Rotary paddle switch for point level and material detection in bulk solids.
Adapting to harsh conditions
The SITRANS LPS200 is an essential component of any bulk solids operation. The durable paddle switch accurately detects varying conditions on a range of materials. Additionally, the SITRANS LPS200 can be optimised for low-density solids and high temperatures.
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
Key features
- Proven paddle switch technology for bulk solids
- High integrity mechanical seal
- Universal power supply options available
- Unique friction clutch mechanism prevents damage from falling material
- Rotatable enclosure for convenient wiring
- Optional paddles for use with low density materials
- Small paddle makes for simple installation through existing process connection
- High temperature model and optional extension kit available
- Optional fail-safe configuration detects loss of rotation
- Functional Safety (SIL 2). Device suitable for use in accordance with IEC 61508 and IEC 61511
Application
The paddle switch technology detects full, empty, or demand conditions on materials such as grain, feed, cement, plastic granulate, and wood chips. The paddle switch can handle bulk densities as low as 15.06 g/l (0.94 lb/ft3) with the optional rectangular vane or 100 g/l (6.25 lb/ft3) with the standard measuring vane.
A low revolution geared motor with slip clutch drives a rotating measuring vane which senses the presence of material at the mounted level of the LPS200. As material comes into contact with the rotating paddle, rotation stops, which changes the microswitch state. When the paddle is no longer covered by material, rotation resumes and the relay reverts to its normal condition.
The LPS200 has a rugged design for use in harsh conditions in the solids industry. The sensitivity of the paddle can be adjusted for varying material properties like buildup on the vane.
The LPS200 comes in a variety of configurations including compact, extended and cable extension. It is equipped with a standard vane which is effective in most applications, but can be configured with a hinged or rectangular vane for increased sensitivity for light materials.
- Key Applications: bulk solids such as grain, feed, cement, plastic granulate, wood chips
Application highlights
Clinker storage silo
- SITRANS LPS200 with rigid extension
- High level demand detection of clinker
- Temperatures > 350°C / 662°F
- Horizontally installed for demand detection
Power
- SITRANS LPS200 with rigid vertical extension
- Detection of sawdust
- Temperatures can reach 600 °C / 1112°F
- Vertically installed
Asphalt and paving
- SITRANS LPS200 standard
- Rugged durability withstands tough environment
- Rotation monitoring alarms if device stops
- SIL options for safety applications
Carbon black
- SITRANS LPS200 with angled extension
- Low detection and demand detection of carbon black
- Application has tendency for buildup
- Angled orientation ensures continued rotation even in heavy buildup applications
Technical Specification
SITRANS LPS200 | ||
|---|---|---|
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) | |
Versions Available | Starting at 15 g/l (0.9 lb/ft³) with optional vane
| |
Outputs | 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 | |
We are Siemens trusted and approved distribution partner.
As a Value Added Reseller in Siemens’ Approved Partner network, Parmley Graham is a proven supplier of a wide range of quality products in the UK and globally.
Find out more how this will benefit you or check Siemens Configurator.
