Find HS Code and trade information for electric measuring pen

Electric Measuring Pen

An electric measuring pen, also known as a voltage tester or non-contact voltage detector (NCVD), is a handheld device used to detect the presence of live alternating current (AC) voltage without making direct physical contact with the electrical conductor.

Material:

• Housing: Typically constructed from durable plastic, often with a textured grip for safety and ease of handling.
• Sensor: Contains an internal capacitive sensor, often a metal tip or rod.
• Electronics: Includes a circuit board, battery, and indicator light (LED or LCD).
• Capacitor: A key component for sensing the electric field.

Purpose:

• Safety: Primary function is to identify whether a wire, outlet, or electrical device is energized, preventing electric shock.
• Troubleshooting: Used to quickly check for power in circuits, locate live wires, and identify breaks in circuits.
• Verification: Confirming power is off before working on electrical systems.

Function:

The pen operates on the principle of capacitive coupling. When the tip of the pen is brought near a live AC voltage source, the electric field induces a voltage in the pen’s internal capacitor. If the voltage exceeds a certain threshold, the pen activates an audible alarm and/or visual indicator (light). The device does not measure the magnitude of the voltage; it simply indicates presence or absence.

Usage Scenarios:

• Residential Wiring: Checking outlets, switches, and light fixtures.
• Commercial Electrical Systems: Identifying energized circuits in buildings.
• Automotive Electrical Systems: Detecting voltage in car wiring (some models are designed for DC voltage).
• HVAC Systems: Checking for power in air conditioning and heating units.
• Appliance Repair: Confirming power is disconnected before disassembly.

Common Types:

• Non-Contact Voltage Detectors (NCVD): Most common type. Detect voltage through the insulation of wires. Typically have a pen-like shape.
• Two-Pole Voltage Testers: Require physical contact with the conductors. Indicate voltage presence and polarity. Often used with screw-driver like tips.
• Digital Multimeters with Voltage Detection: Multimeters that include a non-contact voltage detection feature. Offer additional measurement capabilities.
• Loop Powered Testers: Draw power from the circuit being tested. Often used in industrial settings.
• Pen-style with LED indicators: Basic models with a simple LED to show voltage presence.
• Pen-style with LCD display: More advanced models that may show relative voltage levels or other information.

Important Considerations:

• Calibration: Regularly test the pen on a known live source to ensure proper operation.
• Limitations: NCVDs can be affected by electromagnetic interference and may not detect voltage through thick insulation or inside metal conduit.
• Safety Precautions: Always follow manufacturer’s instructions and wear appropriate personal protective equipment (PPE) when working with electricity. These pens are for detection only, not for measuring voltage accurately. Never assume a wire is safe simply because the pen doesn't detect voltage.

Electric measuring pens fall under instruments for measuring or checking electrical quantities. Here are relevant HS codes based on the provided information:

• 9030310000: This HS code covers Oscilloscopes, spectrum analyzers and other instruments and apparatus for measuring or checking electrical quantities, excluding meters of heading 9028; instruments and apparatus for measuring or detecting alpha, beta, gamma, X-ray, cosmic or other ionizing radiations; parts and accessories thereof: Other instruments and apparatus, for measuring or checking voltage, current, resistance or power (other than those for measuring or checking semiconductor wafers or devices): Multimeters, without a recording device. An electric measuring pen functioning as a multimeter without recording capabilities would fall under this code. The first two digits (90) indicate Chapter 90 – Instruments and apparatus which measure, check, analyse or control. The next two digits (30) represent Heading 9030 – Instruments and apparatus which measure or check electrical quantities. The final digits (310000) specify multimeters without a recording device. The current tax rate is 55.0% (0.0% base tariff + 25.0% additional tariff, increasing to 30.0% after April 2, 2025).

• 8543708000: This HS code covers Electrical machines and apparatus, having individual functions, not specified or included elsewhere in this chapter; parts thereof: Other machines and apparatus: Other: Microwave amplifiers. If the electric measuring pen incorporates microwave amplification technology for signal processing, it could be classified under this code. The first two digits (85) indicate Chapter 85 – Electrical machinery and equipment. The next two digits (43) represent Heading 8543 – Electrical machinery and equipment having individual functions, not specified or included elsewhere. The final digits (708000) specify other machines and apparatus, specifically microwave amplifiers. The current tax rate is 55.0% (0.0% base tariff + 25.0% additional tariff, increasing to 30.0% after April 2, 2025).

• 8543709860: This HS code covers Electrical machines and apparatus, having individual functions, not specified or included elsewhere in this chapter; parts thereof: Other machines and apparatus: Other: Other: Other. If the electric measuring pen doesn't fall into more specific categories within 8543, it may be classified as "other" electrical machinery. The first two digits (85) indicate Chapter 85 – Electrical machinery and equipment. The next two digits (43) represent Heading 8543 – Electrical machinery and equipment having individual functions, not specified or included elsewhere. The final digits (709860) specify other machines and apparatus, specifically other. The current tax rate is 57.6% (2.6% base tariff + 25.0% additional tariff, increasing to 30.0% after April 2, 2025).