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Digital Multimeter MS8251B

Digital smart device for measurement of AC / DC current and voltage, resistance, frequency and continuity.
BGN154.00 VAT Incl
Product code: MS8251B
Warranty: 24 months
Presentation
Mastech MS8251B is a portable handheld multifunctional digital device used to measure AC/DC current and voltage, electrical resistance, capacitance and frequency. This multipurpose measuring instrument has myriad applications in a plethora of industries and environments.
Briefly about the product
MS8251B
1x9V 6F22
175x85x52mm
420 g
CE / ETL / RoHS
CAT III 1000V / CAT IV 600V
Accessories included
Test Leads
K type thermocouple
Carry bag
Multi-Function Socket
Battery and User's manual
Certificates
CAT III 1000V CAT IV 600V CE certification ETL certicfication RoHS
Range of measurements
Specifications
Range
Resolution
Accuracy
DC Voltage
660mV
6.6V/66V/660V
1000V
0.1mV
1mV/10mV/0.1V
1V
±(0.8%+3)
±(0.5%+5)
±(0.8%+3)
AC Voltage
660mV(40~60Hz)
6.6V/66V(40~400Hz)
660V/1000V(40~400Hz)
0.1mV
1mV/10mV
0.1V/1V
±(1.5%+5)
±(1.2%+5)
±(1.0%+3)
DC Current
660μA/6600μA/66mA/660mA
10A
0.1μA/1μA/10μA/0.1mA
10mA
±(1.0%+5)
±(2.0%+5)
AC Current
660μA/6600μA/66mA/660mA
10A
0.1μA/1μA/10μA/0.1mA
10mA
±(1.5%+5)
±(3.0%+5)
Resistance
660Ω/6.6kΩ/66kΩ/660kΩ/6.6MΩ
66MΩ
0.1Ω/1Ω/10Ω/100Ω/1kΩ
0.1MΩ
±(0.8%+5)
±(1.5%+5)
Capacitance
6.6nF
66nF/660nF/6.6μF/66μF/660μF
6.6mF/66mF
1pF
10pF/0.1nF/1nF/10nF/0.1μF
1μF/10μF
±(4.0%+5)
±(3.0%+3)
±(4.0%+5)
Frequency
66Hz/660Hz/6.6kHz/66kHz/
660kHz/6.6MHz/66MHz
0.01Hz/0.1Hz/1Hz/10Hz
0.1kHz/1kHz/10kHz
±(1.5%+5)
Frequency (V)
66Hz/660Hz/6.6kHz/10kHz
0.01Hz/0.1Hz/1Hz/10Hz
±(1.5%+5)
Duty Cycle
1%~99.9%
0.1%
±2.0%
Temperature
0~1000℃/32~1832℉
1℃/1℉
±(1.0%+3)
Features
Display
counts
6600
Autoranging
Auto & Manual
Yes
APO
Auto Power Off
Yes
REL
Relative Measurement
Yes
Diode
Open Voltage
3.2V
Continuity Buzzer
<50Ω
Yes
Data Hold
Yes
NCV
Non-Contact Voltage Detector
Yes
MAX / MIN
Yes
True RMS
True Root Mean Square
Yes
Low Z
Low Impedance Input Mode
Yes
LBD
Low Battery Display
Yes
Display Backlight
Yes
Applicability
  • Easy to use hobby
  • Automatic recognition of the measured parameters
  • For precise and accurate measurement of values
Working specifications
Voltage (V)
Voltage(symbol: V), also called electromotive force, is a quantitative expression of the potential difference in charge between two points in an electrical field.
Current ( I )
An electric current is a flow of electric charge. The common symbol for current is the uppercase letter I. The SI unit for measuring an electric current is the ampere(A), which is the flow of electric charge across a surface at the rate of one coulomb per second. The particles that carry the charge in an electric current are called charge carriers.
Resistance (R)
Resistance is the opposition that a substance offers to the flow of electric current. It is represented by the uppercase letter R. The standard unit of resistance is the ohm(Ω)
Buzzer
In electronics, a continuity test is the checking of an electric circuit to see if current flows . A continuity test is performed by placing a small voltage across the chosen path. If electron flow is inhibited by broken conductors, damaged components, or excessive resistance, the circuit is "open".
Diode
A diode is a specialized electronic component with two electrodes called the anode and the cathode. Most diodes are made with semiconductor materials such as silicon, germanium, or selenium. The fundamental property of a diode is its tendency to conduct electric current in only one direction. When the cathode is negatively charged relative to the anode at a voltage greater than a certain minimum called forward breakover, then current flows through the diode. If the cathode is positive with respect to the anode, is at the same voltage as the anode, or is negative by an amount less than the forward breakover voltage, then the diode does not conduct current. This is a simplistic view, but is true for diodes operating as rectifiers, switches, and limiters. The forward breakover voltage is approximately six tenths of a volt (0.6 V) for silicon devices, 0.3 V for germanium devices, and 1 V for selenium devices.
Autoranging
Automatic switching of a multirange meter from its lowest to the next higher range, with the switching process repeated until a range is reached for which the full-scale value is not exceeded. Automatic switching of a multirange meter from its lowest to the next higher range, with the switching process repeated until a range is reached for which the full-scale value is not exceeded.
Auto Power Off
Auto Power Off function shutting down the device after a certain inactivity time.
Display Backlight
Rear screen illumination is an important advantage for any device that owns it. Thanks to it, the visibility and legibility of the screen is increased, thus the device is much more subtle and reliable in small ambient light and long-term use.
Duty Cycle
Duty cycle is the proportion of time during which a component, device, or system is operated. The duty cycle can be expressed as a ratio or as a percentage. Suppose a disk drive operates for 1 second, then is shut off for 99 seconds, then is run for 1 second again, and so on. The drive runs for one out of 100 seconds or 1/100 of the time, and its duty cycle is therefore 1/100, or 1 percent.
Low Battery
The indication for low battery level is a useful feature and alert the user when needed battery unit to be changed. So you will still have a functioning device for use.
Data Hold
Data hold function is useful when measurements occur. So when pressing the "HOLD" button you will hold the display information.
Temperature (°F/°C)
Temperature measurement is done in degrees (°). The unit of measurement adopted by SI is Celsius (° C), but it can also be measured in Fahrenheit (° F). The freezing point of 0 °C = 32 °F and the boiling point 100 °C = 212 °F.
NCV
Non contact voltage, NCV tester is a useful tool for any kind of electrical work - there is no quicker or simpler way to safely check for electrical current in a wire, outlet, switch or an old lamp that has mysteriously stopped working.
MAX/MIN
Press the MAX/MIN key to show the maxinum reading value among measuring data, and the “MAX”symbol appears on the display. Press the button again, the “MIN” symbol appears on the display and will show the minimum reading value among measuring data, press the button again to return to normal mode.
Ralative Measurement
Function to display a relative measurement value.
TRMS
True Root Mean Square
Low-Z (Dual Impedance Characteristics)
Normal impedance(10M) with normal testing capabilities. Low impedance Lo-Z for testing where “ ghost voltage” may be present. lf this possibility exists,or when testing for the presence of voltage,use the Lo-Z mode to switch to the low impedance setting to remove the ghost voltages during measurement.
Brochures and instructions
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