Trumen is one of India’s leading manufacturer, exporter supplier of Level Switches, Level Sensors, Level Indicators Level Transmitters in India, Indonesia,etc. Trumen is a technocrat driven organization aimed at providing top-of-the-range and high quality level measurement and process control instruments. Formed by the pioneers who devoted their respective lives in development, design and delivery of solution to the problems faced in the field of level sensing and process measurements. Trumen has a fixed point agenda about "sensing matters", and each device created at Trumen is thoroughly tested to pass the quality norms set in-house, in order to give the best performance in all operating conditions. Address: 39, Mangal Nagar, Behind Sai Ram Plaza, Near Rajeev Gandhi Circle, AB Road, Indore, Madhya Pradesh 452001 Contact: 0731 497 2065 #CapacitanceLevelTransmitter #CementLevelSensor #CeramicPressureTransmitter #ceramicdiaphragmpressuretransmitter #ceramicsensorpressuretransmitter #Conductivitylevelswitch #twopointlevelswitch #levelswitchfordairy #flyashlevelswitch #WFIleveltransmitter #levelsensorsupplierinindia

1. LMFS... Approvals & Certifications:
Frequency Sweep
Level Switch
Technical Specification Document
Specifications
lmfs-qrd-p1-190406.svg
Features
Model LMFS
For General Industrial Applications
Frequency Sweep for material type detection
Compact design with two independent outputs
Suitable for media distinction
Liquid fork simulation requires no calibration
Process temperature -40 ... 125 °C, and 150 °C for 1 hour
Suitable for materials with di-electric constant 𝛆r >1.5
Multicolor LED switch indicator, indicates type and output
Maintenance free
Fully field configurable without any special configurator
Three output types are PNP, NPN, Push-Pull field configurable
The Level Switch LMFS is capable of faithfully detecting industrial fluids
and powders using Frequency Sweep technology. Utilizing the resonance
of electrical capacitance created by media di-electric and conducitvity, LMFS
learns the signature of the media to be sensed and thus performs better than
other level detection methods for fluids and powders.
A 50 to 300Mhz sweep signal of very low power (nano-watt) is applied to
the electromagnetic resonating circuit formed by material capacitance,
an analysis section scans the amplitude of resulting resonance, and thus
assigns a frequnecy-amplitude relationship for a material type.
Since LMFS can identify materials distinctively, it is capable of media
saperation and hence is designed to utilise the dual output and multi-color
LED to provide different output for different material being sensed by it.
LMFS is designed to keep all settings at field level without any special
requirement of configurator.
LMFS is able to work as Liquid Fork Simulator capable of detecting
fluids without any calibration. Calibration is required for media separation
and powder detection.
Product Overview
Sensor
Radiated signal 50...300 MHz
Process connection NPT / BSP 1", 11⁄4", 11⁄2", 2" etc
Insulating material PEEK
Mechanical data
Housing Stainless Steel
Amb. temperature -40...70 °C
Process temperature -40...125 °C
Max. 150 °C for < 1 hour, Tamb 40 °C
Protection class IP 66 / 68 (as per IS-13947)
Media pressure Max. 100 bar
Vibrations As per IEC 60068-2-6, sinusodial
Installation Any position
Surface roughness wetted Stainless Steel Ra < 0.8 μm
parts PEEK Ra < 0.05 μm
Electrical connection
Plug M12 Plastic or Stainless steel 304
Cable 5 to 10 meters, 4 wire + shield
Other electrical data
Power supply 9...55 VDC, 24 mA max.
Damping 0.1 minimum settable to max 25 sec.
Power-up delay <2 sec.
Hysteresis ± 1 mm
Repeatability ± 1 mm
Reaction time 0.1 sec. (100 mS)
Reverse polarity protection Yes
Output
Output (active) Max. 50mA and 100mA (configurable) short-circuit and
high-temperature protected
Output type PNP, NPN, Push-Pull field configurable
Output polarity NO and NC
Active “High” PNP (Supply Vdc-1.0V) ± 0.5V ; Rload 10 kOhm
Active “Low” NPN (Supply 0V+1.0V) ± 0.5V ; Rload 10 kOhm
Push-Pull (within 1.0V ± 0.5V of Supply Limit)
Off leak current ± 20μA Max.
Factory Settings
Sensing Mode Liquid Fork Simulator (Sense all fluids)
Output As per Order (PNP/NPN/Push-Pull)
39 Mangal Nagar, B/H Sai Ram Plaza, Nr. Rajiv Gandhi
Circle, AB Road, Indore, MP, 452 001, India
Phone: +91-731-497 2065
email: sales@trumen.in web:www.trumen.in
Trumen Technologies Pvt. Ltd.
(an ISO 9001:2008 company)
®
sensing matters
Specifications are subject to change without prior notice
®
sensing matters