DYKB LED Digital Milliohm Meter – Precise Low Resistance Measurement for Laboratory and Industrial Applications

DYKB Digital Milliohm Meter Overview

This high-precision digital milliohm meter is designed for accurately measuring low resistance values across various laboratory and industrial applications, including transformer coil resistance, motor coil resistance, and switch contact resistance.

Key Features and Specifications

• Measurement range: 2Ω, 20Ω, and 200Ω
• Accuracy: ± (0.5% reading + 3 digits)
• Highest resolution: 1mΩ (2Ω range), 10mΩ (20Ω range), 0.1Ω (200Ω range)
• Measuring current: approximately 8mA
• Operating voltage: 3.4V to 4.4V (recommended for 3.7V lithium battery)
• Display: maximum display 1.999/19.99/199.9
• Operating environment: 15°C to 35°C
• Dimensions: 57.9mm x 42mm x 32mm; installation opening: 76mm x 39mm

Safety Precautions

To prevent damage to the device, avoid measuring resistance with voltage applied or introducing a voltage higher than 6V at the measurement input. When measuring large inductance transformer coils or motor coils, ensure energy discharge is performed to prevent damage.

Applications

• Measuring low-value current sampling resistors
• Motor coil resistance measurement
• Transformer coil resistance measurement
• MOSFET on-resistance measurement
• Switch contact resistance measurement
• USB data line resistance testing

Calibration Method

For optimal accuracy, calibrate the device using a high-precision resistor and adjust the 3296 multi-turn potentiometer accordingly to ensure reliable measurements.

Instructions for Use

Connect the wires as follows: power supply positive (red), power supply negative (black), I- (white), Vin- (yellow), I+ (green), Vin+ (blue). For four-wire measurement, use the provided Kelvin clips to ensure accurate and reliable results.