EXTECH MiniTec Series MN36 Auto-Ranging Mini MultiMeter User Manual

: June 6, 2024
: EXTECH

Table of Contents

Introduction
Safety
Symbols
Meter Description
Operating Instructions
Maintenance
Specifications
Two-year Warranty
Contact Customer Support
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

EXTECH MiniTec Series MN36 Auto-Ranging Mini MultiMeter User Manual

Introduction

Congratulations on your purchase of Extech’s MN36 Auto-Ranging Multimeter. This meter measures AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency, Temperature, Diode Test and Continuity. Proper use and care of this meter will provide many years of reliable service.

Safety

This symbol, adjacent to another symbol or terminal, indicates the user must refer to the manual for further information.

Electric Shock Icon This symbol, adjacent to a terminal, indicates that, under normal use, hazardous voltages may be present

Double insulation

Improper use of this meter can cause damage, shock, injury or death. Read and understand this user manual before operating the meter.
Make sure any covers or battery doors are properly closed and ured.
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 any damage before use.
Do not exceed the maximum rated input limits.
Use great care when making measurements if the voltages are greater than 25VAC rms or 35VDC. These voltages are considered a shock hazard.
Always discharge capacitors and remove power from the device under test before performing Diode, Resistance or Continuity tests.
Remove the battery from the meter if the meter is to be stored for long periods.
To avoid electric shock, do not measure AC current on any circuit whose voltage exceeds 250V AC

Input Limits

Symbols

AC (voltage)
DC (direct current or voltage)
Continuity and Diode test
MV,V: millivolt, volt (voltage)
Ω kΩ ,MΩ: ohm, kilohm, megohm (resistance)
µA, mA, A: microamp, milliamp, Amp (current)
oF, oC : Degrees fahrenheit, centigrade (temperature)
Low battery
H: Display hold

Meter Description

LCD Display
DATA HOLD button
SELECT button
Function switch
Positive input jack
COM jack
10A jack
Rubber boot

Note: Tilt stand and battery access is on the rear of unit.

Operating Instructions

Voltage Measurements

Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive V jack.
Turn the rotary switch to the V position.
Press the SELECT button to select either AC or DC.
Touch the test probes to the circuit under test and read the voltage on the display.

Current Measurements

CAUTION: Do not make high current measurements on the 10A scale for longer than 15 seconds followed by a 15 minute cool down period. Exceeding 15 seconds may cause damage to the meter and/or the test leads.

Insert the black test lead banana plug into the negative COM jack.
For current measurements up to 200mA DC, set the function switch to the µA or mA position and insert the red test lead banana plug into the mA jack.
For current measurements up to 10A DC, set the function switch to the 10A range and insert the red test lead banana plug into the 10A jack.
Remove power from the circuit under test, then open up the circuit at the point where you wish to measure current.
Touch the black test probe tip to the negative side of the circuit. Touch the red test probe tip to the positive side of the circuit.
Apply power to the circuit.
Read the current in the display.

Resistance Measurements

Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive Ω jack.
Set the function switch to the Ω position.
Touch the test probe tips across the circuit or part under test. It is best to disconnect one side of the part under test so the rest of the circuit will not interfere with the resistance reading.
Read the resistance in the display.

Capacitance Measurements

Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive CAP jack.
Turn the rotary switch to the position.
Touch the test probes to the circuit or device under test and read the capacitance on the display.

Frequency Measurements

Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive HZ jack.
Turn the rotary switch to the Hz position.
Touch the test probes to the circuit or under test and read the frequency or duty cycle on the display.

Temperature Measurements

WARNING: To avoid electric shock, disconnect test leads from any source of voltage before making a temperature measurement. Be sure that the thermocouple has been removed before changing to any other measurement function.

Insert the type K thermocouple probe into the Temp and COM jacks.
Turn the rotary switch to the oF or oC position.
Read the temperature on the display.

Continuity Measurements

Insert the black test lead banana plug into the negative COM jack and the red test lead banana plug into the positive V/Ω/mA jack. Observe polarity.
Turn the rotary switch to the position.
Touch the test probes to the circuit or device under test. If the resistance is less than approximately 30Ω the buzzer will sound.

Diode Measurements

Insert the black test lead banana plug into the negative COM jack and
the red test lead banana plug into the positive V/Ω/mA jack.
Turn the rotary switch to the position.
Touch the test probes to the diode under test. Forward voltage will indicate 0.4V to 0.7V. Reverse voltage will indicate “OL”. Shorted devices will indicate near 0mV and an open device will indicate “OL” in both polarities.

Data Hold

Press the Hold button to freeze the reading in the display. “H” will appear in the LCD. Press the key again to release the display.

Low Battery

If the low battery icon appears in the display, replace the batteries to maintain proper operation.

Auto-Ranging

The meter will auto range to the optimum range to provide the best resolution and accuracy for the input signal.

Auto Power Off

This meter will automatically shut off after approximately 15 minutes of operation. If the meter shuts off, rotate the function switch to OFF and on again (or press the HOLD button) to resume operation.
To disable the auto power off, hold the SELECT button while turning power on or press the SELECT button after auto power off has turned the meter off.

Maintenance

WARNING: To avoid electric shock, disconnect the test leads from any source of voltage before removing the battery/fuse cover.

WARNING: To avoid electric shock, do not operate your meter until the battery/fuse cover is in place and fastened securely.

This Multimeter is designed to provide years of dependable service, if the following care instructions are performed.

Keep the meter dry.
Use and store the meter in mild ambient conditions. Temperature extremes can shorten the life of the electronic parts and distort or melt plastic parts.
Handle the meter gently. Dropping it can damage the electronic parts or the case.
Keep the meter clean. Wipe the case occasionally with a damp cloth. DO NOT use chemicals, cleaning solvents or detergents.
Use only fresh batteries of the recommended size and type. Remove old or weak batteries so they do not leak and damage the unit.
If the meter is to be stored for a long period of time, the batteries.

UL LISTED

The UL mark does not indicate that this product has been evaluated for the accuracy of its readings.

Battery and Fuse Replacement

WARNING: To avoid electric shock, disconnect the test leads from any source of voltage before removing the battery/fuse cover.

Disconnect the test leads from the meter.
Remove the rubber holster (if in place).
Remove the two screws securing the rear cover using a Phillips head screwdriver.
Batteries:
Lift the cover off and replace the batteries observing the correct polarity. Insert the new batteries into the battery holder.
Fuse:
Remove the old fuse by gently pulling up on it. Install the new fuse by gently pushing it into the holder. Always use a fuse of the proper size and value; 250mA/250V fast blow.
Replace the rear cover and secure with the screws.

Specifications

Accuracy: Stated at 73oF ±10oF (23oC ±5 oC) and less than 70% RH
Diode Test: Test current of 0.6mA maximum, open circuit voltage 1.5V DC typical
Continuity Check: Audible signal will sound if the resistance is less than approximately <8Ω
Temperature sensor: Requires type K thermocouple
Input Impedance : 10MΩ (V AC/DC)
Display: 3999 count LCD
Overrange: “OL” is displayed
Polarity: Automatic (no indication for positive polarity); Minus (-) sign for negative polarity.
Measurement Rate: 3 times per second, nominal
Low Battery: “ ” is displayed if battery voltage drops below operating voltage
Batteries: Requires (2) AAA batteries
Fuses: mA range; 250mA/250V fast blow 10A range, no protection
Operating Temp: 32oF to 104oF (0oC to 40oC)
Storage Temp: -4 oF to 140oF (-20oC to 60oC)
Relative Humidity: Maximum relative humidity 80% for temperatures up to 31°C decreasing linearly to 50% relative humidity at 40°C.
Operating Altitude: 7000ft (2000 meters) maximum
Weight: 5.4 oz. (153g).
Size: 5.43” x 2.83” x 1.5” (138mm x 72mm x 38mm)
Safety: For indoor use and in accordance with Overvoltage Category II, Pollution Degree 2. Category II includes local level, appliance, portable equipment, etc., with transient overvoltages less than Overvoltage Category III

Two-year Warranty

FLIR Systems, Inc. warrants this Extech brand instrument to be free of defects in parts and workmanship for two years from date of shipment (a six-month limited warranty applies to sensors and cables).
To view the full warranty text please visit: http://www.extech.com/support/warranties.

Calibration and Repair Services

FLIR Systems, Inc. offers calibration and repair services for the Extech brand products we sell. We offer NIST traceable calibration for most of our products. Contact us for information on calibration and repair availability, refer to the contact information below. Annual calibration should be performed to verify meter performance and accuracy. Product specifications are subject to change without notice. Please visit our website for the most up-to-date product information: www.extech.com.