Description
BRT RW-ST01A Load cell amplifier amplifies and converts the output signal from full-bridge type load cell or weight sensor into standard dc current or voltage signal. Inside the signal amplifier, there are operation amplification circuit, long-distance compensation circuit, current voltage regulation circuit, linear conversion circuits to process the signal input. Its dc current voltage output can be directly connected to PLC, meters, instruments or other automatic devices for signal data acquisition and controlling. It has good EMC anti-interference capacity, low temperature drift, high sensitivity. This amplifier is widely used in strain gauge or load cell signal amplification and measurement in industrial site.
Main Features
• Waterproof design, good sealing of enclosure and cable joint.
• High accuracy conversion and amplification circuits embedded.
• 4-20mA current and 0-5V or 0-10V voltage signal output is switchable.
• Zero and span are easy to be adjusted through potentiometer terminals.
• Compatible with all kinds of full-bridge strain gauge bridge-type load cell, such as weighing, tension, compression torque, etc.
Technical Specifications
| Parameters | TYP Value |
| Accuracy: | Better than 0.3% F.S. |
| Loading Capacity: | Parallel connection max. 4 x load cells of 350Ω |
| Sensitivity: | 2.0mV/V, ±10% |
| Input Signal : | mV Signal, full-bridge load cell sensor signal |
| Output Signal: | Default 4-20mA and 0-5(0-10)V (switchable) |
| Voltage output impedance: | >5kΩ |
| Current output impedance: | ＜500Ω |
| Voltage Zero adjustment: | Fine: 10% F.S. Rough: 40% F.S. |
| Voltage Span adjustment: | 10% F.S. |
| Current Zero adjustment: | 10% F.S. |
| Current Span adjustment: | 10% F.S. |
| Power Supply : | DC24V (18-27VDC range) |
| Max. power consumption: | 4W(4 x 350Ω sensor, output 20mA.) |
| Load Cell Excitation Voltage: | 5V+ ±5%(Suitable for 5-12V excitation volt. sensor) |
| Load Cell Excitation Current: | ＜60mA |
| Temperature Coefficient: | better than 100ppm |
| Enclosure Material: | ABS |
| Net Weight: | 100g |
| Installation Hole Size: | 2×Φ3 |
| Enclosure Protective Class: | in compliance with IP65 |
| Installation Mode: | Enclosure fixed installation |
| Wiring type: | Wiring terminal blocks |
| Dimension: | 115 x 58 x 33 mm (L x W x H) |
| Working Temperature: | 0-50℃/85%RH, non-condensation. |
| Storage Temperature: | -20- +80℃/85%RH, non-condensation. |
Load Cell Amplifier Circuit for Wiring
Dimension
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