Harsh Liquid Level up to 200°C - Digi-Key

Liquid Level Sensors Capable of Operating in Harsh
Environments up to 200°
200°C
REED RELAYS REED SENSORS REED SWITCHES
Introduction
High temperature liquid environments have been around for a long time without
any accurate, easy method of measuring their liquid levels. MEDER has solved
this problem with their hermetically sealed reed based sensing systems, which
allows their float systems to exist in operating temperatures up to 200˚C. Their
new liquid level systems can also exist in very harsh liquids as well. The series
uses a stainless steel housing, offering lengths up to two meters, having many
switching points, and capable of multiple floats which are ideal when dealing
with multiple liquids having differing specific gravities.
Figure 1. Shows the LS05 Series in multiple
configurations with various float types.
Features
• Ability to operate up to 200˚C
• Ability to operate in pressurized atmospheres
up to 12 bars (170psi)
• Ideal when vertically mounted
• Stems are V2A stainless steel with stainless
steel floats also available
• Floats available to deal with the buoyancy and
harsh effects of oil, gasoline, petrol, brake fluid,
etc
• Floats also available for water, and some acids
• Lengths can vary from 80 mm to 2000 mm
• Stem diameter ranges from 7 mm to 16 mm
• Multiple floats setups available
• Various mounting threads available
• Reed contacts never directly subjected to the
outside environment
• Reed switches are hermetically sealed
• The magnet is not affected by the environment
• Millions of operations reliably
• Contacts dynamically tested
Applications
• Liquid level monitoring of tanks and reservoirs
• High and low liquid level monitoring
• Continuous liquid level monitoring
• Ability to monitor drinking water, brake fluid, oil,
gasoline, power steering fluid, etc.
Figure 2. Float magnets move up and down the reed switches located in the stem causing
the LED status to change at each liquid level.
Reliably measuring liquid levels when liquids have an ambient temperature up
to 200˚C has been a very difficult, costly and inaccurate undertaking. MEDER
has solved this problem in a rather elegant manner by using their hermetically
sealed reed based sensing systems, where they operate very accurately in a
relatively simple design format and cost effectively. Using a stainless steel stem
up to 2 meters long, several different floats are available capable of being
immersed in a variety of liquid systems that may be caustic, acidic, and at high
ambient temperatures. The hermetically sealed reed switches are further sealed
in the stainless steel stem where they are mounted on printed circuit boards,
with the ability to add further components being an easy undertaking. In this
manner several liquid level point can be monitored offering different signals for
each different level. Also, several floats may be used depending on the liquids
being monitored, particularly if the application has different liquids in a given
reservoir, where each has different specific gravities.
• Automotive
• Agricultural equipment
• Refrigerated trucks
• Food and beverage equipment
PA (polyamide) floats are available and are ideal for oil and gasoline
environments; PP (polypropylene) floats are ideal for water and dilute acids;
and V2A stainless steel floats are used for the high temperature environments.
These stems and floats all can we subject to high pressures up to 12 bar (180
psi).
MEDER electronic
Application
MEDER electronic AG | Germany | tel.: +49(0)7731/8399-0 | Email: [email protected]
MEDER electronic Inc. | USA | tel.: +1 508.295.0771 | Email: [email protected]
Page 1 of 2
www.meder.com
Liquid Level Sensors Capable of Operating in Harsh
Environments up to 200°
200°C
REED RELAYS REED SENSORS REED SWITCHES
Specifications delineating
delineating the LS05
Series
Operate specs
Min Max Units
Must close distance
5
2000 mm
Must open distance
5
2000 mm
Hysteresis
Whether you are switching signal levels or up to 1000 volts, our reed switches
can accomplish both in the same application directly with no further components
or switching devices. Because the reeds are hermetically sealed, the contacts
never oxidize as electromechanical switches do when exposed to harsh
environments. This is a very big advantage the hermetically sealed reeds have
over its electromechanical competitor where the later ends up sticking or failing
open in these tough conditions.
Adaptable Liquid Level Series
Series
Typical 50%
KSSKSS-BV150
BV15078
Load Characteristics
Switching voltage
Switching current
Carry current
Contact rating
Static Contact
resistance
Dynamic contact
resistance
Breakdown voltage
Operate time
Release time
Operate Temp
Storage
Storage Temp
Dimensions
mm
W
25
0.984
H
25
0.984
L
165
6.496
W
25
0.984
H
25
0.984
L
165
6.496
0.2760.630
0.2760.630
3.15078.740
Min Max Units
1000
1.0
1.5
100
150
200
Up to 4000
0.5
0.1
-20 200
-35 200
Volts
Amps
Amps
Watts
mΩ
LS04
mΩ
Volts
msec
msec
°C
°C
LS05
Illustration
inches
W
H
L
7-16
7-16
802000
Liquid Level Series
Series
LS01
LS02
LS03
Dimensions
mm
W
19
H
24
L
42
W
19
H
24
L
75
W
25
Illustration
inches
0.748
0.945
1.654
0.748
0.945
2.953
0.984
H
25
0.984
L
80
3.150
Consult our engineers for your exact requirement.
MEDER electronic
Application
MEDER electronic AG | Germany | tel.: +49(0)7731/8399-0 | Email: [email protected]
MEDER electronic Inc. | USA | tel.: +1 508.295.0771 | Email: [email protected]
Page 2 of 2
www.meder.com