Common Faults and Repair Methods of Level Meter Calibrator
2.1 The rotation of the hand wheel is not stable, and there is a phenomenon of stagnation or jumping. The rotation of the hand wheel is not flexible. One is that the micrometer screw has dirt or rust; the other is that the components of the transmission mechanism do not fit well. the
Repair method
1) Remove the micrometer screw and clean it with solvent gasoline, and add appropriate amount of watch oil after polishing the rust. the
2) Reassemble and adjust the micrometer screw, fixed sleeve and micrometer tube, pay attention to symmetrical adjustment, and rotate the micrometer screw for inspection
2.2 When there is a deviation in the zero position of the vertical and horizontal levels, you can first turn the handwheel of the tester to make the indicated value at the midpoint of the range, and place frame (or strip) levels on the workbench first horizontally and then vertically. Adjust the foot screw to zero the spirit level of the spirit level. Observe the level of the spirit level calibrator, the horizontal level can be
After the fastening screw is slightly loosened, tap the bottom of it with a wooden hammer to set zero; the vertical level can be set to zero through two adjustment screws. When the left (or right) screw is screwed into the corresponding left to move (or right).
2.3 The backhaul error exceeds the requirements of the regulations
The factors that affect the return error mainly include the following aspects:
1) The top and anvil at the rotating shaft of the worktable are too tightly clamped. When repairing, loosen the fastening screws first, and unscrew the anvil blocks on both sides symmetrically, so that the anvil blocks just touch the top, or leave an appropriate amount of clearance.
2) The influence of micrometer screw and accessories.
For example, the degree of tightness of the rotation of the micrometer screw is inconsistent, or there is shaking between the micrometer screw and the handwheel, etc. When repairing, it needs to be disassembled, inspected and reassembled.
3) There is a bruise at the contact point between the fulcrum of the workbench and the upper anvil. When repairing, just loosen the hexagonal screw on the back of the upper anvil, and rotate the upper anvil slightly to make the fulcrum deviate from the bruised part of the upper anvil.
The level meter calibrator is widely used in enterprises and measurement units, and the technical requirements for debugging and repairing are very high. We need to practice continuously, sum up experience, and improve the standard of operation. Starting from the principle of instrument structure, this paper analyzes the causes and treatment methods of instrument failures, hoping to provide technical reference for relevant staff.
