CKAS-FLQW990气体涡轮流量计采用先进的超低功耗单片微机技术，智能化电路设计，集流量探头、微处理器、压力、温度传感器于一体，采取内置式蛆合，使结构更加紧凑，可直接测量流体的流量、压力和温度，并自动实时跟踪补偿和压缩因子修正，采用液晶点阵汉字显示，显示位数多，读数直观方便，可直接显示工作状态下的体积流量、标准状态下的体积流量、总星，以及介质压力温度等参数，可输出频率脉冲、(4~20)mA模拟信号并具有RS485接口。
CKAS-FLQW990 gas turbine flowmeter, featuring advanced ultra-low power consumption single-chip microcomputer technology and intelligent circuit design, integrates the flow probe, microprocessor, pressure, and temperature sensors. The built-in combination enables the flowmeter to be more compact in structure and to perform direct measurement of the flow, pressure, and temperature of fluid, and automatic real-time tracking compensation and compressibility factor correction. The lattice LCD with Chinese character display featuring many display digits and intuitive and convenient reading can directly display parameters such as the volume flow in working conditions, the volume flow and total flow in standard conditions, medium pressure and temperature; it can output frequency pulses, (4~20) mA analog signals and is equipped with RS485 interface.

中英文双语言选择，广泛应用于石油、化工、电力、冶金等行业的气体计量。
With Chinese and English versions available, it is widely applied to gas metering in petroleum, chemical, electric power, metallurgy, and other industries.

超声波流量计分为管外夹装式和插入式安装两种，接线方式可以DC24V供电，也可以AC220V供电可选。超声波流量计是集多年专业生产制造超声波流量计的技术与经验，采用TI 的MSP430FG4618低功耗单片机，最新开发的一种高性能、低价格、高可靠性、功能强大的超声波流量计。选用了国际上著名的半导体元器件厂商生产的最新、最先进的集成电路及微处理器等，例如Tl、Maxim、Philips、Winbond、Lilinx 等。硬件设计简单、软件功能强大。采用低电压多脉冲平衡发射接收的专利技术，使其更能适应工业环境中的变频干扰，达到稳定、正确的工作。可提供:ExdIICT6/ExiallCT4。

导波雷达发出的高频微波脉冲沿着探测组件（钢缆或钢杆）传播，遇到被测介质，由于介电常数突变，引起反射，一部分脉冲能量被反射回来。发射脉冲与反射脉冲的时间间隔与被测介质的距离成正比。
The high-frequency microwave pulse sent by the guided wave radar propagates along the detection assembly (steel wire or steel rod), and meets the medium to be tested, which is reflected due to a sudden change in the dielectric constant, and part of the pulse energy is reflected. The time interval between the emitted and reflected impulses is positively proportional to the distance of the medium to be tested.

涡街流量计用于测量满管状态下的气体、蒸汽和液体，测量是基于卡门旋涡原理。当介质以一定速度流过三角柱时，在三角柱体两侧后面产生一个交替排列的旋涡带，称之为"卡门旋涡"，由于旋涡发生体两侧交替产生旋涡，于是在发生体两侧产生压力脉动，从而使检测体产生交变应力，封装在检测探头体内的压电元件在交变压力的作用下，产生与旋涡同频率的交变电荷信号，经前放大器放大，送至智能流量计算仪进行智能化处理，实现流体瞬时流量、累积流量的显示及流量数据与微机系统的通讯和控制。

The vortex flowmeter is used to measure gas, steam and liquid in a full pipe state, and the measurement is based on the Karman vortex principle. When the medium flows through the triangular column at a certain velocity, an alternately arranged vortex belt is generated behind both sides of the triangular column, which is called "Karman vortex". Since vortices are alternately generated on both sides of the vortex generator, pressure pulsations are generated on both sides of the generator, so that alternating stress is generated in the test object. The piezoelectric elements encapsulated in the test probe are under the action of alternating pressure. The alternating charge signal with the same frequency as the vortex is generated, amplified by the pre-amplifier, and sent to the intelligent flow calculator for intelligent processing, so as to realize the display of instantaneous flow and cumulative flow of fluid and the communication and control of flow data with the microcomputer system.