Field instrument SITC Work,

1️⃣ Supply of Instruments

Providing required field instruments according to project specification.

Typical instruments include:
• Pressure transmitters
• Flow transmitters
• Level transmitters
• Temperature sensors (RTD and Thermocouple)
• Control valves
• Level switches
• Pressure gauges

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2️⃣ Installation of Field Instruments

Mechanical installation at the site.

Work includes:
• Mounting transmitters on process lines
• Installing thermowells for temperature sensors
• Installing level sensors on tanks
• Mounting junction boxes and instrument stands
• Proper alignment and tightening

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3️⃣ Cable Laying and Termination

Electrical work for connecting instruments.

Includes:
• Laying instrument cables
• Cable tray routing
• Glanding and termination
• Connection in marshalling panel, PLC panel or DCS panel

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4️⃣ Loop Checking

Checking complete signal path from field instrument to control panel.

Example:

Field transmitter → cable → junction box → marshalling panel → PLC and DCS.

Purpose:
• Ensure correct wiring
• Verify signal transmission

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5️⃣ Calibration of Instruments

Calibration ensures the instrument gives accurate readings.

Typical tasks:
• Pressure transmitter calibration
• Flow transmitter calibration
• Level transmitter calibration
• Temperature sensor testing

Using:
• Calibrators
• Pressure pumps
• Multimeters


6️⃣ Testing

Testing system operation before starting plant.

Includes:
• Signal simulation (4–20 mA)
• Alarm checking
• Interlock checking
• Communication testing with PLC and DCS



7️⃣ Commissioning

Final step where the instruments are made operational in the plant.

Work includes:
• Parameter configuration
• Functional testing
• Integration with control system
• Trial run of the plant