APPLICATION
Easy for holding according to the best design to fit human body engineering, with the optimum inclined view angle
YF-78
LCR Multimeter
To measure DC voltage, AC voltage, DC current, AC current, resistance, frequency (auto Ranging), diode, Continuity test, inductiance, capacitance, transistor (hFE) value.
FEATURES
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Core magnet movement:
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Avoids interruption of external magnetic field.
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Double protection device:
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Diode to protect movement，fuse to protect parts of circuit board.
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Handy stand attached，with wide visual for easy readout.
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With DC 12A measuring range.
SPECIFICATIONS
- Display unit: 3½digits LCD, with a maximum reading of 1999, units. decimal point and symbol display.
- Polarity Indication: when negative value input, automatic display the symbol “-“.
- Zero reset adjustment: automatic zero reset.
- Overload indication:LCD will show a “OL”.
- Low battery indication: automatic low power test, when battery voltage is lower than work voltage, “BAT” will be shown and you should be ready to replace a new battery.
- Sampling rate: 2.5 times/sec.
Electrical specification: (23°C+/-5°C, below 80%RH)
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DCV
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Rnge
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Resolution
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Accuracy
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Input impedance
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Overload Protection
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200mV
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100μV
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±(0.5%+1)
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10MΩ
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DC 1000V
AC 750V rms |
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2V
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1mV
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±(0.5%+3)
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20V
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10mV
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200V
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100mV
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1000V
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1V
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| ACV | ||||
| Range | Resolution | Accuracy 40Hz~500Hz |
Input impedance | Overload Protection |
| 200mV | 100μV | ±(1.2%+4) | 10MΩ | DC 1000V AC 750V rms |
| 2V | 1mV | |||
| 20V | 10mV | |||
| 200V | 100mV | |||
| 750V | 1V | ±(1.5%+4) | ||
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DCA
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Range
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Resolution
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Accuracy
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Voltage Burden
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Overload
Protection |
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200μA
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100nA
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±(1.2%+2)
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<0.7V
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0.5A/250V
fuse |
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2mA
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1μA
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20mA
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10μA
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200mA
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100μA
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10A
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10mA
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±(2.5%+2)
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<0.3V
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10A/250V fuse
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ACA
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Range
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Resolution
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Accuracy
40Hz~500Hz |
Voltage Burden
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Overload Protection
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200μA
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100nA
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±(1.5%+3)
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<0.7V
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0.5A/250V fuse
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20mA
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10μA
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200mA
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100μA
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10A
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10mA
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±(2.5%+3)
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<0.3V
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10A/600V fuse
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| Frequency Test (Auto Ranging) | ||||
| Range | Resolution | Accuracy | Max.sensitivity | Overload Protection |
| 2KHz | 1Hz | ±(0.8%+3) | Lo:500mVrms 10K-1MHz 5Vrms 1MHz-20MHz Hi:2Vrms 10-100KHz |
DC/AC 350Vrms |
| 20KHz | 10Hz | |||
| 200KHz | 100Hz | |||
| 2MHz | 1KHz | |||
| 20MHz | 10KHz | |||
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Diode Test
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Range
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Resolution
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Measuring
Voltage |
Measuring
Current |
Overload Protection
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 / |
1mV
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3.3Vmax
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0.7mA
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DC/AC 500V rms
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Transistor (HFE) Test:
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Range
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Measurement
Range |
Measuring
Voltage |
Measuring Current
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Overload
Protection |
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NPN PNP
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0～1000
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<3.2V
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IB ≒0.7mA
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─────
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Continuity Test:
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Range
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Resolution
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Sound level Voltage
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open-circuit
Protection |
Overload Protection
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| / |
0.1Ω
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75Ω below
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MAX 3.3V
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DC/AC 500V rms
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| Resistance Test | ||||
| Range | Resolution | Accuracy | Open-circuit Votlage |
Overload Protection |
| 200Ω | 0.1Ω | ±(1.2％+4) | MAX 3.3V | DC/AC 500V rms |
| 2KΩ | 1Ω | ±(1.0％+2) | >0.3V | |
| 20KΩ | 10Ω | |||
| 200KΩ | 100Ω | |||
| 2MΩ | 1KΩ | |||
| 20MΩ | 10KΩ | ±(2％+5) | ||
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Capacitance Test
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Range
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Resolution
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Accuracy
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Measuring
Frequency |
Overload
Protection |
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2nF
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1pF
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±(5％+10)
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≒200Hz/1.5sec
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0.5A/250V fuse
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20nF
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10pF
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2μF
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1nF
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20μF
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10nF
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2000μF
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1μF
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≒2Hz/8sec
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Inductance Test
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Range
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Resolution
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Accuracy
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Open-circuit
Voltage |
Overload
Protection |
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2mH
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1μ
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±(5％+10)
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≒1000Hz
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0.5A/250V Fuse
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20mH
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10μ
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200mH
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100μ
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≒200HZ
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2H
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1mH
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20H
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10mH
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