Pressure sensor for Volvo loaders/excavators 17215536

Working principle:

The weighing system of loader is generally divided into two parts, signal acquisition part and signal processing and display part. The signal acquisition part is generally realized by sensors or transmitters, and the accuracy of signal acquisition is very important to the weighing accuracy of loaders.

1. Static weighing system

It is often used to refit existing loaders or forklifts. Because there is no proper weighing equipment on site, and users need to measure for trade settlement, in view of the user's demand for refitting costs, static measurement is usually chosen.

Static metering and weighing equipment consists of: pressure sensor (one or two, depending on the accuracy requirements)+common weighing display instrument (printer can be selected if necessary)+installation accessories (pressure pipe or process interface, etc.).

General characteristics of static weighing:

1) When weighing, the position of the weighing hopper should be consistent to ensure the accuracy of weighing, thus affecting the weighing efficiency; 2) The equipment has few functions, and many tasks need manual assistance, such as recording and calculation.

3), suitable for short-term workplaces, without a lot of data processing;

4), low cost, suitable for some individual business units or small units;

5) Less parameters are involved, which is convenient for installation and debugging.

2. Dynamic weighing system

Dynamic weighing system should be selected for the loading measurement of stations, ports and other large units to meet the needs of rapid and continuous measurement and mass data management.

Dynamic metering and weighing equipment mainly includes: pressure sensors (2 pieces)+dynamic control instruments (with printing function)+installation accessories.

Main functions and characteristics of dynamic metering and weighing equipment:

1) Cumulative loading, weight setting, display and overweight alarm functions;

2) The functions of weighing, accumulation and display of single bucket weight;

3), truck model selection or input function, truck number input function;

4), operator, loader number and loading station code input function;

5) Recording function of operation time (year, month, day, hour and minute);

6) The functions of storing, printing and querying the basic job data;

7) Dynamic sampling and fuzzy algorithm are adopted to realize dynamic calibration and dynamic weighing, and automatic weighing is realized during lifting without stopping the bucket;

8), use the loader power supply.

9) Double hydraulic sensors and high-precision A/D converter are adopted, so the accuracy is higher.

10), can be set to zero automatically or manually.