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Introduction

Principle & Structure

The ultrasonic level gauge is installed on the sensor above the measured medium. Under the control of the transmitter, the sensor emits a beam of ultrasonic pulses to the surface of the measured object, and the sound wave is reflected by the surface of the object and received by the sensor to convert it into an electrical signal. The time from ultrasonic transmission to being received again is proportional to the distance from the surface of the object being measured by the sensor. The display electronic unit detects the time, and calculates the distance from the surface of the measured object to the sensor according to the known speed of sound at the current temperature. The liquid level measurement value can be obtained through the operation of the CPU.

application

It can ensure that the ultrasonic wave can effectively propagate to the liquid surface, material surface or solid surface to be measured. Such as: storage tanks, troughs, metering boxes, pools, water tanks, wells, canals, granaries, silos, moving objects, etc.

Features

● Integrated design, easy to install

● Two-wire and four-wire wiring with various wiring methods

● Large display window with LCD for easy debugging and observation

● Provide DC4-20mA output and high and low relay output

● Overvoltage and overcurrent protection, lightning protection

● All plastic probe, acid and alkali resistant, suitable for harsh environment

technical parameter

liquid level2 meters 4 meters 8 meters 12 meters (15 meters) 20 meters 30 meters (40 meters)
Material level3 meters 4 meters 6 meters 10 meters 15 meters (20 meters)
temperature range:-40oC ~ + 75oC (LCD : -20oC ~ + 70oC)
Protection level:IP67
Installation methodThread, flange or bracket
parameter settings3-position touch buttons
Shell material:ABS/PVC/PTFE
display form4-digit LCD
output load0-500Ω
Current output4-20mA
relay outputUpper and lower limit alarm control (2 relays)
input powerDC24V(±10%) AC85~265V
cable devicePG13.5/M20 cable plug
Cable diameterF6~F12mm
single wire diameterФ0.5~Ф1.78mm
output resolution0.03% of actual range
Temperature compensationFull range automatic
pressure range±0.1MP
Detection cycle1.5 seconds
Sound beam angle10o(3db) 4.6.8m type
5o(3db) 12.15.20.30.40m horn probe

Selection table

LUD20-Ultrasonic Level Gauge (Level Gauge)

Type of measuring medium

Relatively calm liquid, flat solid

Bulk, granular solid

Measuring range (see range code table)

6m

output

4~20mA output

4~20mA output + 2 switch outputs (5A relay signal)

Power supply

DC24V

AC85~265v
The above selection table does not contain selection codes. For selection, please contact the sales staff or email to sales@kewill-auto.cn to obtain a complete sample.
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