Universal Needle Detective Handheld Metal Detector HD-25C User Manual

1. Introduction

The Universal Needle Detective Handheld Metal Detector HD-25C is designed for the precise detection of ferromagnetic metal impurities. This device is particularly effective for locating broken needles and other small metal objects within various materials, ensuring product safety and quality. Its compact and portable design makes it suitable for a wide range of applications.

2. Safety Information

• Keep the device away from strong magnetic fields to prevent interference.
• Do not expose the detector to extreme temperatures or moisture.
• Ensure batteries are inserted correctly according to polarity markings.
• Replace batteries promptly when the low battery indicator activates to maintain optimal performance.
• This device is not waterproof. Avoid contact with liquids.

3. Product Overview

The HD-25C is a lightweight, handheld detector featuring an ergonomic design for comfortable use. It includes an indicator light and an audible alarm to signal the presence of metal. A wrist strap is provided for secure handling.

Image 1: The Universal Needle Detective Handheld Metal Detector HD-25C, showing its orange casing and wrist strap.

Image 2: The detector shown alongside a test card and a 9V battery, illustrating included accessories and power source.

4. Specifications

5. Setup

5.1 Battery Installation

1. Locate the battery compartment cover on the back of the device.
2. Slide the cover open in the direction indicated by the arrow (often labeled "OPEN").
3. Insert a new 9V battery, ensuring the positive (+) and negative (-) terminals align correctly with the markings inside the compartment.
4. Close the battery compartment cover securely.

5.2 Initial Test

Before use, it is recommended to perform a quick test with the provided test card or a known small metal object.

1. Turn the device ON using the power switch.
2. Pass the test card (or a small metal object like a needle) slowly over the detection area of the device.
3. The device should emit an audible alarm and the indicator light should illuminate, confirming proper function.

6. Operating Instructions

6.1 Powering On/Off

• To turn ON the detector, slide the power switch to the 'ON' position.
• To turn OFF the detector, slide the power switch to the 'OFF' position.

6.2 Detection Procedure

1. Hold the detector firmly by the handle.
2. Slowly move the detection head of the device over the item or area you wish to inspect. Maintain a consistent, close distance to the surface.
3. When a ferromagnetic metal object is detected, the device will emit an audible alarm and the indicator light will illuminate. The alarm sound may intensify as the detector gets closer to the metal.
4. Pinpoint the exact location by moving the detector in a cross-hatch pattern over the detected area until the strongest signal is found.

Image 3: The detector positioned near an embroidered fabric, demonstrating its application in textile inspection.

6.3 Applications

• Textile and Apparel: Detect broken needles in knitting, clothing, socks, quilts, leather, and shoe materials.
• Food and Chemical: Inspect for metal impurities in medicines, food products, and chemical materials.
• Construction and Woodworking: Locate nails, steel bars, and pipes within wood, walls, and tables.
• Safety: Check for harmful iron filings in work injuries or cuts.

7. Maintenance

• Cleaning: Wipe the exterior of the detector with a soft, dry cloth. Do not use abrasive cleaners or solvents.
• Battery Replacement: When the device emits a continuous squeaking sound, the battery power is low. Replace the 9V battery as described in Section 5.1. Remove batteries if the device will not be used for an extended period.
• Storage: Store the detector in a cool, dry place, away from direct sunlight and extreme temperatures.

8. Troubleshooting

• No Power: Ensure the battery is correctly installed and fully charged. Check the power switch is in the 'ON' position.
• No Alarm/Indicator Light: Verify the device is powered on and the battery is not depleted. Test with a known metal object. If issues persist, the device may require service.
• Continuous Squeaking Sound: This indicates a low battery. Replace the 9V battery immediately.
• False Alarms/Inconsistent Detection: Ensure there are no other metal objects or strong electromagnetic fields nearby that could interfere with the detector's operation.

9. Warranty and Support

For warranty information or technical support, please contact Universal customer service. Refer to your purchase documentation for specific warranty terms and contact details.

You may also visit the official Universal store on Amazon for additional product information and support resources: Universal Store