MASTECH M266F Digital Clamp Meter

Quick Start Guide

SKU Number: M266FCBGLO

WARNING: Special attention must be paid when using this test and measurement instrument. Improper usage may cause electric shock and damage the equipment.

Contact Information

EMEA

MGL EUMAN S.L.

C/ Picu Castiellu, Parcelas i1-i4 33163, Argame Morcín, Asturias, Spain

Tel: +34 985-08-18-70

Email: cs.emea@mgl-intl.com

USA

MGL AMERICA, INC.

2810 Coliseum Centre Drive, Ste. 100 Charlotte, North Carolina 28217 USA

Tel: +1 833-533-5899

Email: cs.na@mgl-intl.com

UNITED KINGDOM

MGL GROUP U.K. LIMITED

14 Weller St, London, SE1 1QU, UK

Tel: +34 985-08-18-70

Email: cs.uk@mgl-intl.com

APAC

MGL APPA Corporation

Flat 4-1, 4/F, No. 35, Section 3 Minquan East Road, Taipei, Taiwan.

Tel: +886 2-2508-0877

Email: cs.apac@mgl-intl.com

MEXICO & LATAM

MGL LATAM S.A DE CV

Colonia Industrial Vallejo Del. Azcapotzalco 02300, Mexico D.F

Tel: +1 833-533-5899

Email: cs.latam@mgl-intl.com

Specifications

RangeResolutionAccuracy
V~ (AC Voltage)
200V0.1V±(1.0%+5)
750V1V±(1.2%+5)
V (DC Voltage)
2V/20V/200V1mV/10mV/0.1V±(0.5%+3)
1000V1V±(0.8%+3)
A~ (AC Current)
200A0.1A±(2.5%+5)
1000A1A±(3.0%+10)
R (Resistance)
200Ω0.1Ω±(1.0%+5)
2kΩ±(1.0%+8)
20kΩ10Ω±(1.0%+8)
200kΩ0.1kΩ±(1.0%+8)
2MΩ1kΩ±(1.0%+8)
Hz (Frequency)
2kHz1Hz±(2.0%+5)

Measurement Instructions

AC Current (A~) Measurement

1. Open the jaws of the clamp meter and place them around the conductor carrying the current to be measured. ?️

2. Turn the rotary switch to the 'A~' position.

3. Insert the black test lead into the 'COM' jack and the red test lead into the 'A-' jack.

4. Read the measured current value on the display. Example: 5.68 A.

AC Voltage (V~) Measurement

1. Turn the rotary switch to the 'V~' position.

2. Insert the black test lead into the 'COM' jack and the red test lead into the 'V' jack.

3. Connect the other ends of the test leads to the AC voltage source. Ensure correct polarity: red lead to positive (+), black lead to negative (-).

4. Read the measured AC voltage on the display. Example: 220 V.

DC Voltage (V) Measurement

1. Turn the rotary switch to the 'V' position.

2. Insert the black test lead into the 'COM' jack and the red test lead into the 'V' jack.

3. Connect the other ends of the test leads to the DC voltage source. Ensure correct polarity: red lead to positive (+), black lead to negative (-).

4. Read the measured DC voltage on the display. Example: 12.57 V.

Resistance (Ω) Measurement

1. Turn the rotary switch to the 'Ω' position.

2. Insert the black test lead into the 'COM' jack and the red test lead into the 'V/Ω' jack.

3. Connect the test leads across the component or circuit to measure resistance. The device will beep for continuity if resistance is below approximately 100Ω. ?

4. Read the measured resistance on the display. Example: 500 Ω.

Frequency (Hz) Measurement

1. Turn the rotary switch to the 'Hz' position.

2. Insert the black test lead into the 'COM' jack and the red test lead into the 'V/Ω' jack.

3. Connect the test leads to the signal source for frequency measurement.

4. Read the measured frequency on the display. Example: 60 Hz.

Product Information

Certifications: CAT II 1000V, CAT III 600V

Warranty: 1 YEAR LIMITED WARRANTY

Compliance: CE, EAC, Intertek

Document Revision: 700019175 May 2021 Rev. 1

Specifications are subject to change without notification.

Models: M266F, Digital Clamp Meter

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