How to setup Alfa Laval Think Top Auto Valve?

Alfa Laval Think Top is a control of sanitary valves that commonly used for hygiene or chemical manufactures.Think Top Basic offers a durable watertight design, a proven and inherently safe design and low total cost of ownership.

In my plant,all auto valves are using Alfa Laval Think Top that provide easy installation and configuration.This valve sensing and control head is optimized with fewer options and fewer digital connections. Think Top Basic is available in Digital, AS-Interface and ATEX versions.The ThinkTop Basic sensing and control unit is a uniform modular control head that consists of a proven no-touch, set-and-forget sensor system with light-emitting diodes (LEDs), solenoid valves and valve control sensor board for connection to any PLC (Programming Logic Controller) system.

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Sensor Classification

Sensor classification schemes range from very simple to the complex. Depending on the classification purpose, different classification criteria may be selected. Here, we offer several practical ways to look at the sensors.

All sensors may be of two kinds: passive and active. A passive sensor does not need any additional energy source and directly generates an electric signal in response to an external stimulus; that is, the input stimulus energy is converted by the sensor into the output signal.

The examples are a thermocouple, a photodiode, and a piezoelectric sensor. Most of passive sensors are direct sensors as we defined them earlier. The active sensors require external power for their operation, which is called an excitation signal. read more