User Manual Autoranging Mini Multimeter Model MN16A Additional User Manual Translations available at www.extech.
Introduction Congratulations on your purchase of the Extech MN16A Autoranging Multimeter. This meter measures AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency, Diode Test, and Continuity plus Thermocouple Temperature. It features a rugged design for heavy duty use This meter is shipped fully tested and calibrated and, with proper use, will provide years of reliable service.
CAUTIONS • Improper use of this meter can cause damage, shock, injury or death. Read and understand this user manual before operating the meter. • Always remove the test leads before replacing the battery or fuses. • Inspect the condition of the test leads and the meter itself for any damage before operating the meter. Repair or replace any damage before use. • Use great care when making measurements if the voltages are greater than 25VAC rms or 35VDC. These voltages are considered a shock hazard.
SAFETY INSTRUCTIONS This meter has been designed for safe use, but must be operated with caution. The rules listed below must be carefully followed for safe operation. 1.
Controls and Jacks 1. 4,000 count LCD display 2. MODE button 3. HOLD button 4. Function switch 5. COM input jack 6. 10A input jack 7. V, Ω, CAP, Temp, Hz, µA and mA input jack 8. REL button 9. RANGE button 10.
Operating Instructions WARNING: Risk of electrocution. High-voltage circuits, both AC and DC, are very dangerous and should be measured with great care. 1. ALWAYS turn the function switch to the OFF position when the meter is not in use. 2. If “OL” appears in the display during a measurement, the value exceeds the range you have selected. Change to a higher range. DC VOLTAGE MEASUREMENTS CAUTION: Do not measure DC voltages if a motor on the circuit is being switched ON or OFF.
DC CURRENT MEASUREMENTS CAUTION: Do not make 20A current measurements for longer than 30 seconds. Exceeding 30 seconds may cause damage to the meter and/or the test leads. 1. 2. 3. 4. 5. 6. 7. 8. 9. Insert the black test lead banana plug into the negative COM jack. For current measurements up to 4000µA DC; Set the function switch to the µA position and insert the red test lead banana plug into the µA jack.
RESISTANCE MEASUREMENTS WARNING: To avoid electric shock, disconnect power to the unit under test and discharge all capacitors before taking any resistance measurements. Remove the batteries and unplug the line cords. 1. 2. 3. 4. 5. Set the function switch to the Ω position. Insert the black test lead banana plug into the negative COM jack. Insert the red test lead banana plug into the positive Ω jack. Press the MODE button to indicate “Ω" on the display.
TEMPERATURE MEASUREMENTS 1. Set the function switch to the ºF or ºC position. 2. Insert the Temperature Probe into the input jacks, making sure to observe the correct polarity. 3. Touch the Temperature Probe head to the part whose temperature you wish to measure. Keep the probe touching the part under test until the reading stabilizes (about 30 seconds). 4. Read the temperature in the display. Note: The temperature probe is fitted with a type K mini connector.
AUTORANGING/MANUAL RANGE SELECTION When the meter is first turned on, it automatically goes into Autoranging. This automatically selects the best range for the measurements being made and is generally the best mode for most measurements. For measurement situations requiring that a range be manually selected, perform the following: 1. 2. Press the RANGE button. The “Auto” display indicator will turn off. Press the RANGE key to step through the available ranges.
Maintenance WARNING: To avoid electric shock, disconnect the test leads from any source of voltage before removing the back cover or the battery or fuse covers. WARNING: To avoid electric shock, do not operate your meter until the battery and fuse covers are in place and fastened securely. This MultiMeter is designed to provide years of dependable service, if the following care instructions are performed: 1. KEEP THE METER DRY. If it gets wet, wipe it off. 2. USE AND STORE THE METER IN NORMAL TEMPERATURES.
Specifications Function Range DC Voltage (V DC) 4V 0.001V 40V 0.01V 400V 0.1V 600V 1V AC Voltage (V AC) (50 / 60Hz) Resolution Accuracy ±(1.2% reading + 2 digits) ±(1.5% reading + 2 digits) 400mV* 0.1mV ±(1.5% reading + 15 digits) 4V 0.001V ±(1.2% reading + 3 digits) 40V 0.01V 400V 0.1V 600V 1V ±(1.5% reading + 3 digits) ±(2.0% reading + 4 digits *400mV range is not autoranging DC Current (A DC) AC Current (A AC) Resistance Capacitance 400µA 0.1µA 4000µA 1µA ±(1.
Function Range Resolution Accuracy Frequency 5.000Hz 50.00Hz 500.0Hz 5.000kHz 50.00kHz 500.0kHz 5.000MHz 0.001Hz 0.01Hz 0.1Hz 0.001kHz 0.01kHz 0.1kHz 0.001MHz ±(1.5% reading + 5 digits) ±(1.2% reading + 3 digits) ±(1.5% reading + 4 digits) Sensitivity: >0.5V rms min. [ 1MHz; >3V rms > 1MHz NOTE: Accuracy is stated at 18°C to 28°C (65°F to 83°F) and less than 75% RH.
