QM100V-40【PDF 1/1 页】DC VOLTMETER 4-40 VDC

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EMV 1200-40

QM100V-40

Single Hole Mounting 2-Wire Meter

EMV1200-40

QM100V-40 is an easy to mount LCD digital panel meter. The module features a 4 to 40V measurement range with 200mV resolution and is powered from the signal

it is measuring. Only valid readings are displayed; the module indicates "LO" at voltages below 4V and "HI" at voltages above 40V. To install the meter, the user need

only drill a single 5.5mm / 7 / 32 " hole in the panel. The module is fitted to the panel by locating its threaded stud through the hole, fitting the washer and tightening the

nut provided. The module's connecting wires pass through the hollow stud into the target application for connection. A rubber seal is included, providing

splashproof protection for the unit when fitted to the meter during installation.

Single Hole Mounting

2-Wire Operation

4 to 40 V d.c. Full Scale Reading

12.5mm / 0.5" LCD Digit Height

Reverse Polarity Protection

Splashproof

Shown Actual Size

APPLICATION

+4 to +40V d.c.

E a s y M o u n t i n g V o l t m e t e r

Stock Number

E 2

QM100V-40 4 0

RED

Specification

A c c u r a c y ( o v e r a l l e r r o r )

Min.

Typ.

0 . 4

Max.

Unit

V ( ± 1 c o u n t )

L i n e a r i t y

± 1

c o u n t

Valid displayed reading*

R e s o l u t i o n

S a m p l e r a t e

Operating temperature range

S u p p l y v o l t a g e

4.0

2 0 0

40.0

5 0

V d.c.

m V d . c .

s a m p l e / s e c

°C

V d . c .

BLACK

S u p p l y c u r r e n t

m A

SAFETY

* At voltages below 4.0V d.c., the LCD will display LO and will ultimately go blank.

At Voltages in excess of 40.0V d.c., the LCD will display HI .

Do NOT exceed 50V d.c., as this may damage the meter.

The module includes reverse polarity protection up to 30V for up to 30 seconds.

Operation and accuracy at voltages above 40.0V or below 4.0V are not specified.

To comply with the Low Voltage Directive (LVD 93/68/EEC), input voltages to the module’s wires must not exceed 60Vd.c. The user must ensure that the

incorporation of the meter into the user ’s equipment conforms to the relevant sections of BS EN 61010 (Safety Requirements for Electrical Equipment for

Measuring, Control and Laboratory Use).

DIMENSIONS

All dimensions in mm (inches)

WARNING! In automotive applications or where an alternator

is present and there is the possibility of a transient voltage

spike it is recommended to use some type of transient

voltage suppressor (TVS) to protect the meter.

Reading when Vin < 4V,

before display switches off.

METER

TVS ZENER DIODE

Martel Part Number: 80311

10.70

(0.42)

REAR VIEW

43.50 (1.71)

5.00

TVS DIODE

–

Digikey (www.digikey.com)

Part Number: 1N6287AGOS-ND

10.70

(0.42)

CAL

(0.20)

Reading when Vin > 40V.

Seal

Panel

2 wires - 30cm (12.0)

QM100V-40

21.75 (0.85)

EMV 1200-40

Module thickness: 5.5mm (0.22")

EMV1200-40

FITTING THE QM100V-40

Drill a 5.5mm / 7 / 32 hole in the panel. Fit seal to the rear of the module. Fit the module to

the panel by passing its screw threaded stud and the wires through the hole, fitting the

Nut

washer and tightening the nut provided. Take care not to trap either of the connecting

wires. Do not to overtighten the nut as this may damage the meter.

9.0

(0.35)

Washer

PO Box 770, Londonderry, NH 03053 1-800-821-0023

www.martelcorp.com

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