ABOUT FEATURES APPLICATION OPERATION TECHNICAL CONTACT

KNOW MORE

ABOUT LFV

Trumen vibrating fork point level switch model

LFV suitable for all types of flow able liquids

in all process industries. It gives reliable

measurement and does not affected due to

material flow, vibrations in the tank, changing

the media properties and material build-up in

the sensor.

Trumen LFV available in three different design

like ½”, ¾” and 1” depends upon the mounting

requirements.

KNOW MORE

ABOUT TRUMEN

Trumen came into existence in 2009 and

initially started with manufacturing of Tuning

Fork Level Switches for liquid and solid

applications. With time, the manufacturing

range increased with addition of Capacitance

Level Transmitter & Capacitance Level

Switches, RF Admittance Level Switches,

Rotating Paddle Level Switches, Conductivity

Type Level Switches, Vibrating Rod Level

Switches, Hydrostatic Level Transmitter, Radar.

FEATURES

Compact Size.

Calibration-less operation.

Universal power supply on same terminals (15 to 80VDC or 15 to 260VAC).

Inbuilt settable switching delay 5 sec.

Tropicalized sealed electronics module & easy to maintenance.

Customized process connection threaded / flanged / hygienic & dairy fittings etc.Various output options like transistor PNP/NPN , NAMUR, 8/16mA current output. Etc.

APPROVALS

CE Certification.

IP-68/ 66.

Exd Suitable for gas group IIC, T6 as per IEC 60079-1:2007 & IEC 60529:2001.

Ex ia suitable for gas group IIC T6, as per, IS/IEC 60079-11:2006.

Vibration test comply as per IEC standard 60068-Part 2-6.

Functionality and environmental test of all instruments RFI-EMC, voltage transient and

electrical functionality test as per IEC 61000.

APPROVALS

Trumen vibrating fork point level switch model LFV is used in different applications like -

ITrumen vibrating fork is used in different applications like, Water, oil, milk, chemicals,

solvents and liquids having viscosity up-to 10,000Cp.

Suitable for hazardous liquids & chemicals.

Process temperature maximum 200° C / 250° C (available on requirement).

Operating pressure 20 bar maximum.

OPERATING PRINCIPLE

Electronics of LFV excites

the piezoelectric crystals

inside the tuning fork

which makes the fork tines

vibrate at their natural

resonance frequency in

free air.

When fork tines are

immersed in liquid, the

frequency of fork vibration

falls due to the density of

liquid.

This change in frequency

is detected by the

electronic circuit.

OPERATION

Open the cover of Trumen LFV you can see there are 9 terminals. Terminal

1, 2 & 3 are for auxiliary power supply. Terminal 4, 5, 6 & 7, 8, 9 are for relay

output.

Connect the power supply either 15 to 80VDC or 15 to 260VAC on

terminal 1 & 2 and plant earth on terminal number 3. Now switch on the power.

Trumen LFV starts vibrating in air. Power LED is on and status level is in OFF

condition.

Now fill the liquid up-to the fork tines level.

You can see the status LED of LFV is on means liquid reaches to the desired level.

Now empty the liquid, you can see the status LED is OFF means material goes

below the desired level.

Relay status also change from NC to NO.

There are 4 DIP switches provided on connection panel. Via DIP switch no.1 we can set the

sensitivity that means if the density of liquid is low density fluids we need to on switch

no.1 in this conditon LFV will sense the liquid. Keep it turned off for normal density fluids.

Switch no.2 is to set dry delay means off delay. ON the DIP switch no.2 and empty the

material. LFV will wait for 5 sec once the material goes below the sensor and after 5 sec it

generates switching. During the delay cycle sensor ignore the turbulence.

Switch no.3 is to set wet delay means on delay. ON the DIP switch no.3 and fill the

material. LFV will wait for 5 sec once the material touches the sensor and after 5 sec it

generates switching. During the delay cycle sensor ignore the turbulence.

Switch no.4 is to set failsafe means the instrument should be in alarm condition if the

sensor faces power failure. When the sensor is installed for high level keep the DIP switch

no.4 is turned off i.e failsafe high or maximum and when the sensor is installed for low

level keep the DIP switch no.4 turn on i.e. failsafe low or minimum.

You can easily replace the electronics as shown

In case of any further technical support please contact our sales and support team.

1.

2.

3.

4.

5.

6.

7.

8.

9.

10.

11.

12.

13.

Device operation and settings:

Trumen LFV is very easy to operate

Connection Terminals

+ of DC or Live of AC Supply input

- of DC or Neutral of AC Supply input Supply:

15 to 80VDC or 15 to 260VAC 50/60Hz

Earth terminal for safety

Normally connected terminal of contact 1

Common terminal of contact 1

Normally open terminal of contact 1

Normally connected terminal of contact 2

Common terminal of contact 2

Normally open terminal of contact 2

TYPICAL MOUNTING TYPICAL MOUNTING

TECHNICAL DATA & INSTRUCTION MANUAL

TESTIMONIALS

WHAT OUR

HAPPY CLIENTS

SAYS ABOUT US

TRUMEN LFV USERS

TRUMEN EXPORT TO

Quick Links

ABOUT LFV FEATURES APPLICATION OPERATING

PRINCIPLE

OPERATION TECHNICAL DATA &

INSTRUCTION MANUAL

TRUMENT AT A

GLANCE

39, Mangal Nagar, Behind Sai Ram Plaza,

AB Road, Indore, Madhya Pradesh

0731-4972065, +91-7049333121,

+91-7389933120, +91-8109062425

support@trumen.in

sales@trumen.in

Copyright © 2019- Trumen | Designed & Managed by Digital Chowkidar