Extech Instruments GRT350 User Manual Download | Manualshive

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User

Manual

Earth

Resistance

and

Resistivity

Tester

Model

GRT350

Additional

User

Manual

Translations

available

at

www.extech.com

www.

.com

[email protected]

1.800.561.8187

1
2
3
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»

Summary of Contents for GRT350

Page 1: ...User Manual Earth Resistance and Resistivity Tester Model GRT350 Additional User Manual Translations available at www extech com www com information itm com 1 800 561 8187 ...

Page 2: ...visit our website www extech com to check for the latest version of this User Guide Product Updates Product Registration and Customer Support Features Microprocessor controlled with advanced safety features Two line LCD display Auto Ranging Earth resistance testing with three ranges 0 20Ω 0 200Ω 0 2kΩ Earth voltage measuring range of 0 300Vac Automatic C current spike check Automatic P potential s...

Page 3: ...maximum Ambient temperature 0 40 C Observe the International Electrical Symbols listed below Double insulation This symbol adjacent to a terminal indicates that under normal use hazardous voltages may be present This symbol adjacent to another symbol or terminal indicates the user must refer to the manual for further information Earth ground terminal Equipment complies with current EU directives W...

Page 4: ...d connection 2 P1 terminal Green test lead connection 3 P2 terminal Yellow test lead connection 4 C2 terminal Red test lead connection 5 Display 6 Rc LED 7 Rp LED 8 Save button 9 Cursor buttons 10 Cursor buttons 11 ESC button 12 Power button 13 TEST STOP button www com information itm com 1 800 561 8187 ...

Page 5: ...th voltage will appear on the display if it is present 6 Press SAVE to save the measurement in Log memory 7 Press ESC to return to the Select Function display Measurement Considerations Two terminal testing of earth resistance is appropriate for most general purpose testing in normally conductive soil However two terminal measurements include test lead and contact resistance in the measurement and...

Page 6: ...he soil The distance between electrodes must be 5 to 10m 16 to 32 Four terminal earth resistance measurements 1 2 MAX AC 300V H S E ES P2 C2 C1 P1 3 1 Earth electrode rod under test 2 Potential spike 3 Current spike Three terminal earth resistance measurements 1 2 MAX AC 300V H S E ES P2 C2 C1 P1 3 1 Earth electrode rod under test 2 Potential spike 3 Current spike Two terminal earth resistance mea...

Page 7: ...arth resistance is greater than 2000Ω Earth Resistivity Testing ρ Wenner 4 point method Insert the four electrodes at equal distances and in a straight line at an interval of 1 to 30m 3 3 to 32 3 apart The depth should be 5 or less the distance between the electrodes For example if the distance between the electrodes is 5m 16 the electrodes should be inserted to a depth of 25cm 10 500cm x 5 25cm N...

Page 8: ...l display on the screen 4 Press the or arrow button to scroll through the saved data 5 Press ESC to get back to the Select Function display LOG Clear 1 Press the ON OFF button and wait for the Select Function screen to appear 2 Press the button and select LOG Clear 3 Press the TEST STOP button Are you sure will display on the screen 4 Press the TEST STOP button to clear the log data Successful wil...

Page 9: ... correct polarity 3 Reinstall battery holder and battery cover Never dispose of used batteries or rechargeable batteries in household waste As consumers users are legally required to take used batteries to appropriate collection sites the retail store where the batteries were purchased or wherever batteries are sold Disposal Do not dispose of this instrument in household waste The user is obligate...

Page 10: ...ead 5 m 16 ft Black lead 10m 32 ft Yellow lead 10m 32ft Red lead 15m 49ft Temperature Humidity Operating 0 to 50 C 32 to 122 F 80 R H Storage 10 to 60 C 14 to 140 F 80 R H Altitude 2000m 6500 max Power Source 1 5V AA x 8 batteries Dimensions 250 L x 190 W x 110 D mm 9 84 x 7 5 x 4 33 Weight Approx 1430g batteries installed Fuse 500mA 500V 5 x 20mm fast blow ceramic type Safety Standards CAT IV 300...

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