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Level Measurement
Built on global experience in the field, Siemens provides a complete range of level measurement devices for every application. With the knowledge that no single technology can address the needs of all industrial challenges, Siemens offers a full range of contacting and non-contacting instrumentation for continuous and point level measurement.
Point Level Switches
Your plant’s lifeline to safety, efficiency, and a headache-free day. Precision and reliability are of top priority in level measurement. And a given for Siemens point level switches, which cover virtually all applications, from bulk solids to liquids.
Capacitance
Pointek capacitive RF point level switches measure interface, solids, liquids, slurries, and foam.
Rotary Paddle
The SITRANS LPS200 is a rotary paddle switch for point level and material detection in bulk solids.
Ultrasonic
The Pointek ULS200 is an ultrasonic non-contacting switch for point level detection, ideal for sticky materials.
Vibrating
SITRANS vibrating level switches detect high, low, and demand levels in liquid or solid applications.
Capacitance Level Switches
Capacitance level switches – LCS and CLS
Accurate, reliable, and repeatable. The capacitive level switches of the Pointek CLS and SITRANS LCS series ensure excellent measurement performance, even under the harsh conditions of high-pressure and high-temperature applications.
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
Detail
Range 15 mm (0.59 inch)
Process Temperature -20 … +100 °C (-4 … +212 °F) up to 1h, +135 °C (+275 °F)
Process Pressure -1 … 25 bar/-100 … 2 500 kPa (-14.5 … 363 psig)
Versions Available Compact
Outputs Transistor (PNP/NPN), IO-Link acc. to IEC 61131-9
Options –
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
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
Detail
Range 100mm (4″)
Process Temperature -30 to 100 °C (-22 to 212 °F)
Process Pressure Up to 10 bar g (145 psi g)
Versions Available Integrated cable, standard enclosure, fully synthetic
Outputs mA current, solids state/relay
Options SensGuard probe cover
Probe materials: PPS, PVDF
Key Applications Liquids, slurries, foam, solids and interface in various industries including: oil and gas, chemicals, food and general industries including hazardous areas
Ultrasonic
Ultrasonic level switch – Pointek ULS200
Multipurpose and maintenance-free. The Pointek ULS200 uses an ultrasonic non-contacting switch to detect solids, liquids, and slurries. Particularly adept at measuring sticky materials, it’s usable across many industries.
Rotary Paddle
Rotary paddle level switch – SITRANS LPS200
Rugged, ready, and precise. Featuring state-of-the-art safety technology and multiple paddle options, the SITRANS LPS200 is as reliable as it is versatile.
Designed for longevity’s sake
Easy two-button programming
Two switch outputs for alarms
Flange adaptor
Electronics provided with fail-safe function
Threaded and sanitary fitting clamp process connections for installation flexibility
Detail
Range
Liquids: 0.25 m to 5 m (0.8 to 16 ft)
Solids: 0.25 m to 3 m (0.8 to 10 ft)
Process Temperature -40 to 60 °C (-40 to 140 °F)
Process Pressure Up to 0.5 bar g (7.25 psi g)
Options
ETFE or PVDF copolymer
Sanitary version
Key Applications Liquids, slurries, fluid materials, plugged chute detection, chemical industry
Practical, low-maintenance design
Optional hinged vane for low density materials and small process connections
Five seal ingress protection
Motor switches off during alarm for long service life
Friction clutch design prevents impact damage
Rotation failure monitoring
Ideal for extreme conditions including high temperature and buildup
Rotatable enclosure for ease of installation
Detail
Range 100 mm to 10 m (4 inch to 30 ft)
Process Temperature -25 to 600 °C (-13 to 1112 °F), higher temperatures upon request
Process Pressure Up to 10 bar g (145 psi g)
Bulk densities Starting at 15 g/l (0.9 lb/ft³) with optional vane
Versions available Compact, rigid extended, cable extended, angle extended
Options
Functional Safety (SIL 2). Device suitable for use in accordance with IEC 61508 and IEC 61511
Fail-safe configuration
High-temperature model
Extension kit (cable or rigid)
Universal power supply
Key Applications Bulk solids such as grain, feed, cement, plastic granulate, wood chips
Vibrating
Vibrating level switch – SITRANS LVS and LVL
Adaptive, efficient, and essential. Siemens vibrating level switches detect high, low, and demand levels for liquids and solids. They perform in extreme conditions and benefit many industries.
SITRANS LVL100
Detects liquid and slurry levels in confined spaces.
Fault monitoring for corrosion, loss of vibration, and line break to the piezo drive
Compact design for tight spaces
Threaded process connection starting at ½”
Detail
Range 40 mm (1.5″) insertion
Process Temperature -40 to 150 °C (-40 to 302 °F)
Process Pressure -1 to 64 bar g (-14.5 to 928 psi g
Versions Available Compact
Outputs Transistor, contactless
Options Hygienic and marine approvals
Key Applications For use in liquids and slurries, for point level measurement, overfill, and dry run protection in chemical, oil and gas, pharmaceutical, food and beverage, and general industries
SITRANS LVL200
Detects liquid and slurry levels while monitoring for corrosion and damage.
Test function including remote options
Fault monitoring for corrosion, loss of vibration, and line break to the piezo drive
Compact design for tight spaces
Short insertion length starting at 40 mm (1.57″)
Extreme pressure and temperature options
Detail
Range 40 mm to 4000 mm (1.57″ to 13 ft)
Process Temperature -196 to 450 °C (-321 to 842 °F)
Process Pressure -1 to 160 bar (-14.5 to 2320 psig)
Versions Available Compact, rod, and high temperature
Outputs Relay, NAMUR, transistor, 8/16 mA, contactless
Options SIL 2, hygienic, and marine approvals
Extreme pressures and temperatures options
Remote testing
Key Applications For use in liquids and slurries, for point level measurement, overfill, and dry run protection in chemical, oil and gas, pharmaceutical, food and beverage, and general industries
SITRANS LVS100
Measures dry bulk solids in bins, silos, and hoppers.
Easy set-up with no calibration necessary and a rotatable enclosure
Suitable for low bulk density materials starting at 30 g/l (1.9 lb/ft³)
Adjustable sensitivity for varied applications
Detail
Range 170 mm to 4 m (6.7″ to 13 ft)
Process Temperature -40 to 150 °C (-40 to 302 °F)
Process Pressure Up to 10 bar g (145 psi g)
Versions Available Rod, compact
Outputs DPDT relay
Options –
Key Applications Dry bulk solids in bins, silos, hoppers or settled solids in the mining, cement, food, power, plastics, or general industries
SITRANS LVS200
Measures dry bulk solids while monitoring corrosion and damage.
Easy set-up with no calibration necessary and a rotatable enclosure
Suitable for low bulk density materials starting at 30 g/l (1.9 lb/ft³)
Adjustable sensitivity for varied applications
Detail
Range Rigid extension: 165 mm to 4 m (6.5″ to 13 ft)
Cable extension: 700 mm to 20 m (27.5″ to 65 ft)
Process Temperature -40 to 150 °C (-40 to 302 °F)
Process Pressure Up to 10 bar g (145 psi g)
Versions Available Compact, liquids/solids interface, rod and cable
Outputs Relay or DC PNP, 8/16 mA or 4-20 mA, and NAMUR
Options Detection of solids within liquid
30 bar pressure
Stainless steel 316L
Universal power supply
Key Applications Dry bulk solids in bins, silos, hoppers or settled solids within liquids (interface version) in the mining, cement, food, power, plastics, or general industries
Continuous Level Measurement
The continuous eyes and ears of your operations. Processes in your facility are constantly changing – so you’d better know what’s where and how much you have, at all times. Siemens continuous level measurement features a full range of technologies for your exact application, including interface detection. With intuitive setup, world-class accuracy and a global network of support.
Level Controllers
After driving the market in ultrasonic level controllers for the past 40 years, Siemens has evolved its industry-leading solutions to include control for 80 GHz radar sensors. Need high-accuracy open channel monitoring? How about flexible control with multiple relays and ultrasonic? Or perhaps you need a reliable controller for long-range, high-frequency radar? We have you covered.
Ultrasonic level measurement
Field-proven in more than a million applications worldwide – Siemens ultrasonic level devices can be found in nearly every market. And there’s a reason why they continue to be the industry standard for so many applications. Accuracy. Price point. Durability. Ease of use.
Radar level measurement
Real intelligence built on experience! It’s time to ask: what does a level device’s experience offer your operations? What makes your job easier? Manage materials better? Optimize inventory ordering? And, increase efficiency and save you money? Our radar transmitters bring answers to these challenges, based on signal processing experience gained from over a million level instruments worldwide.
Guided wave radar level measurement
SITRANS LG series are guided wave radar transmitters for continuous level, level and interface, and volume measurements of liquids and solids. They are unaffected by change in process conditions, high temperatures and pressures, and steam. Quick and easy setup with local four-button programming and menu-driven quick start wizard gets you operational in minutes, saving you time and money.
Capacitance level measurement
SITRANS LC capacitance instruments are contacting level and interface devices for measuring liquids and some solids. Inverse frequency change technology delivers high resolution, fast reaction time, and consistently accurate measurements of even the smallest level changes, in short spans, or in materials with a low dielectric constant (dK). With simple two-button start-up and extremely low maintenance and recalibration needs, capacitance technology will save you time and money.
Gravimetric level measurement
SIWAREX weighing technology produces high-precision gravimetric measurement without ever contacting the material and is completely independent from conditions inside the vessel. The devices can be used stand alone or in combination with Siemens DCS systems like SIMATIC S7 300, 400, 1200, and 1500. These weighing modules are an excellent choice for legal-for-trade applications, with dependable accuracy and reliability in a wide range of industries.
Hydrostatic level measurement
SITRANS P hydrostatic level technology can handle extreme chemical and mechanical loads as well as electromagnetic interference. Cable versions allow for installation in small tubes as well as over long ranges. This technology is widely applied in the environmental, chemical, and petrochemical industries.
Level Controllers
SITRANS LUT400
SITRANS LUT400 are compact, single point, long range ultrasonic controllers for continuous level or volume measurement of liquids, slurries, and solids, and high accuracy monitoring of open channel flow.
SITRANS LUT420
Level Controller: level or volume measurement of liquids, slurries, and solids, as well as basic pump control functions, and basic data logging capability.
SITRANS LUT430
Level, Volume, Pump and Flow Controller: includes all features of the LUT420 plus a full suite of advanced pump control and alarm functionality, open channel flow monitoring, and basic flow data logging capability.
SITRANS LUT440
High Accuracy OCM: Our most featured, highest accuracy model. Includes all features of the LUT430, plus the industry’s best accuracy (± 1 mm within 3 m), full suite of advanced control functionality, and enhanced flow logging capability.
Detail
SITRANS LUT420 / SITRANS LUT430
Range: 0.3 to 60 m (1 to 196 ft), transducer dependent
Compatible transducers: All Echomax and ST-H series transducers
Accuracy: – Standard operation: ± 1 mm (0.04″) plus 0.17 % of measured distance
– ± 3 mm (0.12 inch) within 4 m (13 ft) range
Comunications or Outputs: HART: EDDs for SIMATIC PDM, Emerson AMS Device Manager, and Field Communicator 375, plus SITRANS DTM for FDTs
USB: Integrated web browser for local programming
Key Applications: Wet wells, reservoirs, flumes/weirs, chemical storage, liquid storage, hoppers, crusher bins, dry solids storage
Detail
SITRANS LUT440
Range: 0.3 to 60 m (1 to 196 ft), transducer dependent
Compatible transducers:All Echomax and ST-H series transducers
Accuracy:- Standard operation: ± 1 mm (0.04″) plus 0.17 % of measured distance
– ± 3 mm (0.12 inch) within 4 m (13 ft) range
– High accuracy OCM: ± 1 mm (0.04″), within 3 m (9.84 ft) range
Comunications or Outputs: HART: EDDs for SIMATIC PDM, Emerson AMS Device Manager, and Field Communicator 375, plus SITRANS DTM for FDTs
USB: Integrated web browser for local programming
Key Applications: Wet wells, reservoirs, flumes/weirs, chemical storage, liquid storage, hoppers, crusher bins, dry solids storage
MultiRanger and HydroRanger 200 HMI
MultiRanger/HydroRanger 200 HMI is a versatile short- to medium-range ultrasonic single- and multi-vessel level monitor/controller for virtually any application in a wide range of industries.
Detail
Range 0.3 to 15 m (1 to 50 ft)
Compatible transducers ST-H and Echomax series XPS-10, XPS-15/15F, and XRS-5
Relays 6 relays: rating 5 A at 250 V AC, non-inductive
mA output 0 to 20 mA or 4 to 20 mA
Communications or Outputs
– RS-485 with Modbus RTU or ASCII
– Compatible with SIMATIC PDM via Modbus RTU, PROFINET, or PROFIBUS
– SmartLinx cards for PROFINET, Modbus TCP/IP, Ethernet/IP, PROFIBUS DP, DeviceNet
Key Applications Wet wells, flumes/weirs, bar screen control, hoppers, chemical storage, liquid storage, crusher bins, dry solids storage
MultiRanger and HydroRanger 100/200
MultiRanger/HydroRanger is a versatile short- to medium-range ultrasonic single- and multi-vessel level monitor/controller for virtually any application in a wide range of industries. MultiRanger/HydroRanger can be used on different materials, including fuel oil, municipal waste, acids, woodchips or on materials with high angles of repose.
Detail
Range 0.3 to 15 m (1 to 50 ft)
Compatible transducers ST-H and Echomax series XPS-10, XPS-15/15F, and XRS-5
Relays 6 relays: rating 5 A at 250 V AC, non-inductive
mA output 0 to 20 mA or 4 to 20 mA
Communications or Outputs
– RS-485 with Modbus RTU or ASCII
– Compatible with SIMATIC PDM via Modbus RTU
– SmartLinx cards for PROFIBUS DP, DeviceNet
Key Applications Wet wells, flumes/weirs, bar screen control, hoppers, chemical storage, liquid storage, crusher bins, dry solids storage
SITRANS LT500
SITRANS LT500 is the next evolution of level, flow, and pump controllers for radar and ultrasonic transmitters – or any 2-wire 4-20 mA device. It is the first choice for radar sensor measurements at 80 GHz and features single and dual point measurements, 6 relays, and Modbus RTU, HART, PROFIBUS DP, PROFIBUS PA, PROFINET.
Detail
Measurement types Level, distance, space, volume, differential, average, head and Open Channel Flow
Measuring range Sensor based with SITRANS LR110/LR120 and SITRANS Probe LU240
Communications
Up to three 4 to 20 mA outputs. Fieldbus option cards: Modbus RTU, HART, PROFIBUS DP, PROFIBUS PA, PROFINET
Languages EN, DE, FR, ES, CN, RU, PT, IT, JP, SW, DU, DA, FI, PO
Outputs 2 x 4 … 20 mA
+ 1 x 4-20 mA output with HART card
6 x relay
Fieldbus
Ultrasonic Level Measurement
Field-proven in more than a million applications worldwide – Siemens ultrasonic level devices can be found in nearly every market. And there’s a reason why they continue to be the industry standard for so many applications. Accuracy. Price point. Durability. Ease of use.
SITRANS Probe LU240
SITRANS Probe LU240 ultrasonic level transmitter is a cost-effective, compact, intelligent level solution for liquid chemical inventory, monitoring small process vessels, and level measurement in the environmental industry. The optional SITRANS AW050 provides Bluetooth® wireless technology for fast and effortless commissioning, diagnostics, and maintenance with SITRANS mobile IQ.
Detail
Range 0.2 to 12 m (8 inch to 40 ft)
Process Temperature -40 to 85 °C (-40 to 185 °F)
Output 4 to 20 mA/HART
Wetted Parts ETFE or PVDF transducers for chemical compatibility
Accuracy
6 and 12 m versions: 0.15 % of range or 6 mm (0.25 inch) ±2 mm (0.08 inch) on ranges 4 m or less
3 m version: ±10 mm (0.39 inch)
Communications or Outputs
– HART 7
– EDD for SIMATIC PDM for remote configuration and diagnostics
– FDT such as PACTware or Fieldcare via SITRANS DTM
– Optional Bluetooth wireless technology with SITRANS AW050 adapter
Key Applications Water/wastewater chemical storage vessels, small bulk hoppers, filter beds, liquid storage vessels
SITRANS Probe LU
SITRANS Probe LU is a 2-wire loop-powered ultrasonic level measurement transmitter for measuring storage vessels, filter beds, and open channel flow in the water and wastewater, food, and chemical industries.
Detail
Range 0.25 to 12 m (0.8 to 39 ft)
Process temperature -40 to 85 °C (-40 to 185 °F)
Output
– 4 to 20 mA/HART
– PROFIBUS PA
Wetted Parts ETFE or PVDF transducers for chemical compatibility
Accuracy 0.15% of range or 6 mm (0.25″)
Communications or Outputs
– PROFIBUS PA
– EDD for SIMATIC PDM for remote configuration and diagnostics
Key Applications Chemical storage vessels, filter beds, liquid storage vessels
Radar Level Measurement
Real intelligence built on experience! It’s time to ask: what does a level device’s experience offer your operations? What makes your job easier? Manage materials better? Optimize inventory ordering? And, increase efficiency and save you money? Our radar transmitters bring answers to these challenges, based on signal processing experience gained from over a million level instruments worldwide.
Interface Level Measurement
Whether it’s water and oil or two wildly different chemicals, some things just don’t mix. Luckily, Siemens interface technology measures level of multiple materials with ease and precision. Capacitance and guided wave radar technology provide results-driven level measurement in all your interface applications, giving you the accuracy and continuous monitoring to keep operations running smoothly.
SITRANS LC300 – capacitance level
SITRANS LC300 is an inverse frequency shift capacitance continuous level transmitter for liquids and solids or liquid interface applications. Materials with low or high dielectric properties are accurately measured and Active-Shield technology helps in ignoring the effects of buildup near vessel nozzle.
Select
Detail
Range
– Rod: 5.5 m (18 ft)
– Cable: 25 m (82 ft)
Process temperature -40 to 200 °C (-40 to 392 °F)
Process pressure Up to 35 bar g (511 psi g)
Communications or Outputs 2-wire (4 to 20 mA) current loop design
Options Stilling well version
Key Applications Standard industrial applications in chemical, hydrocarbon processing, food and beverage and mining, aggregate and cement industries
SITRANS Probe LU
SITRANS Probe LU is a 2-wire loop-powered ultrasonic level measurement transmitter for measuring storage vessels, filter beds, and open channel flow in the water and wastewater, food, and chemical industries.
Detail
Range 0.25 to 12 m (0.8 to 39 ft)
Process temperature -40 to 85 °C (-40 to 185 °F)
Output
– 4 to 20 mA/HART
– PROFIBUS PA
Wetted Parts ETFE or PVDF transducers for chemical compatibility
Accuracy 0.15% of range or 6 mm (0.25″)
Communications or Outputs
– PROFIBUS PA
– EDD for SIMATIC PDM for remote configuration and diagnostics
Key Applications Chemical storage vessels, filter beds, liquid storage vessels
Guided wave radar level measurement
SITRANS LG series are guided wave radar transmitters for continuous level, level and interface, and volume measurements of liquids and solids. They are unaffected by change in process conditions, high temperatures and pressures, and steam. Quick and easy setup with local four-button programming and menu-driven quick start wizard gets you operational in minutes, saving you time and money.
SITRANS LG240
Specifically designed for your hygienic and aggressive chemical application requirements. Complete with a wide range of probe materials.
SITRANS LG250
Highly flexible solution for liquid level and interface applications. Extremely versatile offering solutions for storage, separation of materials or difficult ammonia applications.
SITRANS LG260
Ideal for measuring level in medium range solids applications including; grains, plastics, and cement.
SITRANS LG270
Offers configuration options for extreme conditions including high temperature and high pressure applications such as: harsh applications found in chemical, HPI and energy industries for example, LPG gas tanks, steam boilers and distillation columns
Detail
Range 0.3 to 75 m (1 to 246 ft)
Process Connections Types and Sizes
Threaded from ¾”
Flanged from DN 25, ASME from 1″
Hygienic fittings
Process Temperature -196 to 450 °C (-321 to 842 °F)
Process Pressure -1 to 400 bar (-100 to 40 000 kPa)
Accuracy Starting at ±2 mm (0.08″)
Communications 4 to 20 mA/HART, PROFIBUS, Modbus, and FOUNDATION Fieldbus
Typical Applications Level and interface in liquids, and level in solids applications. Ideal for oil and gas, food, pharmaceutical and general industries