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Summary of Contents for Mastech MS2140A
- Page 1 MS2140A Dual display digital clamp meter CAT lll 600V CAT ll 1000V 600A MS2140A T-RMS Inrush Ω TEMP ZERO μA Press 2Sec FUNC HOLD INRUSH RANGE TRMS AutoRange RELINP MAX MIN °C% °F AUTO µmVA nµmF MkΩHz Temp μAHz ΩV...
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Page 2: Table Of Contents
CONTENTS CONTENTS 1. Safety Information......1 ZERO/REL ..........17 INRUSH ...........18 1.1 Preparation..........1 Auto Power Off ..........18 1.2 Usage............2 Measuring Preperation ......18 Safety symbols on the meter .....3 4.10 Current Measurement ......19 1.4 Maintenance..........4 4.11 Voltage Measurement ......19 Features and Components ....4 4.12 Frequency and Duty Cycle ......20... -
Page 3: Safety Information
1. Safety Information 1.2 Usage 1.2.1 Turn the rotary switch to the required function WARNING and range to be measured. 1.2.2 Never use the meter to measure voltages that TO REDUCE THE RISK OF FIRE, ELECTRICAL might exceed 600V DC/AC above earth ground. SHOCK, PRODUCT DAMAGE OR PERSONAL 1.2.3 Always be careful when working with voltages INJURY, PLEASE FOLLOW THE SAFETY... -
Page 4: Safety Symbols On The Meter
1.2.13 Avoid direct sunlight, exposing batteries to 1.4 Maintenance humidity, any strong magnetic field, or high 1.4.1 To avoid electric shock or personal injury, repairs temperatures to ensure the extended life of or servicing not covered in this manual should be the meter. -
Page 5: Components
(1) Non-Contact Voltage detection sensor (2)NCV indicator (3)Work light (4)Rotary Switch (5)Function buttons (6)Input sockets (7)Clamp trigger (8)Clamp: for current measurement CAT lll 600V CAT ll 1000V 600A MS2140A T-RMS Inrush Ω TEMP ZERO μA Press 2Sec FUNC HOLD INRUSH... -
Page 6: Buttons And Switches
2.2 Buttons and switches AC/DC /RANGE button: backlight/switch ranges in Diode, Continuity manual mode Auto-range AUTO FUNC button: switch measurement functions Maximum/Minimum display MAX /MIN HOLD button: hold reading on screen Inrush REL/ZERO button: relative reading/DC zero offset INRUSH button: measure Inrush current Relative measurement mode MAX/MIN button: switch between max/min readings Auto Power Off... -
Page 7: Specification
3.2 Technical Specifications 3. Specifications 3.2.1 True RMS Characteristics The Meter should be calibrated annually between 3.2.1.1 For non-sinusoidal signal measurements, 18°C ~ 28°C and a relative humidity less than 75%. true RMS is a more accurate method of 3.1 General Specifications measurement over the averaging method. - Page 8 3.2.5 DC Voltage Note: At small voltage ranges, unsteady readings will appear Range Accuracy Resolution before the test leads make contact with the circuit. 600mV 0.1mV This is normal since the Meter is highly sensitive. When the test leads are connected to the circuit, the 0.001V true reading will be shown.
- Page 9 3.2.7.3 Frequency Through “HZ” Mode: 3.2.10 Continuity Range Accuracy Range Accuracy Resolution Resolution 60Hz 0.01Hz The Meter will beep if 600Hz 0.1Hz 0.1Ω measurement is less than 50 6kHz ±(0.3% of reading + 5 digits) 60kHz 0.01kHz - Overload protection: 250V DC or AC (RMS) 600kHZ 0.1kHZ - Open circuit voltage: about 3V...
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Page 10: Operations Guide
3.2.13 Temperature 4. Operations Guide Range Accuracy 4.1 Display Hold Resolution During measuring, press the “HOLD” button once to -10°C~500°C ±1.0% of reading + 0.8°C hold the reading, press again to release hold. (±1.0% of reading + 0.8°F) (-14°F to 932°F) 0.1°C/ 4.2 Manual Measurement 0.2°F... -
Page 11: Maximum/Minimum Recording
4.4 Maximum/Minimum recording 4.7 INRUSH When in AC Current measurement mode, press the 1) Press “MAX/MIN” button once to display the “INRUSH” button to enter surge current measurement maximum measurement and press “MAX/MIN” button again to display the minimum, press mode. -
Page 12: Current Measurement
4.10 Current Measurement Note: 1) When measuring low voltage source, the meter 1) For AC current move rotary switch to A~ position; When measuring low voltage sources, the reading for DC current move rotary switch to A position. will fluctuate on the display when the test leads are 2) Open the clamp head by pressing the trigger and not connected to the circuit. -
Page 13: Diode Test
Note: Note: 1) When the circuit is an open circuit, the Meter displays The Meter displays “OL” if the circuit is open or “OL” for overload. resistance is larger than 600Ω. 2) For measurements above 1MΩ, the meter will take a few seconds to stabilize the reading;... -
Page 14: Temperature
4.18 Temperature 2) Push the “RANGE” button to adjust the NCV sensitivity from 0-4. '4' is the highest sensitivity 1) Turn rotary switch to “TEMP” position. where '0' will turn off the NCV functionality. 2) Insert K-type thermocouple into the multi-function 3) Push the “HOLD”... -
Page 15: Test Leads Replacement
1) If “ ”symbol appears, this indicated batteries should be replaced. 2) Unscrew the instrument's battery cover and remove it 3) Replace batteries 4) Replace the battery cover and tighten screws Note: Be sure to note the battery polarity when replacing. 5.2 Test Leads Replacement WARNING REPLACE THE TEST LEADS WITH IDENTICAL...
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