I. Mechanical Installation Tools
1. Allen wrench or open-end wrench: Used to tighten M10×1.5 screws (common in GBD20 models) to ensure reliable connection between the sensor and the measured object.
2. Torque wrench (recommended range 5–20 N·m): Apply 10–15 N·m of torque as specified, avoiding overtightening to prevent damage to the threads or undertightening to prevent loosening.
3. Magnetic base and matching screws: Suitable for temporary testing or situations where drilling is not possible, ensuring the suction surface is clean and flat to maintain suction.
4. Fine sandpaper (400# or higher) and non-woven fabric: Used to polish the mounting surface, removing paint and rust, and improving contact coupling quality.
5. Alcohol or acetone cleaner: Wipe the treated mounting surface to prevent oil stains from affecting high-frequency response.
II. Electrical Connection and Testing Tools
1. Digital Multimeter: Used to measure whether the output current is within the 4–20mA range, verifying wiring correctness and signal stability.
2. Mining Flame-Retardant Shielded Cable (e.g., MHYVP type) and Crimping Pliers: Ensure the cable has intrinsic safety compatibility, and that the joints are firmly crimped and well-insulated.
3. Wire Strippers and Insulating Tape/Heat Shrink Tubing: Properly handle exposed wire portions to prevent short circuits or grounding faults.
4. Explosion-Proof Junction Box (Optional): Used to protect joints in high-risk environments, meeting Ex ib I Mb explosion-proof requirements.
III. Calibration and Auxiliary Tools
1. Vibration Calibrator (e.g., VC-1000 series): Used for post-installation frequency response and sensitivity calibration to ensure measurement accuracy.
2. Handheld Vibration Meter (for comparison): Used for signal comparison at the same measurement point; the deviation should be less than 10%.
3. Permanent marking pen or punch: Used to mark the location of testing points to ensure consistency in subsequent testing.
4. Insulating screws and washers: Used to achieve single-point grounding in environments with strong electrical interference, such as motors and frequency converters, suppressing ground loop noise.
✅ Key Note: All tools must comply with on-site explosion-proof and safe operation regulations. It is strictly forbidden to use metal tools that generate sparks in explosive environments.
