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Product range:

Level
Niveau

  • Level limit switch
    for liquid media
    or as floor sensor

  • Level rod probes
    1-rod probes
    2-rod probes
    with aseptic screw-in thread

  • Level device for top-hat rail
    2 channels, relay or electronic output

  • Immersion probes
    Current or voltage output
    Optionally different cable and sealing materials
    Optional Ex versions

  • Screw-in probes
    Current or voltage output
    Optional Ex versions

Niveaugrenzschalter LLS 150

LLS 150
Level limit switch
for liquid media
Modular system
1/2" BSP process connection
EHEDG-compliant (foodstuffs)

More details...

LLS 150 level limit switch

Brief description:

  • Level limit switch for liquid media
  • Aseptic measuring point due to G 1/2" process connection thread for modular weld-in socket and process connection system (see accessories)
  • EHEDG-compliant, food-safe materials
  • No PC required for commissioning and calibration
  • Defined position of the screw connection

Your benefits:

  • Aseptic sealing system
  • Food-safe materials, EHEDG-compliant
  • Independent of the conductivity of the medium
  • Quick teach-in possible via teach-in button
  • Robust stainless steel head with protection class IP 69K

Niveaugrenzschalter LLS 250

LLS 250
Level limit switch (rod version)
for liquid media
Modular system
1/2" BSP process connection
EHEDG-compliant (foodstuffs)

More details...

LLS 250 level limit switch

Brief description:

  • Level limit switch for liquid media
  • Ideal as an alternative to the tuning fork
  • Aseptic measuring point thanks to 1/2" BSP process connection thread for modular weld-in socket and process connection system (see accessories)
  • EHEDG-compliant, food-safe materials
  • No PC required for commissioning and calibration
  • Defined position of the screw connection

Your benefits:

  • Aseptic sealing system
  • Food-safe materials, EHEDG-compliant
  • Independent of the conductivity of the medium
  • Quick teach-in possible via teach-in button
  • Robust stainless steel head with protection class IP 69K
  • Reliability even with adhesive and viscous media

Niveaustabsonde LRP 150

LRP 150
Level probe with 1 rod
1/2" BSP, conductive
EHEDG-compliant (food)
Optionally with evaluation module

More details...

LRP 150 level probe

Brief description:

  • Level rod probe as single-rod probe for conductive level measurement
  • Aseptic measuring point due to 1/2" BSP process connection thread for modular weld-in socket and process connection system (see accessories)
  • EHEDG-compliant, food-safe materials
  • Defined position of the screw connection
  • Rod can be freely shortened

Your benefits:

  • Aseptic sealing system
  • Food-safe materials, EHEDG-compliant
  • Rod can be shortened as required
  • Resistant to media adhesion with PFA coating
  • Robust stainless steel head with protection class IP 69K
  • Optionally with integrated LAM 2 evaluation electronics

Niveaustabsonde LRP 250

LRP 250
Level rod probe with 2 rods
1" BSP, conductive
EHEDG-compliant (food)
Optionally with evaluation module

More details...

LRP 250 level probe

Brief description:

  • Level rod probe as dual rod probe for conductive level measurement
  • Aseptic measuring point due to 1" BSP process connection thread for modular weld-in socket and process connection system (see accessories)
  • EHEDG-compliant, food-safe materials
  • Defined position of the screw connection
  • Rods can be freely shortened

Your benefits:

  • Aseptic sealing system
  • Food-safe materials, EHEDG-compliant
  • Rods can be shortened as required
  • Resistant to media adhesion with PFA coating
  • Robust stainless steel head with protection class IP 69K
  • Optionally with integrated LAM 2 evaluation electronics

Zubehör zu LLS + LRP

Accessories for
LLS 150+LLS 250+LRP 150+LRP 250
Weld-in sleeves
Sealing plugs
Process connections
Connecting cables
Plugs/connectors

More details...

Accessories

Weld-in sleeves, sealing plugs and process connections
for LLS 150 + LLS 250 + LRP 150 + LRP 250

  • Dead space and elastomer-free process adaptation
  • Hygienic installation in containers and pipelines
  • EHEDG and FDA compliant
  • Material stainless steel 1.4404 (AISI 316L), others on request
  • With material certificate on request
  • Process connections: Milk pipe, DIN 11851, Varivent, DRD flange

Connection cables, plugs and connectors
for LLS 150 + LLS 250 + LRP 150 + LRP 250

  • with pre-assembled M12 circular plug connector
  • 4-pole version
  • Stainless steel union nut
  • PVC cable
  • Various lengths

Niveaugerät LLD 200

LLD 200
Level device
for level monitoring
for top hat rail mounting
2 channels
Relay or electronics (PNP)

More details...

LLD 200 level device

Brief description:

  • Level device for top-hat rail mounting in the control cabinet
  • Channel 1: simple tank/level control
  • Conductive measuring method
  • Adjustment of sensitivity and time delay via potentiometer
  • Channel 2: Overflow or dry run protection (separate from channel 1)
  • 2 relay outputs (2 changeover contacts) or active electronic output for PNP
  • 2 status LEDs on the front panel

Your advantages:

  • Slim housing design 22.5 mm
  • 2-channel device (level control and full/empty signal)
  • Adjustable time delay
  • 2 status LEDs on the front
  • Integrated pump control with 3-rod probe

Immersion probe LMP 307

LMP 307
Immersion probe
with stainless steel sensor
Accuracy ±0.35/0.25/0.1% FS
0...1 to 0...250 mH2O
Diameter: 26.5 mm

More details...

LMP 307 immersion probe

Low temperature error
Very high accuracy
Good long term stability

Options:
SIL-2
Drinking water approval (DVGW, KTW)
Pressure sensor welded to housing (for gasoline)
Mounting with stainless steel tube

Media:
Water, fuels, oils

Immersion probe LMK 307

LMK 307
Immersion probe
with ceramics sensor
Accuracy ±0.5% FS
0...4 to 0...250 mH2O
Diameter: 27 mm

More details...

LMK 307 immersion probe

Good linearity
Excellent long-term stability
Easy handling

Options:
SIL-2

Media:
Water, waste water, fuels, oils

Immersion probe LMK 382

LMK 382
Immersion probe
with ceramics sensor
Accuracy ±0.35/±0.25% FS
0...40 cmH2O to 0...200 mH2O
Diameter: 39,5 mm

More details...

LMK 382 immersion probe

Particularly suitable for waste water, viscous and pasty media

Options:
Mounting with stainless steel pipe
Flange design
Separating membrane made of 99.9% Al2O3

Media:
Water, waste water, fuels, oils

Immersion probe LMK 387

LMK 387
Immersion probe
with ceramics sensor
Accuracy ±0.35/0.25% FS
0...1 to 0...100 mH2O
Diameter: 22 mm

More details...

LMK 387 immersion probe

Good long-term stability
Especially suitable for waste water

Options:
Titanium housing
Drinking water approval DVGW, KTW
Temperature sensor Pt 100
Mounting with stainless steel tube

Media:
Water, waste water, fuels, oils

Srew-in probe LMK 331

LMK 331
Screw-in probe
with ceramics sensor
Accuracy ±0.5% FS
0...400 mbar to 0...60 bar

More details...

LMK 331 screw-in probe

Pressure connection 3/4" BSP male flush for pasty and contaminated media

Options:
SIL-2
Pressure connection made of PVDF for aggressive media

Applications:
Plant and mechanical engineering
Energy industry
Environmental technology
Medical technology

Srew-in probe LMK 351

LMK 351
Screw-in probe
with ceramics sensor
Accuracy ±0.35/0.25% FS
0...40 mbar to 0...20 bar

More details...

LMK 351 screw-in probe

Pressure connection 1 1/2" BSP male for pasty and contaminated media

Options:
Separating diaphragm made of 99.9% Al2O3
Pressure connection made of PVDF for aggressive media

Applications:
Plant and mechanical engineering
Water technology

Explanations for level detection

Level limit switches

Thanks to their capacitive measuring principle, our level switches are particularly suitable for detecting the level of liquids in metal containers or pipes, regardless of the conductivity of the medium. Foam or condensate are not detected. Due to the modular design of our level limit switches, they are particularly suitable for the food and pharmaceutical industries, as hygienic and almost flush installation is guaranteed when using our weld-in sleeves. The output signal can be switched directly to a PLC, resulting in low wiring costs and high interference immunity. The type LLS 250 is particularly suitable for viscous, adhesive or pasty liquids due to its extended measuring nozzle.

Level rod probes

The conductive level probes are used for level detection in conductive liquids. The tank or pipe wall is used as the counter potential. As an option, the electrode can be provided with a special PFA coating, which means that foaming media can also be reliably detected. The level rod probes can optionally be equipped with an integrated evaluation module. The output signal can be connected directly to a PLC, resulting in low wiring costs and high interference immunity.

Level device for top hat rail mounting

These devices are used for conductive level monitoring in electrically conductive liquids. Level control can be implemented on channel 1 via a MIN and MAX electrode. A pump or valve can be controlled directly via a potential-free changeover contact. The switching time delay is adjustable. An overfill protection or dry run protection can be implemented on channel 2 with an additional electrode.

Hygrostatic level measurement

For hygrostatic level measurement we offer our immersion and screw-in probes.

Different housing materials (e.g. stainless steel, extremely resistant ceramics or robust plastics), sensor technologies as well as cable and sealing materials ensure that level detection is always accurate and reliable.

Hygrostatic measurement is the best phsical measurement method for level detection, regardless of whether the medium is contaminated, corrosive, thin or viscous.

Precondition for use: constant medium density.
The output signal of the sensor must be adjusted to the respective medium (with known density), e.g. in mbar/bar, mH2O or liquid column.

A hydrostatic pressure depends on the filling level, the density and the ambient pressure acting on the medium. The ambient pressure is taken into account by the integrated relative reference.

Immersion probes are suitable for measurement in open vessels and water (immersion from above). They are equipped with a cable and are completely immersed in the medium, as close to the bottom as possible.

Screw-in probes are additionally required for measurement in closed vessels, since here the pressure prevailing above the medium in the vessel differs from the ambient pressure.

For level measurement with screw-in probes, they are mounted pressure-tight on the side of the vessel wall.