Pressure Sensor, Load Cell, & Strain Gauge Applications

Pressure Sensors, Load Cells, Force Sensors

A wheatstone bridge combine with a mechanical structure with the bridge and provide and change in output based a pressure, load, force or strain. A small number of discrete signal path configurations support most of applications.

Pressure/Load/Force Instrument Amp Configuration

Example Solutions

The article "Maximizing Signal-Path Performance", Signal Path Designer #102, covers technical details on this circuit topology.

Pressure/Load/Force Differential Amp Configuration

Example Solutions

Pressure Sensor (5V) with Adjustable Reference

Example Solutions

The article Optimizing Portable Applications with DACs", Analog Edge #4-9, page 3, covers technical details on this circuit topology.

Gain and Offset Calibration

Example Solutions

Load Cell for Weighing Systems

Example Solutions

Variable Voltage Drive

Example Solutions

Variable Current Source

Example Solutions

Pressure Sensors, Load Cells, Force Sensor Applications

• Pressure calibrators
• HVAC measurement (pilot tube for air flow measurement)
• Gas monitors
• Industrial / process control
• Discrete volumetric valves
• Pneumatic control
• Level sensing (pressure head)
• Flow measurement (differential pressure across orifice, restriction)
• Vacuum systems
• Gas, chemical analysis systems

• Laboratory, bench, production scales
• Pharmaceutical
• Food and beverage
• Tank weighing, tank pressure, leak detection
• Truck, vehicle scales
• Static and dynamic check weighers
• Livestock scales
• Aviation baggage, parcel shippers
• Refrigeration/compressors
• Level measurement/control