Elixir - Liquid Level Switches

Elixir vibrating fork is a level switch for liquids and is used in tanks, containers and pipelines. As a sturdy replacement of conventional float switch, Elixir offers a variety of built-in features non-existant in floats and other switches, e.g. where materials are sticky, corrosive, agitated, splashing, foaming and having uncertain electrical properties.

This level switch detects the resonant frequency change and changes the output signal according to fail­safe mode selection. Typically, the output is fed to a PLC which then uses it to control the process.

Elixir vibrating fork is suitable for hazardous areas, available with explosion-proof housings certified by CMRI, Dhanbad.


IP-­67 Marking, RoHS Compliance, CE Marking, CMRI certified explosion-proof housing

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A specially shaped tuning fork is kept vibrating using piezo-electric elements. Typically, the fork vibrates at its natural frequency. The frequency of oscillation for the tuning fork changes when immersed in liquids. The change in frequency is detected by the microprocessor leading to a switching decision.

  • Low Power Consumption: Less heat, Long life
  • Universal Power Supply: 18V – 55 V DC, 90 -265 V AC
  • High temperature durability (H1 – up to 150°C )
  • Immunity to spurious external vibrations, material turbulence and flow
  • Suitable for liquids with viscosity up to 10,000 cP
  • Fast switching
  • Self-diagnosis
  • Independent of material’s electrical properties
Mechanical Specifications

Resonant Frequency

  • 1.1 Khz

Probe Length

  • Extendible probe length from 44mm – up to 3m


  • P5: IP-65 Weather Proof Housing
  • FA: Flame Proof for Gas Group IIa and IIb
  • FC: Flame Proof for Gas Group IIc

Process Connection (Mounting Arrangement)

  • Threaded Mounting: 1/2”, 3/4”, 1 1/2”, 2” BSP / NPT
  • Flanged Mounting : As per specification

Extension Length

  • Pipe – GI / SS: 200mm – 3000mm

Probe Length

  • Extension Length: + Fork Length(44mm/125mm)

Wetted Parts

  • S4: SS-304
  • S6: SS-316L
  • PT: PTFE Lined
  • HL: Halar Lined
  • HC: Hastelloy C

Process Temperature

  • A (Ambient): below 100°C
  • H (High temperature): 100°C – 150°C
Electrical Specifications

Input power supply & Outputs

  • D: Universal Power Supply 18-55 V DC, 90-265 V AC, Single-point two potential free relay outputs rated at 6A
  • S: Universal Universal Power Supply 18-55 V DC, 90-265 V AC
    • Singe-point – Single relay (Rated 6A)
    • Open-collector PNP output, max 100mA non-inductive load
  • M: 24VDC – 8/16 mA 2-wire Loop powered current output
  • N: 8.2V Namur type current output (ION = 2.2 … 2.5 mA, IOFF = 0.8 … 1.0 mA)

Namur compliance can be attained with a Namur certified isolator.

Power Consumption

  • 4 W at 24 V DC with 90 mA load

Fail-safe Setting

  • Field selectable (through toggle switch)
  • Open: Fail-safe High, Close: Fail-safe Low

Response Time

  • 0.8s Cover Delay
  • 1s Uncover Delay

Time Delay Settings

  • Cover and Uncover Delay: 0.8s/1s to 20s, through toggle switches

Sensitivity Setting

  • Field Selectable (through toggle switches)
Applications Specifications

Application Material

Elixir is suitable for all industrial liquids such as:

  • Pharmaceuticals
  • Brewery
  • Chemicals
  • FMCG
  • Pesticides
  • Textile
  • Food
  • Cosmetics
  • Confectionery
  • Edible oil
  • Diary
  • FMCG
  • Packaging
  • Utility Paper
  • Sugar powder
  • Paint
  • Flameproof Housing IIa / IIb / IIc certified by CMRI, Dhanbad


Switching Indication
  • 2 LED’s
  • Red: Alarm, Green: Normal

Forks as per your

More value in less real estate

Shorter vibrating forks – minimum insertion length of 44mm, with no compromise in operational ruggedness of the device. Saves space → paves the way for designing smaller tanks / silos.

Better immunity to external vibrations

Sapcon’s liquid vibrating forks have been successfully installed in applications where there is turbulence in the liquid and in the application tank.

100% incubated and tested → serving your application for longer

Long term reliability is the key feature of Sapcon

Reliability and quality with Elixir have gone a step further than straightforward operational compliance.

A 'switch' in time saves material 'fine'

Reliable and fast switching with an adjustable time delay option from 1s to 25s.

Coming Soon

Polished finish for hygienic applications

Ensures easy cleaning, helps with stringent hygiene compliances in pharmaceuticals, dairy and food applications.

Innovative range of outputs -

Packaging plant manufacturers or OEM’s (Original Equipment Manufacturers) desire outputs suitable at the end-user’s site. Relay and PNP (Open Collector PNP) outputs though standard are generally available only in separate models. Thus they normally had to be separately procured and stocked.

In a close understanding of our customer behaviour, we have launched a single model with both Relay and PNP outputs with an input power supply from 24 V DC – 265 V AC on the same two terminals. This directly results in savings by reducing the required inventory.