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PNEUMATICS AND FIELD INSTRUMENTS
An instrument is a device that measures a physical quantity such as flow, temperature, level, distance, angle, or pressure. Instruments may be as simple as direct reading thermometers or may be complex multi-variable process analysers. Instruments are often part of a control system in refineries, factories, and vehicles. The control of processes is one of the main branches of applied instrumentation. Instrumentation can also refer to handheld devices that measure some desired variable. Diverse handheld instrumentation is common in laboratories, but can be found in the household as well. For example, a smoke detector is a common instrument found in most western homes.
LEARN P & F INSTRUMENTS
A transmitter is a device that produces an output signal, often in the form of a (4- 20) mA Electrical current signal, although many other using voltage, frequency, pressure, or Ethernet are possible. This signal can be used for informational purposes, or it can be sent to a PLC, DCS, SCADA system, lab view or other type of computerized controller, where it can be interpreted into readable values and used to control other devices and processes in the system.
P & I TRAINING
Wiztech industrial automation provides best training for pneumatics and field instruments in Chennai. Here, students are practically work with the pneumatics and Pneumatics and Field Instruments and done the circuit and I/O connection with PLC / DCS. It creates the professional look to the students with the pneumatics and field instruments.
HOW TO IMPLEMENT WITH PLC / DCS
These pneumatics and field instruments are connected with the input module or output module of PLC / DCS. It will produces 4-20 mA electrical current which is used measure pressure, temperature, flow, velocity of a particular object or liquid or semisolid particles in open or closed area.
SENSORS
A sensor is a converter that measures a physical quantity and converts it into a signal which can be read by an observer or by an (today mostly electronic) instrument. For example, a mercury-in-glass thermometer converts the measured temperature into expansion and contraction of a liquid which can be read on a calibrated glass tube. A thermocouple converts temperature to an output voltage which can be read by a voltmeter. For accuracy, most sensors are calibrated against known standards.
Sensors are used in everyday objects such as touch-sensitive elevator buttons (tactile sensor) and lamps which dim or brighten by touching the base. There are also innumerable applications for sensors of which most people are never aware. The most widely used sensors measure temperature, pressure or flow. Applications include manufacturing and machinery, airplanes and aerospace, cars, medicine and robotics.
SWITCHES
In electrical engineering, a switch is an electrical component that can break an electrical circuit, interrupting the current or diverting it from one conductor to another.
The most familiar form of switch is a manually operated electromechanical device with one or more sets of electrical contacts, which are connected to external circuits. Each set of contacts can be in one of two states: either "closed" meaning the contacts are touching and electricity can flow between them, or "open", meaning the contacts are separated and the Switch is non-conducting. The mechanism actuating the transition between these two states (open or closed) can be either a "toggle" (flip switch for continuous "on" or "off") or "momentary" (push-for "on" or push-for "off") type.
LIMIT SWITCHES
Limit Switches are electro-mechanical devices that consist of an actuator mechanically linked to a set of contacts. When an object comes into contact with the actuator, the device operates the contacts to make or break an electrical connection. Our limit switches work in a variety of applications and environments because of their ruggedness, simple visible operation, easy installation and reliable operation.
Some other Pneumatic & Field Instruments are
- Solenoid valve
- Motor (AC/DC/SERVO)
- Hydraulic piston/pump
- Pneumatic piston/pump
- Relay
- Lamp
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