1. Place the meter in a horizontal position and check that the pointer of the galvanometer is on the centerline. Otherwise, adjust it to the centerline with the zero adjuster.
2. Set the "magnification scale" to the maximum multiple. Slowly turn the crankshaft of the generator while turning the "measuring dial" to point the galvanometer pointer on the centerline.
3. When the pointer of the galvanometer approaches equilibrium, speed up the rotation of the generator crank to reach more than 120 revolutions per minute, and adjust the "measuring dial" to make the pointer on the center line.
4. If the reading of the “measuring dial†is less than 1, the magnification should be set to a small multiple and the “measuring dial†readjusted to get the correct reading.
5. When filling in this record, it should be attached with the resistance test point plan, and the test points should be numbered sequentially.
Ground Resistance Tester Notes
1. The grounding line must be disconnected from the protected equipment to ensure the accuracy of the measurement results.
2. There should be no stray currents and polarized soil near the measured ground pole.
3. When the soil absorbs too much water after raining, and when the climate, temperature, pressure, etc., change drastically, it cannot be measured.
4. The probe should be far away from large metal bodies such as groundwater pipes, cables, and railways. The current pole should be more than 10m away and the voltage pole should be more than 50m away. If the above metal body is not connected to the grounding grid, the distance can be shortened by 1/2. ~1/3.
5, the connection line should use well-insulated wire, so as to avoid leakage phenomenon.
6. Pay attention to the position where the current pole is inserted into the soil and the grounding rod should be at zero potential.
7, the test should be selected when the soil resistivity is large, such as when the early winter or summer dry season.
8, the test site can not have electrolytic material and decayed bodies, so as not to cause illusion.
9. When the sensitivity of the galvanometer is too high, the voltage probe of the potential probe can be inserted into the soil slightly. When the sensitivity of the galvanometer is not enough, it can be humidified along with the probe water injection.
10, at any time to check the accuracy of the ground resistance tester
Long Fiberglass Measuring Tape
Long Fiberglass Measuring Tape
Just pull the tape to lock the size in place.
Perfect for daily use, travel, camping, etc.
The telescopic tape can reliably and automatically lock and return the button without twisting to extend the distance, and it can be immediately drawn into a small shell.
It is suitable for kitchens, garages, manufacturing factories, steel factories, hardware stores, etc. it can be used to measure the length and width of measuring tools or casting aircraft, machines, furniture, etc., and it can be used to measure the accurate large tape.
Shell made of ABS material, black rubber, can protect it from falling damage, durable, buckle and sling design, easy to carry, handheld and portable.
The tape is made of sharp stainless steel and should be used safely.
Note: due to the difference between different monitors, the picture may not show the actual color of the product. thank you!
Please feel free to contact us if any further information.
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Shangqiu Yuan Xiang Measure Tools Co., Ltd. , https://www.yuanxiangtool.com