Micro balance AND AD-4531B

Micro balance AND AD-4531B

The Micro balance AND AD-4531B is a precision digital weighing controller built for high-accuracy, single-point measurement using strain gauge sensors. Designed for integration into industrial weighing systems, materials testing equipment, or precision monitoring setups, the AD-4531B combines robust electronics, versatile calibration options, and fine signal resolution in a compact and user-friendly format.

Its capability to operate without requiring actual weights during span calibration (via Digital Span Calibration) reduces setup time while maintaining industry-grade accuracy. With a 100 Hz A/D conversion rate, a wide span and zero adjustment range, and support for up to three 350Ω sensors, the AD-4531B is ideal for OEMs, process engineers, and system integrators demanding precision and flexibility.

Key Features

• Single-Point Measurement – Designed to support one measurement point using strain gauge load cells, ideal for isolated or critical measurement stations.

• Digital Span Calibration – Enables non-load calibration, eliminating the need for test weights during setup—ideal for field installations or large-scale systems.

• High Resolution Display – Displays values up to ±999,999 with 9.2 mm high red 7-segment LED digits, along with five status indicators.

• High Accuracy and Linearity –

  • Linearity: ±0.005% F.S. (within ±1 digit)

  • Input Sensitivity (Guaranteed): 0.15 µV/d

• Wide Input Range – Supports span and zero adjustment from -35 to +35 mV (or ±7 mV/V), compatible with various sensor outputs.

• Fast A/D Conversion Rate – Samples at 100 times/second, allowing for responsive measurements in dynamic conditions.

• Temperature Stability –

  • Zero drift: ±0.1 µV/°C (typ.)

  • Span drift: ±8 ppm/°C (typ.), ensuring accurate operation over a wide temperature range.

• Sensor Excitation Power – Supplies 5V excitation for up to:

  • 3 x 350Ω sensors

  • 1 x 120Ω sensor

Applications

• Precision Industrial Weighing – Use in high-accuracy single-station platforms.

• Material Testing Machines – Ideal for force, tension, or compression monitoring using strain gauge-based transducers.

• OEM Equipment – Integrated into custom-built machinery or inspection stations.

• Lab & R&D Systems – High stability and fine resolution for research-grade measurements.

• Automated Monitoring – Can be paired with PLCs for system control and feedback.

Technical Specifications

• Model: AD-4531B

• Measurement Points: 1

• Sensor Type: Strain Gauge

• Calibration Method:

  • Actual Load Calibration

  • Digital Span Calibration (No weights required)

• Maximum Display Value: ±999,999

• Linearity: ±0.005% of Full Scale (within ±1 digit)

• Input Sensitivity:

  • Minimum Display: No limit

  • Guaranteed Input: 0.15 µV/d

• Span Adjustment Range: –35 to +35 mV (±7 mV/V)

• Zero Adjustment Range: –35 to +35 mV (±7 mV/V)

• A/D Conversion Rate: 100 times/second

• Sensor Excitation Voltage: 5V

  • Supports 3 × 350Ω or 1 × 120Ω sensors

• Temperature Coefficients:

  • Zero: ±0.1 µV/°C (typ.)

  • Span: ±8 ppm/°C (typ.)

• Display:

  • Red LED 6-digit, 7-segment

  • Character height: 9.2 mm

  • Status indicators: 5 LEDs

• Panel Area: DIN-style compact mounting

• Weight: 8.3 kg