plug-in ultrasonic flowmeter

The plug-in ultrasonic flowmeter is composed of a host and a plug-in sensor. Only two mounting holes need to be opened on the surface of the pipe to install the plug-in sensor. Using the opening tool, the plug-in ultrasonic sensor can be installed without water. Because the sensor is in direct contact with the fluid, the measurement is stable and reliable.

1. The plug-in ultrasonic flowmeter is composed of a converter and a pair of plug-in sensors. The plug-in sensor is composed of a positioning base, a ball valve and a sensor core. Principle: when the ultrasonic wave passes through the liquid, the liquid has a slight impact on the transmission and insertion time, and the change of the transmission and insertion time is directly proportional to the liquid flow rate.

2. Application of plug-in ultrasonic flowmeter

It is not affected by the changes of temperature, pressure, density, accuracy and conductivity. The sensor has simple structure, no fluid saving and no blockage. It can display instantaneous flow, instantaneous flow rate, positive, negative and net cumulative measurement, flow, heat, etc.

Memory function: it can remember the annual accumulation of day, month and power on and off time.

Two circuit signals (temperature, pressure and liquid level) can be input

Multiple output modes: RS232 / 485, 4-20 mA, 0-2 mA.OCT cumulative pulse frequency has network working mode and self diagnosis function, and programmable batch (Quantitative) controller

3. Plug-in ultrasonic flowmeter is a product integrating the advantages of external bound sensor and standard pipe section sensor. Its characteristics are as follows:

(1) It solves the problems of weak signal and abnormal measurement of external bound sensor when the inner wall of the pipeline is scaling or severely corroded. It can also be installed on the cement pipeline;

(2) The special opening tool can enable the sensor to be installed under pressure without shutdown, without pressure loss, ensure the normal and stable operation of production, and there is no need to stop water for future maintenance, so it is really maintenance free;

(3) The ultrasonic transmitting crystal of the sensor is in direct contact with the measured liquid, which improves the measurement accuracy and the operation stability of the machine;

(4) Compared with electromagnetic flowmeter, it is economical, reliable and accurate to use in large diameter.

Product features of plug-in ultrasonic flowmeter

Ultrasonic flowmeter adopts micro processing technology and very large scale integration circuit. Compared with other ultrasonic flowmeters, it not only has the remarkable characteristics of "three high and one low" (high precision, high reliability, high performance and low price), but also has the following advantages:

(1) 0.2ns direct TDOA measurement circuit and 40ps TDOA measurement resolution ensure that the instrument can achieve 1% linearity and 0.5% repeatability, and the measurement accuracy can reach 1%.

(2) Low voltage, multi pulse signal double balanced transmitting and receiving Haifeng technology and anti-interference circuit design， can be used in almost all industrial environments (especially in frequency converter environment).

(3) Positive and negative two-way metering, which can measure positive, negative and net cumulative flow, flow rate, etc.

(4) Shell mold manufacturing, protection grade: IP65.

(5) Equipped with temperature transmitter, it can realize heat measurement and display instantaneous flow (m3 / h), flow rate (M / s), cumulative flow (M3), cumulative heat (GJ), peak flow and time, etc.

(6) The machine is equipped with lightning protection elements to ensure the good operation of the machine in the minefield. It can also be directly connected with lightning arrester on the power supply for better protection.

(7) Complete signal output and flexible networking function can meet various requirements of different users.

1.Input signal: 5 channels of 4-20mA analog input with accuracy of 0.1%. Other signals such as temperature, pressure and liquid level can be input.

2. Output signal: 1 channel of 4-20mA or 0-20mA analog current signal; Relay and OCT output; RS-232 / 485 standard serial interface output; GPRS, PSTN, CAN bus and GSM short message can be used for networking.

(8) Complete software design: daily, monthly and annual cumulative function: it can remember the cumulative flow of any day, any month and any year in the first 512 operation days, the first 128 operation months and the first five operation years, which is convenient for query and management.

(9) Power on and power off management function: it can record the time of power on and power off for the first 64 times and the instantaneous flow at the time of power on and power off, so as to protect all data. The user can choose to supplement the amount automatically or manually to reduce the loss of user flow.

(10) It has the function of fault self diagnosis, and can automatically remember whether the working state of the first 64 operating days is normal.

(11) Low power consumption and high reliability; TDS-100 series adopts the products of world-famous IC manufacturers in the design, with superior quality and complete power consumption of only 2W.

Technical parameters of plug-in ultrasonic flowmeter