Gossen Metrawatt METRAOHM 413 Low Resistance Ohmmeter 200 Ω Max, 10 mΩ Resolution M630A

The Gossen Metrawatt M630A METRAOHM 413 low resistance ohmmeter is a precision measuring instrument designed for the accurate measurement of low-value resistances up to 200 Ω. Powered by batteries, it is compact and durable, suitable for rugged field use as well as laboratory environments.

This device is ideal for testing large protective conductor systems, earthing, equipotential bonding, and lightning protection installations. Its measurement principle involves determining resistance between a reference earth point and other designated points, with a measuring current of 200 mA in the 20 ohm range to ensure dependable results.

The ohmmeter features indications for interference voltage, measurement cable zero balancing, and offset balancing, which contribute to high measurement precision and user convenience. It automatically adjusts ranges from 0.01 ohm to 1999 kiloohms, providing flexibility for diverse testing requirements. Overvoltage protection safeguards the instrument from accidental connections to mains voltage.

Typical applications include testing fuses and cables, instrumentation systems, relay power contactors, load interrupters, transformers, coils, and small motors. The device complies with numerous rigorous standards such as IEC 61010-1, EN 61557-1/-4, IEC 60529 (IP65 rating), DIN 43751, and VDE certifications, confirming its quality and safety.

The instrument operates reliably in environmental conditions ranging from -10°C to 50°C, with dimensions measuring 230 mm width, 60 mm length, and 40 mm height. It weighs a lightweight 180 g, facilitating easy transport and handling during industrial, laboratory, construction, HVAC, manufacturing, and electrical system maintenance tasks.

This ohmmeter from Gossen Metrawatt offers vital precision and robustness for professionals engaged in electrical testing and maintenance, ensuring compliance with safety regulations and enhancing diagnostic confidence.

Compact and battery-powered for portable testing. Measures low-value resistances up to 200 ohms reliably. Automatic functions and interference voltage indication ensure accuracy. Suitable for testing protective earthing and bonding systems.

Includes offset and zero balancing for measurement precision. Robust design meets multiple international standards and approvals. Operating temperature range from -10°C to 50°C for versatile environments. Lightweight at 180 g with compact dimensions for ease of handling.

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