Pukapuka Kaiwhakamahi mō te Kete Whakamātautau Ātete Whenua Extech 382252

1. Kupu Whakataki

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. Nga korero haumaru

Whakatupato: 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.

• Kaua e neke ake i nga tepe whakaurunga morahi mo tetahi mahi.
• Kia tino tupato i te wā e mahi ana me ngā ara iahiko hiko ora.
• Ensure the meter is in good working condition and free from damage before use.
• Whakamahia tonu te mahi tika me te awhe tika mō ngā inenga.
• Whakakapia ngā pākahiko ina puta te tohu pākahiko iti hei whakarite kia tika ngā pānui.
• Keep hands and fingers away from test probe tips when making measurements.
• Kaua e whakahaerehia te mita i roto i ngā hau pahū, i te aroaro rānei o ngā hau mura, o te puehu rānei.

3. Ihirangi mokete

Me manatoko kei reira ngā taonga katoa, ā, kāore he pakaru i te wā e wetewete ana:

• Extech 382252 Earth Ground Resistance Tester
• Test Leads (set)
• Auxiliary Earth Bars (2 pieces)
• Te Kawe i te Keehi
• 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. Nga Hua o te Hua

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.
• Whakaaturanga LCD nui, ngawari ki te panui.
• Data Hold function to freeze displayed readings.
• Backlight for visibility in low-light conditions.
• Durable protective rubber holster.

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

5. Tatūnga

5.1 Tāuta Pūhiko

1. Me whakarite kua whakawetohia te hiko o te mita.
2. Kimihia te taupoki o te wāhanga pākahiko kei muri o te mita.
3. Use a screwdriver to remove the screw(s) securing the cover.
4. Insert six (6) 1.5V AA batteries, observing correct polarity (+/-).
5. Whakakapia te taupoki o te wāhanga pākahiko ka whakau ki te/ngā tīwiri.

5.2 Te hono i nga kaiarahi Whakamātautau

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. Nga Tohutohu Whakahaere

6.1 Hiko / Whakaweto

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 Taumahi Pupuri Raraunga

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 Mahi Whakamuri

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. Whakaritenga: 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. Te Hononga i ngā Arataki Whakamātautau:
   • 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. Tīpako Awhe: 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. Perform Test: Press the 'TEST' button. The meter will inject a current and measure the voltage drop to calculate the earth ground resistance.
6. Panui inenga: Ka whakaaturia te uara ātete ki te LCD.
7. Manatokohia te Tika: 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 Inenga

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. Honoa ngā probe whakamātautau puta noa i te ara iahiko, i te wāhanga rānei e inehia ana.
4. Pānuihia te voltage uara kei runga i te whakaaturanga.

8.2 Ine Atete

1. Me whakarite kua whakakorea te hiko o te ara iahiko, o te wāhanga rānei.
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. Honoa ngā pūwero whakamātautau puta noa i te wāhanga.
5. Panuihia te uara aukati kei runga i te whakaaturanga.

8.3 Whakamātautau Tonu

1. Me whakarite kua whakakorea te hiko o te ara iahiko, o te wāhanga rānei.
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. Honoa ngā pūrere whakamātautau ki te wae, ki te waea rānei.
5. Ka puta he pī e tohu ana i te haere tonu (he iti te ātete). Ka whakaatuhia te uara ātete e te mata.

9. Tiaki

9.1 Te horoi

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 Whakakapinga Pūhiko

Ina puta te tohu pākahiko iti ki te mata, whakakapia tonutia ngā pākahiko kia tika tonu ai te ine. Tirohia te Wāhanga 5.1 mō ngā tohutohu tāutanga pākahiko.

9.3 Rokiroki

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. Te Raru

• No Display/Meter Not Powering On: Check battery installation and ensure batteries are fresh. Verify the function dial is not in the 'OFF' position.
• Nga Panui Heke: 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.
• Karekau Pao Tonu: 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. Whakatakotoranga

12. Pūtāhui

The Extech 382252 Earth Ground Resistance Tester Kit typically comes with a 1-tau iti pūtāhui 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. Tautoko

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 webpae, i roto ranei i nga tuhinga kei roto i to hua.