HBM sensor product installation points introduction

HBM sensor product installation points

1. The mounting surface of the base on which the hbm sensor is installed should be smooth and clean without any oil film or film. The mounting base itself should have sufficient strength and rigidity and is generally required to be stronger than the strength and stiffness of the sensor itself.

2, the weighing sensor should be handled lightly, especially the small-capacity sensor made of alloy aluminum made of elastomer, any impact, drop, its metering performance may cause great damage. For large-capacity load cells, in general, it has a large self-weight, so it is required to use appropriate lifting equipment (such as chain hoists, electric hoists, etc.) when handling and installing.

3. The loading direction of each load cell is determined, and when we use it, we must load the load in this direction. Lateral forces, additional bending moments, and torque forces should be avoided as much as possible.

4. Level adjustment: There are two aspects to the level adjustment. First, the mounting plane of the single sensor mounting base should be leveled with a level. On the other hand, the mounting surface of the mounting base of multiple sensors should be adjusted to a horizontal surface (water level gauge), especially the number of sensors is more than three. In the weighing system, this should be noted. The main purpose of this is to make the load on each sensor basically the same.

5. Some “baffles” should be placed around the HBM load cell, and even the thin metal plate should be used to cover the sensor. This prevents debris from smudging the sensor and some moving parts, and this "staining" tends to make the movable part uncomfortable and affects the weighing accuracy.

6, as far as possible to use automatic positioning (reset) role of structural accessories, such as spherical bearings, joint bearings, positioning fasteners. They can prevent some lateral forces from acting on the sensor. It should be noted that some lateral forces are not caused by mechanical installation, such as lateral forces caused by thermal expansion, lateral forces caused by wind, and lateral forces caused by vibration of the agitator on some container scales are not caused by mechanical installation. .

7. Some instruments on the scale must be attached to the scale body (such as the conveyor pipe of the container scale). We should let them be as soft as possible in the direction of the sensor loading the spindle to prevent them from "eat" the sensor. The actual load is combined to cause an error.

8. The HBM sensor should be electrically bypassed with hinged copper wires (approximately 50 mm2 cross-section) to protect them from welding current or lightning strikes.

9. Although the load cell has a certain overload capacity, the overload of the sensor should be prevented during the installation of the weighing system. It should be noted that even a short overload may cause permanent damage to the sensor. During the installation process, if it is necessary, you can replace the sensor with a height block such as a sensor. At the end, replace the sensor. In normal operation, the sensor should generally be provided with mechanical components for overload protection.

10. The system has no movement and unsatisfactory phenomenon, which can be judged by the following methods. That is to say, add or subtract about one thousandth of the rated load on the weighing platform to see if the weighing indicator is reflected, and there is a reflection that the movable part is not "stained".

11. If the screw is used to fix the sensor, a certain tightening torque is required, and the screw should have a certain screwing depth. In general, the fixed screw uses a high-strength screw.

12. In the use of HBM sensors, strong heat radiation must be avoided, especially strong heat radiation on one side.