Related Manuals for Elenco Electronics M-2625
Summary of Contents for Elenco Electronics M-2625
- Page 1 All manuals and user guides at all-guides.com OPERATOR’S INSTRUCTION MANUAL M-2625 AUTO RANGING DIGITAL MULTIMETER with Temperature Probe Copyright © 2007 Elenco ® Electronics, Inc.
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Page 2: Table Of Contents
All manuals and user guides at all-guides.com Contents 1. Safety Information 2. Safety Symbols 3. Front Plate of the Meter Input Terminal Function Rotary Switch Function Press Button LCD Display 4. Power On Option 5. Auto Power Off 6. Measurement Range 7. -
Page 3: Safety Information
All manuals and user guides at all-guides.com Introduction This series LCD auto ranging and auto power-off digital multimeter is a portable, compact, 3¾ digit multimeter. It is ideally suited for field, lab, shop, car, and home. CAUTION: Read, understand and follow all Safety Rules and Operating Instructions in this manual before using this product. - Page 4 All manuals and user guides at all-guides.com Table 1. Safety Information (continued) Warning • When servicing the meter, use only specified replacement parts. • Use caution when working above 30VAC rms, 42V peak, or 60VDC. Such voltages pose a shock hazard. •...
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Page 5: Safety Symbols
All manuals and user guides at all-guides.com 2. Safety Symbols Symbols used on the meter and in this manual are explained in Table 2. Table 2. International Electrical and Relative Symbols AC (Alternating Current) Important Information DC and AC Caution, risk of electric shock DC (Direct Current) Earth Ground Equipment Safety Standard... -
Page 6: Input Terminal
All manuals and user guides at all-guides.com Input Terminal About terminal function refer to Table 3 and Figure 2. Figure 2. Input Terminal Table 3. Input Terminal Terminal Function Description V / Ω Ω / Hz / ) / Volts, ohm, diode, frequency, DUTY, temperature and capacitance measurement, and testing for continuity terminal Milliampere current, microampere current measurement terminal Common terminal for all measurements... -
Page 7: Function Rotary Switch
All manuals and user guides at all-guides.com Figure 3. Function Rotary Switch Table 4. Function Rotary Switch Symbols Position of Switch Function DC/AC voltage measurement Ω Ω Resistance measurement, diode test, testing for continuity Capacitance measurement Frequency measurement / Duty cycle measurement... -
Page 8: Function Press Button
All manuals and user guides at all-guides.com Table 4. Function Rotary Switch Symbols (continued) Position of Switch Function Temperature measurement µ µ A DC/AC microampere current measurement DC/AC milliampere current measurement DC/AC ampere current measurement Power off position Function Press Button About press function button refer to Figure 4. -
Page 9: Lcd Display
All manuals and user guides at all-guides.com 3. REL ∆ ∆ (relative measurement) Press the REL∆ ∆ button to use the relative measuring function and a “REL∆” symbol appears on the LCD. The result of the relative measurement is the difference between the measuring value and the momentary value by press the REL ∆... - Page 10 All manuals and user guides at all-guides.com Figure 5. LCD Display Table 5. LCD Display Symbols Sequ. No. Symbol Description 8.8.8.8 The display digit group – Negative symbol AC (alternating current) indicator Battery power is weakening RS232 Serial transmission (not used on this meter) Auto Auto range indicator REL ∆...
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Page 11: Power On Option
All manuals and user guides at all-guides.com Table 5. LCD Display Symbols (continued) Sequ. No. Symbol Description Temperature units C not used on this meter) Percent symbol nF / µ µ F mV / V Voltage units Capacitance units mA / A Current units Overload 4. -
Page 12: Making Measurements
All manuals and user guides at all-guides.com • When you change the measurement function, the meter will regard its auto range as current range. • In the auto range mode, the “AUTO” symbol will appear on display and the manual range disappears. 3. -
Page 13: Measuring Dc Voltage
All manuals and user guides at all-guides.com Measuring DC Voltage 1. Turn on the meter, then set up the meter to measure DC volts as shown in Figure 6. 2. Insert the black test lead into the COM terminal and the red test lead into the terminal. -
Page 14: Measuring Ac Voltage
All manuals and user guides at all-guides.com Measuring AC Voltage 1. Turn on the meter, then set up the meter to measure AC volts as shown in Figure 7. 2. Insert the black test lead into the COM terminal and the red test lead into the terminal. - Page 15 All manuals and user guides at all-guides.com Figure 7. AC Voltage Measurement Note: When taking a measurement of less than 20mV at the 400mV AC range, the measurement value cannot be indicated correctly. remain indicated. In that case, by pressing the REL∆ ∆ button, “0” will Even if shorted, the input line at the 4V AC range, 1 ~ 3 digits may be indicated.
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Page 16: Measuring Current
All manuals and user guides at all-guides.com Measuring Current Warning Never attempt an in-circuit current measurement where the open-circuit potential to earth is greater than 300V. You may damage the meter or be injured if the fuse blows during such a measurement. Caution To avoid possible damage to the meter or to the equipment under test, check the meter’s fuses before measuring... -
Page 17: Measuring Dc Current
All manuals and user guides at all-guides.com Measuring DC Current 1. Turn off power to the circuit. Discharge all high-voltage capacitors. 2. Turn on the meter, then set up the meter to measure DC current as shown in Figure 8. 3. - Page 18 All manuals and user guides at all-guides.com Figure 8. DC Current Measurement -18-...
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Page 19: Measuring Ac Current
All manuals and user guides at all-guides.com Figure 8. DC Current Measurement (continued) Measuring AC Current 1. Turn off power to the circuit. Discharge all high-voltage capacitors. 2. Turn on the meter, then set up the meter to measure AC current as shown in Figure 9. - Page 20 All manuals and user guides at all-guides.com Note: To avoid blowing the meter’s 500mA fuse, use the mA terminal only if you are sure the current is less than 400mA. Figure 9. AC Current Measurement -20-...
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Page 21: Measuring Resistance
All manuals and user guides at all-guides.com Figure 9. AC Current Measurement (continued) Measuring Resistance Caution To avoid possible damage to the meter or to the equipment under test, disconnect the circuit power and discharge all high-voltage capacitors before measuring resistance. Resistance is an opposition to current flow. - Page 22 All manuals and user guides at all-guides.com 1. To measure resistance, turn on the meter, then set up the meter as shown in Figure 10. 2. Insert the black test lead into the COM terminal and the red test lead into the terminal.
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Page 23: Testing Diodes
All manuals and user guides at all-guides.com Testing Diodes Caution To avoid possible damage to the meter or to the equipment under test, disconnect the circuit power and discharge all high-voltage capacitors before testing diodes. Use the diode test to check diodes, transistors, silicon controlled rectifiers (SCRs), and other semiconductor devices. -
Page 24: Testing For Continuity
All manuals and user guides at all-guides.com Note: Open-circuit voltage between measuring terminals is approximately 1.5V (measuring current approximately 1.5mA). Testing for Continuity Caution To avoid possible damage to the meter or to the equipment under test, disconnect the circuit power and discharge all high-voltage capacitors before testing for continuity. -
Page 25: Measuring For Capacitance
All manuals and user guides at all-guides.com Keep the following in mind while doing a continuity test: • Even with the test leads shorted, the indicated value may not be REL ∆ ∆ “0”. This is because of the resistance of the test leads and not a fault. - Page 26 All manuals and user guides at all-guides.com Figure 13. Capacitance Measurement -26-...
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Page 27: Measuring Frequency
All manuals and user guides at all-guides.com Measuring Frequency Frequency is the number of cycles a signal completes each second. The meter measures the frequency of a voltage or current signal by counting the number of times the signal crosses a threshold level each second. -
Page 28: Measuring Duty Cycle
All manuals and user guides at all-guides.com Measuring Duty Cycle Duty cycle (or duty factor) is the percentage of time a signal is above or below a trigger level during one cycle (Figure 16). To measure duty cycle, proceed as follows: 1. -
Page 29: Measuring Temperature
All manuals and user guides at all-guides.com Figure 16. Duty Cycle Measurement Measuring Temperature Warning To avoid the potential of fire or electrical shock, do not connect the thermocouples to electrically live circuits. To measure temperature, proceed as follows: 1. Turn on the meter, then set up the meter as shown in Figure 17. 2. - Page 30 All manuals and user guides at all-guides.com Figure 17. Temperature Measurement -30-...
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Page 31: Maintenance
All manuals and user guides at all-guides.com 8. Maintenance General Maintenance Periodically wipe the case with a damp cloth and mild detergent. Do not use abrasives or solvents. Dirt or moisture in the terminals can affect readings. Clean the terminals as follows: 1. -
Page 32: Fuse Replacement
All manuals and user guides at all-guides.com Replacing the Fuses Warning replacement fuses ∅ ∅ 5x20 0.5A/250V FAST or ∅ ∅ 6x25 To avoid electrical shock or damage to the meter, only use 10A/250V FAST. Referring to Figure 19, examine or replace the meter’s fuses as follows: 1. -
Page 33: General Specifications
9. General Specifications All manuals and user guides at all-guides.com Display: 3¾ digit LCD with a maximum reading of 3999. Range Control: Auto range or manual range control. Polarity: Automatic negative polarity indication. Zero Adjustment: Automatic Overrange Indication: Only the “OL” display. Low Battery: The symbol “... - Page 34 All manuals and user guides at all-guides.com Table 8. ACV Detailed Accuracy Specifications Range Resolution Accuracy Note 400mV 0.1mV ±(1.5% rdg + 8) Frequency Response: 50Hz - 400Hz Input Resistance: 10MΩ ±(0.8% rdg + 5) 10mV Overload Protect: 400mV 400V 100mV range 250V rms.
- Page 35 All manuals and user guides at all-guides.com Table 12. Capacitance Detailed Accuracy Specifications Range Resolution Accuracy Note 40nF 10pF ±(3.5% rdg + 10) 400nF 100pF 4µF ±(3.0% rdg + 5) Overload Protect: 250V rms 40µF 10nF 100µF 100nF ±(3.5% rdg + 5) Table 13.
- Page 36 All manuals and user guides at all-guides.com Elenco ® Electronics, Inc. 150 Carpenter Avenue Wheeling, IL 60090 (847) 541-3800 Web site: www.elenco.com e-mail: elenco@elenco.com...