1. Introducció
The ANENG ST203 is a pocket-sized, 3 3/4-digit automatic digital instrument designed for stable performance, high precision, and reliability. It features a clear reading display and comprehensive overload protection, making it an ideal tool for electrical testing and measurement. This manual provides detailed instructions for the safe and effective use of your ST203 Digital Multimeter Clamp Metre.
2. Informació de seguretat
Please read and understand all safety warnings and operating instructions before using this instrument. Failure to do so may result in injury or damage to the meter.
- Quan es mesura el voltage, no introduïu un voltage exceeding the effective value of DC 1000V or AC 750V. Exceeding these limits can damage the instrument and pose a safety risk.
- Voltages below 36V DC and 25V AC are generally considered safe. When measuring voltages higher than these values, always ensure that the test leads are in reliable contact, connected correctly, and well-insulated to prevent electric shock.
- Before changing functions or ranges, ensure the test leads are disconnected from the test point to avoid incorrect readings or potential hazards.
- Do not operate the meter if it appears damaged or if the test leads are damaged.
- Always use the correct terminals, function, and range for your measurements.
- Aneu amb compte quan treballeu amb volumtagsuperiors a 60 V CC o 30 V CA RMS, ja que representen un perill de descàrrega elèctrica.
3. Producte acabatview
3.1. Components i característiques
The ANENG ST203 is designed for ease of use and durability. Key components include the clamp jaw for current measurement, the LCD display, function buttons, and input terminals.
Figura 3.1: Frontal view of the ANENG ST203 Digital Multimeter Clamp Meter, highlighting its compact design and clear button layout.
Figure 3.2: The complete package contents, including the ANENG ST203 meter, test leads, instruction manual, and portable storage bag.
Figura 3.3: El clamp meter in action, demonstrating its automatic detection capability for single-line AC current measurement.
3.2. Pantalla i controls
The meter features a clear LCD display and intuitive controls for various measurement functions.
Figure 3.4: Close-up of the HD display, showing clear and bright readings even in environments requiring backlighting.
The display shows 4000 counts with automatic polarity indication. It features a backlight for improved visibility in low-light conditions. The meter also includes a flashlight for illuminating the test area.
Figure 3.5: The integrated anti-fall lanyard, providing convenient and secure handling to prevent accidental drops.
4. Configuració
4.1. Instal·lació de la bateria
The ANENG ST203 is powered by AAA 1.5V batteries (not included). To install or replace batteries:
- Ensure the meter is turned off and test leads are disconnected from any circuits.
- Localitzeu la tapa del compartiment de la bateria a la part posterior del mesurador.
- Utilitzeu un tornavís per obrir el compartiment de la bateria.
- Insert the AAA 1.5V batteries, observing the correct polarity (+/-) as indicated inside the compartment.
- Substituïu la tapa del compartiment de la bateria i fixeu-la amb el cargol.
5. Instruccions de funcionament
The ANENG ST203 offers various measurement functions. Always ensure the correct function is selected and test leads are properly connected before taking a measurement.
5.1. DC Voltage (DCV) Measurement
- Turn the rotary switch to the DCV position.
- Connect the red test lead to the VΩHz terminal and the black test lead to the COM terminal.
- Connect the test leads across the circuit or component to be measured.
- Llegeix el voltage valor a la pantalla LCD.
5.2. AC Voltage (ACV) Measurement
- Turn the rotary switch to the ACV position.
- Connect the red test lead to the VΩHz terminal and the black test lead to the COM terminal.
- Connect the test leads across the AC circuit or component.
- Llegeix el voltage valor a la pantalla LCD.
5.3. AC Current (ACA) Measurement (Clamp funció)
- Turn the rotary switch to the ACA position.
- Obriu el clamp mandíbula prement el gallet.
- Enclose only one conductor of the circuit with the clamp mandíbula. No tanqueuamp multiple conductors, as this will result in an inaccurate reading.
- Tanqueu el clamp jaw securely.
- Llegiu el valor actual a la pantalla LCD.
5.4. Resistance Measurement / On-Off Test
- Turn the rotary switch to the Ω position.
- Connect the red test lead to the VΩHz terminal and the black test lead to the COM terminal.
- For resistance, connect the test leads across the component. For on-off test (continuity), connect the leads across the circuit.
- Read the resistance value or listen for the continuity buzzer.
5.5. Frequency (Hz) Measurement
- Gireu el commutador giratori a la posició Hz.
- Connect the red test lead to the VΩHz terminal and the black test lead to the COM terminal.
- Connect the test leads across the circuit where frequency is to be measured.
- Llegiu el valor de freqüència a la pantalla LCD.
5.6. Vol sense contactetagProva e (NCV)
- Press the NCV button.
- Move the top part of the meter (NCV sensor) close to the conductor or power outlet.
- The meter will beep and/or flash its indicator light if AC voltages detecta e.
5.7. Zero Line / Fire Line Test
This function helps identify live (fire) and neutral (zero) wires. Refer to the specific instructions in the meter's display or manual for detailed usage of this feature.
6. Manteniment
6.1. Neteja
Per netejar el mesurador, netegeu la carcassa amb aiguaamp drap i detergent suau. No utilitzeu abrasius ni dissolvents. Assegureu-vos que el mesurador estigui completament sec abans d'utilitzar-lo.
6.2. Emmagatzematge
When not in use for extended periods, remove the batteries to prevent leakage. Store the meter in a cool, dry place, away from direct sunlight and extreme temperatures.
7. Solució De Problemes
If you encounter issues with your ANENG ST203, refer to the table below for common problems and solutions.
| Problema | Causa possible | Solució |
|---|---|---|
| El comptador no s'encén | Bateries gastades o mal instal·lades | Comproveu la polaritat de la bateria; substituïu les piles. |
| Sense lectura o lectura inestable | Incorrect function selected; poor test lead connection; open circuit | Select correct function; ensure leads are firmly connected; check circuit for breaks. |
| Es mostra "OL" | Overload (measurement exceeds range) | Select a higher range if available, or ensure the measured value is within the meter's capabilities. |
| Inaccurate AC current reading | Multiple conductors clamped; external magnetic fields | Assegureu-vos que només un conductor estigui clamped; move away from strong magnetic fields. |
8. Especificacions
Detailed technical specifications for the ANENG ST203 Digital Multimeter Clamp Metre.
Figure 8.1: Summary of key product specifications including brand, model, color, battery, accessories, and size.
| Paràmetre | Valor |
|---|---|
| Mostra | Liquid Crystal Display (LCD), 4000 counts |
| Mètode de mesura | Doble conversió A/D integral |
| SampTarifa ling | Aproximadament 3 vegades per segon |
| Visualització de l'abast | "OL" |
| Volum baixtage Visualització | Battery symbol appears |
| Entorn de treball | 0-40 °C, humitat relativa <80% |
| Font d'alimentació | AAA 1.5V battery (x2) |
| Dimensions (LWH) | 170 mm x 65 mm x 30 mm (6.7 polzades x 2.56 polzades x 1.18 polzades) |
| Pes | Aproximadament 160 g (sense les piles) |
| DC Voltage (DCV) Range | 4V-40V-400V-600V (±0.5%+3) |
| Vol. ACtage (ACV) Range | 4V-40V-400V-600V (±1%+3) |
| AC Current (ACA) Range | 15mA-4A-40A-400A-600A (±2.5%+8) |
| Interval de resistència | 4kΩ-40kΩ-400kΩ-4MΩ-40MΩ (±0.5%+3) |
| Interval de mesura de freqüència | 4Hz-40Hz-400Hz-4kHz-40kHz-400kHz- |
| Mesurament RMS real | Sí |
| Flashlight Lighting | Sí |
| Funció HOLD | Sí |
| Apagat automàtic | Sí |
| Opcions de color | Red, Blue, Orange, Black |
Figure 8.2: Detailed dimensions of the ANENG ST203, showing its compact and ergonomic size.
9. Garantia i Suport
For any questions regarding the operation, maintenance, or troubleshooting of your ANENG ST203 Digital Multimeter Clamp Meter, please refer to this manual. If further assistance is required, contact the seller or manufacturer's customer support channel. Please retain your purchase receipt for any warranty claims, though specific warranty terms are not detailed here.
