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。

调频连续波雷达物位计的通用原理为雷达在罐顶发射电磁波，电磁波碰到介质反射后被雷达接收，接收信号与发射信号之间的频率差6f与介质表面的距离R成一定比例关系:R=C(速度)*6f(频率差) /2/K (调频斜率)。因为光速C和调频斜率K已知，因此估算出频率差6f，便可得到雷达安装位置料面的距离R，再通过已知的罐体总高，减去雷达到料面的空间距离(简称空高)，得出料位的高度。

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.