read input registers, function 3 read holding registers and function 6 write single register |
| Mechanical Vibration Resistance | 10 g RMS from 20 to 2000 Hz |
| Mechanical Shock Resistance | 100 g for 11 ms |