HLS 330 Flush Pressure Port Transmitter Features
G 3/4 Inch Flush Pressure Port
The flush diaphragm process connection supports continuous level measurement where a smooth sensing surface is beneficial for compatible liquid media and process installations.Wide Hydrostatic Level Range Selection
Available ranges from 0 to 1 mH₂O through to 0 to 400 mH₂O support applications ranging from shallow vessels to high liquid columns and pressurised process systems.Accurate Pressure Based Level Measurement
Standard accuracy is up to ±0.5% of span below 0.4 bar and up to ±0.35% of span from 0.4 bar. An up to ±0.25% of span option is available from 0.4 bar.Low Thermal Effect And Long Term Stability
Pressure thermal tolerance is up to ±1% of span below 0.4 bar and up to ±0.75% of span from 0.4 bar. Long term stability is up to ±0.1% of span per year.Analogue Output Flexibility
A 4 to 20 mA two wire output is standard. Optional three wire outputs include 0 to 20 mA and 0 to 10 V for integration with compatible monitoring and control equipment.Stainless Steel Wetted Construction
The pressure port and housing use stainless steel 1.4404, equivalent to 316L, while the diaphragm is stainless steel 1.4435, equivalent to 316L. FKM is standard, with EPDM and NBR seal options available.Intrinsic Safety And SIL 2 Options
An Ex ia version is available for gas and dust hazardous areas on the 4 to 20 mA two wire version. SIL 2 configurations are available for applications designed according to IEC 61508 and IEC 61511.Multiple Electrical Connection Options
ISO 4400, Binder Series 723, M12, field housing, cable gland and cable outlet configurations allow the HLS 330 to be specified for different installation requirements.
HLS 330 Applications For Flush Diaphragm Liquid Level Measurement
The HLS 330 is suited to process applications that require continuous hydrostatic level measurement using a compact screw in transmitter with a flush diaphragm connection. Its broad measuring range, stainless steel construction and configurable output, safety and connection options support installation across industrial, energy and environmental systems.
Suitable applications include:
Process tanks and vessels
Water and wastewater treatment systems
Recycling facilities
Pumping stations
Industrial liquid storage tanks
Machine engineering systems
Plant engineering installations
Energy industry process equipment
Environmental monitoring systems
Compatible liquid process lines
Level control in closed vessels
Systems requiring intrinsic safety or SIL 2 configurations
HLS 330 Industrial Level Transmitter Technical Specifications
| Specification | Details |
|---|---|
| Product Model | HLS 330 |
| Brand | SENSVISION |
| Product Type | Flush diaphragm stainless steel screw in level transmitter |
| Measuring Principle | Hydrostatic pressure measurement |
| Process Connection | G 3/4 inch flush, DIN 3852 |
| Nominal Level Ranges | 0 to 1, 1.6, 2.5, 4, 6, 10, 16, 25, 40, 60, 100, 160, 250 and 400 mH₂O |
| Nominal Pressure Ranges | 0.1, 0.16, 0.25, 0.4, 0.6, 1, 1.6, 2.5, 4, 6, 10, 16, 25 and 40 bar gauge |
| Overpressure Resistance | 0.5 to 105 bar, depending on selected nominal pressure |
| Burst Pressure | At least 1.5 to 210 bar, depending on selected nominal pressure |
| Vacuum Resistance | Unlimited for nominal pressure at least 1 bar, lower ranges available on request |
| Standard Output Signal | 4 to 20 mA, two wire |
| Optional Output Signals | 0 to 20 mA, three wire, or 0 to 10 V, three wire |
| Standard Supply Voltage | 8 to 32 VDC for 4 to 20 mA two wire |
| Intrinsic Safety Supply Voltage | 10 to 28 VDC for 4 to 20 mA two wire |
| Three Wire Supply Voltage | 14 to 30 VDC |
| SIL 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 |
| Optional Precision Accuracy | 0.1% of span according to IEC 60770 |
| Accuracy Standard | EN IEC 62828-2 using limit point adjustment |
| Long Term Stability | Up to ±0.1% of span per year |
| Response Time For Two Wire Output | 10 ms or less |
| Response Time For Three Wire Output | 3 ms or less |
| Response Time With Optional 0.1% Accuracy | 200 ms |
| Supply Influence | 0.05% of span per 10 V |
| Load Influence | 0.05% of span per kOhm |
| Maximum Load For Two Wire Output | Supply voltage minus minimum supply voltage divided by 0.02 A |
| Maximum Load For Three Wire Current Output | 500 Ohm |
| Minimum Load For Three Wire Voltage Output | 10 kOhm |
| Pressure Thermal Tolerance Below 0.4 Bar | Up to ±1% of span within 0°C to 70°C |
| Pressure Thermal Tolerance From 0.4 Bar | Up to ±0.75% of span within minus 20°C to 85°C |
| Permissible Medium Temperature | Minus 40°C to 125°C |
| Permissible Electronics And Ambient Temperature | Minus 40°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 Materials | EPDM or NBR |
| Wetted Parts | Pressure port, seal and diaphragm |
| Electrical Protection | Permanent short circuit protection and reverse polarity protection with no damage |
| Electromagnetic Compatibility | Emission and immunity according to EN 61326 |
| Vibration Resistance | 10 g RMS from 25 to 2000 Hz according to DIN EN 60068-2-6 |
| Shock Resistance | 500 g for 1 ms according to DIN EN 60068-2-27 |
| Ingress Protection | IP65 to IP68 depending on selected electrical connection |
| 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 | More than 100 million cycles |
| Intrinsic Safety Option | Ex ia for gases and dusts, 4 to 20 mA two wire only |
| Functional Safety Option | SIL 2 according to IEC 61508 and IEC 61511 |
| CE Conformity | EMC Directive 2014/30/EU and ATEX Directive 2014/34/EU |