Overview

LCT series ultrasonic flowmeter is a general time difference ultrasonic liquid flowmeter designed by using VLSI and low-voltage wide pulse emission technology. It is suitable for continuous measurement of homogeneous liquid without high concentration suspended particles or gas in industrial environment.

Function Characteristics

1) Hardware modular design, easy production and maintenance operation;

2) Built in 4M byte data recorder and record 200000 lines of timing output or real-time printing data;

3) Electrical isolation RS485 interface, including more than 10 kinds of communication protocols such as MODBUS, M-BUS and FUJI;

4) Electrical isolation 0~20mA or 4~20mA current loop output, optional loop power supply mode (two-wire system);

5) Optional HART Protocol;

6) Heat measurement function in accordance with CJ128 national heat meter standard;

7) 8~36VDC,220VAC power supply mode is optional;

8) It has the functions of manual accumulator and batch controller;

9) The cumulative recording function of month, year and day; and record the cumulative flow, cumulative heat and other data in the first 512 days (every day) and the first 128 months (every month);

10) Record and review the power-off time and other data of the previous 32 times;

11) The interval can be set from 1 second to 24 hours. There are up to 22 outputs;

12) Three analog inputs with accuracy of 0.1%.

Please know the working power supply and model of the product before use to prevent abnormal operation or damage caused by misconnection.

Technical parameters

Suitable for online calibration and inspection measurement of liquid flow in industrial sites. It has the characteristics of simple operation, high measurement accuracy, good consistency, online printing, and long battery power supply time.

1. Accuracy:better than 1%;

2. Repeatability:better than 0.2%;

3. Power supply:AC220V(Standard),  AC110V(Optional);

4. Measurement cycle: 500ms (2 times/second, collecting 128 sets of data/cycle);

5. Battery: Built-in nickel hydrogen rechargeable battery can work continuously for 24 hours;

6.  Installation method: external installation;

7. Display: 2×10 Chinese/English character backlight display (instantaneous flow, cumulative flow, signal status, etc.);

8. Signal output: isolated RS485;

9. Communication protocol: MODBUS protocol, FUJI extension protocol, compatible with communication protocols of similar products from other domestic manufacturers;

10. Print output: Built in thermal integrated printer for real-time or timed printing;

11. Other functions: self diagnosis, indicating whether the current working state is normal;

12. Optional sensors: external sensors with plug and play interfaces.

Outline dimensions and wiring diagram

Physical image

Outline dimensions and wiring diagram

Clamp on type transducer installation method

Before installation,choose density pipe to install transducers,and clean the installation area,clear away rust,paint,anti-rust layer,it is the best to use angle grinder to polish,use cleaning cloth with alcohol or acetone to clear oil and dust,coat enough couplant around the center of installation area,attach the transducers on the pipe and fix it without air bubbles or sand between transducers and pipe wall.

Remarks:users input transducers parameters by yourself

Installation space

Installation space of clamp on type transducer is inner edge distance of the two transducers(face to face),after inputing the required parameters in Menu,check the display on M25,that is the installation space.

Installation method

The method has 2 kinds: V method,Z method，N method and W methos.

V method(suitable to the pipe diameters within the range DN15-DN200mm)

Normaly,V method is standard installation method,convenient to use with precise measurement,when installation,the two transducers horizontally align,its centre line is horizontal with pipe axis line.

Z method (the most commonly used method)

When the pipe diameter is wide,or there are suspended matters in fluid,too thick scaling or liner inside pipe inner wall,that can make the flow meter can not work normaly and signal poor by using V method installation,so need to use Z method to install,its features are direct transfering without reflection(called sigle sound path),little signal attenuation.