PM55A
Data Sheet
Digital Multimeter
The compact precision DMM with AutoTect™ and VolTect™
The ultimate shirt-pocket sized
meter. Only 3/8” thick and less than
3 oz in weight with full functional-
ity 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 measure-
ment 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 III 300 V, CAT II
600 V and is UL approved.
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.
No hassle
warranty
No waiting.
No shipping
charges.
Our commitment to
high-quality products
and customer service
is demonstrated by
our industry exclusive
“No Hassle” warranty.
In the unlikely event
that an Amprobe Test
Tool requires warranty
service, any of our
local dealers are
authorized to replace
it, on the spot.
(note: $500 MSLP limit)
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AutoTect™ feature directs the meter to know if it is measuring AC
volts, 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 plus includes Voltect,™ a built-in, non-contact voltage
detector
Large oversize digital display
Protective silicon holster included, attached test leads, battery,
deluxe carry case and manual
One-year, no-hassle warranty
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600V
300V
Amprobe® Test Tools
www.Amprobe.com
PM55A Digital Multimeter
General Specifications
Display and update rate
Operating temperature
Relative humidity
Altitude
Storage temperature
Temperature coefficient
Sensing
Overload protection
Low battery
Power supply
Power consumption (typical)
Automatic Power Off
(APO) timing
APO consumption (typical)
Dimension
Weight
Special features
Agency approvals
Safety
E.M.C.
Data Sheet
3-5/6 digits 6000 counts; Updates 5 per second nominal
0 °C - 40 °C
Max. 80 % R.H. up to 31 °C, decreasing linearly to 50 % R.H. at 40 °C
Operating below 2000 m
-20 °C ~ 60 °C, < 80 % R.H. (with battery removed)
Nominal 0.15 x (specified accuracy)/ °C @ (0 °C ~ 18 °C or 28 °C ~ 40 °C), or otherwise specified
Average sensing
600 V DC and V AC RMS
Below approx. 2.4 V
3 V standard button battery x 1 (IEC-CR2032; ANSI-NEDA-5004LC)
6 mA for voltage functions on Auto-V W position & 2 mA for other functions
Idle for 3 minutes
2.2 μA
L 113 mm x W 53 mm x H 10.2 mm (4.4 x 2.1 x 0.4 in)
Approx. 78 gm (3 oz)
AutoTect™ (Automatic V &
W
selection) and VolTect™ (Electric Field Detection)
CE, cULus
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
Meets EN61326
Specifications
Function
Range
Accuracy
RF field @ 3 V/m Specified accuracy + 45 d (capacitance not specified)
DC Voltage
6.000 V
60.00 V
600 V (AutoTect™ Lo-Z)
600 V (Hi-Z only)
NMRR > 30 dB @ 50 Hz/60 Hz
CMRR > 100 dB @ DC, 50 Hz/60 Hz; Rs=1 kW
Input impedance AutoTect™ Lo-Z V DC: 833 kW (4.2 kW when displaying AUTO), 90 pF nom.
V DC AutoTect™ threshold >
AC Voltage (50
Hz - 60 Hz)
6.000 V, 60.00 V, 600 V
CMRR > 60 dB @ DC to 60 Hz, Rs=1 kW
Input impedance AutoTect™ Lo-Z V AC: 160 kW, 160 pF nominal
Hi-Z ACV 5 MW, 90 pF nominal
ACV AutoTect™ threshold > 1.5 V ac (50 Hz/60 Hz) nominal
± (1.5 %+5 dgt)
+1.2 V DC or < -0.6 V DC nominal (Hi-Z V DC only)
± (0.5 %+3 dgt)
± (1.0 %+5 dgt)
2.0 %
1.5 % + 5 dgt
Amprobe® Test Tools
www.Amprobe.com
PM55A Digital Multimeter
Specifications
Function
Capacitance
100.0 nF, 1000 nF, 10.0 μF,
100.0 μF, 2000 μF
1 3
1
Accuracy
2
Accuracies
3
Updates
Data Sheet
Range
Accuracy
± (3.5 %+6 dgt)
2
below 50 nF is not specified 4Specified with battery voltage above 2.8 V (half full battery).
with film capacitor or better Accuracy decreases gradually to 12% at low battery warning
> 1 minute on large values voltage of approx. 2.4 V.
Resistance
Range Accuracy
600.0
W
6.000 kW
60.00 kW, 600.0 kW
6.000 MW
Open circuit voltage 0.4 V DC typical
1
AutoTect™
2
Add
± (2.0%+6 dgt)
2
± (1.2%+6 dgt)
2
± (1.0%+4 dgt)
± (2.0%+4 dgt)
is for 6.000 kW ~ 6.000 MW ranges
40 dgt to specified accuracy while reading is below 20 % of range
10.00 Hz - 30.00 kHz
1, 2
10.00 Hz - 999.9 Hz
± (0.5 %+4 dgt) < 2 0 V Sine-rms
± (0.5 %+4 dgt) < 600 V Sine-rms
Frequency
1
Sensitivity
2
Line-level
(Sine-rms): Hz in Auto-V ( position:> 3 V
Hz in V position: @6.000 V AC range: > 3 V; @60.00 V AC range: > 6 V; @600.0 V AC range: > 60 V
Range
400.0 μA
2000 μA
Accuracy
± (1.5 %+3 dgt)
± (1.2 %+3 dgt)
Accuracy
± (2.0 %+3 dgt)
± (1.5 %+3 dgt)
Burden voltage
6 mV/μA
6 mV/μA
Burden voltage
6 mV/μA
6 mV/μA
DC μA Current
AC μA Current
Range
400.0 μA
2000 μA
VolTect™
Typical voltage Bar graph indication
15 V to 55 V
30 V to 85 V
55 V to 145 V
85 V to 190 V
above 120 V
Detection frequency 50/60 Hz
Detection antenna Top left corner of the meter
Audible Continuity Tester (600
W
range)
Open circuit voltage 0.4 V DC typical
Audible threshold 50
W
to 300
W
Diode Test
Diode test current 0.48 mA
Open circuit voltage < 1.6 V DC
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Indication Bar graph segments & audible beep tones proportional to field strength
www.Amprobe.com
PM55A Digital Multimeter
Data Sheet
Included Accessories
H-PMA protective holster, VC3A zippered
carrying case, battery installed and user’s
manual.
Amprobe® Test Tools
website: www.Amprobe.com
email: info@amprobe.com
Everett, WA 98203
tel: 877-AMPROBE
Amprobe® Test Tools Europe
In den Engematten 14
79286 Glottertal, Germany
Tel.: +49 (0) 7684 8009 - 0
©2007 Amprobe Test Tools. All rights reserved.
9/2007 2277165 D-US-N Rev B
Amprobe® Test Tools
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