How to use the inductive digital display pen
1. Button description:
A key "DIRECT": It is a direct measurement key (far away from the LCD screen), that is, when the metal front end of the electric pen (referred to as the batch head) is in direct contact with the line, please press this button;
B key "INDUCTANCE": It is the induction/breakpoint measurement key (closer to the LCD screen), that is, when using the batch head induction (note that it is induction, not direct contact), please press this button.
No matter how the text on the pen is printed, generally speaking, the one farther from the LCD screen is the direct measurement key, and the one closer to the LCD screen is the sensing/breakpoint measurement key. If it is not arranged like this, it means that it is a copycat or inferior product. For your safety, it is not recommended to buy it.
2. Direct detection:
1. Touch the DIRECT button, the metal tip of the test pen directly touches the detected object:
1.1 The last figure is the measured voltage value (this test pen is divided into 12V, 36V, 55V, 110V, 220V five voltage values, usually ≤36V is not life-threatening);
1.2 When the display value of the high segment is less than 70%, the low segment value is displayed;
1.3. When measuring non-ground direct current, touch the other pole (such as positive or negative).
2. When the electric pen directly touches the live wire, the indicator light will light up immediately whether or not the hand touches any measurement key:
2.1 When the hand does not touch any of the measurement keys, the indicator light is on and 12V is displayed, and this value is not accurate;
2.2 When the hand touches the sensor/breakpoint measurement key, the indicator light is on and 110V is displayed, which is inaccurate;
2.3 When the hand touches the direct measurement key, the indicator lights up and displays 220V, which is accurate;
2.4 To sum up, if the hand does not touch any of the measurement keys, once the indicator light is on, it means that there is an AC live wire of 220V, remember to remember!
3. When the hand touches the direct measurement button, and the electric pen directly touches the human body, live wire, neutral wire, ground wire, metal and other conductive objects, the indicator light may light up. At this time, the actual voltage is subject to the reading. Indicates no voltage.
4. When the hand touches the sensor/breakpoint measurement key, and the electric pen directly touches the detected object, there are two situations:
4.1 When the indicator lights up and displays 110V, it means that there is an AC live wire of 220V, remember!
4.2 The indicator light is off, but the "high voltage symbol" appears, please refer to points 1 and 2 in "3. Indirect detection".
3. Indirect detection (also known as induction detection):
1. Induction detection: Touch the INDUCTANCE button, and the metal front end of the test pen is close to the object to be detected (pay attention to approaching, not directly touching) the object to be detected. alternating current.
2. Breakpoint detection: When measuring a wire with a breakpoint, touch the INDUCTANCE button, and the metal front end of the test pen is close to (note that it is close to, not directly touching) the wire, or directly touch the insulation of the wire. layer, if the "high voltage symbol" disappears, this is the breakpoint.
3. Use this function to easily distinguish between zero and phase lines (when measuring parallel lines, increase the distance between lines). Detect microwave radiation and leakage.
Fourth, matters needing attention:
1. The keys do not need to be pressed hard.
2. Do not touch the two measurement keys at the same time during the test, otherwise the sensitivity and test results will be affected.
