Extech MN26T Operating Manual

User’s Manual

MiniTecTM 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

Safety Precautions

1. Improper use of this meter can cause damage, shock, injury or death. Read and

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

5. Do not exceed the maximum rated input limits.

6. Use great care when making measurements if the voltages are greater than 25VAC

7. Always discharge capacitors and remove power from the device under test before

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

10. Voltage checks on electrical outlets can be difficult and misleading because of the

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

understand this user manual before operating the meter.

operating the meter. Repair any damage before use.

rms or 35VDC. These voltages are considered a shock hazard.
performing Capacitance, Diode, Resistance or Continuity tests.

exceeds 250V AC.
uncertainty of connection to the electrical contacts. Other means should be used to

ensure that the terminals are not "live".

Specifications

Function Range Resolution Accuracy
DC Voltage
(V DC)

AC Voltage
(V AC)
(40 - 400Hz)
(40 - 200Hz for
400mV, 4V ranges)

DC Current
(A DC)

400mV 0.1mV
4V 0.001V
40V 0.01V
400V 0.1V
600V 1V
400mV 0.1mV
4V 0.001V
40V 0.01V
400V 0.1V
600V 1V
400µA 0.1µA
4000µA 1µA
40mA 0.01mA
400mA 0.1mA
10A 0.01A

±(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)

±(2.5% reading + 5 digits)

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MN26T V4.0 05/05

Function Range Resolution Accuracy
AC Current
(A AC)
(40 - 400Hz)
(40 - 200Hz for
400µA, 4mA
ranges)
Resistance

Capacitance

Frequency

Duty Cycle 0.1 to 99.9% 0.1%

Temp °F -4 to 1400°F* 1°F
Temp °C -20 to 760°C* 1°C

NOTE: Accuracy is stated at 65oF to 83oF (18oC to 28oC) and less than 70% RH.
NOTE: Temperature range of the temperature probe may be less than the range of the

meter.

Function Maximum Input
V DC, VAC 600V DC/AC
Ohms, Capacitance, Diode, Frequency,
Continuity
mA DC/AC 400mA DC/AC
10A DC/AC 10A DC/AC (30sec. max)

400µA 0.1µA
4000µA 1µA
40mA 0.01mA
400mA 0.1mA
10A 0.01A

400Ω 0.1Ω ±(1.2% reading + 4 digits)
4kΩ 0.001kΩ
40kΩ 0.01kΩ
400kΩ 0.1kΩ
4MΩ 0.001MΩ
40MΩ 0.01MΩ ±(2.0% reading + 3 digits)
4nF 0.001nF
40nF 0.01nF
400nF 0.1nF
4µF 0.001µF
40µF 0.01µF
200µF 0.1µF ±(5.0% reading + 5 digits)

9.999Hz 0.001Hz

99.99Hz 0.01Hz

999.9Hz 0.1Hz

9.999kHz 0.001kHz

99.99kHz 0.01kHz

999.9kHz 0.1kHz

9.999MHz 0.001MHz
Sensitivity: 0.8V rms min. @ 20% to 80% duty cycle and <100kHz;

5Vrms min @ 20% to 80% duty cycle and > 100kHz.

Input Limits

±(1.8% reading + 5 digits)

±(3.0% reading + 7 digits)

±(1.2% reading + 2 digits)

±(5.0% reading + 10digits)
±(5.0% reading + 7 digits)
±(3.5% reading + 5 digits)

±(1.5% reading + 5 digits)
±(1.2% reading + 2 digits)

±(1.5% reading + 4 digits)

±(1.2% reading + 2 digits)
Pulse width: 100µs - 100ms
±(3.0% reading + 3 digits)

(probe effect additional)

250V DC/AC

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MN26T V4.0 05/05