Smart Instruments for Process Control

Smart Instruments for Process Control 
Now a
days in industries 4.0 and IIOT technology every process control and management
is carried out by smart instruments. Smart instruments means this sensors or
transducer can be accessible remotely and can be programmed remotely, even
troubleshooting and diagnosis also can be possible with the help of Internet.
The
evolution from simple pneumatic to sophisticated smart instruments has been
driven by user demands for better performance, easier maintenance, and more
uptime. Smart instruments have met these demands and more, albeit with
increasing complexity. But once smart instruments are understood and deployed,
the payoff is less complexity, better performance, and reduced costs throughout
the balance of the process control and information system lifecycles.
The
deployment of smart instruments by the IoT driving force offers less complex,
better performance and reduced cost for process control and data acquisition.
These smart instruments can therefore be used to compute complex calculations
and measurements without the aid of an automation system
.


There
are different measurement in process for such a variables like Pressure,
Temperature, Flow and level. For that measurement we need sensors and
transducer or Controller.
Sensors
are sensing physical variables like Pressure, Temperature, Flow, level and it
will give to controller for making signal standard and amplified as per standard
current and voltage. Additional features in Smart Instruments are it can be
connected with computers and can be programmed as per application with the help
of software. Smart instruments have diagnostics that can detect faults in the
installation or problems with the application, each of which could compromise
measurement quality and/or reliability. Smart instruments can also respond to
inquiries or push condition information to the automation system, as well as to
other networked platforms.
We can
also communicate with this instruments with different communication protocols
which are diagnostics capable with following safety features in Hazardous area.
Some smart instruments equipped with communications protocols such as HART 6+,
Wireless HART, Profibus DP/PA or Foundation fieldbus H1 can exchange PVs
directly among similarly equipped instruments. These PVs are then used to
perform added calculations in the field without an automation system or an
additional calculation agent.
For the
Siemens they have SITRANS Series in Smart instruments.
For
temperature measurement they have SITRANS TH300 Temp Controller with HART modem
programmable. This is universal device for RTD, Thermocouple and Resistors.
Using Siemens PDM Software we can configure or parameterize this device.
Figure 1
Siemens SITRANS TH200 for Temperature Measurement
But
smart instruments can do a lot more than just measure and deliver the PV to
multiple hosts. One or more engineered PVs, basically raw analog values that
are scaled, linearized, and/or otherwise conditioned, along with instrument
status data are created within a smart instrument. These engineered PVs along
with device data are communicated digitally via a fieldbus or wireless network
to the automation system and/or to other networked access points.
For
Level measurements Siemens have SITRANS LR series in Smart instruments. This is
Profibus PA based and can be networked in Profibus, so from the FDP coupler
this device can be accessible remotely and data can be monitored remotely from
HMI or Web server based SCADA systems. Instrument measurement outputs are
assessed against calibration standards to confirm the quality of the
measurement information.

Figure 2
Siemens SITARNS LR 250 Level Radar based Sensor
There
are many other devices are available in wireless LAN and Wireless HART protocol
based , so that will be more comfortable with wireless as a mainstream
solution, intelligent instrument information will increasingly be directed to
wireless access points, which will in turn be integrated directly into control
or IT network data servers
.
For the
Flow measurements Siemens have different technologies like Ultrasonic based,
electromagnetic based and Coriolis principal base Instruments
Figure 3
Siemens SITRANS Flow Sensors with Smart Controller
           
Now
using IOT (Internet of Things) & IIOT (Industrial Internet of Things) this
all devices are becoming so powerful to analyze or compute the data. Industry
4.0 and Industrial Internet of Things (IIoT) are enabled with connectivity to
and from devices (from a sensor to a large-scale control system), data, and
analytics.

The
Smart instrumentation with integration of IIOT will be revolution in Industrial
Sectors and it will be more secure, faster response and powerful diagnostics
capability. 

For More Detail Please See Below Video


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