ICS-ST electronic belt scale operating principle, composition and characteristics of the description.

1. Equipment composition

ICS-ST series electronic belt scale produced by xuzhou sanyuan weighing technology co., LTD is the ideal equipment for continuous measurement of bulk materials. This system is mainly composed of weighing bridge, safety type weighing sensor, safety type speed sensor, measuring drum, belt scale host and auxiliary equipment.

2. Working principle

A weighing bridge with load sensors mounted on the rail of the conveyor detects the weight of the material on the belt and produces an electrical output signal proportional to the belt load. The speed sensor is directly connected to the driven drum or the speed measuring drum and provides a series of pulses, each pulse representing a belt motion unit, the frequency of which is proportional to the belt speed.

When the material passes through the scale, the weight signal and speed signal are sent to the secondary instrument, which is amplified and A/D converted to calculate the instantaneous flow and accumulation, and displayed on the front panel of the weighing display.

When the weighing display is displayed, the communication interface of rs-485 is provided.

3. Structure and performance characteristics

3.1 ics-17a weighing bridge frame (weighing bridge frame is optional: 17A,17B,30)

· double lever, four idlers, two weighing sensors, verification accuracy: ±0.25%;

· rectangular steel, with strong rigidity, minimizes the dust on the scale surface area;

· the fulcrum is made of non-friction rubber trunnion fulcrum, which is moisture-proof, dustproof, anti-corrosion, anti-vibration and anti-off-load;

· unique sensor connection structure, stable weighing, simple installation, easy maintenance and long service life;

· simple weighing bridge structure, no moving parts, less maintenance;

· the weighing sensor adopts unique joint bearing and spherical pad connection, which has good recovery performance.

3.2 weighing sensor model: GZD0.1(coal safety certification product, certification number :MFB150299)

STC series products of weishi company are adopted, the protection level is IP67, the performance is stable, and the precision is better than 0.3‰. The specific parameters are as follows:

· nonlinearity: less than 0.03% of rated output

· repeatability: less than 0.03% of rated output

· delayed: less than 0.03% of rated output

· temperature sensitivity: ±0.0003%℃ at zero

· excitation voltage: 10VDC is provided by the integrator

3.3 speed sensor :GSH1500(coal safety certified product, certification no. :MFB150298)

· there is a unique soft connection between the speed sensor and the speed measuring drum. In normal operation, this connection mode avoids the sensor jitter caused by the previous axle sleeve hard connection, solves the hidden trouble that the speed sensor is not coaxial with the speed measuring drum when installed, and greatly reduces the damage of the speed measuring sensor.

· the inside adopts a carbon-free brushless pulse generator, which does not need any adjustment and is mounted in a solid cast-aluminum shell, suitable for outdoor installation;

· applicable to 0.1m/s--4m/s speed equipment.

3.4 belt scale host: ics-st-z (coal safety certification product, certification number :MFC150135)

· all Chinese menu display, easy and flexible operation, easy for users to learn and remember;

· four rows of data show that flow, speed, cumulative quantity, load and time can be set to display on the same screen;

· 50 times of sigma -△A/D conversion per second, the overall accuracy of the machine is better than 0.01%;

· guided menu operation, the instrument is equipped with self-diagnosis, alarm prompt, pulse output, and automatic zero adjustment and zero tracking functions of manual/automatic air balance, and can realize automatic correction of simulation or physical inspection errors;

· it has extremely reliable data protection circuit of self-rechargeable battery, which can protect the data from power failure and keep the data for 10 years;

· 1 programmable digital input, which can be used for on-site state detection, etc.;

· with RS485 serial communication port for remote communication and control.