Surface Resistance Tester
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Introduction：
It is simply operated. The user just need place tester on the surface of tested items, and directly read the figure indicated via LED lights. The testing method follows the ASTM D-257.
Specification:
Size | 137(L)*76(W)*30(D)mm |
Weight | 120g |
Accuracy | ±1/2 decade |
Repeatability | ±5% |
Testing Voltage | 9V |
Working Temperature | 0℃-50℃ |
Working RH | 0%-90% |
- Q: How can a multimeter measure the quality of a transformer on a circuit board?
- There is no short circuit between the primary coil and the secondary coil and no leakage. Using a multimeter to high resistance, two probes are respectively connected with the primary coil and the secondary coil of each one should be more than the number of threads, indicating megohm, infinite.
- Q: How to detect static grounding?
- Electrostatic grounding cable and equipment housings, table lamp rack work hob, good insulation, prevent short circuit, or even a broken connection.
- Q: What is the qualified value of the grounding resistance in the measurement of ground resistance?
- Below 1000V below the neutral point, the grounding resistance of the system is less than or equal to 4 ohm, and the repeated earth resistance is less than or equal to 10 ohm.2, the voltage below 1000V neutral ungrounded system, the general provisions of the grounding resistance of 4 euro.Therefore, according to the actual installation experience, the ground resistance of the street lighting system should be less than or equal to 4 euro.Single point grounding is usually used to test the grounding resistance of the instrument in the following style:
- Q: To measure the insulation resistance and interphase insulation resistance of an electric motor, a multimeter is often used instead of a multimeter
- It should be used correctly because the battery voltage of the multimeter is only a few volts, which is not enough to judge, and the voltage of the ohmmeter is 500~1000 volts, so the use of the ohmmeter.
- Q: Operation procedure of transformer insulation resistance test?
- Before measuring the insulation resistance, the power supply of the equipment under test shall be cut off and short circuit discharge shall be carried out. The purpose of discharging is to ensure the safety of the personal and the equipment and to make the measurement result accurate;
- Q: When using insulation resistance tester to measure insulation resistance, what factors will lead to inaccurate measurement data? Why?
- The test line connection method is incorrect. The three ends of "L", "G" and "E" are wrongly connected, or "G", "L", "G" and "E" are connected to both ends of the tested product
- Q: Why measure the insulation resistance of 10KV cable? Why use 5000V meter?
- Strictly speaking, measurement of 10KV cable for 5000V tramegger is not to judge whether this cable to meet the requirements of the use of 5000V, just use the shaking table test of the existence of cable insulation weak points, the real decision whether to cable insulation resistance meter measurement with professional pressure requirements, and meet the requirements to allow the use of charged numerical.
- Q: How to test DC resistance
- Measuring preparation: the first power line and the ground wire is connected to reliable DC resistance instrument, then the test line attached to the input and output terminals connected to the DC resistance instrument panel and its corresponding color, will test at the end of the line clamp to transformer winding ends to be measured, and the friction force on contact point ensure good contact. Wiring method is shown below
- Q: How can the resistivity meter survey be solved?
- If there is no other normal probe or instrument host, it is impossible to determine where the problem is, so it has to be sent back to the manufacturer for maintenance (also sent to a qualified metering and testing institution for maintenance and verification).
- Q: How to measure the resistance value accurately with digital multimeter?
- Digital multimeter than analog multimeter is more convenient, and it is more accurate than the Analog Multimeter, such as fluke multimeter, measurement accuracy of general models can reach the 0.2 level, while the Analog Multimeter only the highest level 0.5, is generally 1.5, the two are not in a sort of. In addition, some fridrik multimeter resistance gear can adjust zero, namely, the multimeter cast in the resistance block, two rod short circuit, a small button click the multimeter behind the measuring resistance is well adjusted.
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Surface Resistance Tester
- Ref Price:
-
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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