Prokit's Industries MT-3120 - Manual (Page 3)

2A Mini Autorange Clamp Meter user manual
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⒂ Rear Case
⒃ Fixing Screw Of The Battery Cover
⒄ Battery Cover
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2.2 SWITCH, BUTTONS AND INPUT JACKS
Button - For control backlight
SEL Button - For switching among measuring functions
MAX Button - For switching maximum value measurement
RAN Button - For switching between auto and manual ranges
HOLD Button - For holding the reading
INPUT Jack - For measuring voltage, resistance, diode and continuity.
COM Jack - Common input connection for current, voltage, resistance, diode
and continuity measurement.
OFF Position - For turning off the power.
Rotary Selector - For selecting functions and ranges.
Clamp - For measuring current
2.3 LCD (Liquid-crystal display)
m
Alternating current
Direct current
Diode test
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Continuity buzzer
AUTO Auto range mode
MANU Manual range mode
MAX The maximum value is being measure
Battery low
H This indicates that the display data is being held.
mV, V Milli-volts, Volts (Voltage)
A Amperes (Current)
Ω, kΩ, MΩ Ohms, Kilo-ohms, Mega-ohms (Resistance)
3. SPECIFICATIONS
Calibration is required once a year, to be carried out at a temperature between
18°C and 28 °C (64 °F to 82°F) and relative humidity below 75%.
3.1 GENERAL SPECIFICATIONS
3.1.1 Auto range and manual range options are available.
3.1.2 Over range protection is provided for all ranges.
3.1.3 Maximum voltage between terminals and earth ground: 600V DC or rms
AC
3.1.4 Operating altitude: max. 2000 meters (7000 ft.)
3.1.5 Display: LCD
3.1.6 Maximum value display: 1999 digits
3.1.7 Polarity indication: automatic; ‘-‘ for negative polarity.
3.1.8 Over range indication: ‘0L’ or ‘-0L’
3.1.9 Sampling Time: approx. 0.4 second per sample
3.1.10 Unit indication: function and unit.
3.1.11 Auto power off time: 15 min.
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3.1.12 Operating power : 1.5V×3 AAA batteries
3.1.13 Battery low indication: ‘ ’ on LCD
3.1.14 Temperature factor: < 0.1×Accuracy /℃
3.1.15 Operating temperature: 0 ℃ to 40℃（32 °F to 104°F）
3.1.16 Storage temperature: -10 to 50 ℃ ℃（ 10 °F to 122°F）
3.1.17 Dimension: 208Ч78Ч35mm
3.1.18 Weight: approximate 340g（including batteries）
3.2 ELECTRICAL SPECIFICATIONS
Ambient temperature: 23 ±5 Relative ℃ humidity: < 75%
3.2.1 AC Current
Range Resolution Accuracy
±（3.5% of rdg +20 digits）≤0.5A 2A 0.001A
±（3.0% of rdg + 10 digits）
20A 0.01A ±（3.0% of rdg + 10 digits）
200A 0.1A ±（2.5% of rdg + 10 digits）
600A 1A ±（1.5% of rdg + 5 digits）
- Max. input current: 600A
- Frequency range: 50 to 60Hz
- Response: average, calibrated in rms of sine wave
3.2.2 AC Voltage
Range Resolution Accuracy
2V 0.001V
20V 0.01V ±(1.0% of rdg + 5digits)
200V 0.1V
600V 1V ±(1.2% of rdg + 5digits)