GOSSEN METRALINE Earth (M590R) Earth and Low Resistance Tester

Measure earth resistance from 0.01 Ω to 20 kΩ with the GOSSEN METRALINE Earth (M590R), a professional earth and low resistance tester. It supports 2-, 3-, and 4-pole earth resistance measurement, selective earth resistance with clamp, loop resistance, low resistance, and voltage up to 300 V AC/DC.

Overview

The METRALINE Earth (M590R) is engineered for reliable earth resistance testing in electrical installations. It employs the current-voltage method for earth resistance and the 4-wire Kelvin method for low resistance, ensuring accurate readings across a wide range. The large backlit LCD provides clear visibility in various lighting conditions.

What stands out

• Wide measurement range: earth resistance from 0.01 Ω to 20 kΩ, low resistance up to 200 kΩ
• Multiple test modes: 2-, 3-, and 4-pole earth resistance, selective with clamp, loop resistance
• High safety rating: CAT IV 300V / CAT III 600V
• Durable design: IP65 ingress protection, suitable for field use
• Long battery life: over 1000 measurements per charge

Technical details

• Earth resistance range: 0.01 Ω – 20 kΩ
• Low resistance range: 0.01 Ω – 200 kΩ
• Loop resistance range: 0.01 Ω – 20 kΩ
• Voltage measurement: 0 – 300 V AC/DC
• Test current: max 20 mA (earth), max 250 mA (low resistance)
• Test frequency: 128 Hz
• Safety rating: CAT IV 300V / CAT III 600V
• Ingress protection: IP65
• Display: large LCD with backlight
• Power supply: rechargeable NiMH battery pack (6x AA)
• Operating temperature: -10 °C to +50 °C

Our verdict

A robust and accurate earth tester for professional electricians, offering comprehensive measurement functions and high safety ratings in a portable package.