Manwal tal-Utent tal-Kit tat-Test tar-Reżistenza tal-Art Extech 382252

1. Introduzzjoni

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. Informazzjoni dwar is-Sigurtà

Twissija: 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.

• Teċċedix il-limiti massimi tad-dħul għal kwalunkwe funzjoni.
• Oqgħod attent ħafna meta taħdem ma' ċirkwiti elettriċi ħajjin.
• Ensure the meter is in good working condition and free from damage before use.
• Dejjem uża l-funzjoni u l-firxa korretti għall-kejl.
• Ibdel il-batteriji meta jidher l-indikatur ta' batterija baxxa biex tiżgura qari preċiż.
• Keep hands and fingers away from test probe tips when making measurements.
• Tħaddimx il-miter f'atmosferi splussivi jew fil-preżenza ta' gassijiet jew trab fjammabbli.

3. Kontenut tal-Pakkett

Ivverifika li l-oġġetti kollha huma preżenti u bla ħsara meta tiftaħ il-pakkett:

• Extech 382252 Earth Ground Resistance Tester
• Test Leads (set)
• Auxiliary Earth Bars (2 pieces)
• Kawża tal-Ġarr
• Protective Rubber Holster
• 1.5V AA Batteries (6 pieces)

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. Karatteristiċi tal-prodott

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.
• Display LCD kbir, faċli biex jinqara.
• Data Hold function to freeze displayed readings.
• Backlight for visibility in low-light conditions.
• Durable protective rubber holster.

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

5. Setup

5.1 Installazzjoni tal-batterija

1. Kun żgur li l-miter ikun mitfi.
2. Sib l-għatu tal-kompartiment tal-batterija fuq wara tal-miter.
3. Use a screwdriver to remove the screw(s) securing the cover.
4. Insert six (6) 1.5V AA batteries, observing correct polarity (+/-).
5. Erġa’ poġġi l-għatu tal-kompartiment tal-batterija u waħħalha bil-vit(i).

5.2 Konnessjoni tal-wajers tat-test

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. Istruzzjonijiet Operattivi

6.1 Power On/Off

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 Funzjoni ta' Żamma tad-Data

Agħfas il-buttuna 'HOLD' biex tiffriża l-qari attwali fuq id-displej. Agħfasha mill-ġdid biex teħles mill-hold u terġa' tibda l-qari dirett.

6.4 Funzjoni tad-Dawl ta' Wara

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. Preparazzjoni: 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. Konnessjoni tal-wajers tat-test:
   • 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. Agħżel Firxa: 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. Agħmel it-Test: Press the 'TEST' button. The meter will inject a current and measure the voltage drop to calculate the earth ground resistance.
6. Aqra l-Kejl: The resistance value will be displayed on the LCD.
7. Ivverifika l-Eżattezza: 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 Kejl

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. Qabbad il-probi tat-test madwar iċ-ċirkwit jew il-komponent li għandu jitkejjel.
4. Aqra l-voltagIl-valur fuq il-wiri.

8.2 Kejl tar-Reżistenza

1. Kun żgur li ċ-ċirkwit jew il-komponent ma jkollux l-enerġija.
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. Qabbad il-probi tat-test mal-komponent.
5. Aqra l-valur tar-reżistenza fuq il-wiri.

8.3 Test ta' Kontinwità

1. Kun żgur li ċ-ċirkwit jew il-komponent ma jkollux l-enerġija.
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. Ħoss li jinstema' jindika kontinwità (reżistenza baxxa). Id-displej se juri l-valur tar-reżistenza.

9. Manutenzjoni

9.1 Tindif

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 Sostituzzjoni tal-batterija

Meta l-indikatur ta' batterija baxxa jidher fuq id-displej, ibdel il-batteriji minnufih biex iżżomm l-eżattezza tal-kejl. Irreferi għat-Taqsima 5.1 għal struzzjonijiet dwar l-installazzjoni tal-batteriji.

9.3 Ħażna

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 Issolvi l-problemi

• No Display/Meter Not Powering On: Check battery installation and ensure batteries are fresh. Verify the function dial is not in the 'OFF' position.
• Qari mhux eżatt: 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.
• Ebda Ħoss ta' Kontinwità: Iċċekkja jekk iċ-ċirkwit huwiex tassew kontinwu. Kun żgur li l-wajers tat-test qed jagħmlu kuntatt tajjeb.
• Display Shows 'OL' (Overload): Il-valur imkejjel jaqbeż il-medda magħżula. Aqleb għal medda ogħla.

Jekk il-problemi jippersistu wara li ssegwi dawn il-passi, ikkuntattja l-appoġġ għall-klijenti.

11. Speċifikazzjonijiet

12. Garanzija

The Extech 382252 Earth Ground Resistance Tester Kit typically comes with a Garanzija limitata ta 'sena 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. Appoġġ

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 webis-sit jew fid-dokumentazzjoni inkluża mal-prodott tiegħek.