Vibrating Level Switches

Operating Instructions SITRANS LVL200H Relay (2 x SPDT) with SIL

Application

SITRANS LVL100 is a compact level switch designed for industrial use in all areas of process technology and can be used for material detection with liquids and slurries. With an insertion length of only 40 mm (1.57 inch), SITRANS LVL100 can be mounted in small pipes and confined space applications. It is virtually unaffected by the chemical and physical properties of the liquid. The LVL100 can be used in difficult conditions including turbulence, air bubbles, foam generation, buildup, or external vibration.

The tuning fork is piezoelectrically energized and vibrates at a mechanical resonance frequency of approximately 1 200 Hz. The vibration frequency changes when the tuning fork is covered by the medium. This change is detected by the integrated oscillator and converted into a switching command. The integrated electronics evaluate the level signal and output a switching signal to connected devices.

Key Applications: for use in liquids and slurries, for level measurement, overfill, and dry run protection

Range	40 mm (1.5") insertion
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

Benefits

Proven vibrating level switch technology for liquids
Compact insertion length of 40 mm (1.57 inch) for confined space applications
Available starting at 1/2" threaded process connections
Fault monitoring for corrosion, loss of vibration, or line break to the piezo drive
Integrated test function to confirm correct operation

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SIEMENS SITRANS LVL 200 Vibrating Level Switch

The SITRANS LVL200 is a standard vibrating level switch designed for material detection in liquid and slurry applications, including overflow, high, low, and demand scenarios, as well as pump protection. Notably, it is suitable for use in Safety Integrity Level 2 (SIL-2) applications, offering a reliable solution for critical safety-related processes.

Catalog Sheet Pointek LVL200

Operating Instructions SITRANS LVL200H Two-wire (8/16 mA) with SIL

Operating Instructions SITRANS LVL200H Transistor (NPN/PNP) with SIL

Operating Instructions SITRANS LVL200S, LVL200E, Two-wire (8/16 mA),SIL

Lock Fitting for SITRANS LVL200E (Pressure range: -1 to 16 bar)

Lock Fitting for SITRANS LVL200E (Pressure range: -1 to 64 bar)

Lock Fitting for SITRANS LVL200E (Unpressurized operation)

Operating Instructions SITRANS LVL200S Two-wire 8/16 mA

Operating Instructions SITRANS LVL200H Two-wire 8/16 mA

Operating Instructions SITRANS LVL200E Two-wire 8/16 mA

Operating Instructions SITRANS LVL200H Transistor (NPN/PNP)

Operating Instructions SITRANS LVL200E Transistor (NPN/PNP)

Operating Instructions SITRANS LVL200S Transistor (NPN/PNP)

Operating Instructions SITRANS LVL200H Relay

Operating Instructions SITRANS LVL200E Relay (DPDT)

Operating Instructions SITRANS LVL200S Relay (DPDT)

Operating Instructions SITRANS LVL200 Relay Electronics Module

Operating Instructions SITRANS LVL200S (Contactless Electronic Switch)

Level Measurement Brochures

Application

SITRANS LVL200 is a level switch designed for industrial use in all areas of process technology and can be used with liquids and slurries. With a tuning fork insertion length of only 40 mm (1.57 inch), SITRANS LVL200 can be mounted in small pipes and applications with confined space. The LVL200 can be used to measure products with a minimum density of > 0.5 g/cm³ (0.018 lb/in³). The LVL200 can be used in difficult conditions including turbulence, air bubbles, foam generation, buildup, or external vibration

SITRANS LVL200 continuously monitors faults via frequency evaluation, providing early detection of strong corrosion or damage on the tuning fork, loss of vibration, or a line break to the piezo drive.

The tuning fork is piezoelectrically energized and vibrates at its mechanical resonance frequency of approximately 1 200 Hz. The vibration frequency changes when the tuning fork is covered by the medium. This change is detected by the integrated oscillator and converted into a switching command. The integrated electronics evaluate the level signal and output a switching signal, directly operating connected devices.

The optional signal conditioner provides a remote test feature to ensure continuous product reliability.

Key Applications: for use in liquids and slurries, for level measurement, overfill, and dry run protection

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

Benefits

Proven vibrating level switch technology for liquids
Compact insertion length of 40 mm (1.57”) for confined space applications
Fault monitoring for corrosion, loss of vibration or line break to the piezo drive
SIL 2 qualified for high level and dry run applications
Hygienic process connections

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SIEMENS SITRANS LVS 100 Vibrating Level Switch

The SITRANS LVS100 is a vibrating point level switch specifically designed for material detection in bulk solids. Its application is ideal for scenarios where precise detection of material levels in bulk solids is required.

Catalog Sheet LVS100

Operating Instructions LVS100/200

Application

SITRANS LVS100 detects high, low or demand levels of dry bulk solids in bins, silos or hoppers.

SITRANS LVS100 has a compact design and can be top, side, or angle mounted. The vibrating fork design ensures the tines are kept clean. The unique design of the fork and crystal assembly eliminates false high level readings even if tines become damaged.

A signal from the electronic circuit excites a crystal in the probe causing the fork to vibrate. If the fork is covered by material, the change in vibration is detected by the electronic circuitry which causes the relay to change state after a one second delay. When the fork is free from material pressure, full vibration resumes and the relay reverts to its normal condition.

Key Applications: dry bulk solids in bins, silos, hoppers

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
Key Applications	Dry bulk solids in bins, silos, hoppers or settled solids in the mining, cement, food, power, plastics, or general industries

Benefits

High resistance to mechanical forces
Sliding sleeve options for adjustable insertion length and ease of cleaning
Rotatable enclosure for ease of installation and wiring
Suitable for point level detection of materials starting at a bulk density of 30 g/l (1.9 lb/ft3)
Customer desired extensions up to 4 000 mm (157.48 inch)

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SIEMENS SITRANS LVS 200 Vibrating Level Switch

The SITRANS LVS200 is a vibrating point level switch specifically designed for material detection in bulk solids. Its application is ideal for scenarios where precise detection of material levels in bulk solids is required.

Catalog Sheet LVS200

Operating Instructions LVS100/200

Application

The standard LVS200 detects high, low, or demand levels of dry bulk solids in bins, silos, or hoppers. The liquid/solid interface version can also detect settled solids within liquids or solids within confined spaces such as feed pipes. It is designed to ignore liquids in order to detect the interface between a solid and a liquid.

A pipe extension version is available with either the standard or liquid/solid interface electronics and fork, separated by a customer supplied 1 inch pipe.

SITRANS LVS200 has an optional 4 to 20 mA output for monitoring buildup on the fork to determine when preventative maintenance should be performed in sticky applications.

The LVS200 has a compact design and can be top, side or angle mounted. The vibrating fork design ensures the tines are kept clean. The unique design of the fork and crystal assembly eliminates false high level readings even if tines become damaged.

Key Applications: dry bulk solids in bins, silos, hoppers or settled solids within liquids (interface version)

Range	Rigid extension: 165 mm to 4 m (6.5" to 13 ft)
Range	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

Benefits

High resistance to mechanical forces
Strong vibration resistance to high bulk material loads
Rotatable enclosure
Suitable for low density material: standard version, 20 g/l (1.3 lb/ft³); liquid/solid interface version, 50 g/l (3 lb/ft³), and low density option min. 5 g/l (0.3 lb/ft³)
Customer desired extensions up to 20 000 mm (787”)
Optional detection of solids within liquid
Durable short fork option with 165 mm (6.5 inch) insertion length

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SIEMENS SITRANS LVS 300 Vibrating Level Switch

The SITRANS LVS300 is indeed a vibrating rod point level switch designed for high, low, or demand level detection of bulk solids. It's a reliable and cost-effective solution for monitoring and controlling levels of bulk solids in various industries

Catalog Sheet LVS300

Operating Instructions LVS300