Electrical casing tester installation and use method - Database & Sql Blog Articles

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Electrical casing pressure tester structure:

The testing machine consists of a base, hydraulic mechanism, lifting platform, and dial gauge deformation measuring device. This setup ensures accurate and reliable performance during pressure tests. The design is simple yet effective, making it ideal for both industrial and laboratory environments.

Electrician casing pressure testing machine

This equipment complies with standards such as JG/T3050 "Insulation Electrical Bushings and Fittings for Construction," GB/T14823.2 "Special Requirements for Electrical Installation Pipes - Rigid Insulation Material Flat Pipes," and ZBG33008 "Polyethylene Plastic Corrugated Wire Pipes." Compared to other testing machines, this one offers constant pressure control, precise outer diameter change measurement, user-friendly operation, and intuitive results. These features make it widely used in various applications.

Electrician casing pressure testing machine

Installation and use:

1. Loosen the securing strap, clean the surface of the testing machine, and re-lubricate the moving parts with light oil.

2. Adjust the base so that it is level and stable.

3. Place the test sample in the center of the lifting platform. Manually operate the jack (make sure the bleed valve is closed first) to bring the sample into contact with the square iron block. At this point, do not apply pressure. Then adjust the dial indicator to zero.

4. Turn on the display power and set the reading to zero.

5. Select the appropriate pressure value based on the type of pipe being tested.

6. Measure the initial outer diameter D1 of the sample. Place the sample on the lifting plate, tighten the return valve stem, and pull the handle to raise the platform. Once the sample touches the indenter (square iron block), before the top of the indenter makes contact, adjust the dial indicator to the working position. After tightening the screw, fine-tune the knob until the dial reads “0.”

7. Continue raising the platform until the top of the indenter contacts the sample, then gradually increase the force within 30 seconds.

8. Record the dial gauge reading after one minute. This value represents the difference between the original outer diameter D1 and the flattened outer diameter D2. It should not exceed 25% of D1.

9. Loosen the fastening screw, let the adjustment rod drop, and release the return valve stem. The platform will slowly lower due to the damping effect of the jack. You may need to press it down manually to reach the lowest point.

10. After another minute, measure the outer diameter D3 of the flattened sample using a vernier caliper. The difference between D3 and D1 should not exceed 10% of D1.

11. Finally, inspect the surface of the sample for any cracks or damage.