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DMS-20PC-3-LM
Self-Powered LED Display 480V
AC Line Monitor
OBSOLETE PRODUCT
Contact Factory for Replacement Model
FEATURES
DATEL’s DMS-20PC-3-LM is a low-cost, self-powered, 2-wire digital voltmeter
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Self-powered, two-terminal operation
350 to 600Vac operating input range
Half-wave averaging, rms calibrated
Large, easy-to-read, bright red or green LED display
Rugged, epoxy-encapsulated construction
Built-in bezel for panel mounting
Reliable screw terminals for easy installation
Small 1.38? x 0.88? x 1.0? package
designed for monitoring 480Vac 3-phase primary power. The DMS-20PC-3-LM’s unique
power-supply design allows a single model to operate
from 350 to 600Vac (47-63Hz). The meter requires no
external components or auxiliary power for full opera-
tion! Its large, 0.37?/9.4mm, bright red or green LED
display is easily readable under virtually all lighting
conditions.
DMS-20PC-3-LM employs rms calibrated,
half-wave sinusoidal averaging to achieve a display
resolution of 1Vac over its full operating range.
Packaged in a subminiature (1.38? x 0.88? x 1.0?)
red-?lter case with a built-in bezel, the meter is epoxy
encapsulated for ruggedness. An optional bezel as-
sembly, featuring metal fasteners, simpli?es panel
Functional Speci?cations
mounting.
Input
Voltage Range ?
Current Consumption
Performance
Sampling Rate
Measurement Type
350-600Vrms (47-63Hz)
50mArms (max.)
2.5 readings/second
Half-wave average, rms
calibrated for sinusoidal input
This easy-to-use, vibration-proof voltmeter is
the ideal digital upgrade for fragile analog-style
panel meters in 480Vac power distribution equip-
ment. It similarly excels in any new application requir-
ing accurate, high-voltage, ac line monitoring.
Typical panel mount installation and
suggested wiring (user supplied)
Accuracy @ +25°C
Temperature Drift
±1V (typ.), ±2V (max.)
Ordering Information
(–25 to +60°C)
Mechanical
Dimensions
Display Type
Weight
Case Material
6-32 screw torque
Environmental
Operating Temperature
Storage Temperature
Humidity (Non-condensing)
±0.15 Volts/°C (max.)
1.38? x 0.88? x 1.00?
3 digit LED, 0.37?/9.4mm
1 ounce (28 grams)
Polycarbonate
6-8 in-lb (0.7 – 0.9N-m)
–25 to +60°C
–40 to +75°C
0 to 95%
DMS-20PC-3-LM-C Red LED display
DMS-20PC-3-LM-G-C Green LED display
DMS-BZL3-C Panel mount bezel
DMS-BZL4-C Panel mount bezel with sealing gasket
DMS-20-CP Panel cutout punch
Brass screws (6-32 thread) and a panel-mount retaining clip are supplied with each meter
? Operation and accuracy at inputs above or below this range are
not speci?ed.
FUSED
For full details go to
www.murata-ps.com/rohs
AC POWER
SUPPLY
Typical Connection Diagram
www.murata-ps.com/support
MPM_DMS-20PC-3LM_D07 Page 1 of 2
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