DMS-20PC-2-LM
Self-Powered LED Display High-Voltage,
50/60/400Hz AC Line Monitor
DATEL’s DMS-20PC-2-LM is a component-size, self-contained, low-cost ac voltmeter
specifically designed for high-voltage or high-frequency operation. The DMS-20PC-2-LM’s
unique power-supply circuitry allows a single model to
operate from either 240 to 310Vac with 50/60Hz inputs or
from 85 to 140Vac with 400Hz inputs. The meter requires
FEATURES
N
Self-powered, two-terminal operation
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Dual operating ranges: 240-310Vac at 50/60Hz or
85-140Vac at 400Hz
N
Half-wave averaging, rms calibrated
no external components or auxiliary power for full opera-
tion! Its large, 0.37"/9.4mm, bright red LED display is
easily readable under virtually all lighting conditions.
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Large, easy-to-read, bright red LED display
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Rugged, epoxy-encapsulated construction
DMS-20PC-2-LM employs half-wave sinusoidal
averaging (rms calibrated) to achieve a display resolu-
tion of 1Vac over its full operating range. Packaged in
a red-filter case with a built-in bezel, the meter is epoxy
encapsulated for ruggedness.
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Built-in bezel for panel mounting
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Reliable screw terminals for easy installation
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Small 1.38" x 0.88" x 1.0" package
This low-cost, extremely versatile digital voltme-
ter is ideal for use in emergency power equipment,
277Vac fluorescent lighting systems, 400Hz aircraft
installations, and any other application requiring
accurate, high-voltage or high-frequency, ac line
Functional Specifications
Input
Voltage Range ~
240-310Vrms (47-99Hz)
85-140Vrms (350-450Hz)
50mArms (max.)
monitoring.
Typical panel mount installation
Suggested wiring (User supplied)
Current Consumption
Performance
Sampling Rate
2.5 readings/second
Measurement Type
Half-wave average, rms
calibrated for sinusoidal input
1V (typ.), 2V (max.)
Ordering Information
Accuracy @ +25°C
Temperature Drift
(–25 to +60°C)
DMS-20PC-2-LM-C High-voltage ac line monitor with screw terminals and screws
DMS-BZL3-C
DMS-BZL4-C
DMS-20-CP
Panel mount bezel
Panel mount bezel with sealing gasket
Panel cutout punch
0.15 Volts/°C (max.)
Mechanical
Dimensions
Display Type
Weight
1.38” x 0.88” x 1.00”
3 digit, red LED, 0.37”/9.4mm
1 ounce (28 grams)
Polycarbonate
Brass screws (6-32 thread) and a panel-mount retaining clip are supplied with each meter
Case Material
Environmental
Operating Temperature
Storage Temperature
–25 to +60°C
–40 to +75°C
Humidity (Non-condensing) 0 to 95%
~ Operation and accuracy at inputs above or below this range are
not specified.
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
Technical enquiries email: sales@murata-ps.com, tel: +1 508 339 3000
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