OTHERS FEATURES
Input voltage
:
+5 V, ± 5% regulated, stabilized, or + 7,5 à 12 V filtered rectified.
Consumption
:
130 mA.
Optional power supplies:
2 galvanic insulated power supplies are available :
AL1040
:
9 - 28 VAC or 8 - 40 VDC
AL48250
:
40 - 250 VAC or 40 - 350 VDC
Connection
:
Disconnect screw terminal blocks for max 2.5 mm² wires.
Windows dimensions
:
24 x 72 mm.
Cut out dimensions
:
22,2 x 68 mm mini and 22,5 x 69 mm max. Thickness : 0,8 to 5mm
Protection level
:
IP 55 on the front after mounting ; IP 31 on the back.
Conditions of use
:
+5°C to +50°C
Conditions of storage
:
-10°C to +60°C
Conditions of moisture :
see graph
3. INTRODUCTION
3-1
UNPACKING
AND
CHECKING
Your digital meter has been tested and calibrated and carefully packed before shipment. Unpack the
instrument and check if it did not suffer from any damage. Any anomaly must immediately be pointed out.
To prevent any fire or explosion risks and ensure a good operation of the instrument, respect the safety
instructions below :
Visual control : if the LED2472 has been damaged, do not try to make it work.
Mounting : it is made to be installed on plane surfaces. Check cut out dimensions and respect the mounting
instructions (see § 3-4).
CAUTION :
The power supply and chassis input are internally linked. Therefore, the useful input voltage for the
operation of the LED2472 must imperatively be insulated from the main input voltage.
All connections or modifications of the connections must be done out of voltage.
There is no switch, it is ready to work as soon as it is plugged.
Moisture : To prevent all deterioration risks, do not expose to moisture.
Fumes and gas : Do not use in a gas or flammable fumes environment, this is especially dangerous.
3-2
CONFIGURATION
The Voltmeter or Ammeter is delivered in Auto on the requested range.
Configuration of range before starting:
Range
: enables range selection. On voltmeter : 2 V, 20 V, 200 V, 500 V.
on Ammeter : 2 mA, 20 mA, 200 mA, 2 A or 100 mV (for outside shunt).
CONFIGURATION of reading mode and decimal point
(delivered Auto and on the required range)
Principle of menus: The button under the LED "DC" is used to navigate through menus, the bottom button to
change settings. A first pressing the top button selects the menu "Decimal point"; the displacement is made
with the bottom button. After having positioned, a second pressing on the top button goes to the menu
"Measuring mode". Select mode by pressing the bottom button (Auto, DC, AC, AC with flashing bars). To
confirm the selections and exit the menus, press the top button.
Auto
: LED2472 is able to determine in an autonomous way if it deals with an AC or DC signal.
TRMS (AC+DC) reading (the 1st digit flashes when AC voltage on).
AC
: The device stays in AC mode (AC+DC). It enables TRMS signal analysis.
(the 1st digit flashes to show AC voltage reading)
DC
: The device stays in DC mode (DC). It enables a faster display and an accuracy gain.
(DC indicator lights up on front panel)
Dec. Pt. : enables to move the decimal point according to the range ; Display : 1.999 ; 19.99 ; 199.9
3-3
MOUNTING
Cut out to forecast : 22,2 x 68mm mini, 22,5 x 69 mm max.
Mounting procedure on a plane surface
(a silicon joint enables its sealing)
Disconnect the 2 disconnect screw terminal blocks and cable them. (CAUTION, refer to § 4).
Reconnect these terminal blocks and insert the digital meter until the clips. While pressing lightly on the clips,
insert it completely.
4. CONNECTION
VOLTAGE
CURRENT
Terminals B1 and B2 can accept wires until 2,5 mm².
Measuring connection on terminal B1
Connect voltage or current following your configuration respecting
Pic
. 6 or
Pic
. 7.
CAUTION : on ammeter 2 A, inputs are on (e+A) in the middle plate and (e-A) on the right of the
B1
terminal block.
Power supply connection on terminal B2
Connect the power supply respecting
Pic.
6 or
Pic.
7. Two types of power supplies are possible :
- 5 volts ± 5% regulated (to be connected on the middle plate B2)
- or +7,5 to 12 volts filtered and rectified ± 5% ripple (to be connected on the block at the right B2).
CAUTION
:
Whatever the configuration, all connections must be done outvoltage.
In order to avoid reference problems, we advise you to supply the LED2472 by an optional power supply (AL1040
or AL48250) that insulate the power supply measurement. Indeed, on the initial version, the input "measurement"
and "power supply" are internally linked.
Pic. 1
Plane
surface
Pic. 3
Pic. 4
Pic. 5
Pic. 6
Pic. 7
Take the connectors blocks off, then the back part of the indicator
(thanks to a small screwdriver).
Using the male terminal blocks on the printed circuit, pull the block
backwards, move the jumper to configure the gauge according to
the table opposite.
8 0
5 0
3 1
4 0
° C
%
m a x i m u m r e l a t i v e
m o i s t u r e
Pic. 2
Multicaliber
Input
e+ V
Voltage
Input
e- V
GND Supply
+7,5V to 12V
OR
+5V
B2
B1
ME
AS
UR
EM
EN
T
SU
PP
LY
Input
e+ A
2, 20, 200 mA,
100 mV
Input
e-
A
GND Supply
+7,5V to 12V
OR
+5V
B2
B1
ME
AS
UR
EM
EN
T
SU
PP
LY
Input
e+ A
2 A
V
2V
20V
200V
500V
A
2mA
20mA
200mA
2 A
100mV
ju
m
pe
r
1
2
3
4
4
3
2
1
