INDUSTRY COMPONENT

Pressure Sensors

Pressure sensors measure fluid pressure in automated chemical filtration systems to ensure process control and safety.

Component Specifications

Definition
Pressure sensors are precision instruments that convert applied pressure into an electrical signal, typically using piezoresistive, capacitive, or strain gauge technologies. In automated chemical filtration and separation systems, they monitor pressure differentials across filters, detect blockages, ensure proper pump operation, and maintain system integrity by providing real-time data to control systems.
Working Principle
Pressure sensors operate by detecting mechanical deformation caused by fluid pressure. Common principles include: 1) Piezoresistive: Pressure causes strain in a diaphragm, changing resistance in embedded strain gauges. 2) Capacitive: Pressure changes the distance between capacitor plates, altering capacitance. 3) Strain gauge: Pressure-induced strain changes electrical resistance in bonded or thin-film strain elements. The resulting electrical signal is amplified and converted to standardized outputs (4-20mA, 0-10V, digital protocols).
Materials
Materials must be chemically compatible with process fluids. Common specifications: Sensing diaphragm: 316L stainless steel, Hastelloy C-276, Monel, Tantalum. Housing: 316 stainless steel, aluminum alloy with chemical-resistant coatings. Seals: FKM (Viton), EPDM, PTFE. Electronics: Epoxy-encapsulated PCBs with conformal coating for moisture/chemical protection.
Technical Parameters
  • Accuracy ±0.25% to ±0.5% FS
  • IP Rating IP67/IP69K
  • Output Signal 4-20mA, 0-10V, HART, Profibus PA, Foundation Fieldbus
  • Response Time <10 ms
  • Pressure Range 0-10 bar to 0-400 bar
  • Media Temperature -20°C to +125°C
  • Process Connection G1/2, 1/2" NPT, Tri-Clamp
  • Explosion Protection ATEX, IECEx Zone 1/21
Standards
ISO 5167, IEC 60770, DIN EN 60529, ASME B40.100

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Pressure Sensors.

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Chemical corrosion damaging sensing elements
  • Overpressure causing diaphragm rupture
  • Electrical interference in signal transmission
  • Seal degradation leading to leaks
  • Incorrect installation causing measurement errors
FMEA Triads
Trigger: Chemical attack on diaphragm material
Failure: Sensor drift or complete failure, leading to inaccurate pressure readings
Mitigation: Select chemically compatible materials; implement regular inspection and preventive replacement schedules
Trigger: Water ingress due to damaged housing or seals
Failure: Short circuit in electronics, signal loss
Mitigation: Use IP67/IP69K rated sensors; inspect seals during maintenance; ensure proper installation torque
Trigger: Vibration from pumps or machinery
Failure: Mechanical fatigue, loose connections, signal noise
Mitigation: Install with vibration-dampening mounts; use rigid piping supports; select sensors with robust mechanical design

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Accuracy tolerance ±0.25% to ±0.5% of full scale; hysteresis <0.1% FS; repeatability <0.05% FS
Test Method
Performance tested per IEC 60770: Deadweight tester calibration; temperature cycling (-20°C to +125°C); long-term stability test (1000 hours); chemical resistance immersion test; IP rating water/dust ingress test per DIN EN 60529

Buyer Feedback

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"The technical documentation for this Pressure Sensors is very thorough, especially regarding technical reliability."

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Frequently Asked Questions

How do pressure sensors prevent filter damage in chemical systems?

Pressure sensors monitor differential pressure across filters. When pressure exceeds setpoints (indicating clogging), they trigger alarms or automatic backwash cycles, preventing rupture, reduced efficiency, or chemical bypass.

What materials are best for corrosive chemical applications?

For highly corrosive media (acids, chlorides), use sensors with Hastelloy C-276 or Tantalum diaphragms and PTFE seals. 316L stainless steel suffices for moderate chemicals. Always verify chemical compatibility charts.

How are pressure sensors calibrated in automated systems?

Calibration involves applying known pressures (deadweight tester or precision calibrator) and adjusting zero and span via HART communicator or control system. ISO 9001 requires periodic calibration (typically annually) with traceable standards.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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