DMS-20PC-7-DCM View Datasheet(PDF) - DATEL Data Acquisition products

Part Name

Description

MFG CO.

DMS-20PC-7-DCM

– 36 to –75Vdc, Self-Powered LED Display, DC Voltage Monitor

DATEL Data Acquisition products  

1

www.datel.com

®

®

DMS-20PC-7-DCM

Actual Size

– 36 to –75Vdc, Self-Powered

LED Display, DC Voltage Monitor

Features

• Great for –48Vdc telecom power monitoring

• Self-powered 2-wire operation

• –36 to –75V operating input range

• Ultra-low power consumption, 8mA (typ.) at –48V

• –200V input transient protection

• Reverse polarity protected to +100V

• 0.37"/9.4mm high, bright red, LED display

• Subminiature 1.38" x 0.88" x 1.0" package

• Super reliable, epoxy-encapsulated construction

• –25 to +60°C operating temperature range

Functional Specifications

Input

Voltage Range ➀

Current Consumption

Reverse Polarity Protection

Transient Protection

Performance

Sampling Rate

Resolution

Accuracy @ +25°C

Temperature Drift

(–25 to +60°C)

Mechanical

Dimensions

Display Type

Weight

Case Material

–36.0 to –75.0Vdc

13.0mA (max.)

+100V (max.)

–200V (1µsec duration)

2.5 readings/second

0.1V

±0.1V (typ.), ±0.2V (max.)

±0.2 counts/°C (max.)

1.38" x 0.88" x 1.00"

3 digit, red LED, 0.37"/9.4mm

1 ounce (28 grams)

Polycarbonate

Environmental

Operating Temperature

Storage Temperature

Humidity (Non-condensing)

–25 to +60°C

–40 to +75°C

0 to 95%

➀ Operation and accuracy at inputs above or below this

range are not specified.

Ordering Information

DMS-20PC-7-DCM

–36.0 to –75.0V dc voltage monitor

DMS-20-CP

Panel cutout punch

DMS-BZL3

Panel mount bezel assembly

DMS-BZL4

Panel mount bezel with sealing gasket

Brass screws (6-32 thread) and a panel-mount retaining clip are

supplied with each meter

DATEL's new DMS-20PC-7-DCM self-powered digital voltage monitor is

designed for monitoring –48V intermediate bus voltages in modern telecom/

datacom/computer equipment. Its compact size and low power consumption

(8mA typical) make it the ideal replacement for older, hard-to-read, analog

panel meters. Simply connect a –36 to –75Vdc input across the two rear

terminals and the meter is fully operational!

The DMS-20PC-7-DCM's subminiature package

Typical panel

mount installation

(1.38" x 0.88" x 1.0") houses a large, 0.37"/9.4mm,

bright red LED display which can be easily read from

15 feet away. Built-in reverse polarity and transient

protection assures simple, trouble-free installation.

The DMS-20PC-7-DCM employs a high-

resolution, 3½ digit analog-to-digital converter and

precision metal-film resistors to achieve outstanding

performance over its entire operating temperature

range of –25 to +60°C. A rugged, epoxy-

encapsulated, polycarbonate case

(available only from DATEL!) provides excellent

protection against moisture, shock and vibration.

Suggested wiring

(User supplied)

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.

#6-32

UNC THD

0.44

(11.2) 0.80

(20.3)

0.04

(1.016)

0.04

(1.016)

0.04

(1.016)

0.88 0.37

(22.4) (9.4)

1.30

(33.0)

1.38

(35.1)

0.75

(19.1)

0.32

(8.1)

1.00

(25.4)

#2-56 INSERT

0.156 (3.96) DEEP

0.19

(4.8)

1.07

(27.2)

DMS-BZL3

Optional Bezel

1.28

(32.5)

0.10

(2.5)

1.63 (41.4)

1.83 (46.5)

0.10

(2.5)

DS-0389A 1/98

DATEL, Inc., Mansfield, MA 02048 (USA) • Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 • Email: sales@datel.com • 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.

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