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Axio MET AX-176 Instruction Manual

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Model AX-176
INSTRUCTION MANUAL

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Summary of Contents for Axio MET AX-176

  • Page 1 Model AX-176 INSTRUCTION MANUAL...

  • Page 2: Table Of Contents

    TITLE PAGE 1. GENERAL INSTRUCTIONS ..................4 1.1. Precaution safety measures ................. 4 1.1.1. Preliminary ....................4 1.1.2. During use ....................5 1.2. Symbols ......................6 1.3. Instructions ....................6 2. DESCRIPTION ..................... 7 2.1. Instrument Familiarization .................. 7 2.2. LCD Display ....................7 2.3.
  • Page 3 3.2.9. PC Link Contents ..................18 4. TECHNICAL SPECIFICATIONS ................. 18 4.1. General specifications ..................18 4.2. Measurement specifications ................19 4.2.1. AC Voltage ....................19 4.2.2. DC Voltage ....................19 4.2.3. Frequency ....................19 4.2.4. Duty cycle ....................20 4.2.5.

  • Page 4: General Instructions

    1. GENERAL INSTRUCTIONS This instrument complies with IEC 61010-1: 2001, CAT III and CAT IV 600V overvoltage standards. See Specifications. To get the best service from this instrument, read carefully this user’s manual and respect the detailed safety precautions. International symbols used on the Meter and in this manual are explained in chapter 1.2.

  • Page 5: During Use

    • Electicity meters, primary overcurrent protection equipment. • Outsider and service entrance, service drop from pole to building, run between meter and panel. • Overhead line to detached building, underground line to well pump *When using this Multimeter, the user must observe all normal safety rules concerning: - protection against the dangers of electric current - protection of the Multimeter against misuse.

  • Page 6: Symbols

    *Replace the battery as soon as the battery indicator ( appear. With a low battery, the Meter might produce false readings that can lead to electric shock and personal injury. *Do not measure voltages above 1000V in Category III, or 600V in Category IV installations. *When in REL mode, the “REL”...

  • Page 7: Description

    2. DESCRIPTION 2.1. Instrument Familiarization The front panel is shown as in Figure 2-1, explanation being as follows: 1) LCD display Used for displaying the measuring results and various symbols. 2) Keypad Measurement function keys. 3) Rotary switch Use for selecting measurement functions. Terminal receiving the red test lead for voltage, resistance, capacitance, frequency, temperature, diode and continuity measurements.
  • Page 8 LCD screen is shown as in Figure 2-2, with its every symbol’s meaning shown as in the Table 1: Symbol Meaning Indicator for auto Power off Indicator for DC voltage or current Indicates negative readings Indicator for AC voltage or current The Meter is In the data transmission mode PC-LINK The meter is in the Autorange mode In which the...

  • Page 9: Keypad

    2.3. Keypad 2.3.1. SELECT Ω Ω Ω Ω 1) At position Switches between Resistance measurement, Diode Test and Continuity check. 2) At V position Switches between dc and ac voltage ¡ ¡ £ £ 3) At position Switches between °C and °F 4) At A mA µA position Switches between dc and ac current.

  • Page 10: Function Description

    2.3.5. MAX/MIN This key is for measuring maximum value and minimum value. 1) Press it to enter Max/Min mode. The main-display always shows the current value, and the sub- display shows the Maximum Value. 2) Press it again; sub-display will show the Minimum Value. 3) Press and hold it for two seconds, the meter will return to normal measurement state.

  • Page 11: True Rms Measurement

    To enter and exit the manual range mode: 1) Press RANGE key. The Meter enters the manual ranging mode. AUTO turns off. Each presses of RANGE key increments the range. When the highest range is reached, the Meter wraps to the lowest range.

  • Page 12: Measurement Functions

    3) When RS232 output is active, the auto Power off function is disabled. 3.2. Measurement Functions 3.2.1. AC and DC Voltage measurement. AC Voltage DC Voltage Figure 3-1 measuring AC and DC Voltage To avoid electrical shock and/or damage to the instrument, do not attempt to take any voltage measurement that might exceeds 1000Vdc or 1000Vac rms.

  • Page 13: Frequency And Duty Cycle Measurement

    In case of probe hanging in the air, the voltage inducted by the test leads may cause unstable readings on the display screen, but that will not affect the accuracy of measurement. 3.2.2. Frequency and Duty Cycle measurement Figure 3-2 Measuring Frequency and Duty Cycle Do not measure Frequency on high voltage (>1000V) to avoid electrical shock hazard and/or damage to the instrument.

  • Page 14: Diode Test

    Figure 3-3 Measuring Resistance To avoid electrical shock and/or damage to the instrument, disconnect circuit power and discharge all high-voltage capacitors before measuring resistance. Resistance is an opposition to current flow. The unit of resistance is the ohm (Ω). The Meter measures resistance by sending a small current through the circuit.

  • Page 15: Continuity Check

    ¡ £ ¡ £ ¡ £ ¡ £ Figure 3-4 Testing a Diode To avoid elecrical shock and/or damage to the instrument, disconnect circuit Power and discharge all high-voltage capacitors before testing diodes. To test diode out of a circuit (set up the Meter as shown in Figure 3-4): 1) Set the rotary switch to Ω...

  • Page 16: Capacitance Measurement

    ¡ £ ¡ £ ¡ £ ¡ £ Figure 3-5 Checking the Continuity To avoid electrical shock and/or damage to the instrument, disconnect circuit Power and discharge all high-voltage capacitors before testing for Continuity. To test for continuity (set up the Meter as shown in Figure 3-5): 1) Set the rotary switch to Ω...

  • Page 17: Current Measurement

    To avoid electrical shock and/or damage to the instrument, disconnect circuit power and discharge all high-voltage capacitors before measuring capacitance. Use the dc voltage function to confirm that the capacitor is discharged. Capacitance is the ability of a component to store an electrical charge. The unit of capacitance is the farad (F).

  • Page 18: Temperature Measurement

    5) Break the circuit path to be tested. Touch the black probe to the more negative side of the break; touch the red probe to the more positive side of the break (reversing the leads will give a negative reading, but will not damage the Meter.) 6) Turn on power to the circuit, then read the display.

  • Page 19: Technical Specifications

    4) Select the default sampling rate or you can select other desired sampling rate. 5) Now press the Start in the PC-LINK SOFT to measure and view the synchronic data or graph in the software interface. 6) To disable the serial data output function, press SHIFT and then press RANGE again. 7) More information about the PC-LINK SOFT, please refer to the Help topic including in the software or enter our webside: www.mastech.com.cn 4.

  • Page 20: Dc Voltage

    660mV 0.1mV ±(1.0% +5) 6.6V ±(1.0% +5) 10mV ±(1.0% +5) 660V 100mV ±(1.0% +5) 1000V ±(1.5% +5) Above accuracies can be guaranteed within 5%~100% of the full range. The true RMS meter and the true RMS+PEAK meter has residual value within 10 counts when the test leads are shorten, but that will not affect the accuracy of measurement.

  • Page 21: Diode Test

    4.2.6. Diode Test Range Resolution Test Condition 0.001V Forward DC current approximately 1mA. Reversed DC voltage approximately 2.8V 4.2.7. Continuity Check Range Resolution Test Condition Open circuit voltage: approx. 660Ω 0.1Ω 0.5V Description: Continuity beeper ≤30Ω 4.2.8. Capacitance Range Resolution Accuracy 6.6nF ±(5.0% +5)

  • Page 22: General Maintenance

    leads are shorten, but that will not affect the accuracy of measurement. Overload protection: F 10A/1000V fuse for 10A range F 0.63A/1000V fuse for µA and mA ranges Maximum input current:600mA dc or 600mA ac rms for µA and mA ranges 10A dc or 10A ac rms for 10A ranges.

  • Page 23: Battery Replacement

    7) Rejoin the rear cover and tighten the screws. 5.3. Battery replacement To avoid false readings, which could lead to possible electric shock or personal injury, replace the battery as soon as the battery indicator ( ) appears. Before replacing the battery, disconnect test leads and/or any connectors from any circuit under test, turn the meter off and remove test leads from the input terminals.

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