Kyowa WGA-200A

Kyowa WGA-200A

Product Overview
The Kyowa WGA-200A is a strain gage amplifier and indicator from Kyowa Electronic Instruments. It is used to amplify, display and process signals from strain gage-based sensors such as load cells, pressure transducers, torque sensors and displacement transducers. The WGA-200A belongs to Kyowa’s WGA instrumentation amplifier family, which is widely used in industrial measurement, test and control applications.

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Description

Kyowa WGA-200A

Technical Specifications

  • Brand: Kyowa Electronic Instruments
  • Model: WGA-200A
  • Product type: Strain gage amplifier / indicator
  • Applicable sensors: Strain gage-based sensors
  • Measurement channels: Single-channel typical for WGA series
  • Input type: Balanced differential input for strain gage bridge
  • Bridge excitation: DC bridge supply voltage depending on variant
  • Display: Digital LED or numeric display depending on revision
  • Output signals: Analog voltage and/or current output depending on configuration
  • Comparison function: Upper and lower limit comparison depending on variant
  • Power supply: AC or DC power depending on model variant
  • Mounting: Panel mounting or DIN-rail mounting depending on variant
  • Environmental design: Industrial-grade measurement equipment
  • Standards compliance: EMC and safety standards applicable to Kyowa WGA series

Functional Features

  • Amplifies low-level strain gage sensor signals.
  • Displays measured values such as load, pressure, torque or displacement.
  • Supports bridge excitation for strain gage sensors.
  • Provides analog output for connection to recorders, PLCs or data acquisition systems.
  • Supports zero adjustment and sensitivity adjustment.
  • Provides upper and lower limit comparison functions depending on configuration.
  • Supports peak hold, zero tracking and filtering functions depending on variant.
  • Stores configuration settings in non-volatile memory.
  • Designed for stable industrial measurement with low interference.

Application Scenarios

  • Load cell measurement systems.
  • Pressure and force testing.
  • Torque measurement for rotating equipment.
  • Displacement and deformation monitoring.
  • Industrial test benches and calibration systems.
  • Production line quality control.
  • Structural testing and material testing.
  • Integration with PLCs, recorders and data loggers.

Performance Parameters

  • Designed for strain gage-based sensor measurement.
  • High-stability bridge excitation and signal amplification.
  • Digital display for direct reading of measured values.
  • Analog output for process control integration.
  • Low-drift measurement suitable for industrial environments.
  • Exact measurement range, accuracy, sampling rate, bridge resistance range, excitation voltage, output range, power consumption, dimensions and environmental ratings must be confirmed from the official Kyowa WGA-200A datasheet and nameplate.

Material Composition

  • Industrial printed circuit board.
  • Precision instrumentation amplifier circuits.
  • Bridge excitation power supply circuits.
  • Analog-to-digital conversion circuits.
  • Digital display driver circuits.
  • Analog output circuits.
  • Comparison and control output circuits depending on variant.
  • Power supply and protection circuits.
  • Connector terminals and interface circuits.
  • Protective housing and front panel.

Structural Features

  • Compact industrial amplifier housing.
  • Front display for measured values and status.
  • Front keys or switches for configuration.
  • Rear or side terminals for sensor and power connection.
  • Analog output terminals for voltage or current signals.
  • Comparison output terminals depending on variant.
  • Status LEDs for power, comparison and operation.
  • Nameplate with model, power rating and serial number.

Working Principle
The WGA-200A supplies excitation voltage to a strain gage bridge sensor. When the sensor is loaded, the bridge output changes proportionally to the applied physical quantity. The amplifier converts this small differential signal into a stable measurement value, displays it on the front panel and outputs it as an analog signal. If comparison functions are enabled, the device compares the measured value with preset limits and activates relay or logic outputs accordingly.

Installation Requirements

  • Install in a dry, ventilated and vibration-controlled environment.
  • Use the correct power supply voltage specified on the nameplate.
  • Connect strain gage sensors with shielded cables.
  • Keep signal cables away from high-power cables and inverters.
  • Ground the shield according to Kyowa wiring instructions.
  • Verify sensor bridge resistance and wiring method.
  • Perform zero and sensitivity adjustment after installation.
  • Confirm that the installation environment meets the specified temperature and humidity limits.

Precautions for Use

  • Do not exceed the rated sensor excitation voltage.
  • Verify sensor compatibility before connection.
  • Avoid mechanical shock and strong electromagnetic interference.
  • Do not short-circuit or overload analog output terminals.
  • Keep connector terminals clean and properly tightened.
  • Back up or record configuration settings before replacement.
  • Perform periodic calibration for critical measurements.
  • Refer to the official Kyowa WGA-200A manual for exact wiring, configuration and maintenance procedures.

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