9400

Application
The 9400 series guided wave radar level transmitter is a breakthrough in cost effective very high accuracy, very high resolution liquid level sensing for heavy duty applications. Rochester Sensors’ GWR level sensor is the culmination of years of research into micropower impulse radar, time domain reflectometry and equivalent time sampling. Rochester Sensors Model 9400 liquid level sensor is used to monitor liquids such as fuels, chemicals, water, coolant, lubricants and other materials. The device is capable of maintaining very accurate level readings regardless of liquid. The 9400 can optionally be configured to accurately measure both fuel level and the level of dissimilar materials, such as water/fuel interface. The device emits a series of electromagnetic pulses down the sensor probe. Liquid/air interface, and dissimilar liquid interfaces provide a change in the characteristic impedance of the sensor probe, and create a reflection of the pulse. The time-of-flight of the reflected pulses is measured, and the liquid and interface levels are calculated.

• 商用车辆和公共汽车
• 建筑和采矿机械
• 农机
• 移动和固定式发电机、泵和压缩机

如下图所示, 9400 型具有许多其他技术不具备的优点, 而且成本与超声波或电容式解决方案相似, 但比典型的过程控制应用导波雷达产品便宜得多。

Documents
9400 Introduction
Data Sheet