Capacitance Level Switches

A set of Capacitance Point Level Switches on a white background

Accurate, reliable, and repeatable

The capacitive level switches of the Pointek CLS series ensure excellent measurement performance, even under the harsh conditions of high-pressure and high-temperature applications.

Advanced product configuration and ordering

PIA Life Cycle Portal

RF capacitance

Application highlights

The following applications are just a few examples of capacitance point level switches in real applications.

Our portfolio:

  • SITRANS LCS050: ultra-compact with short insertion digital point level switch
  • Pointek CLS100: compact universal switch for constricted spaces
  • Pointek CLS200: standard universal switch with a wide range of communications and probe extensions
  • Pointek CLS300: harsh, demanding applications with high temperatures and pressures

Ultra-compact with short insertion digital point level switch

  • Very small insertion length of 15 mm (0.59 inch)
  • Easy installation with no need for adjustment
  • Low maintenance with no moving parts
  • Highly visible 360-degree status indication
  • M12 connector for ease of installation
  • IO-Link communication for advanced monitoring and configuration

The compact universal capacitance level switch for constricted spaces

  • Sensguard probe cover for abrasive applications
  • Integrated cable version for installation in tight spaces
  • Level detection independent of tank wall/pipe
  • Multiple outputs
  • PPS or PVDF probe options for multiple material compatibility
  • Fully potted design provides a durable solution
Industry Mall

Select and order

The standard universal capacitance level switch with a wide range of extensions

  • Selection of options: PROFIBUS communications, digital displays, and remote or local testing
  • Functional safety SIL2 ensuring safety and ease of integration
  • Multiple outputs
  • PPS or PVDF probe options for multiple material compatibility
  • Display with local button configuration
Industry Mall

Select and order

The capacitance level switch for harsh, demanding applications with high temperatures and pressures

  • Selection of options: PROFIBUS communications, digital displays, remote or local testing
  • Display with local button configuration
Industry Mall

Select and order

Technical specifications

 
SITRANS LCS050
Pointek CLS100
Pointek CLS200
Pointek CLS300
Range
15 mm (0.59 inch)
100mm (4")

Rod: 5.5 m (18 ft) 

Cable: up to 30 m (98 ft)

250 mm (9.8 inch) to 25 000 mm (984 inch)
Process Temperature
-20 … +100 °C (-4 … +212 °F) up to 1h, +135 °C (+275 °F)
-30 to 100 °C (-22 to 212 °F)
-40 to 125 °C (-40 to 257 °F)
-40 ... +400 °C (-40 ... +752 °F)
 Process Pressure
-1 … 25 bar/-100 … 2 500 kPa (-14.5 … 363 psig)
Up to 10 bar g (145 psi g)

Rod: up to 25 bar g (365 psi g) 

Cable: up to 10 bar g (145 psi g)

-1 ... +35 bar g (-14.6 ... +511 psi g)
Versions Available
Compact
Integrated cable, standard enclosure, fully synthetic
Compact, rod, cable
Rod, Cable, High temperature
Outputs
Transistor (PNP/NPN), IO-Link acc. to IEC 61131-9
mA current, solids state/relay
Profibus PA (Digital version), solids state, relay
Profibus PA (Digital version), solids state, relay
Options

– 

SensGuard probe cover

Probe materials: PPS, PVDF

Functional Safety (SIL 2). Device suitable for use in accordance with IEC 61508 and IEC 61511

PROFIBUS PA

LCD display

SensGuard probe cover

Probe materials: PPS, PVDF

Cable, Rod, High temperature, Profibus, PFA coating

Key Applications
Water-based liquids with > 10 % water (alcohols, acids, cleaning agents), slurries, foam and interface for point level, overfill and dry run protection including small pipes due to its compact design
Liquids, slurries, foam, solids and interface in various industries including: oil and gas, chemicals, food and general industries including hazardous areas
Liquids, slurries, foam, solids, and interface in various industries including: oil and gas, chemicals, food and general industries including hazardous areas
Liquids, slurries, foam, solids and Interface in various industries including: oil and gas, Mining, Cement, chemicals, food and general industries including hazardous areas
Overview brochure describing the complete level measurement portfolio

Download brochure

RF capacitance

Excellent measurement precision

The RF inverse frequency shift capacitance level switches of the Pointek CLS series 100 are designed or liquids and solids or liquid interface applications. Their unique product design allows for sensitivity adjustment to tune out and ignore buildup.

State-of-the-art technology

Whether in dusty, turbulent, and vaporous environments, or in situations with product buildup: The best-in-class inverse frequency shift approach to RF capacitance technology allows for unmatched measurement accuracy. Because even a small level change creates a large and detectable change in frequency, they provide excellent resolution while consistently outperforming conventional devices.

The fastest way to the experts

Proposed solutions for your queries and direct access to our experts in Technical Support.

Service offers

To remain competitive, companies in industry must ensure – and ideally increase – the availability and productivity of machines and plants. As your partner, we offer a unique range of services and support based on our extensive technology and industry expertise.

Service catalog

As your partner, we offer a unique range of services and support based on our extensive technology and industry expertise. With our offerings, you can expect a high degree of reliability and a successful digital future for your company.

Well trained for excellent handling

Receive standardized or individual expertise directly from the manufacturer – with training centers in more than 60 countries.

Safety integrated

Safety is key in the process industries. A failure in instruments relevant for safety may have serious implications for humans, the process and the environment. Therefore, a wide range of our process instruments come with on-board safety features for maximum risk reduction.

Contact

The right switch for every application

Siemens point level switches offer superior performance while reducing maintenance, downtime, and equipment replacement cost. Their robust design lasts in harsh and abrasive environments, guaranteeing a long service life and low cost of ownership.

Your direct line to Siemens

Contact your regional partner