Endress+Hauser Level Measurement

Endress+Hauser Level Measurement

Levels in liquids, pastes, bulk solids or liquefied gases are often measured in tanks, silos or movable containers. For continuous, interface and density measurement as well as for point level detection a broad range of measuring principles is available. Endress+Hauser supports you from planning through commissioning and also maintenance of your measuring point.

Capacitance level measurement

Capacitance level measurement with Liquicap is a simple and cost-effective solution which offers a wealth of possibilities for level monitoring in liquids. Particularly in small tanks and build-up forming media. Point level detection works with Liquicap, Liquipoint, Minicap or Solicap capacitance level switches also in applications involving aggressive media and heavy build-up in liquids and solids.

Capacitance level sensors are a proved, as well as cost-effective solution for level measurement and point level detection in liquids and bulk solids. Various transmitters for continuous level measurement and switches for point level detection are available. The measurement of the interface is also possible. The measuring principle is proven in millions of applications.

Capacitance measurement: Measuring Principle

The principle of capacitive level measurement is based on the capacitance change of a capacitor. The probe and the tank wall form a capacitor whose capacitance is dependent on the amount of product in the tank: An empty tank has a lower, a filled tank a higher capacitance.

Benefits

• Proven and tested measuring principle – robust and safe
• Universally adaptable probe
• The reliable operation also in strong build-up formation and viscous media
• Easy commissioning

Capacitance Level measurement Liquicap FMI51

Liquicap FMI51 is a reliable fully insulated rod probe for continuous level monitoring in liquids, particularly in build-up forming media and extremely high temperatures. The measurement is independent of the dielectric constant (dc). Used in conjunction with Fieldgate FXA320 (remote measured value interrogation using Internet technology), Liquicap is an ideal solution for Inventory Management Solutions.

Measuring principle

• Capacitive

Characteristic / Application

• Fully insulated rod probe, for standard- and extreme process conditions (temperature, pressure, build-up)

Interface measurement

Interfaces liquid/liquid also with emulsion layers

Specialties

• Inactive length
• Factory calibrated
• short response time by a change of value

Supply / Communication

• 12-36V DC HART

Accuracy

• Repeatability 0,1%

Linearity error for conductive liquids

• <0,25%

Ambient temperature

• -50°C…+70°C (-58°F…+158°F)

Process temperature

• -80°C…200°C (-112°F…392°F)

Process pressure absolute/max. overpressure limit

Vacuum … 100 bar (Vaccum … 1450 psi)

Main wetted parts

• Insulation material: PTFE, PFA
• 316L

Process connection

• G1/2, G 3/4, G 1, G1 1/2 /NPT 1/2, NPT 3/4, NPT 1″, NPT1 1/2
• Flanges from DN25…/ASME 1″…/JIS…

Process connection hygienic

• Tri-Clamp ISO02852 gap-free plated
• Dairy coupling
• Flush-mounted seal

Sensor length

• Total length: 6m (20ft) – Inactive length: max. 2m (7ft)

Max. measurement distance

• 0.1 m … 4.0 m (0.3 ft … 13 ft)

Communication

• 4…20mA HART

Certificates / Approvals

• ATEX, FM, CSA, IEC Ex, TIIS, INMETRO, NEPSI, EAC

Safety approvals

• Overfill prevention WHG
• SIL

Design approvals

• EN 10204-3.1
• NACE MR0175

Hygienic approvals

• 3A, EHEDG

Marine approval

• GL/ ABS/ DNV

Application limits

• Insufficient clearance towards the ceiling
  Changing, non-conductive
  media, conductivity
  < 100 μS/cm

DataSheet