Extech EX820A 1000A True RMS AC Clamp IR થર્મોમીટર સાથે મીટર

1. પરિચય

The Extech EX820A is a professional 1000A True RMS AC Clamp Meter equipped with a built-in non-contact infrared thermometer. This device is designed for accurate electrical measurements and temperature monitoring in various applications, including electrical installations, motors, and other electrical devices. It features a large 6000 count backlit LCD display for clear readings and an ergonomically designed double-molded housing for comfortable, one-handed operation. The 43 mm (1.7 inch) jaw opening accommodates conductors up to 750 MCM or two 500 MCM cables. This meter is rated CAT IV-600 V for enhanced safety.

સલામતી માહિતી: Always adhere to local and national safety codes. Use appropriate personal protective equipment. Do not attempt to measure voltages or currents exceeding the meter's specified limits. Ensure the meter is in good working condition before use. Refer to the safety section in the full manual for detailed precautions.

Figure 1: Extech EX820A Clamp મીટર ઓવરview

2. ઉત્પાદન સુવિધાઓ

• સાચું RMS માપન: નોન-સાઇનુસોઇડલ વેવફોર્મ્સ માટે સચોટ રીડિંગ્સ પ્રદાન કરે છે.
• 1000A AC કરંટ માપન: High current capacity for demanding applications.
• Built-in IR Thermometer: Non-contact temperature measurement with laser pointer for identifying hot spots.
• LoZ (લો ઇમ્પીડેન્સ) મોડ: Prevents false readings caused by ghost voltages
• લો પાસ ફિલ્ટર (LPF): Ensures accurate measurements in electrically noisy environments.
• Inrush Current Measurement: Captures motor start-up current.
• CAT IV-600V Safety Rating: High safety standard for industrial environments.
• 6000 Count Backlit LCD Display: Large, easy-to-read display with illumination for dim lighting conditions.
• જડબાનું ઉદઘાટન: 43 mm (1.7 inches) for large conductors.
• Multimeter Functions: Includes AC/DC Voltage, Resistance, Capacitance, Frequency, Diode, and Continuity.

Figure 2: Display with LoZ and LPF Indicators

3. સેટઅપ

3.1 અનપેકિંગ અને નિરીક્ષણ

Carefully unpack the meter and its accessories. Verify that all items listed in the 'Included Components' section are present and undamaged. If any item is missing or damaged, contact your supplier immediately.

3.2 બેટરી ઇન્સ્ટોલેશન

The EX820A requires one (1) 9V battery (included). To install or replace the battery:

1. ખાતરી કરો કે મીટર બંધ છે.
2. મીટરના પાછળના ભાગમાં બેટરી કમ્પાર્ટમેન્ટ કવર શોધો.
3. બેટરી કવરને સુરક્ષિત કરતા સ્ક્રુને ઢીલો કરવા માટે સ્ક્રુડ્રાઈવરનો ઉપયોગ કરો.
4. Remove the cover and insert the 9V battery, observing correct polarity.
5. બેટરી કવર બદલો અને સ્ક્રુ સજ્જડ કરો.

૬.૨ કનેક્ટિંગ ટેસ્ટ લીડ્સ

વોલ્યુમ માટેtage, resistance, capacitance, frequency, diode, and continuity measurements, connect the supplied test leads:

• Insert the red test lead into the VΩHz+ input jack.
• COM ઇનપુટ જેકમાં બ્લેક ટેસ્ટ લીડ દાખલ કરો.

આકૃતિ 3: સમાવિષ્ટ ઘટકો

4. ઓપરેટિંગ સૂચનાઓ

The EX820A features a rotary function switch to select the desired measurement mode. Press the 'MODE' button to cycle through functions within a single switch position (e.g., AC/DC voltage, પ્રતિકાર/સાતત્ય).

4.1 Measuring AC Current (Clamp)

1. Set the rotary switch to the 'A~' position.
2. cl ખોલોamp jaws by pressing the jaw release trigger.
3. Enclose a single conductor with the clamp જડબાં. ખાતરી કરો કે જડબાં સંપૂર્ણપણે બંધ છે.
4. ડિસ્પ્લે પર AC કરંટ મૂલ્ય વાંચો.

Figure 4: Measuring AC Current with the Clamp

4.2 માપન એસી/ડીસી વોલ્યુમtage

1. વિભાગ 3.3 માં વર્ણવ્યા મુજબ ટેસ્ટ લીડ્સને જોડો.
2. Set the rotary switch to the 'V' position.
3. Press the 'MODE' button to select AC (V~) or DC (V–) voltage.
4. Apply the test probes to the circuit points where voltage માપવાનું છે.
5. ભાગ વાંચોtagડિસ્પ્લે પર e મૂલ્ય.

Figure 5: Measuring Voltage with Test Leads

4.3 Using the Infrared Thermometer

1. Set the rotary switch to the 'IR TEMP' position.
2. Point the meter's IR sensor (located at the top) towards the target surface. The laser pointer will assist in aiming.
3. Read the surface temperature on the display.

Figure 6: Using the Infrared Thermometer

4.4 LoZ (Low Impedance) Mode

The LoZ function is used to eliminate ghost voltages, which can cause misleading readings. When measuring voltage in circuits where ghost voltages are suspected, select the LoZ mode to provide a low impedance path that dissipates these stray voltages

1. Set the rotary switch to the 'V LoZ' position.
2. ટેસ્ટ લીડ્સને સર્કિટ તરફ જોડો.
3. ભાગ વાંચોtage. This reading will be more accurate in the presence of ghost voltages

૪ લો પાસ ફિલ્ટર (LPF)

The LPF function is designed for accurate measurements on variable frequency drives (VFDs) and other electrically noisy equipment. It filters out high-frequency noise that can distort True RMS readings.

1. Set the rotary switch to the 'A~' or 'V~' position.
2. Press the 'LPF' button to activate the Low Pass Filter. The LPF icon will appear on the display.
3. Proceed with your current or voltage માપન.

4.6 Inrush Current Measurement

The Inrush function captures the maximum current surge when a motor or other inductive load starts up. This is useful for diagnosing motor starting issues.

1. Set the rotary switch to the 'A~' position.
2. Press the 'INRUSH' button. The meter will be ready to capture the inrush current.
3. cl લાગુ કરોamp to the motor's power lead and start the motor. The meter will display the peak inrush current.

5. જાળવણી

5.1 સફાઈ

Wipe the meter with a dry, soft cloth. Do not use abrasives or solvents. Periodically clean the input jacks with a cotton swab and alcohol to ensure good contact.

5.2 બેટરી રિપ્લેસમેન્ટ

Replace the 9V battery when the low battery indicator appears on the display. Refer to Section 3.2 for battery installation instructions. Always dispose of used batteries responsibly.

5.3 સંગ્રહ

When the meter is not in use for an extended period, remove the battery to prevent leakage. Store the meter in a cool, dry place, away from direct sunlight and extreme temperatures.

6. મુશ્કેલીનિવારણ

• મીટર ચાલુ થતું નથી: Check battery installation and ensure the battery has sufficient charge. Replace if necessary.
• No reading or 'OL' (Overload) displayed: Ensure test leads are properly connected and making good contact. Verify the measurement range is appropriate for the input. For current measurements, ensure only a single conductor is within the clamp જડબાં.
• અચોક્કસ વાંચન: બેટરી વોલ્યુમ તપાસોtage. Ensure the correct function is selected. For voltage/current, consider using LoZ or LPF modes in noisy environments. Ensure proper contact with test points.
• IR Thermometer not working: Ensure the rotary switch is in the 'IR TEMP' position. Check for any obstructions to the IR sensor.

7. સ્પષ્ટીકરણો

8. વોરંટી અને સપોર્ટ

8.1 વોરંટી માહિતી

The Extech EX820A Clamp Meter comes with a 2 વર્ષની વોરંટી from the date of purchase. This warranty covers defects in materials and workmanship under normal use. It does not cover damage resulting from misuse, unauthorized modification, accident, or neglect. Please retain your proof of purchase for warranty claims.

8.2 ટેકનિકલ સપોર્ટ

For technical assistance, troubleshooting, or service inquiries, please refer to the official Extech website or contact Extech customer support. Contact information can typically be found in the full printed manual or on the manufacturer's webસાઇટ