High precision digital truck scale

In the field of electronic weighing, with the development of electronic measurement technology and microelectronics technology, electronic weighing technology has also achieved a transition from analog weighing to digital weighing, representing the development trend of electronic weighing technology. The digital car scale that applies digital weighing technology is undoubtedly one of the more advanced electronic car scales currently available.

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Static accuracy level: OIML III level

Static weighing accuracy: 0.1%

Scale platform stiffness: better than 1/1000

Safe overload: ≥ 150%

Extreme overload: ≥ 250%

Scale body structure: modular structure

Sensor parameters:

Comprehensive accuracy: OIML C3

Creep (30 minutes): ± 0.013% F.S

Nonlinear: ± 0.010% F.S

Lightning protection capability: 10000A (* * * major test indicator)

***Maximum overload: 300% F.S

Instrument parameters:

Accuracy level: Complies with OIMLR76, GB/T7723-2008 national standard level III

Display division value: 1/2/5/10/20/50/100 optional

Baud rate: 600-9600 optional

Temperature drift: ≤ 50ppm/℃

Relative humidity: ≤ 85% R.H

Nonlinear error: ≤ 0.005% F.S, including nonlinear automatic correction software

Input signal range: RS485, RS232, or 4-20mA current loop interface

Advantages of steel structure truck scale products;

Introduce specialized equipment such as large-scale "automatic welding robots", "large-scale automatic pre arching machines", "CNC bending machines", "CNC shearing machines", "CNC laser cutting machines", etc. The main beam of the scale body is bent into a U-shaped beam by the specialized equipment. The U-shaped steel structure scale body is currently the most reasonable electronic vehicle scale body structure in China. The U-shaped steel load-bearing main beam is cut according to length without joints, and has higher welding strength than ordinary steel main beams with joints; The spacing between U-shaped steel support scales is 1/2 smaller than that of ordinary scales, and is close to the width of car tires, indicating good load-bearing performance of the scales.

● High precision:

Digital weighing instruments directly process digital signals, eliminating the shortcomings of analog weighing instruments in the "sensitive area". The anti-interference and on-site adaptability of the instruments have been greatly improved, and the ability of high-precision measurement has been greatly enhanced, providing the possibility for the implementation of high-precision weighing systems.

Strong anti-interference ability:

Due to the direct completion of A/D conversion inside the sensor, the sensor directly outputs digital signals, overcoming the disadvantage of being easily interfered in the transmission of small analog signals in traditional analog sensors, enhancing the anti-interference ability of the system, and improving the resolution and stability of the signal.

● Intelligence:

The digital car scale instrument is more concise, convenient, and user-friendly in fault detection, accurate on-site identification of faulty sensors, automatic digital angle correction during installation and debugging, digital linear correction, and independent sensor measurement value detection.

Strong measurement adaptability:

Digital instruments have lower requirements for the on-site use environment and sensor sensitivity of car scales compared to analog car scales, and have a wider range of signal processing than analog car scales.

● Anti cheating:

The transmission and processing of pure digital signals eliminate the possibility of measurement cheating by changing analog signals, enhancing the safety and accuracy of automobile weighing.

	Characteristics of body measurement: (1) The height of the main beam is 360mm. The bending strength can be increased by 50%; (2) Continuous welding ensures that the inner cavity of the weighing platform is fully sealed and not easily rusted; (3) The scale platform adopts a U-shaped main beam, effectively solving the measurement error caused by the bending of the scale platform; (4) Large shot blasting equipment is used to remove rust and scale, improve the roughness of metal surfaces, and enhance the adhesion of anti rust paint (5) Improve the corrosion resistance of the weighing platform and extend its service life (6) Reduce the welding stress of the scale body by shot blasting, which can effectively reduce the welding stress by nearly 70% (7) The scale platform has undergone full load loading and unloading experiments using a large fatigue testing machine, and there is no deformation on the scale platform;
	High precision weighing sensor 1) High precision, high reliability, and good stability; 2) Adopting a bridge structure, capable of automatic reset and centering; Good resistance to lateral forces and impact; 3) Easy installation and good interchangeability; 4) By adopting advanced A/D conversion technology and intelligent filtering and compensation algorithms, a stable output of 100 Ten thousand codes (with an internal resolution code of 16 million codes); 5) Using a 4-wire RS485 transmission system (with a total of 6 wires for power supply), full duplex transmission provides faster speed, Higher reliability of transmission; 6) Reliable data storage technology ensures that module parameters are not lost; 7) Has good electromagnetic compatibility performance and super strong electrostatic protection capability; 8) Adopting a low functionality design, the function is only 11mA, and the power consumption of the digital sensor is about 25mA. It can have Effectively reducing heat generation and extending transmission distance.
	Digital weighing display (with printing) 1) The microcontroller has fast speed and good compatibility with different protocols ● Can view the output signal of a single digital sensor ● Can automatically/manually correct the four corner deviation; Automatically detect the working status of each digital sensor ● Optional second digital sensor interface to improve signal acquisition speed and solve the problem of connecting two types simultaneously Compatibility issues of digital sensors with different protocols. 2) Replacing the meter does not require recalibration: the instrument consistency is good. Replacing the meter does not require recalibration, simply input the original instrument The parameters can be used. 3) Remote upgrade and restructuring: Provide (ISP) remote upgrade and restructuring services. 4) Customized Chinese printing: Custom printing format, optional serial printing interface and thermal printer. 5) Reliable protection and anti-interference: adopting hardware protection measures to effectively reduce external interference and interface damage.
	Signal junction box 1) Stainless steel shell, dedicated sealing joint, durable and well sealed; 2) Adopting high-precision, low drift resistors and potentiometers to ensure the accuracy and stability of the system's operation; 3) Sensor wiring and signal cable connection should be equipped with wiring terminals to ensure reliable connection. Welding points should be noted There is code identification, which facilitates user wiring.