Samyak

Signal Conditioning for RTD Temperature Measurement : Measurement of temperature is critical in modern electronic devices. Knowledge of system temperature can also be used to control battery charging as well as prevent damage to expensive microprocessors. In modern days, we have Thermocouple, RTDs, Semiconductor based temperature sensors and thermistors for temperature measurement. Accurate temperature measurements are required in many systems such as process control and instrumentation applications. In most cases, because of low-level nonlinear outputs, the sensor output must be properly conditioned and amplified before further processing can occur. Signal conditioning  is an electronic circuit that manipulates a signal in a way that prepares it for the next stage of processing. Many data acquisition applications involve environmental or mechanical measurement from sensors, such as temperature and vibration. Resistance Temperature Devices (RTDs)  are accurate, but require exc...

A medical ventilator is a machine that helps your lungs work. It can be a lifesaving machine if you have a condition that makes it hard for you to breathe properly or when you can’t breathe on your own at all. A ventilator helps to push air in and out of your lungs so your body can get the oxygen it needs. You may wear a fitted mask to help get oxygen from the ventilator into your lungs. Or, if your condition is more serious, a breathing tube may be inserted down your throat to supply your lungs with oxygen. Ventilators are most often used in hospital settings. A doctor or a respiratory therapist will control how much oxygen is pushed into your lungs by the ventilator. Other names that a ventilator is known by include: respirator breathing machine mechanical ventilation Why would you need a ventilator? Not being able to breathe properly on your own is known as  respiratory failure  and is a life-threatening emergency. If your brain, heart, liver, kidneys, and other organs don’...

  A control valve is a power operated device capable of modulating flow at varying degrees between minimal flow and full capacity in response to a signal from the controlling system. Control valves play a major role in the everyday effort to increase process plant profitability and conserve energy. Understanding the Controlling of the Valve Control valve basically follows the instruction received from controlling loop (sensing element and the controller) Sensing element sends a signal to controller which is intern conveyed to the positioner mounted on the Valve. The Postioner controls the position of the valve through actuator. Parameters for selection To select a right fit option following parameter of the media are very important. Such as state (vapour, liquid or two-phase), vapour pressure, flow-prate, inlet and outlet pressures, inlet temperature, density, molecular weight, viscosity, specific heat ratio, critical temperature and critical pressure. Also, while defining the flow...

  What is a PID Controller? The term PID stands for proportional integral derivative and it is one kind of device used to control different process variables like pressure, flow, temperature, and speed in industrial applications. In this controller, a control loop feedback device is used to regulate all the process variables. This type of control is used to drive a system in the direction of an objective location otherwise level. It is almost everywhere for temperature control and used in scientific processes, automation & myriad chemical. In this controller, closed-loop feedback is used to maintain the real output from a method like close to the objective otherwise output at the fixe point if possible.  PID Controller Block Diagram A closed-loop system like a PID controller includes a feedback control system. This system evaluates the feedback variable using a fixed point to generate an error signal. Based on that, it alters the system output. This procedure will continue...