LVCN-302過程液位控制器 美國omega

過程液位控制器，帶多色條形圖
LVCN-300 series
過程液位控制器，帶多色條形圖

NEMA-4 and Optional NEMA-4 Fiberglass Enclosure 
Multi-Color Bar Graph Process for Zooming in on Critical Range 
Large Numeric Display 
4-20 mA Process Input 
Easy Front Panel Programming
 

The LVCN-300 series is designed from an operator’s point of view, making any process and alarm points visible on the multi-colored display graph. They get everything they need at a glance!
The LVCN-300 series provides reliability with very flexible design options and a simple, attractive faceplate to l you exactly what is going on inside your tank regardless of where it is located. It can be easily viewed from a distance or while walking the plant floor. Best of all, it's simple to understand: if the green vertical bar (representing fluid level) is between the orange and yellow line everything’s just fine. If it’s above or below the red marks, something is wrong. That is all there is to it.
The LVCN-300 series accepts all types of 4-20 mA sensors, such as pressure, ultrasonic, float type liquid level transmitters and capacitive transmitters. The sensor input is isolated and loop powered up to 24 Vdc, allowing data gathering devices to easily interface.
Two models are available, the LVCN-301 or LVCN-302. The LVCN-301 is for Make Up applications and the LVCN-302 is for sump applications. A typical Make Up application is when the liquid in a tank is "lost" because it is being used in a manufacturing process or lost by evaporation and has to periodically be refilled or "made up". To accomplish a Make Up operation the LVCN-301 controller uses a differential relay that is activated by a FALLING level in the tank. The same relay is going to turn the pump or valve ON and OFF. First you need to program the Make Up ON level where you want to begin refilling the tank with liquid. When the level FALLS or DECREASES to this point, the controller will CLOSE or activate the relay and turn ON a pump or valve and begin refilling the tank. The LVCN-301 controller has internally "latched" the relay closed and will continue holding it closed until the Make Up OFF level that was programmed is reached and the tank stops filling.
A typical Sump application is when the liquid in a tank is being collected and has to periodically be transferred or pumped out to prevent an overflow. A basement with a sump pump is doing the same type of operation. To accomplish this Sump Operation the LVCN-302 controller uses a differential relay that is activated by a RISING level in the tank. The same relay is going to turn the pump or valve ON and OFF. First you need to program the SUMP ON level where you want to begin draining the liquid in the tank. When the level RISES or INCREASES to this level the controller will CLOSE or activate the relay and turn on a pump or valve and begin draining the tank. The LVCN-302 controller has internally "latched" the relay closed and will continue holding it closed until the Sump OFF level you programmed is reached and the tank stops draining.
Please download PDF file above for full product specifications

產品型號/產品描述
LVCN-301 Make-Up Model
LVCN-302 Sump Model
LVR51 Float Transmitter, 0.3 m (1') Length
PX439-005GI Submersible Pressure Transmitter
注釋： 配備完整的操作手冊。24伏直流電源，加24VDC模型數。24伏電源，添加24VAC模型數。沒有額外的費用。

LVCN-302過程液位控制器 美國omega

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