Overview

The LCT Liquid Ultrasonic flowmeter adopts the time difference method to calculate the flow and uses advanced micro-processing digital technology, which is especially suitable for the flow measurement of regional heating, heat source plant, heat exchange station, HVAC (air conditioning refrigeration equipment), tap water and other liquids.

Operational Principle

The LCT Liquid ultrasonic flowmeter adopts the measurement principle of time difference method. A sound wave travelling in the direction of flow of the product is propagated at a faster rate than one travelling against the flow, hence the acoustic signal transmission time has a difference (instant difference). The time difference method ultrasonic flowmeter is measured according to the specific principle of the specific relationship between the medium flow speed and the time difference. As long as the time upstream and downstream are accurately determined, the instantaneous flow speed can be found according to the flow speed and its specific relationship and then the instantaneous flow can be caculated.

Product Characteristics

(1) No cut-out online maintenance;

(2) Strong anti-bubble and anti-interference ability;

(3) The sensor resists high temperature and no water leakage;

(4) The dynamic response is up to 200 times per second;

(5) The turn-down rate is above 1:50;

(6) Measure the flow speed of different profiles for the best accuracy;

(7) Full-pass pipe section structure, with no pressure drop and stable flow speed;

(8) Integrated or remote type installation;

(9) 240*128 industrial large screen-LCD display;

(10) Measuring liquid is not affected by electrical conductivity;

(11) One-way up to 5000Hz high-speed pulse output;

(12) One-way standard (4-20) mA current output;

(13) M-BUS communication interface;

(14) RS232/485 interface, standard MODBUS protocol.

Technical Parameter(s)

Nominal general diameter: DN50-DN2000;

Measurement medium(s): clean single liquid;

Medium temperature: ≤130℃;

Accuracy: 1.0%;

Repeatability: 0.2%;

Turn-down rate: above 1:50

Case material: carbon steel; stainless steel;

Power supply: AC220V±10%, 50Hz or（10-36）VDC；

Signal output: pulse equivalent (0.01-9999) L/N (set), stability of 30ppm, standard current (4-20)mA output;

Communication output: M-BUS communication interface, RS232/485 interface, standard MODBUS protocol.

Flow Converter

The flow converter has a hardware temperature compensation circuit and software temperature compensation model, which is more suitable for heating high-temperature water metering compared to other flow meters to ensure the accuracy of flow measurement at different temperatures. Equipped with 6 multi-function buttons, industrial large screen LCD display, optional Chinese and English menu, humanized design and simple operation.

（1）Flow measurement

High-performance measurement chip, instrument instantaneous flow resolution 0.001m³/h, cumulative flow resolution 0.1L.

（2）Pulse output

The instrument can output 1-way of high-speed pulse, range (1-5000)Hz, pulse equivalent(0.01-9999.99)L/N can be set.

（3）Standard current signal output

The instrument can output a 1-way(4-20)mA signal.

（4）Standard current signal input

The instrument supports standard current signal input, measure range (4-20)mA, resolution 0.001mA.

Production Type Selection