Electrical Performance Parameters

Transportation Conditions

· Temperature: -40°C to +60°C;

· Humidity: 95% (+40℃);

· Vibration: 50 m/s ²；

· Impact: 500 m/s ²。

Installation Techniques and Electrical Connection Technologies

1 Sensor Body Installation

When using, first install the sensor. Select an appropriate measurement point on the device under test; at this location, there should be a smooth, flat surface with a diameter of at least φ24 to facilitate sensor installation. To ensure accurate vibration acceleration data and ease of use, the sensor must be securely mounted in the correct sensitive direction. Follow the recommended sequence below for proper tightening and installation.

1.1 Screw Installation Method

The bottom surface of the sensor should remain clean and smooth. Ideally, apply a thin layer of grease or wax oil between the sensor and the surface of the object being measured to enhance contact stiffness, then securely fasten it using the specified screws to achieve the sensor's calibrated frequency response characteristics.

Screw installation: A recommended installation torque is 3 Nm.

1.2 Adhesive Installation Method

When drilling into the test object is not permitted, equipment owners may use adhesives approved for this purpose, such as "502" superglue, Loctite "454," or other fast-drying glues, as well as alternatives like epoxy resin adhesives or double-sided adhesive tapes. However, adhesive mounting can slightly affect the sensor's frequency and amplitude characteristics, sometimes leading to measurement errors that are unacceptable. Additionally, adhesive installation is relatively sensitive to temperature changes, so careful selection should be made based on the specific conditions of the project.

1.3 Magnetic Suction Base Method

The method of installing the magnetic base can lead to a reduction in the upper limit of the vibration accelerometer's frequency response, as well as abnormal low-frequency performance. Therefore, it should be used with caution. When this installation method is employed, the measurement range tends to become more limited, and the magnetic attraction force is significantly affected by temperature—once a certain temperature threshold is reached, the magnet's magnetic capability rapidly degrades. Please be aware of these factors and choose carefully.

2 Electrical Connection Technology

This product features a two-wire IC circuit for its vibration section; therefore, it must be powered by a constant-current source. Directly connecting it to a DC power supply or using any other method of power supply is strictly prohibited, as this could easily damage the internal components and result in no output. The correct electrical connection is illustrated in the diagram below:

3 Cable Connection Technology

The selection of cables should comply with relevant standard specifications. In harsh environments characterized by high temperatures, high humidity, and exposure to acids, alkalis, or salt spray, cable assemblies meeting the appropriate protection ratings must be chosen. If necessary, protective flexible sealants should be used to fill any gaps, effectively preventing moisture intrusion as well as isolating against acidic, alkaline, and salt-spray effects. After completing the electrical connections, the cables should be securely fixed as close as possible to the sensor end. Whenever feasible, sensors should be positioned away from areas with strong acids or strong bases, minimizing the risk of contamination that could compromise the electrical contacts or degrade the overall performance of the electrical connections.

The maximum cable length for connecting the sensor to its associated equipment is 100 meters. However, excessively increasing the connection length may lead to a risk of attenuation in the high-frequency components of the vibration signal, as well as greater errors in temperature detection and increased interference signals.

Cables should prioritize products that meet the following specifications: cable cross-sectional area ≥ 0.5 mm² ² ; Distributed capacitance is no more than 0.1 μF/km; line resistance is no more than 50 Ω/km.