User’s Manual
MiniTec
TM
Series
Model MN26
(Model MN26T includes temperature probe)
Mini Autoranging MultiMeter
Introduction
Congratulations on your purchase of Extech’s MN26 Autoranging Multimeter. This meter
measures AC/DC Voltage, AC/DC Current, Resistance, Capacitance, Frequency, Duty Cycle,
Temperature, Diode Test and Continuity. Proper use and care of this meter will provide many
years of reliable service.
Safety
International Safety Symbols
This symbol, adjacent to another symbol or terminal, indicates the user must
refer to the manual for further information.
This symbol, adjacent to a terminal, indicates that, under normal use,
hazardous voltages may be present
Double insulation
Safety Precautions
1. Improper use of this meter can cause damage, shock, injury or death. Read and
understand this user manual before operating the meter.
2. Make sure any covers or battery doors are properly closed and secured.
3. Always remove the test leads before replacing the battery or fuses.
4. Inspect the condition of the test leads and the meter itself for any damage before
operating the meter. Repair any damage before use.
5. Do not exceed the maximum rated input limits.
6. Use great care when making measurements if the voltages are greater than 25VAC
rms or 35VDC. These voltages are considered a shock hazard.
7. Always discharge capacitors and remove power from the device under test before
performing Capacitance, Diode, Resistance or Continuity tests.
8. Remove the battery from the meter if the meter is to be stored for long periods.
9. To avoid electric shock, do not measure AC current on any circuit whose voltage
exceeds 250V AC.
10. Voltage checks on electrical outlets can be difficult and misleading because of the
uncertainty of connection to the electrical contacts. Other means should be used to
ensure that the terminals are not "live".
Specifications
Function
DC Voltage
(V DC)
Range
400mV
4V
40V
400V
600V
400mV
4V
40V
400V
600V
400µA
4000µA
40mA
400mA
10A
Resolution
0.1mV
0.001V
0.01V
0.1V
1V
0.1mV
0.001V
0.01V
0.1V
1V
0.1µA
1µA
0.01mA
0.1mA
0.01A
2
Accuracy
±(0.5%
reading + 2 digits)
±(1.0%
reading + 2 digits)
±(1.5%
reading + 2 digits)
±(2.0%
reading + 30 digits)
±(1.5%
reading + 3 digits)
±(2.0%
reading + 4 digits)
±(1.5%
reading + 3 digits)
AC Voltage
(V AC)
(40 - 400Hz)
(40 - 200Hz for
400mV, 4V ranges)
DC Current
(A DC)
±(2.5%
reading + 5 digits)
MN26T
V4.0 05/05
Function
AC Current
(A AC)
(40 - 400Hz)
(40 - 200Hz for
400µA, 4mA
ranges)
Resistance
Range
400µA
4000µA
40mA
400mA
10A
Resolution
0.1µA
1µA
0.01mA
0.1mA
0.01A
Accuracy
±(1.8%
reading + 5 digits)
±(3.0%
reading + 7 digits)
Capacitance
Frequency
Duty Cycle
Temp
°F
Temp
°C
400Ω
0.1Ω
±(1.2%
reading + 4 digits)
±(1.2%
reading + 2 digits)
4kΩ
0.001kΩ
40kΩ
0.01kΩ
400kΩ
0.1kΩ
4MΩ
0.001MΩ
40MΩ
0.01MΩ
±(2.0%
reading + 3 digits)
4nF
0.001nF
±(5.0%
reading + 10digits)
40nF
0.01nF
±(5.0%
reading + 7 digits)
400nF
0.1nF
±(3.5%
reading + 5 digits)
4µF
0.001µF
40µF
0.01µF
200µF
0.1µF
±(5.0%
reading + 5 digits)
9.999Hz
0.001Hz
±(1.5%
reading + 5 digits)
99.99Hz
0.01Hz
999.9Hz
0.1Hz
±(1.2%
reading + 2 digits)
9.999kHz
0.001kHz
99.99kHz
0.01kHz
999.9kHz
0.1kHz
9.999MHz
0.001MHz
±(1.5%
reading + 4 digits)
Sensitivity: 0.8V rms min. @ 20% to 80% duty cycle and <100kHz;
5Vrms min @ 20% to 80% duty cycle and > 100kHz.
0.1 to 99.9%
0.1%
±(1.2%
reading + 2 digits)
Pulse width: 100µs - 100ms
-4 to 1400°F*
1°F
±(3.0%
reading + 3 digits)
(probe effect additional)
-20 to 760°C*
1°C
o
o
o
o
NOTE:
Accuracy is stated at 65 F to 83 F (18 C to 28 C) and less than 70% RH.
NOTE:
Temperature range of the temperature probe may be less than the range of the
meter.
Input Limits
Function
Maximum Input
V DC, VAC
600V DC/AC
Ohms, Capacitance, Diode, Frequency,
250V DC/AC
Continuity
mA DC/AC
400mA DC/AC
10A DC/AC
10A DC/AC (30sec. max)
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MN26T
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Diode Test
Continuity Check
Input Impedance
Display
Overrange indication
Polarity
Measurement Rate
Auto Power Off
Low Battery Indication
Batteries
Fuses
Operating Temperature
Storage Temperature
Relative Humidity
Operating Altitude
Weight
Size
Safety
Test current of 0.3mA maximum, open circuit voltage 1.5V DC
typical
Audible signal will sound if the resistance is less than
approximately 30Ω, test current <0.7mA
7.5MΩ (VDC and VAC)
4000 count LCD
“OL” is displayed
Automatic (no indication for positive polarity); Minus (-) sign for
negative polarity.
2 times per second, nominal
Meter automatically shuts down after 15 minutes of inactivity
“BAT”
is displayed
Requires two AAA batteries
mA,
µA
ranges, 0.5A/250V fast blow
10A range, 10A/250V fast blow
o
o
o
o
32 F to 122 F (0 C to 50 C)
o
o
o
o
-4 F to 140 F (-20 C to 60 C)
<70% operating, <80% storage
7000ft (2000 meters) maximum.
9.17 oz. (260g).
4.78” x 2.38” x 1.57” (121.5mm x 60.6mm x 40mm)
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.
Meter Description
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
LCD Display
Function switch
Function key
Range key
Temperature jack
COM jack
10A jack
Positive jack
Relative key
Data Hold key
1
4
3
2
5
6
7
10
9
8
Note:
Tilt stand, fuse and battery compartment are on rear of unit.
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V4.0 05/05
Symbols
AC (alternating current or
voltage)
DC (direct current or voltage)
Continuity
Diode test
millivolt, volt (voltage)
ohm, kilohm, megohm
(resistance)
microamp, milliamp, Amp
(current)
pF, nF, uF
Hz kHz
%
O
O
F, C
AUTO
BAT
HOLD
REL
picofarad, nanofarad,
microfarad (capacitance)
hertz, kilohertz (frequency)
% duty cycle
Degrees Fahrenheit,
Centigrade (temperature)
Autorange
Low battery
Display hold
Relative
•)))
mV, V
Ω,
kΩ, MΩ
uA, mA, A
Operating Instructions
AC or DC Voltage Measurements
1. Insert the black test lead banana plug into the negative
COM
jack and the red test
lead banana plug into the positive
V
jack.
2. Turn the rotary switch to the
VAC
or
VDC
position.
3. Touch the test probes to the circuit under test and read the voltage on the display.
AC or DC Current Measurements
CAUTION:
Do not make current measurements on the 10A scale for longer than 30
seconds followed by a 15 minute cool down period. Exceeding 30 seconds may cause
damage to the meter and/or the test leads.
Insert the black test lead banana plug into the negative
COM
jack and the red test
lead banana plug into the;
a. Positive
uA/mA
jack for currents to 400mA
b. Positive
10A
jack for currents to 10A
2. Turn the rotary switch to the
uA, mA
or
A
position.
3. Touch the test probes in series with the circuit under test and read the current on the
display.
Resistance Measurements
1. Insert the black test lead banana plug into the negative
COM
jack and the red test
lead banana plug into the positive
Ω
jack.
2. Turn the rotary switch to the
Ω
position.
3. Touch the test probes to the circuit or device under test and read the resistance on
the display.
1.
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MN26T
V4.0 05/05
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