The information collection and processing technology of explosion-proof electronic weighbridge can uniquely and effectively identify the entity object through radio frequency signals. Generally, the tag, reader and weighing support platform are the bridge connecting hardware weighing equipment such as tag, reader and enterprise application software such as enterprise resource planning (ERP) and customer relationship management (CRM).
020-34563445Explosion-proof weighbridge is a new electronic weighing technology based on the traditional resistance strain sensor, combined with the integration of modern microelectronics technology and explosion-proof weighbridge microcomputer technology.
The explosion-proof Electronic scale adopts a resistance strain gauge weighing sensor, and the explosion-proof electronic scale consists of four weighing elastomers on the base. The resistance strain gauges attached to the elastomers are perpendicular to each other along the axial direction. When the sensor is under pressure, the elastomers are slightly deformed, and the strain gauges attached to them are slightly deformed, which leads to their resistance changes. In order to measure the resistance changes, the weighing sensors are connected into a bridge circuit. When the sensor is not acted by external force, the bridge is balanced. When the sensor is acted by external force, the terminal voltage of CD is not equal. The voltage change is measured by the amplifier circuit and converted into the corresponding quality value for display.
Made of SMT surface mount technology, it mainly includes: amplifier, "A/D" converter, microprocessor (CPU), memory (E2prom), interface circuit (RS485) and digital temperature sensor.
The explosion-proof electronic weighbridge uses RS485 interface to communicate with digital weighing sensors. At present, at most 10 digital weighing sensors can be externally connected (more than 10 need to be customized), manual/automatic off-balance adjustment (four-corner adjustment) can be performed, and a single sensor can be automatically addressed and read data, and the sensor number can be automatically modified on site.
It can process data, such as displaying, calibrating, sending, storing and printing.
Technical indicators
Accuracy grade: OLMLⅢ, and dividing value: ≥2000.
Working temperature (℃): (instrument -10 to +40) (scale -30 to +65)
Power supply: AC 220v (-15% to+10%), frequency: 50 1.
One set of electronic weighing platform (including sensor, connector and junction box)
One weighing display instrument
A printer
One set of embedded bottom plate, one set of limit support and one set of fasteners.
One signal cable (50m)
Computer and weighing management software, large screen display, regulated power supply, lightning protection device
