298
www.meder.com
MEDER electronic
LS03 Series
Level Sensors with
Magnetic Floats
DESCRIPTION
Standard liquid level sensor. The sensor has to be
mounted horizontally for best results.
Following materials are available:
PP (Polypropylene) for water applications and
dilute acids
PA (Polyamide) for use in oil, gasoline (petrol) and
brake uid
The standard termination is a PVC cable with a
cross section of 0.14 mm2 and a length of 500 mm.
The cable can be modied on request.
APPLICATIONS
Liquid container monitoring in household ap-
pliances, automotive applications, test and
measurement, and control technology.
•
FEATURES
Depending on mounting position/movement
direction, the sensor opens or closes with the
rising, respectively the sinking liquid level
Different versions available for mounting from
inside or from outside
High power switches available
•
•
•
MATERIALS
PA version
Stem, nut Polyamide black
Float Polyamide black
Seal Nitrile rubber
PP version
Stem, nut Polypropylene white
Float Polypropylene white
Seal Nitrile rubber
open
open
close
close
MOVEMENT DIRECTION
299
www.meder.com
MEDER electronic
VERSIONS & DIMENSIONS
All dimensions in mm [inch]
M16 x 2.0
83.0±1.50
[3.268±0.059] 55.8±0.7
[2.197±0.028]
ø 21.5±0.3
[0.846±0.012]
[1.417±0.059]
36±1.5
[ø0.649±0.012]
ø 17.4±0.3
8.0
[0.315]
30±2
[1.181±0.079] 500±10
[19.685±0.394]
5±1
[0.2±0.04]
LS03 Series
Level Sensors with
Magnetic Floats
83.0±1.50
[3.268±0.059]
max. 5.0
[0.196]
12.0
[0.472]
3.0
[0.118]
ø 21.5±0.3
[0.846±0.012]
55.8±0.7
[2.197±0.028]
M16 x 2.0
17.2±0.3
[0.677±0.012]
30±2
[1.181±0.079] 500±10
[19.685±0.394]
5±1
[0.2±0.04]
[1.417±0.059]
36±1.5
83.0±1.50
[3.268+0.059]
55.8±0.7
[2.197±0.028]
ø 21.5±0.3
[0.846±0.012]
min. 4.0
[0.157]
ø17.2±0.3
[0.677±0.012]
[1.417±0.059]
36±1.5
30±2
[1.181±0.079] 500±10
[19.685±0.394]
5±1
[0.2±0.04]
M16 x 2.0
5.0
[0.196]
2.0
[0.079]
[1.417±0.059]
36±1.5
Thread
1/2" 14 NPT Tapered
80.00±1.5
[3.150±0.059] 70.00±1.5
[2.756±0.059]
ø 28.58
[1.125]
16.65
[0.656]
6.35
[0.250]
ø 17.20±0.3
[0.677±0.012]
30±2
[1.181±0.079] 500±10
[19.685±0.394]
5±1
[0.2±0.04]
Standard
Mounting from inside, thread M16 x 2.0
Insertion hole: ø 16.5 mm
Sealing from inside with O-ring.
•
•
•
DL Type
Mounting from outside, thread M16 x 2.0
Insertion hole: ø 22 mm - 24mm
12 mm wide sealing, suitable for low lling
pressure
Wall thickness max. 5 mm
•
•
•
•
DK Type
Mounting from outside, thread M16 x 2.0
Insertion hole: ø 22 mm
5 mm narrow sealing, suitable for high lling
pressure
Wall thickness min. 4 mm
•
•
•
•
GZ Type
Mounting from outside, tapered thread 1/2“
(no sealing necessary)
Insertion hole: 1/2” thread
•
•
300
www.meder.com
MEDER electronic
CONTACT DATA
LS03 Series
Level Sensors with
Magnetic Floats
All Data at 20° C Switch Model →
Contact Form →
Switch 66
Form A
Switch 85
Form A
Contact Ratings Conditions Min. Typ. Max. Min. Typ. Max. Units
Switching Power Any DC combination of V & A not
to exceed their individual max.‘s 10 100 W
Switching Voltage DC or peak AC 200 1000 V
Switching Current DC or peak AC 0.5 1.0 A
Carry Current DC or peak AC 1.25 2.5 A
Static Contact Resistance w/ 0.5 V & 10 mA 150 150 mΩ
Dynamic Contact Resistance Measured w/ 0.5 V & 50 mA ,
1.5 ms after closure 200 200 mΩ
Insulation Resistance across
Contacts 100 volts applied 1010* 1011 Ω
Breakdown Voltage across
Contact Voltage applied for 60 sec. min. 225 * 700 VDC
Operation Time incl. Bounce Measured w/ 50 % overdrive 0.5 1.0 ms
Release Time Measured w/ no coil suppression 0.1 0.1 ms
Capacitance at 10 kHz cross contact 0.2 0.7 pF
Environmental Data
Shock Resistance 1/2 sinus wave duration 11 ms 50 50 g
Vibration Resistance From 10 - 2000 Hz 20 20 g
Ambient Temperature 10°C/ minute max. allowable -20 90 -20 130 oC
Stock Temperature 10°C/ minute max. allowable -20 100 -55 130 oC
Soldering Temperature 5 sec. dwell 260 260 oC
Please note: The indicated electrical data are maximum values and can vary downwards when using a more sensitive
switch.
* Insulation resistance of 1012 and breakdown voltage of 480 VDC is available.
These ranges refer to the uncut / unmodied Reed Switches described in our Reed Switch section. Consult factory if
more detail is required.
301
www.meder.com
MEDER electronic
Part Number Example
LS03/DL - 1A66 - PA - 500 W
DL is the version
1A is the contact form
66 is the switch model
PA is the material
500 is the cable length (mm)
W is the termination
ORDER INFORMATION
Series Version Contact
Form
Switch
Model Material Cable
Length (mm) Termination
LS03 - XX XX - XX - XXX X
Option
(Standard)
1 Form A
66, 85
PA, PP 500 * W
/ DL - 66, 85
/ DK - 66, 85
/ GZ - 66, 85
* Other cable lengths available.
TERMINATION
For wire and termination details please contact factory.
W
The cable cut length includes:
5 mm of wire stripped and tinned
Level Sensors with
Magnetic Floats
LS03 Series