MDMV0020 datasheet, PDF - EEWORLD Datasheet

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MDMV0020: Descriptionmeter dig display volt red BK LT; CategoryTopical application Test and measurement; File Size433KB，4 Pages; ManufacturerRed Lion Controls, Inc.; Websitehttp://www.redlion.net/; Environmental Compliance

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MDMV0020 Overview

meter dig display volt red BK LT

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Bulletin No. MDMV-F

Drawing No. LP0266

Revised 08/09

Tel +1 (717) 767-6511

Fax +1 (717) 764-0839

www.redlion.net

MODEL MDMV - MINIATURE DISPLAY MODULE D.C. VOLTMETER





LCD, POSITIVE REFLECTIVE OR NEGATIVE TRANSMISSIVE

WITH YELLOW/GREEN OR RED BACKLIGHTING





1 pA INPUT LEAKAGE CURRENT TYPICAL



200 mV FULL SCALE



AUTOMATIC ZEROING CIRCUIT



SELECTABLE DECIMAL POINTS



POLARITY INDICATION



5 VDC POWERED



FIVE SELECTABLE DISPLAY ANNUNCIATORS



PANEL MOUNT OR PC BOARD MOUNT



DESCRIPTION

The MDMV is a small panel or printed circuit board mount digital voltmeter.

With advantages of accuracy, size, and ease of installation, it is an ideal

replacement for analog meters. The unit has a 3½-digit LCD display with 0.4"

(10.2 mm) high digits. The displays are available in positive image reflective

(black digits, reflective background) or negative image transmissive (illuminated

digits, dark background) with red or yellow/green backlighting.

The integrated circuit is bonded directly to the printed circuit board and is

mechanically protected. Internal electrical interface connections use elastomeric

connectors to provide a corrosion resistant connection. This reliable construction

also reduces the space requirements.

The MDMV module is designed to operate from a +5 VDC supply. The

module measures input voltages from 0 to ±199.9 mV DC relative to the supply

common.

Auto-zeroing is provided by the module, therefore no zero adjustment is

required. If the input signal exceeds the input range, the unit display will

indicate an overrange condition.

The module has three selectable decimal point positions and five selectable

annunciators (BAT,V,A,m,μ). The BAT (Battery) annunciator is used to indicate

a low battery condition, while the others are used to indicate Volts and Amperes.

SPECIFICATIONS

1. DISPLAY:

3½-digit, 0.4" (10.2 mm) high digits. A minus(-) sign is displayed

when the voltage is negative.

2. DECIMAL POINTS:

Selectable decimal points are activated at the rear

terminal pins to allow the display to be read in tenths, hundredths or

thousandths.

3. ANNUNCIATORS:

5 selectable annunciators, BAT, V, A,

and m are

activated at the appropriate rear terminal.

4. POWER REQUIREMENTS:

Reflective Versions:

3 VDC to 6 VDC @ 500

μA

Max.

Backlight Versions:

4.8 VDC to 6 VDC @ 25 mA Max.

5. INPUT RANGE:

0 to ±199.9 mV DC.

6. COMMON MODE:

±1 V min. around common.

7. ACCURACY:

±(0.1% + 1 digit).

8. RESOLUTION:

100

μv/Count.

9. OVERRANGE RATINGS, PROTECTION & INDICATION:

Max Input Voltage:

6 VDC Max.

Overrange Indication:

Overrange is indicated by a “1” displayed in the

most significant digit and the blanking of the three least significant digits.

10. READING RATE:

2½ readings per second.

11. RESPONSE TIME:

1.5 seconds to settle for a step input change.

12. INPUT LEAKAGE CURRENT:

1 pA typical, 10 pA Max.

Note: Recommended minimum clearance (behind the panel) for mounting clip installation is 2.25" (57.2)W x 1.5" (38.1)H.

PANEL MOUNT UNIT

PANEL CUT-OUT

DIMENSIONS

In inches (mm)

1.06

(26.9)

.93

+.03

-.02

(23.6

+.8

)

-.5

R .06 MAX., 4PL.

(1.5)

1.81 (46.0)

NOTE: BACKLIGHT MODELS: 0.50" (12.7)

REFLECTIVE MODELS: 0.31" (8.0)

.06

(1.5)

SEE

NOTE

.2 (5.08) MAX.

.14 (3.56) MIN.

1.68

+.03

-.02

(42.7

+.8

)

-.5

PRINTED CIRCUIT BOARD MOUNT UNIT

RECOMMENDED PCB LAYOUT

UNIT OUTLINE

.90

(22.9)

.19 (4.8)

1.65 (41.9)

NOTE: BACKLIGHT MODELS: 0.56" (14.2)

REFLECTIVE MODELS: 0.37" (9.4)

SEE

NOTE

.2 (5.08) MAX.

.14 (3.56) MIN.

.10 (2.5)

.12 (3.1)

Ø.042 (1.07)

THRU, 15 PL.

MDMV0020 Related Products

	MDMV0020	MDMV0100	MDMV0000	MDMV0110	MDMV0010	MDMV0120
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