Explosion-proof weighing module can reduce the influence of "static uncertainty" of multi-fulcrum balance of weighing platform by adjusting the stress consistency of sensors, and ensure the stability of weighing platform support, so as to ensure that the bearing capacity of the center of gravity of weighing platform does not deviate, and achieve the accuracy of weighing instrument and relevant metering performance requirements. The weighing module has been compensated in many ways, including output sensitivity compensation.
020-34563445The weighing module is a mass (weight) measurement method that converts mass (weight) into electricity through a force structure. The output power signal corresponds linearly to the input quality (weight) signal in a single value; Has the required accuracy and high sensitivity; Has good frequency response characteristics and low inertia; Has little impact on the state of the object being referred to; Capable of working in poor environmental conditions; Good stability, reliability, and long lifespan. The working principle of the weighing module and the bridge assembly method of strain gauges. The data acquisition system consists of lower computer hardware and upper computer software. The software adopts LabVIEW programming technology. The wheel load weighing module obtains the radial pressure of the wheel on the tipping table. The strain gauges under the tipping table generate strain due to the force. The lower computer obtains data signals, and through the serial communication module, the lower computer and upper computer data acquisition system transmit instructions and data. The collected signals are processed and the information is conveyed to the user by the upper computer panel This system has functions such as data acquisition and processing, real-time data display and storage, data post-processing, and monitoring of working temperature.
The weighing module adopts a weighing sensor, and the upper and lower ends of the weighing sensor are respectively connected to the upper connecting plate and the lower connecting plate through an upper bearing pressure head and a lower bearing pressure head. The lower connecting plate is equipped with a limit sleeve, and the weighing sensor is set inside the limit sleeve. The upper end of the limit sleeve is supported by a rubber sleeve set outside the upper bearing pressure head. A scale body plate is set above the upper connecting plate, and the scale body plate is connected to the lower connecting plate through a limit rod. The rubber sleeve is set on the outer circumference and bottom edge of the upper bearing pressure head. The upper part of the rubber sleeve is fixed by a first locking throat clamp and pressed against the upper bearing pressure head. The middle part of the rubber sleeve is equipped with a connecting part that extends outward and cooperates with the limit sleeve. It is circular in shape, with the outer edge and middle of the connecting part extending downwards to form a circular groove for inserting the upper end of the limit sleeve, A locking throat is installed on the outer side of the connecting part to fix the high elastic rubber sleeve and the limit sleeve; There are two limit rods on the left and right sides. The bottom of the limit rod is connected to the lower connecting plate and fixed by a nut. The top of the limit rod is connected to the scale body plate. There are circular holes on both sides of the scale body plate for the upper end of the limit rod to pass through. The top of the limit rod is fixed by a locking nut through the circular hole that passes through the scale body plate with a gap. There is a 5mm gap between the locking nut and the scale body plate; The upper bearing pressure head is fixed to the upper connecting plate, and the upper connecting plate is fixed to the scale body plate through screws. The upper and lower ends of the weighing sensor are connected to the upper bearing pressure head and the lower bearing pressure head through gap fitting. There are several reinforcing ribs supported between the lower outer surface of the limit sleeve and the lower connecting plate, and the lower connecting plate, limit sleeve, and reinforcing ribs are fixed by welding. The reinforcing rib plate is in the shape of a right angled trapezoid, consisting of 4 pieces, evenly distributed along the outer circumference of the limit sleeve. The middle side of the limit sleeve is equipped with an outlet, and a waterproof connection joint is provided at the outlet. The lower end of the lower connecting plate is connected and fixed to the foundation embedded plate.
Technical parameters
*Rated load (R.C.): 10, 15, 20, 25, 30, 50T
*Rated output (R.O.): 2 ± 0.0050mV/V
*Zero point balance: ± 0.015mV/V
*Comprehensive error: ± 0.03% R.O
*Nonlinear: ± 0.03% R.O
*Lag: ± 0.03% R.O
*Repetition: Sex ± 0.02% R.O
*Creep (30 minutes): ± 0.03% R.O
*Normal operating temperature range: -10...+40 ℃
*Allowable working temperature range: -20...+70 ℃
*Temperature effect on sensitivity: ± 0.02% R.O./10 ℃
*Temperature effect on zero point: ± 0.02% R.O./10 ℃
*Recommended excitation voltage: 10V (DC/AC)
*Maximum excitation voltage: 15V (DC/AC)
*Input impedance: 770 ± 10 Ω
*Output impedance: 700 ± 5 Ω
*Insulation impedance:>5000M Ω
*Safe overload: 150% R.C
*Extreme overload: 300% R.C
*Elastic element material: alloy steel
*Protection level: IP68
