Digital Micro-ohm meter DM-121

Description

Specifications

• Measurement Range: 1 Micro Ohm to 2 Kilo Ohm

• Accuracy: ±0.2% of reading, ±0.05% of range

• Test Current: 2A at 19.99 mΩ and below ranges; approx. 0.1A at higher ranges

• Display: 3½ Digit Bright LED Display

• Temperature Feature: Inbuilt temperature sensor & resistance display at 20°C (R20)

• Standards Compliance: IS 5484:1997, IS 5082:1998, IS 2067:1975, IS 694:2010,IS 1554:1988, IS 14255:1995, IS 8130:2013, IS 613:2000, IS 10810 Part 5

• Power Source: Mains Operated

• Measurement Arrangement: 4-Terminal Kelvin Method

• Size: Compact built (8.5″ × 4″ × 6″) Can be easily carried in a small bag.

• Country of Origin: Made in India

• Standards Compliance: IS 398, IS 694, IS 1554, IS 7098, IS 14255, IS 17293, JSS 51034

Product Description

The Digital Micro-Ohm Meter DM-121 is a precision instrument designed for accurate measurement of extremely low resistance values in industrial and laboratory environments. With an extended range from 1 micro-ohm to 2 kilo-ohms, this meter ensures stable and reliable results with ±0.25% overall accuracy.

Equipped with inbuilt temperature sensing and automatic R20 calculation, the DM-121 eliminates the need for manual temperature correction charts, providing faster and more accurate testing. The 4-terminal Kelvin arrangement significantly reduces lead and contact resistance errors, ensuring consistent low-resistance readings.

Featuring a bright 3½ digit LED display, high test current up to 2A, and a compact bench-top design, this instrument is ideal for repetitive testing and quality control applications in cable manufacturing, switchgear testing, and electrical component evaluation. It is designed for cable resistance testing as per IS 398, IS 694, IS 1554, IS 7098, IS 14255, IS 17293 & JSS 51034.

Key Features

• Wide measurement range from 1 µΩ to 1.999 kΩ

• Dual display for RT (actual resistance) and R20 (temperature-corrected resistance)

• Inbuilt temperature measurement with automatic correction

• High accuracy of ±0.2% of reading, ±0.05% of range

• High test current up to 2 Amps for low-resistance ranges

• SET ZERO knob for precise calibration

• 4-terminal Kelvin measurement for error-free readings

• Slim, lightweight bench-top design

• Fast, stable readings suitable for continuous industrial testing

• Complies with multiple Indian Standards (IS) for reliability

Applications

Perfect for:

• Cable & conductor resistance testing

• Circuit breaker and switch contact measurement

• Electrical component evaluation

• Quality assurance in cable manufacturing

• Transformer, coil, and winding resistance testing

• Laboratory & industrial low-resistance measurement

Advantages

• No calculator or correction chart required

• Automatic R20 display improves accuracy

• Designed specifically for cable industry testing needs

• Ensures precise measurement of copper wire (0.1 mm to 10 mm)

• Fully compliant with IS standards for safety & performance

Keywords: Digital Micro-Ohm Meter, DM-121, Low Resistance Measurement, Copper Wire Testing, Micro Ohm Meter, Maxwell Testing Instruments, IS 5484:1997, IS 8130, IS 10810 Part 5, Cable Testing Equipment