background image

GRT350

en

GB_v1.3

   

12/16

 

3

Safety

 

Information

 

 

Read

 

the

 

all

 

safety

 

information

 

carefully

 

before

 

attempting

 

to

 

operate

 

the

 

meter.

 

 

Use

 

the

 

meter

 

only

 

as

 

specified

 

in

 

this

 

manual.

 

Otherwise,

 

the

 

protection

 

provided

 

by

 

the

 

meter

 

may

 

be

 

impaired.

 

 

Rated

 

environmental

 

conditions:

 

Indoor

 

&

 

outdoor

 

use

 

Installation

 

Category

 

IV

 

300V

 

Pollution

 

Degree

 

2

 

Altitude

 

up

 

to

 

2000m

 

Relative

 

Humidity

 

80%

 

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

 

 

WARNING

 

To

 

avoid

 

electrical

 

shock,

 

do

 

not

 

touch

 

the

 

terminals

 

during

 

tests

  

Never

 

apply

 

Voltage

 

higher

 

than

 

300V

 

across

 

P1

 

and

 

P2

 

terminals

 

 

www.

.com

[email protected]

1.800.561.8187

Содержание GRT350

Страница 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 ...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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