HLS 330D RS Dual Protocol Digital Transmitter Features
Dual Protocol Digital Communication
The HLS 330D RS supports HART and Modbus RTU protocols simultaneously over an RS 485 digital signal, allowing flexible integration with compatible monitoring and control systems.24 Bit Digital Signal Processing
A 24 bit analogue to digital converter enables active compensation of the sensor signal, supporting accuracy of up to 0.1% of span according to EN IEC 62828-2.Configurable Communication Parameters
Device address, baud rate, parity and measurement units can be set through Modbus holding registers or HART commands to suit the installed communication network.Wide Hydrostatic Level Measurement Range
Nominal level ranges from 4 mH₂O up to 400 mH₂O, corresponding to pressure ranges from 0.4 to 40 bar gauge, support a broad range of tank, well and process installations.Low Thermal Drift Across Operating Range
Thermal tolerance is up to ±0.2% of span in the compensated range, with an average temperature coefficient of ±0.02% of span per 10 K.Stainless Steel Screw In Construction
The pressure port and housing are stainless steel 1.4404, equivalent to 316L, with a stainless steel 1.4435 diaphragm, equivalent to 316L, and FKM seal as standard.Flexible Supply Voltage Options
Standard supply voltage is 3.3 to 36 VDC, with a 3 to 5 VDC option available for installations requiring a lower voltage supply.Reliable Electrical And Mechanical Protection
Permanent short circuit protection, reverse polarity protection without damage, and mechanical resistance to vibration and shock support dependable long term operation.
HLS 330D RS Applications For Digitally Networked Level Monitoring
The HLS 330D RS is suited to applications that benefit from a digital RS 485 signal and dual protocol compatibility for hydrostatic level measurement. Its configurable communication settings and stainless steel construction support integration into networked water, environmental and process monitoring systems.
Suitable applications include:
Environmental engineering systems
Water treatment and monitoring installations
Sewage treatment processes
Water recycling facilities
Chemical process tanks
Petrochemical liquid storage systems
Networked process monitoring systems using HART or Modbus RTU
Industrial level measurement requiring digital bus communication
Remote monitoring installations with configurable device addressing
Multi sensor networks on a shared RS 485 bus
HLS 330D RS Digital Level Transmitter Technical Specifications
| Specification | Details |
|---|---|
| Product Model | HLS 330D RS |
| Brand | SENSVISION |
| Product Type | Digital RS 485 stainless steel screw in level transmitter |
| Measuring Principle | Hydrostatic pressure measurement with 24 bit analogue to digital converter |
| Mechanical Connection | G 3/4 inch DIN 3852 |
| Nominal Level Ranges | 4, 10, 20, 40, 100, 200 and 400 mH₂O |
| Nominal Pressure Ranges | 0.4, 1, 2, 4, 10, 20 and 40 bar gauge |
| Overpressure Resistance | 2, 5, 10, 20, 40, 80 and 105 bar, according to selected range |
| Burst Pressure | 3, 7.5, 15, 25, 50, 120 and 210 bar, according to selected range |
| Output Signal | Digital RS 485, HART protocol or Modbus RTU protocol |
| Standard Supply Voltage | 3.3 to 36 VDC |
| Optional Supply Voltage | 3 to 5 VDC |
| Accuracy | Up to 0.1% of span according to EN IEC 62828-2 |
| Temperature Measurement Accuracy | ±2°C |
| 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 in compensated range |
| Average Temperature Coefficient | ±0.02% of span per 10 K in compensated range |
| Permissible Medium Temperature | Minus 25°C to 125°C |
| Permissible Electronics And Ambient Temperature | Minus 25°C to 85°C |
| Storage Temperature | Minus 40°C to 100°C |
| Pressure Port And Housing Material | Stainless steel 1.4404, equivalent to 316L |
| Diaphragm Material | Stainless steel 1.4435, equivalent to 316L |
| Standard Seal Material | FKM |
| Optional Seal Material | EPDM, or welded version where applicable |
| Wetted Parts | Pressure port, seal and diaphragm |
| Current Consumption At 3.3 To 36 V Supply | 3.2 mA |
| Current Consumption At 3 To 5 V Supply | 6 mA |
| Available HART Baud Rates | 1200, 2400, 4800, 9600, 19200 and 38400 Bd |
| Available Modbus RTU Baud Rates | 1200, 2400, 4800, 9600, 19200 and 38400 Bd |
| Default Communication Settings | 8 data bits, 1 stop bit, 9600 Bd, even parity, address 1 |
| Electrical Connection | Binder Series 723, seven pin |
| Short Circuit Protection | Permanent |
| Reverse Polarity Protection | No damage, but no function |
| Electromagnetic Compatibility | Emission and immunity according to EN 61326 |
| Vibration Resistance | 10 g RMS from 20 to 2000 Hz |
| Shock Resistance | 100 g for 11 ms |
| Weight | Approximately 200 g |
| Installation Position | Any position, with possible zero point deviation on ranges up to 1 bar if installed differently from calibration position |
| Operational Life | 100 million load cycles |
| CE Conformity | EMC Directive 2014/30/EU, Pressure Equipment Directive 2014/68/EU where applicable and ATEX Directive 2014/34/EU |