Extech 382252 Earth Ground Resistance Tester Kit User Manual

1. Ifihan

The Extech 382252 is a comprehensive Earth Ground Resistance Tester Kit designed for accurate measurement of earth ground resistance. This kit provides three selectable ranges for earth ground resistance: 20 Ohms (Ω), 200 Ohms (Ω), and 2000 Ohms (Ω). Beyond earth ground testing, the device also functions as a multimeter, capable of measuring AC/DC Voltage, Resistance, and Continuity. It features automatic zero adjustment for ease of use. This manual provides detailed instructions for the safe and effective operation, maintenance, and troubleshooting of your Extech 382252.

2. Alaye Aabo

Ikilọ: Improper use of this meter can cause damage, shock, injury, or death. Read and understand all safety information and operating instructions before using this instrument. Always adhere to local and national safety codes.

• Maṣe kọja awọn ifilelẹ titẹ sii ti o pọju fun iṣẹ eyikeyi.
• Ṣọ́ra gidigidi nígbà tí o bá ń ṣiṣẹ́ pẹ̀lú àwọn ẹ̀rọ iná mànàmáná aláàyè.
• Ensure the meter is in good working condition and free from damage before use.
• Nigbagbogbo lo iṣẹ to pe ati sakani fun awọn wiwọn.
• Rọpo awọn batiri nigbati ifihan batiri kekere ba han lati rii daju pe o peye awọn kika.
• Keep hands and fingers away from test probe tips when making measurements.
• Do not operate the meter in explosive atmospheres or in the presence of flammable gases or dust.

3. Package Awọn akoonu

Daju pe gbogbo awọn nkan wa ati pe ko bajẹ lori ṣiṣi silẹ:

• Extech 382252 Earth Ground Resistance Tester
• Test Leads (set)
• Auxiliary Earth Bars (2 pieces)
• Ọran gbigbe
• Protective Rubber Holster
• Awọn batiri 1.5V AA (awọn ege 6)

Image 1: The Extech 382252 Earth Ground Resistance Tester Kit, showing the main unit, test leads, two auxiliary earth bars, and the carrying case.

4. Awọn ẹya Ọja

The Extech 382252 offers the following key features:

• Earth Ground Resistance measurement in three ranges: 20Ω, 200Ω, and 2000Ω.
• AC/DC Voltage measurement capabilities.
• Resistance and Continuity testing functions.
• Automatic zero adjustment for accurate readings.
• Ifihan LCD nla, rọrun lati ka.
• Iṣẹ́ Dídá Dátà láti dì àwọn ìkà tí a fi hàn.
• Ìmọ́lẹ̀ ẹ̀yìn fún ìríran ní àwọn ipò ìmọ́lẹ̀ tí kò tó nǹkan.
• Durable protective rubber holster.

Aworan 2: Iwaju view of the Extech 382252 Earth Ground Resistance Tester, highlighting its display, function dial, and control buttons.

5. Eto

5.1 Fifi sori batiri

1. Rii daju pe mita naa ti wa ni pipa.
2. Wa ideri ibi ipamọ batiri naa ni ẹhin mita naa.
3. Use a screwdriver to remove the screw(s) securing the cover.
4. Insert six (6) 1.5V AA batteries, observing correct polarity (+/-).
5. Rọpo ideri ibi ipamọ batiri naa ki o si fi skru(s) so o mọ.

5.2 Nsopọ Awọn itọsọna Igbeyewo

Connect the test leads to the appropriate input jacks on the meter for the desired measurement function. For earth ground resistance testing, specific connections involving the auxiliary earth bars will be detailed in the operating instructions.

6. Awọn ilana Iṣiṣẹ

6.1 Agbara Tan / Pa

Rotate the function dial from the 'OFF' position to any desired measurement function to power on the meter. To power off, rotate the dial back to the 'OFF' position.

6.2 Automatic Zero Adjustment

The meter features automatic zero adjustment. When selecting a resistance range, the meter will automatically adjust to zero, compensating for lead resistance. Ensure test leads are not shorted or open during this process for accurate zeroing.

6.3 Data idaduro Išė

Press the 'HOLD' button to freeze the current reading on the display. Press it again to release the hold and resume live readings.

6.4 Backlight Išė

Press the backlight button (often indicated by a light bulb icon) to illuminate the display for better visibility in dark environments. Press it again to turn off the backlight.

7. Earth Ground Resistance Measurement

The Extech 382252 uses the 3-wire (or Fall-of-Potential) method for earth ground resistance measurements. This method requires the use of the two auxiliary earth bars provided.

7.1 Measurement Procedure (3-Wire Method)

1. Igbaradi: Ensure the circuit under test is de-energized and safely isolated.
2. Placement of Auxiliary Earth Bars:
   • Drive the first auxiliary earth bar (P) into the ground at a suitable distance from the earth electrode (E) being tested.
   • Drive the second auxiliary earth bar (C) into the ground at a further distance from P, ensuring all three points (E, P, C) are in a straight line. Typical distances are 5-10 meters (15-30 feet) between E and P, and P and C, but may vary based on soil conditions and electrode size.
3. Asopọmọra Awọn itọsọna Idanwo:
   • Connect the 'E' terminal of the meter to the earth electrode under test.
   • Connect the 'P' terminal of the meter to the first auxiliary earth bar (P).
   • Connect the 'C' terminal of the meter to the second auxiliary earth bar (C).
4. Yan Ibiti: Rotate the function dial to the desired Earth Ground Resistance range (20Ω, 200Ω, or 2000Ω). Start with the highest range if the resistance value is unknown.
5. Ṣe Idanwo: Press the 'TEST' button. The meter will inject a current and measure the voltage drop to calculate the earth ground resistance.
6. Ka Iwọn: The resistance value will be displayed on the LCD.
7. Jẹrisi Ipeye: For critical measurements, it is recommended to repeat the test with the auxiliary earth bars placed at slightly different distances to ensure the reading is stable and accurate.

8. Other Measurements

8.1 AC / DC Voltage Idiwon

1. Connect the red test lead to the 'V' input jack and the black test lead to the 'COM' input jack.
2. Rotate the function dial to the desired ACV (750V AC) or DCV (1000V DC) range.
3. So àwọn ìwádìí ìdánwò pọ̀ mọ́ ara wọn ní gbogbo àyíká tàbí èròjà tí a fẹ́ wọ̀n.
4. Ka voltage iye lori ifihan.

8.2 Resistance Wiwọn

1. Rí i dájú pé agbára ìṣiṣẹ́ tàbí ohun èlò náà kò pọ̀.
2. Connect the red test lead to the 'V' input jack and the black test lead to the 'COM' input jack.
3. Rotate the function dial to the desired Resistance range (e.g., 200Ω, 20kΩ, 200kΩ).
4. So awọn iwadii idanwo kọja paati naa.
5. Ka iye resistance lori ifihan.

8.3 Igbeyewo Ilọsiwaju

1. Rí i dájú pé agbára ìṣiṣẹ́ tàbí ohun èlò náà kò pọ̀.
2. Connect the red test lead to the 'V' input jack and the black test lead to the 'COM' input jack.
3. Rotate the function dial to the Continuity position (often indicated by a speaker icon).
4. Connect the test probes across the component or wire.
5. Ohun ariwo ti a gbọ n tọkasi itesiwaju (idaduro kekere). Ifihan naa yoo ṣe afihan iye resistance.

9. Itọju

9.1 Ninu

Wipe the meter with a dry, soft cloth. Do not use abrasives or solvents. Periodically clean the test leads and probes to ensure good electrical contact.

9.2 Batiri Rirọpo

When the low battery indicator appears on the display, replace the batteries promptly to maintain measurement accuracy. Refer to Section 5.1 for battery installation instructions.

9.3 Ibi ipamọ

If the meter is to be stored for an extended period, remove the batteries to prevent leakage and damage. Store the meter in its carrying case in a cool, dry environment, away from direct sunlight and extreme temperatures.

10. Laasigbotitusita

• No Display/Meter Not Powering On: Check battery installation and ensure batteries are fresh. Verify the function dial is not in the 'OFF' position.
• Awọn kika ti ko pe: Ensure test leads are properly connected and not damaged. Check battery level. For earth ground resistance, verify proper placement and connection of auxiliary earth bars and ensure good contact with the ground.
• Ko si Beep Tesiwaju: Check if the circuit is truly continuous. Ensure test leads are making good contact.
• Display Shows 'OL' (Overload): The measured value exceeds the selected range. Switch to a higher range.

If issues persist after following these steps, contact customer support.

11. Awọn pato

12. Atilẹyin ọja

The Extech 382252 Earth Ground Resistance Tester Kit typically comes with a 1-odun lopin atilẹyin ọja from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage resulting from misuse, accident, unauthorized repair, or modification. Please retain your proof of purchase for warranty claims.

13. Atilẹyin

For technical assistance, calibration services, or further information regarding your Extech 382252, please refer to the official Extech website or contact their customer support department. Contact details can usually be found on the manufacturer's webaaye tabi ninu iwe ti o wa pẹlu ọja rẹ.