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Amprobe PM51A Pocket Digital Multimeter


Amprobe PM51A Pocket Digital Multimeter
Amprobe PM51A Pocket Digital Multimeter

The Amprobe PM51A, a shirt-pocket sized meter is only 3/8" thick and weighs less than 3 oz. With full functionality offering ac and dc voltage to600 V, resistance to 40 Megohm, capacitance to 3000 μF, frequency to 1 MHz, continuity with beeper, and diode test.

Fully auto ranging, this meter offers seven different measurement functions with 27 full ranges of measurement. The digital display is oversized with large digits and annunciators. In spite of its size, this meter is fully safety rated to CAT III 300 V, CAT II 600 V and is UL listed. No other meter offers this small size with such performance and high safety ratings.


  • Measures ac and dc voltage, resistance, continuity w/ beeper, capacitance and frequency
  • Fully autoranging with 7 measurement functions and 27 ranges
  • Large oversize digital display with measurement results and the unit icon
  • Data Hold freezes measurement value on
  • Average sensing
  • Power consumption (typical) 2 mA
  • Automatic Power Off , timing Idle for 30 minutes
  • APO consumption (typical) 2.2 μA
  • E.M.C. Meets EN61326
  • Battery installed, and User’s manual
  • Audible Continuity Tester Open circuit voltage 0.4 V dc typical
  • Diode Tester Test current (typical) 0.25 mA
  • Diode Tester Open circuit voltage 1.6 V dc
DC Voltage Ranges:    400.0 mV , Accuracy: ± (1.0 %+2 dgt)
DC Voltage Range:    4.000 V, 40.00 V, 400.0 V, Accuracy: ± (2.0 %+2 dgt)
DC Voltage Range:    600 V, Accuracy: ± (2.5 %+4 dgt)
DC Voltage NMRR:    > 50 dB @ 50 Hz/60 Hz
DC Voltage CMRR:    > 120 dB @ dc, 50 Hz/60 Hz; Rs= 1 kΩ
Input Impedance:    10 MΩ, 30 pF nominal; (1000 MΩ for 400.0 mV range)
AC Voltage Range 50 Hz - 60 Hz:    4.000 V, 40.00 V, 400.0 V, Accuracy: ± (2.0 %+5 dgt)
AC Voltage Range 60 Hz - 500 Hz:    4.000 V, 40.00 V, 400.0 V, Accuracy: ± (3.0 %+5 dgt)
AC Voltage Range 50 Hz - 500 Hz:    600 V, Accuracy: ± (3.5 %+5 dgt)
Input Impedance:    10 MΩ, 30 pF nominal
AC Voltage CMRR:    > 60 dB @ dc to 60 Hz, Rs=1 kΩ
Capacitance Range*:    500.0 nF, 5.000 μF, 50.00 μF,500.0 μF, 3000 μF3
Capacitance Accuracy*:    ± (3.5 %+6 dgt4)
Resistance Range:    400.0 Ω, Accuracy: ± (1.5 %+6 dgt)
Resistance Range:    4.000 KΩ, 40.00 KΩ, 400.0 KΩ, Accuracy:± (1.0 %+4 dgt)
Resistance Range:    4.000 MΩ, Accuracy: ± (1.5 %+4 dgt)
Resistance Range:    40.00 MΩ, Accuracy: ± (2.5 %+4 dgt)
Open Circuit Voltage:    0.4 V dc typical
Frequency Range**:    400 Hz, 4 kHz, 40 kHz, 400 kHz, 1 MHz,Accuracy:± (0.5 %+4 dgt)
Sensitivity (V-peak):    5 Hz - 100 kHz, Accuracy:> 1.3 Vp
Sensitivity (V-peak):    100 kHz - 500 kHz, Accuracy:> 2.2 Vp
Sensitivity (V-peak):    500 kHz - 1 MHz, Accuracy:> 4.2 Vp
Audible Continuity Tester Open Circuit Voltage:    0.4 V dc typical
Audible Threshold:    65 Ω ±55 Ω
Model NameDescription
PM51A
  • Measures ac and dc voltage, resistance, continuity w/ beeper, capacitance and frequency
  • Fully autoranging
  • Large oversize digital display
  • Data Hold
Included Accessories:   Carrying case, battery(installed), users manual
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