Instrument for measuring surface resistance of objects
The surface resistance tester is a test objectSurface resistance valueIt is a kind of instrument used in microelectronics, medicine, aerospace, precision machinery and other fields.Surface resistance tester (English: ESD Resistance tester).
Chinese name
Surface resistance tester
Foreign name
ESD Resistance tester
Alias
Portable surface resistance tester
Features
High measurement accuracy, simple operation and convenient carrying
Working voltage 9V DC overall dimension 137mm * 76mm * 30mm workload 40 hoursaccuracy+/- 1/2 facade Weight 120g Operating temperature 0-50C °
Scope of application
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Surface resistance tester is widely used in microelectronics, medicine, aerospace, precision machinery and other fields.Note: It is used for quantitative measurement of all conductive, anti-static and electrostatic discharge materialsSurface resistanceorSystem resistance, easy to use and carry.Just place it on the surface of the tested object and press the red button. The indicator light on the instrument ranges from 103 to 1012 Ω, and one of the LED lights will light up according to the test value.Note: This tester cannot measure objects with surface resistance more than 1012 Ω.
instructions
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Just place it on the surface of the object to be tested and press the red button. The indicator light range on the instrument is 10 ^ 3~10 ^ 12Ω,One of the LEDs will illuminate according to the test value.This instrument can be used to measure the surface of various fabrics, carpets, films and other insulating materialsSpecific resistance（Surface resistivity）, the surface specific resistance can indirectly reflect the surface of the test materialElectrostatic leakageThe length of time reflects the electrostatic performance of the test material.
Because it is small and easy to carry, it can test some conventionalESDProducts, so ESD is usually carried with you.
Handband tester
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usage method
Electrostatic bracelet tester
1. Put 9V dry battery into the battery slot behind the tester.2. Setground wireBanana plugPlug into the grounding wire socket on the upper end of HAKKO-498 tester.3. SetWrist strapTighten your wrists.4. Connect the grounding wireWrist strapOn.5. Press the tester board by hand.At this time, the LCD indicator lights up and a sound can be heard.(1) If the red "LOW" light is on, check the resistance between the hand strap and the ground wire. If it is less than 800 kiloohms, it will affect human safety.(2) If the red "HIGH" light is on, it is necessary to check whether the wrist strap is tightened and check the wrist strapground wireResistance, ensure that the grounding wire of the tester is not loosened.(3) If the green "GOOD" light is on, it meansGrounding systemGood.
matters needing attention
1. Electrostatic hand strap andground wireConnection;2. Contact impedance between electrostatic hand strap and skin;3. Connection with anti-static grounding plate, mat and other grounding tools.4. After about 50000 operations, when the green "GOOD" light still lights up, but no sound is made, it means that the battery needs to be replaced.
application
1. Ensure the safety of every employee;2. Eliminate product damage caused by static electricity.3. The anti-static wrist strap tester can conveniently detect the performance of various types of anti-static bracelets. If the resistance value is not within the standard range or the power is too low, the automatic alarm will be given, and the red light will be on with the alarm;Low voltage display, automatic alarm in case of undervoltage;Small size, light weight, simple use, intuitive detection;
common problem
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1. What is the difference between portable surface resistance tester and bipolar surface resistance tester
The portable surface resistance tester is small and easy to carry, so it can test some conventionalESDProducts, so ESD is usually carried with you.The two-stage electric rent tester is used to test the point-to-point resistance of the object surface.The measurement is required to measure the resistance between two points independent of the grounding. The measurement results obtained by this measurement method are related to the processing of the measured object, the distance between the two probes and other factors. Therefore, the correct measurement procedures should be selected, and the test should be conducted under the same measurement conditions each time.
2. Measuring resistance with surface resistance tester
There are many models and brands of surface resistance testers. In order to measure the resistance value of the object surface more accurately, it is recommended that you choose a tester with a voltage selection key. This type of instrument will have better accuracy and higher accuracy.
Many domestic joint ventures and sole proprietorships useInternational Electrotechnical CommissionIn order to be close to international standards and adapt to international advanced standardsElectrostatic protectionTechnical requirements to improve the degree of conformity between our national standards and international standards,EquivalentHasIEC61340-5-1If the user has not specified the test voltage ininsulation resistance Safety requirements, we should carry out the above test procedures when conducting resistance test.
