Level switch0 pages

.
kyThe level switch for sanitary use
Alfa Laval Level Switch
.
Application
The Alfa Laval level switch is designed to fulfill the demands for precise
level indication in the Sanitary and pharmaceutical production.
Main features are:
- Wetted parts in AISI 316L, stainless steel and PEEK
- Compact, and hygienic design
- Process temperature -40...200°C
- LED indicator integrated into the field housing
- Not influenced by foam
- Ideal for media registration through registration of changes in
product dielectricity
- Quick teach option for difficult medias
- Maintenance free
Standard range
The Alfa Laval level transmitter is ideal for measurements in liquids
such as water and beer as well as viscous, sticky fluids, such as
honey, yoghurt and toothpaste. Even dry medias can be measured,
eg. sugar or flour.
The integrated electronics provide a digital logic signal and has
incorporated automatic compensation of foam, bubbles and
condensate as well as sticky media.
Due to the high temperature limit the Alfa Laval level switch is well
suitable for CIP and SIP processes.
The hygienic installation is guaranteed by using the hygienic Clamp DN
38 (ISO2852) / Clamp DN 40 (DIN32676) connection.
Working principle
The Alfa Laval level switch uses a high frequency signal sweep which
is radiated from the sensor tip into the tank. The media will act as a
virtual capacitor which, together with a coil in the sensor head, will
form a circuit creating the switch point signal. This virtual capacity will
depend on the di-electric value of the media which is well defined
for most medias
Technical data
Accuracy repeatabullyti: . . . . . . . . . . .±1 mm.
Hysteresis: . . . . . . . . . . . . . . . . . . .±1 mm
Measures values with dielectric values : .>1.5
Mechanical data
Process connections
Process connections . . . . . . . . . . . . .Clamp DN 38
(ISO2852)/Clamp DN 40
(DIN32676)
Materials
Wetted parts: . . . . . . . . . . . . . . . . .AISI 316 and PEEK
Fieldhousing . . . . . . . . . . . . . . . . . .AISI 304
Operating temperature
Wetted parts: . . . . . . . . . . . . . . . . .-40to85°C(140°C < 1 hour)
With cooling tower: . . . . . . . . . . . . . .-40 to 200°C (option)
Field house: . . . . . . . . . . . . . . . . . .-40 to 115 °C.
Protection class . . . . . . . . . . . . . . . .IP67
Maxmedia pressure: . . . . . . . . . . . . .40 bar
Weight
Sensor: . . . . . . . . . . . . . . . . . . . . .approx 500 gr.