ERT-S Ground Resistance Tester

Ground Resistance Tester

The Seaward ERT-S is the next generation microprocessor-controlled instrument designed for earth resistance measurements, in accordance with EN61557, the new European Standard. The choice for professionals.

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Key Features

Two or three point method earth resistance measurement.

Soil resistivity measurement.

Ground Resistance Utility method measurement, using a special clamp.

Unique internal memory storing up to 500 test results.

Ability to download to conventional PC for analysis and storing.

Supplied with all necessary leads

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Technical Specification

Ground Resistance -
2, 3 And 4 WIRE METHOD
Measuring Range	0 - 19.99W	Resolution 0.01W
	20.0 - 199.9W	Resolution 0.1W
	200 - 999W	Resolution 1W
	1.00Kohm - 9.99 KW	Resolution 10W
	10.0Kohm - 50.0W	Resolution 100W
Measuring
Frequency	125 Hz ± 1 Hz
Measuring
Current	<20mA effective
Measuring
voltage	< 50V effective sine wave
Distortion	max 5V pp/50 Hz
Accuracy	± 2% + 2 digits
Ground Resistance Utility -
Using Clamp Meter
Measuring Range	0.5 - 19.9W	Resolution 0.1W
	20 - 999W	Resolution 1W
	1.00KW - 2.00KW	Resolution 10W
Measuring
Frequency	125 Hz ± 1 Hz
Measuring
Current	<20mA effective
Measuring
Voltage	<50V effective sine wave
Distortion	max 5V pp/50 Hz
Accuracy	± 5% + 2 digits
Specific Ground Resistance
Measuring Range	0 - 19.99 MW,	Resolution 0.01MW
	20 - 199.9MW	Resolution 0.1MW
	200 - 999MW	Resolution 1MW
	1.0KW - 9.99KW	Resolution 10MW
	10.0K - 99.9KW	Resolution 100MW
	100K - 1999 KW	Resolution 1000MW
Accuracy	± 2%
General
Dimensions	4.3" x 2.5" x 11.4"
Display	3-1/2 digit LCD
Memory	500 memory locations
Communication	RS232 serial 4800 Baud

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