Difference between vector weighing and volume weighing of organic fertilizer

In the production, packaging and sales process of organic fertilizer, the differences between vector weighing and volume weighing are mainly reflected in the application scenarios, measurement principles and equipment types, which are detailed in the following examples of organic fertilizer:

1. Vector weighing: precise control of raw material ratio

Application scenario: raw material mixing and ratio of organic fertilizer production. For example, the production of each ton of organic fertilizer requires a ratio of 500 kilograms of cow manure, 300 kilograms of duck manure, 200 kilograms of bacterial residue and 100 grams of RW bacterial agent. At this time, it is necessary to use vector weighing equipment (such as dynamic weight loss scale or static battering scale) to accurately measure the weight of each raw material to ensure that the ratio is accurate and the quality of organic fertilizer is stable.

Measurement principle: Based on Newton's second law (F=mg), the sensor dynamically monitors the gravity of the material and calculates the mass in real time. For example, during the dynamic batching process, the weight loss scale continuously measures the weight loss of the material in the hopper to ensure the accuracy of the ratio.

Device type:

Static batching scale: Used in small-scale production to weigh materials at rest.

Dynamic weight loss scale: used for large-scale continuous production, the material is weighed in the process of movement, high efficiency.

2. Volume weighing: Optimize storage and transportation

Application scenario: organic fertilizer packaging and sales, measuring the volume and weight of packaging containers. For example, the bag of organic fertilizer needs to measure the volume of the bag (length × width × height) and net weight in order to calculate storage space and transportation costs (logistics companies often charge by "volume weight").

Measurement principle: The package outline is scanned by 3D vision technology, the geometric volume (V= length × width × height) is calculated, and the net weight is obtained by combining with the weighing sensor. For example, the automatic combination scale packaging machine will vibrate the material to close to the target value according to the preset weight.

Equipment type: Automatic combination scale packaging machine: microcomputer control, multi-hopper combination weighing, suitable for granular organic fertilizer quantitative packaging.

Volume measuring instrument: Integrated in the logistics sorting line to quickly measure package volume and assist freight calculation.

3. Comparison of applicable scenarios

Application Scenario                               Vector weighing                            Volume weighing

Continuous production line batching     ✔️ (high precision)                      ❌ (large error)

Warehouse logistics measurement          ❌ (need fixed installation)        ✔️ (quick measurement)

Bulk organic fertilizer estimation             ❌ (stable support required)      ✔️ (suitable for loose materials)

Automatic packaging                               ✔️ (precise control)                    ✔️ (suitable for large packaging)

Vector weighing is more suitable for precise ingredients (e.g. organic fertilizer production lines).

Volume weighing is more suitable for logistics and warehousing (such as estimating the volume weight of fertilizer bags).

4. Influencing factors of accuracy

(1) Key error sources of vector weighing:

Mechanical vibration (e.g. conveyor belt shaking).

Electromagnetic interference (well grounded).

Sensor drift (need regular calibration).

(2) The key error source of volume weighing

Change in material packing density (e.g. humidity effect).

3D scanning error (inaccurate edge recognition).

Manual measurement deviation (e.g. irregular packaging).

5. Practical application cases

Vector weighing: An organic fertilizer plant uses a dynamic weight loss scale to continuously transport cow manure, bacterial residue and other raw materials to the mixer according to the ratio, and the sensor monitors the weight in real time to ensure that the error of each batch is less than 0.5%.

Volume weighing: The logistics center uses an automatic combination scale packaging machine to package organic fertilizer, set a net weight of 25 kg per bag, the equipment vibrates the material to 24.9-25.1 kg after sealing, while the volume measuring instrument records the package size, calculate the volume weight to check the freight.

Vector weighing and volume weighing serve different links of organic fertilizer production, the former to ensure product quality, the latter to optimize logistics efficiency, the combination of the two can achieve accurate management of the whole process from production to sales.