HLC 350 Low Pressure Process And Level Transmitter

The SENSVISION HLC 350 is specifically engineered for accurate measurement of low pressure ranges in industrial process and level applications. Utilizing a capacitive ceramic sensor element, the transmitter delivers excellent sensitivity and precision across pressure ranges starting as low as 40 mbar up to 20 bar. Its flush mounted diaphragm design ensures reliable operation even in viscous, pasty, or contaminated media where traditional pressure ports may be prone to blockage.

The transmitter is built for flexibility and durability, offering material options such as stainless steel, PVDF, and PP HT for use in aggressive media environments. This makes it highly suitable for chemical processing, environmental systems, and fluid handling applications. With optional intrinsically safe configurations and enhanced ceramic diaphragm options, the SENSVISION HLC 350 provides a dependable solution for challenging measurement conditions while maintaining long term stability and accuracy.

SKU HLC 350 Category

Key Performance Features Of The SENSVISION HLC 350 Low Pressure Transmitter

  1. Capacitive Ceramic Sensor For High Precision Low Pressure Measurement
    Enables accurate detection of small pressure changes with excellent sensitivity and repeatability.

  2. Flush Mounted Diaphragm For Viscous And Contaminated Media
    Prevents clogging and ensures reliable measurement in challenging fluids such as sludge or oils.

  3. Wide Pressure Range Coverage For Versatile Applications
    Measures pressures from 40 mbar up to 20 bar, suitable for both low pressure and moderate pressure systems.

  4. Material Options For Aggressive Media Compatibility
    Available with PVDF or PP HT pressure ports and optional high purity ceramic diaphragm for corrosive environments.

  5. High Accuracy Options For Demanding Measurement Requirements
    Standard accuracy of ±0.35% span with optional ±0.25% span for precision critical applications.

  6. Intrinsic Safety Option For Hazardous Area Use
    Optional Ex ia versions allow safe operation in gas and dust hazardous environments.

Applications For The HLC 350 Low Pressure Process And Level Sensor

The SENSVISION HLC 350 is ideal for applications requiring accurate low pressure measurement in difficult media conditions, including viscous, contaminated, or aggressive fluids.

  • Chemical processing systems handling aggressive liquids
  • Environmental engineering including water, sewage, and recycling systems
  • Fuel and oil storage and monitoring systems
  • Industrial tanks with viscous or pasty media
  • Process control in plant and machine engineering
  • Low pressure level monitoring in containers and vessels

Technical Specifications Of The HLC 350 Screw In Low Pressure Transmitter

SpecificationDetail
Product TypeScrew in pressure and level transmitter
Sensor TechnologyCapacitive ceramic sensor
Pressure Range40 mbar up to 20 bar
Level Measurement Equivalent0.4 mH₂O up to 200 mH₂O
Accuracy≤ ±0.35% span standard, ≤ ±0.25% span optional
Output Signal Standard4 to 20 mA, 2-wire
Optional Output Signal0 to 10 V, 3-wire
Supply Voltage 2 Wire9 to 32 VDC
Supply Voltage Ex Version14 to 28 VDC
Supply Voltage 3 Wire12.5 to 32 VDC
Permissible Load 2 WireRL = [(Vs minus Vs min) / 0.02 A] ohms
Permissible Load 3 WireRL = 10 k ohms
Influence EffectsSupply: 0.05% span per 10 V, Load: 0.05% span per k ohm
Long Term Stability≤ ±0.1% span per year
Response TimeMean ≤ 200 msec, max ≤ 380 msec
Measuring RateApprox. 5 measurements per second
Thermal Error≤ ±0.1% span per 10 K
Compensated Temperature Rangeminus 20 °C to 80 °C
Permissible Medium Temperatureminus 40 °C to 125 °C
Ambient Temperatureminus 40 °C to 85 °C
Storage Temperatureminus 40 °C to 100 °C
Short Circuit ProtectionPermanent
Reverse Polarity ProtectionNo damage, but no function
EMCAccording to EN 61326
Vibration Resistance10 g RMS (20 to 2000 Hz)
Shock Resistance100 g for 1 msec
Housing Material OptionsStainless steel 1.4404, PVDF, PP HT
Diaphragm MaterialCeramic Al₂O₃ 96%, optional 99.9%
Seal OptionsFKM, FFKM, EPDM
Process ConnectionG 1 1/2 flush (DIN 3852)
WeightApprox. 200 g
Operational LifeGreater than 100 million load cycles
Protection ClassDepending on configuration up to IP 68
Explosion ProtectionEx ia option available
ConformityCE, EMC Directive 2014/30/EU, ATEX Directive 2014/34/EU

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