Amprobe PM55A Pocket DMM

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PM55A Pocket Multimeter

The ultimate shirt-pocket size diameter. Only 3/8" thick and less than3 oz in weight with full functionality offering ac and dc voltage to 600 V, ac and dc current to 2000 μA, resistance to 6 Megohm, capacitance to 2000 μF, frequency to 30 kHz, diode test and continuity w/beeper. It also offers VolTect,™ a built-in, non-contact voltage detector for ac voltages.

Another key feature is AutoTect,™which automatically selects between ac voltage, dc voltage or resistance measurement based on the test point to which the leads are connected. Fully autoranging, this meter offers nine different measurement functions plus features that are usually found in much more expensive and larger meters.

The digital display is oversized with large digits and unit icons in the display. In spite of its size, this meter is fully safety rated to CAT III300 V, CAT II 600 V and is UL listed. No other meter this small offers such performance and high safety ratings. Includes a silicone protective holster, deluxe carrying case, attached test leads, battery and manual.

Automatic Precision Multimeter

Features

AutoTect™ feature directs the meter to know if it is measuring ac or dc volts or resistance with no user interface.
The AutoTect™ feature has lower input impedance which zeros out ghost voltages.
Measures ac/dc current, capacitance, frequency, continuity with beeper.
Voltect™ feature is a built-in, non-contact voltage detector.
Power supply 3 V standard button battery x 1 (IEC-CR2032; ANSI-NEDA-5004LC).
Automatic Power Off.
One-year Warranty

Safety Conformity

Specifications

RF Field	RF field @ 3V/m (Specified accuracy +45 digits Capacitance not
	specified)

DC Voltage Ranges	6.000V, 60.00V, 600.0V
DC Voltage Accuracy	±(0.5% of Rdg + 3 digits) for 6V range
	±(1.0% of Rdg + 5 digits) for 60V ranges
	±(2.0% 600V range (AutoTec™ Lo-Z)
	±(1.5% of Rdg + 5 digits) for 600V range (Hi-Z)
NMRR	>30dB @ 50/60Hz
CMRR	>100dB @ DC, 50/60Hz; Rs=1kΩ
Input Impedance	AutoTect™ Lo-ZV DC: 833kΩ, (412KΩ when displaying AUTO), 90pF nominal
V DC AutoTec™ Threshold	>+1.2V DC or <-0.6V DC nominal (Hi-Z Vdc only)

AC Voltage Ranges	6.000V, 60.00V, 450.0V
AC Voltage Accuracy (50/60Hz)	±(1.5% of Rdg + 5 digits) for 6V, 60V, 450.0V ranges
CMRR	>60dB @ DC to 60Hz, Rs=1kΩ
Input Impedance	AutoTect™ Lo-ZV DC: 160kΩ, 160pF nominal
V AC AutoTec™ Threshold	>+1.5V (50/60Hz) nominal

Capacitance Ranges	100.0nF, 1000nF, 10.0μF, 100.0μF, 2000µF
Capacitance Accuracy	±(3.5% of Rdg + 6 digits⁴) for 1000μF^1,3
Note 1. Accuracy below 50nF is not specified. Note 2. Accuracies with film capacitor or better accuracy decreases gradually to 12% at low battery warning. Note 3. Updates >1 minute on large values. Note 4. Specified with battery voltage above 2.8V (half full battery). Accuracy decreases gradually to 12% at low battery warning voltage of approx. 2.4V.

Resistance Ranges	600Ω, 6.000kΩ¹, 60.00kΩ, 600.0kΩ, 6.000MΩ
Accuracy	±(2.0% of Rdg + 6 digits²) for 600.0Ω range
	±(1.2% of Rdg + 6 digits) for 60.00kΩ, 600.0kΩ ranges
	±(2.0% of Rdg + 4 digits) for 6.000MΩ range
Open Circuit Voltage	0.4V DC typical
Note 1. AutoTectTM is for 6.000kΩ to 6.000MΩ ranges. Note 2. Add 40 digits to specified accuracy while reading is below 20% range.


Frequency Ranges	10Hz to 30.00kHz
Frequency Accuracy	±(0.5% of Rdg + 4 digits) <20V Sine-RMS (10Hz to 30.00kHz^1,2)
	±(0.5% of Rdg + 4 digits) <600V Sine-RMS (10Hz to 999.9Hz)
Note 1. Sensitivity (Sine-rms): Hz in Auto-V (position:>3V) Note 2. Line-level Hz in V position: @ 6.000V AC range: >3V; @ 60.00V AC range:> 6V; @ 600.0V AC range: >60V

DC µA Current Range	400.0µA, 2000µA
DC µA Current Accuracy	±(1.5% of Rdg + 3 digits) in 400.0µA range, (Burden Voltage 6mV/µA
	±(1.2% of Rdg + 3 digits) in 2000.0µA range, (Burden Voltage 6mV/µA

AC µA Current Range	400.0µA, 2000µA
AC µA Current Accuracy	±(2.0% of Rdg + 3 digits) in 400.0µA range, (Burden Voltage 6mV/µA
	±(1.5% of Rdg + 3 digits) in 2000.0µA range, (Burden Voltage 6mV/µA

VoltTect^TM

Typical Voltage	Bar Graph Indication
15V to 55V	-
30V to 85V	--
55V to 145V	---
85V to 190V	----
above 120V	-----
Indication	Bargraph segments and audible beep tones proportional to field
	strength
Detection Frequency	50/60Hz
Detection Antenna	Top left corner of the meter

Continuity Tester Open Circuit Voltage	0.4V DC typical
Audible Threshold	50Ω to 300Ω

Diode Test Current	0.48mA
Open Circuit Voltage	<1.6V DC

General Specifications

Display and Update Rate	3-5/6 digits 6000-counts; Updates 5 per second nominal
Sensing	Average sensing
Operating Temperature	0°C to 40°C
Storage Temperature	-20°C to 60°C, <80% R.H. (with battery removed)
Overload Protection	600V DC and 600V AC rms
Low Battery	Below 2.4V
Power Supply	One 3V button battery (IEC-CR2032; ANSI-NEDA-5004LC)
Power Consumption	6mA for voltage functions on Auto-V, Ω, position and 2mA for other functions
Dimensions	113mm (L) x 53mm (W) x 10.2mm (D) 4.4" (L) x 2.1" (W) x 0.4" (D)
Weight	78g (3oz)

Included Accessories

Protective holster included, Zippered carrying case, attached Test leads and Battery (installed), user manual