本月特价 热卖产品 货到付款 现场演示 延长保修 终身维修
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Specifications |
Model 391A |
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Volts |
True RMS reading |
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DC Ranges |
200 mV, 2V, 20V, 200V, 1000V |
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AC Ranges |
200 mV, 2V, 20V, 200V, 750V |
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Resolution |
10uV, 100mV, 1mV 10 mV, 100 mV |
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DC Accuracy |
+-(0.05% + 3 dgt) |
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AC Accuracy |
+-(1%+10 dgt.) 50 Hz - 500 Hz |
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+-(2% + 10 dgt.) 500 Hz - 2 kHz |
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|
500 Hz on 750V range |
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Overload Protection |
1200VDC or AC rms |
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|
500VDC/AC rms 15 sec |
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|
on 200mV range |
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Input Impedance |
10 MΩ |
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Current |
True RMS reading |
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Ranges |
200 uA, 2 mA, 20 mA, 200 mA, 20A* |
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Resolution |
10nA, 100 nA, 1 uA, 10 uA, 1 mA |
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DC Accuracy |
200 uA to 200 mA: +-(0.5% rdg + 5 dgt.) 20 A: +-(2% rdg + 10 dgt.) |
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AC Accuracy |
200 uA to 200 mA: +-(1.2% rdg + 10 dgt.) 20A: +-(2.5% rdg + 20 dgt.) |
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Input Protection |
uA/mA Input: 0.5A/500V fast blow ceramic fuse 20A input: 20A/600A fast blow ceramic fuse |
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Max. Burden Voltage |
600mV (900 mV on 20A range) |
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Resistance |
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Ranges |
200Ω, 2kOhm, 20 kOhm, 200 kOhm, 2 MOhm, 20 MOhm |
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Resolution |
10 mΩ, 100 mOhm, 1 Ohm, 10 Ohm, 100 Ohm, 1 kOhm |
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Accuracy |
200 Ω, 2 MOhm: +-(0.25% rdg + 10 dgt.) 2 kΩ to 200 kOhm: +-(0.15% rdg + 3 dgt.) 20 MΩ: +-(1.0% + 10 dgt.) |
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Open Circuit Voltage |
3.2 VDC typ. |
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Overload Protection |
500 VDC or AC rms |
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Diode Test |
Tested at 1 mA, 3.2 VDC max. typ. +-(1% rdg + 10 dgt.) accuracy |
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Transistor Test (hFE) |
Does not apply |
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Capacitance |
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Ranges |
Does not apply |
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Resolution |
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Accuracy |
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Test Voltage |
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Overload Protection |
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Frequency |
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Ranges |
2 kHz, 20 kHz, 200 kHz |
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Resolution |
0.1 Hz, 1 Hz, 10 Hz |
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Accuracy |
+-(0.1% rdg + 3 dgt.) |
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Sensitivity |
50 mV rms min. (@>30 & <70% duty cycle: 400 mV rms min.) |
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Minimum Pulse Width |
> 25 ns |
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Duty Cycle Limits |
> 30% & <70% |
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Minimum Input Range |
2 kHz: 10Hz: 20 kHz: > 60 dgt; 200 kHz > 60 dgt |
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Overload Protection |
500 VDC or AC rms |
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Logic Test |
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Logic Threshold |
Hi=2.8+-0.8V, 0=0.8 +-0.5V |
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Frequency Response |
20 MHz |
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Pulse Width |
25 ns |
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Pulse Limits |
> 20% and < 80% |
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Indication |
40m sec beep at logic 1 (Hi) |
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Overload Protection |
500 V DC or AC rms |
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Temperature |
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Range, Resolution |
Does not apply |
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Accuracy |
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Duty Cycle |
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Range, Resolution |
0 to 90%, 0/1% |
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Accuracy (5V logic) |
+-(2.0% + 10 dgt.) |
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Minimum Pulse Width |
10 us |
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Frequency Range |
40 Hz to 20 kHz |
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Overload Protection |
500 VDC or AC rms |
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General |
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Display |
20000 count, 4 1/2 digit LCD |
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Polarity |
Automatic, positive implied, negative polarity indication |
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Operating Temperature |
32 0 to 122 0 (0 0 to 50 0 C), 0 to 70% R.H. |
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Dimensions (HxWxD) |
7.8x3.5x1.57 (198x90x40 mm) |
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Weight |
11.3 oz. (320g) |
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Three Year Warranty | |
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Accessories | |
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SUPPLIED: 9V Battery, Test Leads, Instruction Manual, Thermocouple Probe (Model 390) OPTIONAL: TL-2A Deluxe Test Leads, TL-3 Accessory Tip Kit (for TL-2A), PR-28A High Voltage Probe (40kVDC), TL-130A General Purpose DMM Kit Carrying Case (not included): LC-29B | |
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*10 A continuous, 20A for 30 seconds max. | |
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