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Summary of Contents for Tenma 72-3530
- Page 1 Industrial True RMS Digital Multimeter Model: 72-3530...
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Page 2: Table Of Contents
CONTENTS Page Number Details What’s Included Important Safety Information Product Overview Display Function Selection & Buttons Buttons Measuring Measuring AC/DC Voltage Measuring Resistance/Conductivity Measuring Circuit Switching Diode Test Measuring Capacitance Measuring Frequency/Duty Ratio Measuring Temperature Measuring AC/DC 60A/600A ACA/DCA External Input Current Calipers Measurement Non-contact AC Voltage Sensing Square-wave Output Other Functions... -
Page 3: Important Safety Information
IMPORTANT SAFETY INFORMATION • When using electrical appliances basic safety precautions should always be followed. • Before use, check the insulation layer of the probe, which should be kept intact and without damage. • There are no user-serviceable parts in this product. Refer all servicing to qualified personnel. -
Page 4: Display
DISPLAY Symbol Specification Data recall Data storage Data hold AC low impedance Negative value Measuring of voltage to frequency converter Alarm for high voltage • 1 ) Circuit on-off measurement � Automatic shutdown Auto Automatic range Peak Peak measuring MIN/AVG/MAX Prompt for measuring minimum/average/maximum value AC/DC AC/DC measurement... -
Page 5: Function Selection & Buttons
FUNCTION SELECTION & BUTTONS Function Knob Description V~ V AC/DC Voltage measurement AC low impedance voltage measurement Ω Resistance measurement Conductivity measurement Diode PN junction voltage measurement • 1 ) ) Circuit on-off measurement Capacitance measurement Frequency measurement Duty ratio measurement % (4-20mA) For measurement on (4-20mA) current transducer only °C °F... - Page 6 • In automatic recording, press the HOLD/Esc button to exit Automatic Storage. RECALL button • Press the button to enter Recall Mode and the LCD will display “ ”. • In Recall Mode, the auxiliary display shows the number for current data. •...
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Page 7: Measuring
communication on/off, “bEEp” (key beep) for buzzer switch on/off, “ALO” (ALO time) for automatic light off, “APO” (APO time) for automatic power supply off, “DEL” (format MEM) for memory formatting. • Short press the arrow button to select an item and short press HOLD to exit the setting menu. -
Page 8: Measuring Resistance/Conductivity
MEASURING RESISTANCE/CONDUCTIVITY • When measuring ultra-high resistance, higher than 40MΩ, it is advised to use nS range to measure its conductivity G: G=1/R (Ω). The unit Siemens (S)=10 9/R (Ω). The unit is (nS). • By virtue of the function of resistance measuring, it is allowed to make self-checks on built-in fuses. -
Page 9: Measuring Circuit Switching
MEASURING CIRCUIT SWITCHING • If resistance between two terminals measured is higher than 100Ω, it shall be deemed as open circuit and the buzzer will not sound. • If the resistance between the two terminals measured is lower than 10Ω, it shall be deemed as sound conductivity of a circuit and the buzzer will produce a constant sound. -
Page 10: Measuring Frequency/Duty Ratio
instrument to make automatic deduction, facilitating measuring reading. Caution • If metered capacitance is in short circuit, or capacitance is beyond the maximum range of the instrument, the LCD will display “OL”. • When measuring large bulk capacitance it is normal to take a few seconds to measure. -
Page 11: Measuring Ac/Dc
MEASURING AC/DC • When measuring online AC, press the Hz% button to select the auxiliary display frequency/duty ratio measuring mode. • Press SELECT to select the AC + DC measuring mode and the “AC+DC” value will be shown on the main display. When pressing the Hz% button, the •... -
Page 12: Non-Contact Ac Voltage Sensing
NON-CONTACT AC VOLTAGE SENSING • When checking whether the AC voltage or the electromagnetic field exists in sensing space, approach the front end of the instrument to the metered object for sensing detection. • If the analogue capacity of sensing AC voltage is lower than or equal to critical voltage V1, the main display will LIGHT(2S) -
Page 13: Other Functions
OTHER FUNCTIONS Automatic Shutdown • If the knob switches and buttons are not operated within the set shutdown time (5- 30 minutes), the instrument will automatically shutdown to save energy. • In the state of automatic shutdown, press any button or turn the knob switch and it will automatically wake up. -
Page 14: Technical Specifications
TECHNICAL SPECIFICATIONS Accuracy is guaranteed for one year. Ambient temperature: 23°C ± 5°C (73.4°F ± 9°F), relative humidity ≤75%. Caution • For accuracy, the temperature conditions should be controlled between 18°C and 28°C, while the fluctuation range of the ambient temperature should be stabilised within ±1°C. -
Page 15: Measurement Of Dc Current
• Input impedance is about 10MΩ. • Display: true virtual value; range of accuracy guarantee: 10-100% of range (the 1000V range is 20~100%), it is allowed to have residual readings < 50 digits in short circuit. • AC wave peak factor can reach 3.0 in full-range value (excluding 750V range, which is 1.5 in full-range value). -
Page 16: Measurement Of Resistance/Conductance
MEASUREMENT OF RESISTANCE/CONDUCTANCE Range Resolution Accuracy ± (a% of reading + b counts) 600.00Ω 0.01Ω ± (0.05% + 10) 6.0000kΩ 0.1Ω ± (0.05% + 2) 60.000kΩ 1Ω ± (0.05% + 2) 600.00kΩ 10Ω ± (0.05% + 2) 6.0000MΩ 100Ω ± (0.15% + 5) 60.000MΩ... -
Page 17: Measurement Of Temperature
MEASUREMENT OF TEMPERATURE Range Resolution Accuracy -40~0°C ± (2% + 3°C) °C -40~1000°C >0~100°C 0.1°C ± (1% + 3°C) >100~1000°C ± (2.5%) -40~32°F ± (2.4% + 5°F) °F -40~1832°F >32~212°F 0.1F ± (1.5% + 5°F) >212~1832°F ± (2.5% + 5°F) Caution Point K-type thermocouple configured in accessory is applicable to measuring temperature below 230°C/446°F only.
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