In order to keep the measuring instruments in use in a normal and intact state and ensure the accuracy and reliability of the measurement, the operators of measuring instruments should use the measuring instruments and instruments correctly and reasonably, and do daily maintenance work. The correct use and maintenance of measuring instruments and instruments shall be carried out as follows.

First, large instruments:

1. The operator shall carry out necessary technical training, obtain the post certificate, be familiar with the operating instructions of the instrument, understand the working performance, the role and usage of the accessories, and operate in strict accordance with the operating procedures.

2. The operating environment of the instrument, such as temperature, humidity, anti-magnetic field, shock-proof, moisture-proof and dust-proof conditions shall meet the specified requirements.

Regular maintenance, such as the working guide rail working surface should be oiled, electrical appliances should be regularly energized, etc., anti-rust, anti-mildew measures are correct.

In addition to the professional maintenance personnel of the instrument, no one shall be arbitrarily disassembled and adjusted, and the seal of the sealed part shall not be destroyed, so as not to destroy the performance of the instrument.

At the end of the use of the instrument, the parts that may affect the performance of the instrument, such as hand contact with non-paint parts, carry out necessary maintenance, cut off the working power supply, and make a good shift record.

Two, three categories of measuring tools

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1, calipers include vernier calipers, calipers with table, electronic digital display calipers, height calipers, depth calipers and other calipers.

Civilized operation, reasonable use, after use should be placed in the tool box, do not mess with.) f&

2. The caliper can not be used as other tools, such as when the hammer hits the workpiece, and the caliper's measuring claw is a scribing tool.

3, before use, the user should wipe the oil on the measuring surface of the caliper, check whether the function of each part of the caliper is normal and reliable, and whether the "0" bit is accurate. When the two measuring surfaces of the caliper outer measuring claw are closed, there should be no visible white light (visible blue light is allowed).

4. In use, the workpiece can not be measured when the machine tool is still rotating, so as to prevent the measuring personnel from danger and damage the measuring tool, and the workpiece to be measured should be carried out after the static state.

5. Measuring the workpiece with the caliper measuring claw, can not measure the diameter of the inner hole within 10mm.

6. Electronic digital calipers should avoid water and other liquid substances into the ruler frame, so as not to damage the electronic components.

7. After use, it is necessary to maintain the caliper, wipe the oil, iron debris, such as the caliper in contact with water, need to scrub clean with clean gasoline, (do not use acetone, alcohol), and then apply anti-rust oil on the working surface. Before the caliper is placed into the measuring box, the two measuring surfaces should be kept in a certain gap to prevent corrosion of the caliper measuring surface.

8. When the electronic digital caliper does not use the data outlet end, do not remove the port cover, and do not touch the metal device arbitrarily to the output end, so as not to damage the electronic components.

9. Find that the caliper is faulty or the value is not accurate, report it in time, and the factory metrology personnel will handle it.

Third, differential measuring tools:

1. Differential measuring tools mainly include outer diameter micrometer, internal micrometer, thickness micrometer, etc., including micrometer, lever micrometer, etc.

2. Civilized operation, reasonable use, the micrometer should be placed in the tool box after use, do not take it carelessly.

Do not use the micrometer as other tools, such as when the hammer hits the workpiece.

3. Before use, the user should wipe the oil on the measuring surface, check whether the function of each part of the micrometer is normal and reliable, and whether the "0" bit is accurate.

In use, the workpiece can not be measured when the machine tool is still rotating, so as to prevent the measuring personnel from danger and damage the measuring tool, and the workpiece to be measured should be carried out after static.

4. If the micro component has a force measuring device, the force measuring device shall be used to measure the workpiece; When adjusting the measuring range, the ruler body should be held in hand and the differential cylinder should be turned to shift the measuring rod to the desired position.

After use, it is necessary to maintain the micrometer, wipe the oil, iron debris, such as the measuring surface in contact with water, need to scrub clean with clean gasoline, (do not use acetone, alcohol), and then apply anti-rust oil on the working surface. Before the micro-classification measuring tool is put into the measuring tool box, a certain gap should be maintained between the two measuring surfaces to prevent corrosion of the measuring surface.

If the micrometer is found to have a fault or the value is not accurate, report it in time and deal with it by the metrology personnel of the factory. ,c) Table type measuring tools:

(b table type measuring instruments mainly include dial indicator, lever dial indicator, inner diameter dial indicator, dial indicator, etc.

Civilized operation, after use, the table and accessories should be placed in the tool box, do not mess with.

No lubricating oil can be added to each working part of the table type measuring tool, so as not to affect the interaction and sensitivity of each working part of the table type measuring tool, resulting in inaccurate indication.

Before use, the user should check whether the function of each part is normal and reliable, and whether the "0" bit is accurate. Gently move the meter rod to check whether the back "0" bit of the pointer is stable. 4. In use, the workpiece can not be measured when the machine tool is still rotating, so as to prevent the measuring personnel from danger and damage the measuring tool, and the workpiece to be measured should be carried out after static.

5. Before measuring, the measuring rod should be compressed more than 0.3mm in the measuring range, and then re-adjust the "0" position to measure, in order to eliminate the gear mesh clearance and empty stroke.

6. Table measuring tools shall not be soaked in water or oil. If water or oil is found to enter the table, it should be cleaned by metering personnel.

7. Find that the table type measuring tool has a fault or the value is not accurate, timely report, by the factory metering personnel to deal with. 1. The installation site should be dry, ventilated, no corrosive gases, avoid strong sunlight, and there should be no magnetic field nearby. 2. The division number of the primary instrument and the secondary instrument should be consistent, and the division number of the compensation wire and the thermocouple should also be consistent. The rating of the AC power supply must be consistent with the power rating required by the meter.

3. After the instrument is installed, ground the instrument with an insulated wire with a diameter of 2 to 3mm. At the same time, check whether the power cord and the connection line of the primary instrument are firm and reliable, and whether the connection of the phase line, middle line and ground line of the instrument power supply is correct. The instrument used for temperature control should be set and checked for correct setting. 4. Always keep the environment around the instrument and the instrument itself clean.

5. The operation of the instrument should be observed frequently on site. If you observe whether the indicator light is on, whether the digital display is normal, if not, check whether the instrument fuse is burned, whether the power switch is damaged; The DC power supply of the digital display part is normal, and the connectors are in good contact. If the site cannot be excluded, the metering personnel should be notified to deal with it.

6. Check whether the display of the instrument has regular skipping and record balance failure. If there is such a phenomenon, it should be checked whether the measured signal is normal, whether the grounding is good and whether there is strong magnetic field interference around.

7. If the control or alarm of the instrument electrical contact is found to be faulty, check whether the setting value is normal, and whether the relay and connection line are good.

8. For long-term use of instruments, changes in sensitivity should be checked. 9. The instrument should have a special person responsible for maintenance and maintenance, and non-management personnel are strictly prohibited.