ANENG ST209 Clamp Multimeter User Manual

Introduction

This manual provides essential information for the proper operation of the ANENG ST209 clamp multimeter. Please keep this manual for the entire period of the device's use.

The manufacturer is not liable for any damage resulting from failure to comply with this manual.

Warning: Failure to observe warnings and instructions may lead to electric shock, fire, or serious injury, as well as irreversible damage to the device.

1.1. About This Manual

This manual contains information necessary for the correct operation of the ANENG ST209 clamp multimeter. Please retain the manual for the entire period of the device's operation.

The manufacturer is not responsible for any damages incurred as a result of not following this manual.

Attention! Non-compliance with warnings and instructions can lead to electric shock, fire, or serious injury, as well as irreversible damage to the device.

1.2. Storage and Transportation

Improper transportation may lead to device damage. To avoid damage, always transport the device in its original packaging.

The device should be stored in a dry place, protected from dust and direct sunlight.

Attention! Exposure of the device to oil, water, gas, or other substances capable of causing corrosion is not permitted.

1.3. Disposal

Electronic equipment is not considered household waste and must be disposed of in accordance with applicable legal requirements.

Safety Precautions

Attention! The device contains small parts.

1. This device is not intended for use by individuals with limited physical, sensory, or mental capabilities.
2. Use of the device by children is not permitted.
3. Exercise caution when working with the device to prevent it from falling and to avoid electric shock.
4. The parameters of the power supply network must comply with the technical specifications of the device.

Package Contents

The device package includes:

• Clamp multimeter – 1 pc.
• Test leads – 2 pcs.
• Thermocouple – 1 pc.
• Storage pouch – 1 pc.
• User Manual – 1 pc.

Technical Specifications

Device Description

The ANENG ST209 clamp multimeter is designed for measuring various electrical parameters. The device features a clear LCD display, a rotary function selector, and buttons for specific functions like range selection, data hold, and backlight control.

Description of Controls:

• 1. Jaw Opening: The primary component for clamping around a conductor to measure current.
• 2. Product Information Label: Contains essential details about the device.
• 3. RANGE Button: Used for manual range selection for measurements.
• 4. REL Button: Used for relative capacitance measurements.
• 5. Function Selection / Backlight: Press to select measurement functions. Press and hold for over 2 seconds to turn the backlight on or off.
• 6. LCD Display: Shows measurement readings, units, and function indicators.
• 7. COM Terminal: Common terminal, typically for the black test lead.
• 8. Signal Terminal (V/Ω/Hz): Terminal for connecting test leads for voltage, resistance, capacitance, current, continuity, and diode measurements, as well as the pulse generator output.
• 9. HOLD Button: Freezes the current reading. Press and hold for over 2 seconds to turn the flashlight on or off.
• 10. Function Selector Switch: Rotates to select the primary measurement mode (e.g., Voltage, Current, Resistance).
• 11. Jaw Release Button: Used to open the clamp jaws.

Operation

6.1. DC Voltage Measurement (DCV)

Procedure:

1. Connect the black test lead to the "COM" terminal and the red test lead to the "V/Ω/Hz" terminal.
2. Set the selector switch to the "V" position. The measurement range will automatically adjust based on the input voltage.
3. Use the test leads to measure the voltage at the test points. The voltage value and polarity will be displayed.

Notes:

• Input voltage should not exceed 1000 V DC or 750 V AC, otherwise the device may be damaged.
• When measuring high voltages, strictly adhere to safety procedures to prevent electric shock.
• After completing measurements, disconnect the test leads from the test points.

6.2. AC Voltage Measurement (ACV)

Procedure:

1. Connect the black test lead to the "COM" terminal and the red test lead to the "V/Ω/Hz" terminal.
2. Set the selector switch to the "V" position. The measurement range will automatically adjust based on the input voltage. If there is no voltage, the 6 V range is used. Random readings may appear but do not affect measurement accuracy.
3. Measure the voltage at the test points. The voltage value will be displayed.

Notes:

• Random readings may appear before touching the test points; this is normal and does not affect accuracy.
• Input voltage should not exceed 750 Vrms, otherwise the device may be damaged.
• When measuring high voltages, strictly adhere to safety procedures to prevent electric shock.
• After completing measurements, disconnect the test leads from the test points.

6.3. DC Current Measurement (DC A)

Procedure:

1. Set the selector switch to the "600 A" position.
2. Use the "SELECT" button to choose the automatic DC measurement mode (DC current measurement is the default). The range will automatically switch between 60 A and 600 A based on the measured value. Operating the device near electromagnetic fields may negatively affect accuracy.
3. Press "REL" to zero the readings before measurement. Slowly press the jaw release button (item 10) to open the jaws wide enough for the conductor. The conductor should be placed in the center of the jaws. The measured value with polarity will be displayed. Measure only one conductor at a time; measuring multiple conductors will result in incorrect readings.
4. When performing current measurements, the "V/Ω/Hz" and "COM" test leads should be disconnected as large currents are being measured.

Note: The maximum input current is 600 A. If the permissible value is exceeded, the display will show "OL".

6.4. AC Current Measurement (AC A)

Procedure:

1. Set the selector switch to the "600 A" position.
2. Use the "SELECT" button to choose the automatic AC measurement mode (the default is DC current measurement). The range will automatically switch between 60 A and 600 A based on the measured value.
3. Slowly press the jaw release button (item 10) to open the jaws wide enough for the conductor. The conductor should be placed in the center of the jaws. The measured value with polarity will be displayed. Measure only one conductor at a time; measuring multiple conductors will result in incorrect readings.
4. When performing current measurements, the "V/Ω/Hz" and "COM" test leads should be disconnected as large currents are being measured.

Note: The maximum input current is 600 A. If the permissible value is exceeded, the display will show "OL".

6.5. Resistance Measurement (Ω)

Procedure:

1. Connect the black test lead to the "COM" terminal and the red test lead to the "V/Ω/Hz" terminal.
2. Set the selector switch to the "Ω" position.
3. Use the "SELECT" button to choose the automatic resistance measurement mode.

Notes:

• When measuring low resistances, the internal resistance of the test leads contributes significantly to the measured value. To account for this, record the value displayed when the test leads are shorted, then subtract this value from the measured readings.
• For maximum accuracy when measuring circuit resistance, the circuit must be de-energized and all capacitors discharged beforehand.
• Although the device has protection, do not apply voltage to the circuit being measured.

6.6. Diode Test and Continuity Test

Diode Test:

1. Connect the black test lead to the "COM" terminal and the red test lead to the "V/Ω/Hz" terminal (red lead is "+").
2. Set the selector switch to the "→|" position.
3. Use the "SELECT" button to select the diode test mode and measure the desired diode with the test leads. The approximate forward voltage drop across the diode will be displayed. For silicon PN junctions, the voltage drop is approximately 500-800 mV. If the diode is faulty or the leads are connected with reverse polarity, "OL" will be displayed.

Continuity Test:

4. Use the "SELECT" button to select the continuity test mode and test the desired circuit with the test leads. If the resistance between the test points is less than (50 ±20) Ohm, an audible signal will sound.

Note: Do not apply voltage to the circuit when using the "→|" measurement mode, as this may damage the device.

[continuity-test-symbol] Audible continuity indicator

6.7. Capacitance Measurement (C)

Procedure:

1. Connect the black test lead to the "COM" terminal and the red test lead to the "V/Ω/Hz" terminal (red lead is "+").
2. Set the selector switch to the "C" position and select the automatic capacitance measurement mode using the "SELECT" button.
3. Measure the capacitance of the capacitor with the test leads.

Notes:

• When measuring capacitance, the display may show the capacitance of the test leads. Subtract these values from the measurement results.
• When measuring large capacitances, readings may fluctuate for several seconds before stabilizing.
• Fully discharge the capacitor before measuring its capacitance to prevent possible damage to the fuse and the device.
• Measurement units: 1 F = 1000 mF, 1 mF = 1000 µF, 1 µF = 1000 nF, 1 nF = 1000 pF.

6.8. Frequency Measurement (Hz)

Procedure:

1. Connect the black test lead to the "COM" terminal and the red test lead to the "V/Ω/Hz" terminal (red lead is "+").
2. Set the selector switch to the "Hz" position. Measure the frequency of the signal source or the circuit under test using the test leads.

Notes:

• Measurement accuracy may increase if the input voltage exceeds 10 Vrms.
• For weak signals in high-noise environments, it is recommended to use shielded cables.
• When measuring high-voltage circuits, observe all necessary safety precautions to prevent electric shock.
• Do not measure voltages above 250 V DC or AC, as this may damage the device.

6.9. Temperature Measurement (°C/°F)

Procedure:

1. Set the selector switch to the "TEMP" position.
2. Insert the thermocouple into the "V/Ω/Hz" and "COM" terminals. The measured temperature will be displayed.
3. Press the "SELECT" button to switch between temperature units (°C / °F).

Note: Do not apply voltages exceeding 250 V DC or AC to the input terminals, as this may damage the device.

6.10. Pulse Generator (LL)

Procedure:

1. Set the selector switch to the "LL" mode (default frequency: 50 Hz).
2. Insert the receiver probes into the "V/Ω/Hz" and "COM" terminals.
3. Use the "SELECT" button to choose the frequency of the generated pulses. The selection order is: 50 Hz - 100 Hz - 200 Hz - 300 Hz - 400 Hz - 500 Hz - 600 Hz - 700 Hz - 800 Hz - 900 Hz - 1000 Hz - 2000 Hz - 3000 Hz - 4000 Hz - 5000 Hz. The current frequency value is displayed on the device.

Note: Do not apply voltages exceeding 250 V DC or AC to the input terminals, as this may damage the device.

6.11. Non-Contact Voltage Measurement (NCV)

Procedure:

1. Set the selector switch to the "NCV" position (the display will show "EF").
2. The front of the meter has elements for non-contact measurements. When AC voltage is detected in the front area, an audible signal will sound, the frequency of which depends on the signal strength. The detected signal strength is also indicated on the display by dashes.

6.12. Automatic Power Off

The meter automatically turns off after 15 minutes of inactivity. To turn it back on, set the selector switch to "OFF", then set it to a measurement mode again. To disable the automatic power-off function, press and hold the "SELECT" button while turning on the meter. The "APO" symbol on the display should then turn off.

Technical Maintenance and Cleaning

• During normal operation, the device is safe for the user and does not require special technical maintenance.
• The device is not intended for use in adverse atmospheric conditions. It is not waterproof and should not be exposed to high temperatures. The operating conditions of the device are similar to those of general electronic equipment, such as laptops.
• The device is not waterproof; therefore, it should be cleaned with a dry, soft cloth.

Country of Manufacture: PRC