ANENG SZ27 Digital Multimeter Instruction Manual

1. ആമുഖം

The ANENG SZ27 is a handheld pocket LCD digital multimeter designed for a wide range of electrical measurements. This versatile instrument can measure AC/DC voltage and current, resistance, capacitance, frequency, and perform diode and transistor (hFE) testing. It also features circuit continuity, Non-Contact Voltage (NCV) detection, and a low battery voltage display. Its compact design and comprehensive functions make it an ideal choice for on-site operations, laboratories, factories, radio enthusiasts, and home applications.

Figure 1: ANENG SZ27 Digital Multimeter Overview

2. സജ്ജീകരണം

2.1 പാക്കേജ് ഉള്ളടക്കം

Before using your ANENG SZ27 Multimeter, please ensure all components are present:

• 1 x ANENG SZ27 Multimeter
• 1 x Pair of Test Leads (Pen wire)
• 1 x സ്റ്റോറേജ് ബാഗ്
• 1 x ഉപയോക്തൃ മാനുവൽ
• 1 x പാക്കിംഗ് ബോക്സ്
• (Optional: 1 x 16-in-1 combination line, depending on your purchase choice)

Figure 2: Multimeter and Accessories

2.2 ബാറ്ററി ഇൻസ്റ്റാളേഷൻ

The ANENG SZ27 Multimeter requires a 9-volt (6F22) battery for operation. The battery is not included in the package. To install the battery:

1. മൾട്ടിമീറ്ററിൻ്റെ പിൻഭാഗത്ത് ബാറ്ററി കമ്പാർട്ട്മെൻ്റ് കണ്ടെത്തുക.
2. ബാറ്ററി കമ്പാർട്ട്മെന്റ് കവർ തുറക്കാൻ ഒരു സ്ക്രൂഡ്രൈവർ ഉപയോഗിക്കുക.
3. Connect the 9-volt battery to the battery clips, ensuring correct polarity.
4. Place the battery inside the compartment and secure the cover with the screw.

Figure 3: Battery Installation and Key Features

2.3 ടെസ്റ്റ് ലീഡ് കണക്ഷൻ

To prepare for measurements:

1. Remove the protective covers from the test leads.
2. Insert the black test lead into the 'COM' (common) port.
3. Insert the red test lead into the 'INPUT' port for voltage, resistance, capacitance, and frequency measurements. For current measurements (mA or 10A), use the corresponding 'mA' or '10A MAX' ports.

Figure 4: Multimeter Front Panel Layout

3. പ്രവർത്തന നിർദ്ദേശങ്ങൾ

The ANENG SZ27 features a manual range operating mode. Rotate the function turntable to select the desired measurement function.

3.1 എസി/ഡിസി വോളിയംtagഇ അളവ്

The multimeter can measure up to 1000V DC voltage and 750V AC voltage.

• Connect the test leads to the 'COM' and 'INPUT' ports.
• Rotate the function dial to the appropriate AC (V~) or DC (V-) voltagഇ ശ്രേണി.
• Touch the probes to the points where you want to measure voltage.

Figure 5: Electronic Maintenance Components Testing

3.2 എസി/ഡിസി കറന്റ് അളവ്

IMPORTANT: Current must be measured in series with the circuit. Incorrect connection can damage the multimeter.

• For DC current (0mA-10A) or AC current (0mA-10A), connect the test leads to the 'COM' and the appropriate current port ('mA' or '10A MAX').
• Rotate the function dial to the corresponding current range.
• Break the circuit and connect the multimeter in series to measure the current flowing through it.

Figure 6: Precautions for Current Measurement

3.3 പ്രതിരോധം അളക്കൽ

• Connect the test leads to the 'COM' and 'INPUT' ports.
• Rotate the function dial to the Ohm (Ω) range.
• Touch the probes to the component to measure its resistance.

3.4 ശേഷി അളക്കൽ

WARNING: It is necessary to discharge the capacitor before measuring it to prevent damage to the multimeter or injury.

• Connect the test leads to the 'COM' and 'INPUT' ports.
• Rotate the function dial to the Capacitance (nF-mF) range.
• Touch the probes to the discharged capacitor terminals.

3.5 ഫ്രീക്വൻസി (Hz) അളവ്

• Connect the test leads to the 'COM' and 'INPUT' ports.
• Rotate the function dial to the Hz frequency range.
• Apply the probes to the circuit to measure frequency.

3.6 ഡയോഡ് ടെസ്റ്റ്

• Connect the test leads to the 'COM' and 'INPUT' ports.
• Rotate the function dial to the Diode symbol.
• Place the red probe on the anode and the black probe on the cathode of the diode. The display will show the forward voltage drop. Reverse the probes; the display should show 'OL' (open loop) for a good diode.

3.7 hFE Triode Measurement

• Rotate the function dial to the hFE position.
• Insert the transistor leads (Emitter, Base, Collector) into the corresponding NPN or PNP sockets on the multimeter.
• The display will show the hFE value.

Figure 7: hFE Triode Measurement

3.8 എൻ‌സി‌വി (നോൺ-കോൺടാക്റ്റ് വോളിയംtagഇ) കണ്ടെത്തൽ

• Rotate the function dial to the NCV gear.
• Bring the top of the multimeter close to an AC voltagഇ ഉറവിടം.
• എപ്പോൾ എസി വോള്യംtage is sensed, the indicator light will flash red and a beep will be emitted to remind you of the presence of voltage.

Figure 8: Contactless NCV Voltagഇ കണ്ടെത്തൽ

3.9 Continuity Test (On-Off Beep)

• Rotate the function dial to the continuity symbol (often shared with diode).
• Touch the probes to the two points of the circuit or component you want to test.
• If there is continuity (low resistance), the multimeter will beep.

3.10 ഡാറ്റ ഹോൾഡ്

Press the 'HOLD/BL' button to retain the current reading on the screen for easy viewing. Press it again to release.

3.11 ബാക്ക്‌ലൈറ്റ്

Long press the 'HOLD/BL' button to turn on/off the LCD backlight, allowing clear viewing in dark environments.

4. പരിപാലനം

4.1 പൊതു പരിചരണം

• Keep the multimeter clean and dry. Wipe with a soft, damp ആവശ്യമെങ്കിൽ തുണി ഉപയോഗിക്കുക. അബ്രസീവ് ക്ലീനറുകളോ ലായകങ്ങളോ ഉപയോഗിക്കരുത്.
• The multimeter is equipped with a silicone sheath for anti-drop protection. Ensure it is properly fitted.
• Store the multimeter in its storage bag when not in use to protect it from dust and physical damage.

4.2 ബാറ്ററി മാറ്റിസ്ഥാപിക്കൽ

When the low power prompt (battery symbol) appears on the display, replace the 9V battery promptly to ensure accurate measurements.

4.3 ഓട്ടോമാറ്റിക് ഷട്ട്ഡൗൺ

The multimeter features an automatic shutdown function. If there is no operation for 15 minutes, it will automatically shut down to conserve battery life.

5. പ്രശ്‌നപരിഹാരം

5.1 Millivolt Value Jump (Non-Zero Phenomenon)

If the mV file of the multimeter shows a non-zero reading when no input is present, this is generally a normal phenomenon and can be caused by:

• Excessive changes in ambient temperature and humidity in the air.
• ശക്തമായ വൈദ്യുത മണ്ഡലം അല്ലെങ്കിൽ കാന്തിക മണ്ഡല ഇടപെടൽ.

To verify if the multimeter is functioning correctly, dial the mV file, insert the red and black test leads into the corresponding input hole, and short them together. The multimeter should display "0000". If it does, the non-zero return is due to environmental interference and does not affect the use of the multimeter. It is recommended to eliminate environmental interference factors to ensure measurement accuracy.

Figure 9: Millivolt Value Jump Explanation

5.2 Incorrect Current Measurement

WARNING: Do not directly connect the positive and negative poles of the power supply in current measurement mode. This will cause internal circuit damage and burn out the machine. Always measure current in series with the circuit.

WARNING: Do not directly connect the positive and negative poles of the power supply to the current hole when measuring voltage. This will also cause internal circuit damage and burn out the machine.

Figure 10: Current Measurement Instructions and Warnings

6 സ്പെസിഫിക്കേഷനുകൾ

Note: The parameters are for reference only, and the actual measurement of the specific equipment shall prevail. The 2000V gear requires insertion into the 2KV positive socket.

Figure 11: SZ27 Measuring Function and Range

6.1 ഉൽപ്പന്ന അളവുകൾ

• നീളം: 18.5 സെ.മീ (7.28 ഇഞ്ച്)
• വീതി: 8.4 സെ.മീ (3.3 ഇഞ്ച്)
• Thickness: 4.1 cm (1.61 inches)

ചിത്രം 12: ഉൽപ്പന്ന അളവുകൾ

7. വാറൻ്റിയും പിന്തുണയും

ANENG is committed to providing quality products and customer service. If you encounter any issues during the use of your ANENG SZ27 Multimeter, please contact ANENG customer service for assistance.

7.1 Common Support Inquiries

• ഗുണനിലവാര പ്രശ്നങ്ങൾ: In case of product quality problems not caused by human error, contact customer service for solutions.
• Product Not Operating Properly: If the product is not operating normally, provide a detailed video of the issue to ANENG customer service for expert diagnosis and solutions.
• Questions About Product Use: This product requires a certain degree of electrical knowledge. If you have questions about its operation, contact ANENG customer service for assistance.

Figure 13: ANENG After-Sales Support

8 ഉപയോക്തൃ നുറുങ്ങുകൾ

• Always double-check your connections and selected range before taking a measurement to avoid damaging the multimeter or the circuit.
• For current measurements, remember to connect the multimeter in series with the load.
• When measuring capacitance, ensure the capacitor is fully discharged before connecting the probes.
• Utilize the data hold function (short press 'HOLD/BL') to freeze readings on the display, especially when working in awkward positions or needing to record values.
• The backlight (long press 'HOLD/BL') is very useful in dimly lit environments, improving readability.
• Keep the multimeter's protective silicone sheath on to guard against accidental drops and impacts.