Contact Us
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Tel: +8618822802390
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E-mail: admin@gvda-instrument.com
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WhatsApp: 8618822802390
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Add: Room 610-612, Huachuangda Business Building, District 46, Cuizhu Road, Xin'an Street, Bao'an, Shenzhen
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31
Oct
2022
Application of Telescopic Laser Rangefinder
Application of Telescopic Laser Rangefinder The application of handheld laser rangefinder in house measurement House measurement has always been a concern and troublesome work of t
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31
Oct
2022
Introduction to the relevant classification of laser rangefinder
Introduction to the relevant classification of laser rangefinder Laser rangefinders are divided into handheld laser rangefinders and telescope-type laser rangefinders. 1. Handheld
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31
Oct
2022
Factors to Consider When Buying a Telescope Rangefinder
Factors to Consider When Buying a Telescope Rangefinder 1. Measuring range 2. Measurement accuracy 3. The occasion of use It is basically divided into the following situations: a)
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30
Oct
2022
The principle and characteristics of high-precision telescope handheld laser ...
The principle and characteristics of high-precision telescope handheld laser rangefinder Laser rangefinders generally use two methods to measure distance: the pulse method and the
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30
Oct
2022
What are the common types of laser rangefinders?
What are the common types of laser rangefinders? 1. Handheld laser rangefinder The measurement distance is generally within 200 meters, and the accuracy is about 2mm. This is the m
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30
Oct
2022
Is the signal measured by the induction test pen a magnetic field or an elect...
Is the signal measured by the induction test pen a magnetic field or an electric field? Induction test pen, generally test alternating current. The alternating electric field and a
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30
Oct
2022
In addition to measuring electricity, do you know that the electric test pen ...
In addition to measuring electricity, do you know that the electric test pen has these functions? (1) First of all, the test pen can be used to conduct low-voltage nuclear phase, a
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30
Oct
2022
Nine functions of test pen application test
Nine functions of test pen application test Function 1: Identify live wire and neutral wire This is one of the most commonly used functions of a test pen. When measuring AC circuit
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30
Oct
2022
Neon Bubble Test Pen Lamp Lighting Principle
Neon Bubble Test Pen Lamp Lighting Principle Electric test pen (also known as electric pen) is one of the commonly used electricians, which is used to determine whether an object i
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30
Oct
2022
Skillfully Use Induction Test Pen to Test Network Cable's On-off
Skillfully Use Induction Test Pen to Test Network Cable's On-off There are two buttons on the front of the induction test pen, namely the "direct measurement" button and the "detec
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30
Oct
2022
How the electric pen works
How the electric pen works 1. Inert gas characteristics: ionization occurs when a certain voltage is applied, free charges are generated in the gas, and the free charges move direc
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30
Oct
2022
Why does the neutral line get charged, so that the neon tube of the electrosc...
Why does the neutral line get charged, so that the neon tube of the electroscope glows The fundamentals of neon tube lighting The neon tube lights due to voltage present in the cha
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30
Oct
2022
The principle and use of the electric test pen
The principle and use of the electric test pen The majority of electricians frequently utilize the electric test pen as one of their tools to check whether an object is charged or
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30
Oct
2022
How to operate a digital display pen
How to operate a digital display pen 1. Direct measuring technique The term "immediate measurement method" refers to a measuring technique where the test pen's camera directly cont
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30
Oct
2022
How to measure voltage
How to measure voltage A test pen used to determine whether a wire is live is a type of electrical and electronic instrument called a "digital display test pen." The body of the di
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30
Oct
2022
Smart use of low voltage test pen
Smart use of low voltage test pen An auxiliary safety tool that is frequently utilized is a low-voltage electroscope. It is used to check the liveness of electrical equipment's cas
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30
Oct
2022
Introduction to the design process of multi-purpose electroscope
Introduction to the design process of multi-purpose electroscope Design a multi-purpose electric pen, whose appearance is the same as that of ordinary electric test pen, it can not
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30
Oct
2022
How to use the test pen and matters needing attention
How to use the test pen and matters needing attention Master the two-grip test technique and a commonly used low-voltage test pen. The palm makes contact with the metal clip of a t
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30
Oct
2022
The reason why both the live wire and the neutral wire are bright when the te...
The reason why both the live wire and the neutral wire are bright when the test pen is on? It means that the line is live, that is to say, the line you are measuring is in use. For
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30
Oct
2022
What is the resistance of the electric pen in general?
What is the resistance of the electric pen in general? 1.5 megohms is normal. The resistance inside the test pen is usually around several megohms. When a test pen detects whether
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