LVL-A7-BG4B-E5PU-CG-EMS Vibration Limit Switch

Teknik Veriler

Measuring method

The tuning fork is brought to its resonance frequency by means of a piezoelectric drive. If the tuning fork is covered by liquid, this frequency changes. The electronics monitor the resonance frequency and indicate whether the tuning fork is freely vibrating or is covered by liquid.

Construction type

device with short tube

Series

LVL-A*

Connection

This device may be used with any sequential circuit, as long as the circuit can support the electrical circuit values of the switching elements.

Rated voltage

U r 10 ... 35 V DC

Fusing

external 500 mA slow

Current consumption

< 15 mA

Power consumption

975 mW

Residual ripple

5 V ss at 0 ... 400 Hz

Measured variable

density

Measuring range

min. 0.7 g/cm 3

Output type

switching output

Switching current

max. 250 mA

Directive 2014/30/EU

EN 61326-1:2006 , EN 61326-2-3:2006

Directive 2004/108/EC

EN 61326-1:2006 , EN 61326-2-3:2006

Electromagnetic compatibility

NE 21

Degree of protection

IEC 60529

Shock resistance

EN 60068-2-27

Vibration resistance

EN 60068-2-64

Climate class

DIN EN 60068-2-38/IEC 68-2-38

Reference operating conditions

- ambient temperature: 25 °C (+77 °F) - process pressure: 1 bar (14.5 psi) - fluid: water (density: approx. 1 g/cm 3 , viscosity: 1 mm 2 /s) - medium temperature: 25 °C (+77 °F) - density setting: > 0.7 g/cm 3 - switching time delay: standard (0,5 s, 1 s)

Measured value resolution

< 0.5 mm

Measuring frequency

approx. 1100 Hz in air

Switching point

13 mm ± 1 mm