Description
Specifications
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Type: Digital
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Model: DM-181HMI
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Display Type: Human Machine Interface (HMI)
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Resistance Range: 1 µΩ to 19.999 kΩ (7 selectable ranges)
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Accuracy: ±0.2% overall
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Test Current: 2A at 19.999 mΩ, approx. 0.1A at higher ranges
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Resolution: 7 decimal places; 4½-digit measurement above 1 mΩ
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Power Source: Mains operated
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Connection Method: 4-terminal Kelvin arrangement
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Displayed Parameters: RT, Temperature, Correction Factor, R20
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Conductivity Measurement: Automatic resistivity & conductivity calculation for copper/aluminium
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Data Storage: 20-day internal memory
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Data Transfer: USB pendrive export
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Special Features: SET ZERO knob, stable readings, touch data entry
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Suitable Wire Diameter: 0.1 mm to 15 mm
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Optional Accessory: Wooden clamp attachment (Model CA-391) for 1-meter wire testing
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Availability: In Stock
Product Description
The Digital Micro-Ohm Meter DM-181HMI is a highly advanced low-resistance testing instrument engineered for precision, convenience, and modern data handling. Designed for applications requiring extremely accurate micro-ohm measurement, it offers a wide range from 1 micro-ohm to 19.999 kΩ with 7-decimal resolution and exceptionally stable readings.
Featuring a modern HMI touchscreen display, the DM-181HMI allows easy operation and clear visualization of essential parameters such as RT, temperature, correction factor, and R20. Users can enter wire diameter directly on the screen to instantly calculate resistivity and conductivity for both copper and aluminium using the electrical method.
The instrument delivers 2A test current at lower ranges for reliable micro-ohm measurement, while higher ranges operate with reduced current for consistent accuracy. Its 4-terminal Kelvin arrangement and SET ZERO control eliminate lead and contact resistance, ensuring precise and repeatable results.
Data management is effortless with 20-day onboard memory and simple USB pendrive transfer for saving or printing test records. The DM-181HMI is ideal for measuring the resistance of copper and aluminium wires with diameters ranging from 0.1 mm to 15 mm. For users who need to measure 1-meter wire samples, the optional CA-391 wooden clamp attachment provides secure and accurate positioning.
With its combination of touchscreen control, high accuracy, conductivity analysis, and robust data features, the DM-181HMI stands out as a complete solution for laboratory testing, production environments, and quality assurance applications.

