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ERT-S Earth Resistance Tester

ERT-S Earth Resistance Tester
Earth 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.
  • Earth 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

Earth 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

 

 

Earth 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 Earth 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

 

110 x 65 x 290 mm

 

Display

31/2 digit LCD

 

Memory

500 memory locations

Communication

RS232 serial 4800 Baud

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