Martel Electronics QM100V-40 User Manual
Single hole mounting 2-wire meter, Dimensions, Safety
RED
BLACK
0V
+4 to +40V d.c.
DIMENSIONS
All dimensions in mm (inches)
Single Hole Mounting
12.5mm / 0.5" LCD Digit Height
Reverse Polarity Protection
2-Wire Operation
V d.c. Full Scale Reading
4 to 40
Splashproof
EMV 1200-40
Single Hole Mounting 2-Wire Meter
Stock Number
0
4
-
0
0
2
1
V
M
E
r
e
t
e
m
t
l
o
V
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Specification
Min.
Typ.
Max.
Unit
)
t
n
u
o
c
1
±
(
V
4
.
0
)
r
o
r
r
e
ll
a
r
e
v
o
(
y
c
a
r
u
c
c
A
t
n
u
o
c
1
±
y
t
i
r
a
e
n
i
L
Valid displayed reading*
4.0
40.0
V d.c.
.
c
.
d
V
m
0
0
2
n
o
i
t
u
l
o
s
e
R
c
e
s
/
e
l
p
m
a
s
3
e
t
a
r
e
l
p
m
a
S
Operating temperature range
0
50
°C
.
c
.
d
V
0
5
3
e
g
a
t
l
o
v
y
l
p
p
u
S
A
m
3
t
n
e
r
r
u
c
y
l
p
p
u
S
REAR VIEW
Shown Actual Size
21.40
(0.84)
10.70
(0.42)
5.00
(0.20)
10.70
(0.42)
43.50 (1.71)
21.75 (0.85)
21.75 (0.85)
SAFETY
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).
* At voltages below 4.0V d.c., the LCD will display
and will ultimately go blank.
At Voltages in excess of 40.0V d.c., the LCD will display .
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.
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.
Operation and accuracy at voltages above 40.0V or below 4.0V are not specified.
LO
HI
APPLICATION
Reading when Vin < 4V,
before display switches off.
Reading when Vin > 40V.
Module thickness: 5.5mm (0.22")
CAL
QM100V-40
Washer
EMV 1200-40
Panel
2 wires - 30cm (12.0)
Nut
9.0
(0.35)
Seal
QM100V-40
FITTING THE EMV 1200-40
Drill a 5.5mm /
" hole in the panel.
not to overtighten the nut as this may damage the meter.
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32
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
washer and tightening the nut provided. Take care not to trap either of the connecting
wires. Do
FITTING THE QM100V-40
EMV 1200-40 is an easy to mount LCD digital panel meter.
To install the meter, the user need
only drill a single 5.5mm /
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.
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.
"
A rubber seal is included, providing
splashproof protection for the unit when fitted to the meter during installation.
7
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32
QM100V-40
QM100V-40
TVS ZENER DIODE
Martel Part Number: 80311
Digikey (www.digikey.com)
Part Number: 1N6287AGOS-ND
METER
TVS DIODE
+
–
PO Box 770, Londonderry, NH 03053 1-800-821-0023
www.martelcorp.com