DATEL DMS-20PC-2-LM Datasheet

DMS-20PC-2-LM

Ordering Information

Features

Self-Powered, LED Display

High-Voltage, 60/400Hz, AC Monitor

Functional Specifications

Actual Size

DMS-BZL3

Optional Bezel

Input

Voltage Ranges:

➀

240-310Vrms (47-99Hz)
85-140Vrms (350-450Hz)

Current Consumption 50mArms (max.)

Performance

Sampling Rate 2.5 readings/second
Measurement Type Half-wave average, r ms calibrated

for sinusoidal input
Accuracy @ +25°C ±1V (typ.), ±2V (max.)
Temperature Drift

(–25 to +60°C) ±0.15 Volts°C (max.)

Mechanical

Dimensions 1.38" x 0.88" x 1.00"
Display Type 3 digit, red LED, 0.37"/9.4mm
Weight 1 ounce (28 grams)
Case Material Polycarbonate

Environmental

Operating Temperature –25 to +60°C
Storage Temperature –40 to +75°C
Humidity (Non-condensing) 0 to 95%

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Self-powered, two-terminal operation

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••

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Dual operating ranges: 240-310Vac at 50/60Hz or
85-140Vac at 400Hz

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Half-wave averaging, rms calibrated

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Large, easy-to-read, bright red LED display

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Rugged, epoxy-encapsulated construction

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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

Suggested wiring

(User supplied)

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 no external components or auxiliary
power for full operation! Its large, 0.37"/9.4mm,
bright red LED display is easily readable under
virtually all lighting conditions.

DMS-20PC-2-LM employs half-wave sinusoidal
averaging (rms calibrated) to achieve a display
resolution 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.

This low-cost, extremely versatile digital
voltmeter 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 monitoring.

Typical panel

mount installation

Mechanical Specifications

Dimensions in inches (millimeters)
Tolerances: 2 PL Dec ±0.02 (±0.51)

3 PL Dec ±0.010 (±0.254)

Recommended panel cutout dimensions:

1.336 (33.93)W × 0.838 (21.29)H

Internal corner radii 0.032 (0.81) Max.

➀

Operation and accuracy at inputs above or below these
ranges are not specified.

DMS-20PC-2-LM High-voltage ac monitor with screw

terminals and screws

DMS-20-CP Panel cutout punch
DMS-BZL3 Panel mount bezel
DMS-BZL4 Panel mount bezel with sealing gasket

Brass screws (6-32 thread) and a panel-mount retaining clip are
supplied with each meter

DS-0389B 1/99

DATEL, Inc., Mansfield, MA 02048 (USA) • Tel: [phone] Fax: [phone] • Email: [e-mail] • Internet: www.datel.com

DATEL makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained

herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. The DATEL logo is a registered DATEL, Inc. trademark.

®®

DMS-20PC-2-LM

®®

0.75

(19.1)

#6-32

UNC THD

0.44

(11.2)

0.80

(20.3)

0.32
(8.1)

0.04

(1.016)

0.88

(22.4)

1.00

(25.4)

0.04

(1.016)

0.04

(1.016)

1.30

(33.0)

1.38

(35.1)

0.19

(4.8)

1.28

(32.5)

0.10
(2.5)

1.07

(27.2)

0.10
(2.5)

#2-56 INSERT

0.156 (3.96) DEEP

1.63 (41.4)

1.83

(

46.5

)

0.37
(9.4)

www.datel.com