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Mastech MS8251C Operation Manual page 8

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3.2.10 DC Current
range
Resolution Accuracy
400 A
µ
0.1µA
4000 A
µ
1µA
10µA
40mA
100µA
400mA
10A
10mA
Overload protection:
µA and mA
position
: Fuse FF600mA/1000V,
A position
: Fuse FF10A/1000V.
When the target current is larger than 5A, do not continue
measurement for more than 10 sec. Pause for 1 minute
after the measuring.
3.2.11 AC Current
range
Resolution Accuracy
400µA
0.1µA
4000µA
1µA
10µA
40mA
100µA
400mA
10A
10mA
Overload protection:
µA and mA grade: Fuse FF600mA/1000V,
A
position
: Fuse FF10A/1000V.
- Frequency range: 40 ~ 400Hz
- Response: True RMS
When the target current is larger than 5A, do not continue
measurement for more than 10 sec. Pause for 1 minute
after the measuring.
±(1.0% reading + 5 digits)
±(2.0% reading + 5 digits)
±(1.5% reading + 5 digits)
±(3.0% reading + 5 digits)
13
3.2.12 Temperature
Range
Input
Ambient Temp ±2 digits
0~1000°C 400°C
1000°C
Ambient Temp ±2 digits
32~1832°F
800°F
1800°F
4.
Using the Meter
4.1 Data Hold
4.1.1 During a measurement, press the "HOLD" button
once to hold the reading.
4.1.2 Press "HOLD" again to release the hold.
4.2 Manual Range
4.2.1
In voltage, current, resistance and capacitance
modes, the default range is "AUTO"
4.2.2 Press "RANGE" to enter manual ranging.Each
press switches to a higher range.Pressing the
button at the highest range will return to the lowest
range.
4.2.3 Hold "RANGE" to return to "AUTO"
4.2.4 Pressing "RANGE" in Max/Min mode will return the
meter to normal reading.
Note:
Manual range is disabled in frequency mode.
4.3 Relative Measurement
4.3.1
Press "REL
to enter relative measurement. This
will store the reading when pressed and display the
difference between current reading and the stored
reading.
4.3.2 Press "REL
" again to return to normal.
Test Range Accuracy
±4 digits
±5 digits
±(1.0% of reading
+3 digits)
±4 digits
±20 digits
14

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