Amprobe PM51A Pocket Digital Multimeter w/ Frequency and Capacitance

Features & Applications:

The Amprobe PM51A is the world's smallest full-featured CAT III rated multimeter. The PM series of multimeters have many features in a very compact size. Has an oversize display plus one button function control.

The PM51A is an easy to use pocket meter that delivers all basic multimeter functions plus frequency and capacitance measurement capability. Completely autoranging with innovative control layout. Measures AC and DC voltage to 600 V, resistance to 40 MΩ, capacitance to 300 µF, and frequency to 1 MHz. Safety rated to CAT III 300V, CAT II 600V, cULus listed.

Features:

• Fully autoranging with 7 measurement functions and 27 ranges
• Complete safety ratings of CAT III 300 V, CAT II 600 V and cULus listing
• Oversize digital display with measurement results and the unit icon
• Data Hold freezes measurement value on the display
• One-year No Hassle warranty

Spec Summary:

Specifications
DC Voltage:
Range	400.0 mV
Accuracy	± (1.0 %+2 dgt)
Range	4.000 V, 40.00 V, 400.0 V
Accuracy	± (2.0 %+2 dgt)
Range	600 V
Accuracy	± (2.5 %+4 dgt)
NMRR	> 50 dB @ 50 Hz/60 Hz
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)
Range	60 Hz - 500 Hz 4.000 V, 40.00 V, 400.0 V
Accuracy	± (3.0 %+5 dgt)
Range	50 Hz - 500 Hz 600 V
Accuracy	± (3.5 %+5 dgt)
Input impedance	10 MΩ, 30 pF nominal
CMRR	> 60 dB @ dc to 60 Hz, Rs=1 kΩ

Capacitance:
Range1	500.0 nF, 5.000 µF, 50.00 µF, 500.0 µF, 3000 µF3
Accuracy2	± (3.5 %+6 dgt4)

Resistance:
Range	400.0 Ω
Accuracy	± (1.5 %+6 dgt)
Range	4.000 kΩ, 40.00 kΩ, 400.0 kΩ
Accuracy	± (1.0 %+4 dgt)
Range	4.000 MΩ
Accuracy	± (1.5 %+4 dgt)
Range	40.00 MΩ
Accuracy	± (2.5 %+4 dgt)
Open circuit voltage	0.4 V DC typical

Frequency:
Range5	400 Hz, 4 kHz, 40 kHz, 400 kHz, 1 MHz
Accuracy	± (0.5 %+4 dgt)
	Sensitivity (V-peak)
	5 Hz - 100 kHz > 1.3 Vp 100 kHz - 500 kHz > 2.2 Vp 500 kHz - 1 MHz > 4.2 Vp

Diode Tester:
Test current (typical)	0.25 mA
Open circuit voltage	1.6 V dc

Audible Continuity Tester:
Open circuit voltage	0.4 V dc typical
Audible threshold	65 Ω ±55 Ω

1Additional 50.00 nF range accuracy is not specified.
2Accuracies with film capacitor or better
3Updates > 1 minute on large values
4Specified with battery voltage above 2.8 V (half full battery). Accuracy decreases gradually to 12% at low battery warning voltage of approx 2.4 V
5Specified at input voltage < 20 V ac rms input signal: Sine-wave, or square-wave with duty cycle > 40 % & < 70 %

General Specifications
Display and update rate:
	3-3/4 digits 4000 counts; Updates 3 per second nominal

Operating temperature:
	0 °C - 40 °C

Relative Humidity:
	Max. 80 % R.H. up to 31 °C, decreasing linearly to 50 % R.H. at 40 °C

Altitude:
	Operating below 2000 m

Storage temperature:
	-20 °C ~ 60 °C, < 80 % R.H. (with battery removed)

Temperature Coefficient:
	Nominal 0.15 x (specified accuracy)/ °C @ (0 °C ~ 18 °C or 28 °C ~ 40 °C), or otherwise specified

Sensing:
	Average sensing

Overload Protection:
	600 V DC and V AC rms

Low Battery:
	Below approx. 2.4 V

Power Supply:
	3 V standard button battery x 1 (IEC-CR2032; ANSI-NEDA-5004LC)

Power consumption (typical):
	2 mA

Automatic Power Off (APO) timing:
	Idle for 30 minutes

APO Consumption (typical):
	2.2 µA

Dimensions:
	4.4" x 2.1" x 0.4" (L 113 mm x W 53 mm x H 10.2 mm)

Weight:
	Approx. 3 oz (78 gm)

Special features:
	Data Hold, and 30 ms MAX Hold

Agency Approvals:
	CE, cULus

Safety:
	Meets IEC61010-1, UL61010B-1, CAN/CSA-C22.2 No. 1010.1-92, CAT II 600 V and CAT III 300 V, Pollution Degree 2, Class 2 E.M.C. Meets EN61326

Meterman PM51 Pocket Digital Multimeter w/ Frequency and Capacitance Manual

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