Loop Checking Technician – Analog/Digital Sensors

The Junior Loop Checking Technician supports the commissioning team by performing basic loop checks on analog and digital sensors to ensure signal continuity, correct wiring, and accurate field-to-control room communication. This role is critical during the pre-commissioning and startup phases of industrial projects.

Key Responsibilities:

• Loop Verification:
  Assist in performing continuity and functionality checks of control loops for pressure, temperature, flow, and level transmitters, as well as digital inputs/outputs.

• Instrument Identification:
  Verify proper installation and tagging of field instruments as per P&IDs, instrument index, and loop diagrams.

• Signal Testing:
  Support senior technicians in checking 4–20mA analog signals and discrete digital signals from field devices to the control system (PLC/DCS).

• Wiring and Termination Checks:
  Ensure correct cable termination and wire labeling between field junction boxes, marshalling cabinets, and control panels.

• Field Calibration Support:
  Assist in simulating inputs and outputs for calibration and function tests under supervision.

• Loop Documentation:
  Record test results on loop check sheets and update as-built loop diagrams in collaboration with QA/QC teams.

• Safety Compliance:
  Follow all safety protocols during field work, including lockout/tagout (LOTO) procedures and use of PPE.

Focus Areas:

1. Analog & Digital Signal Familiarity:
   Understand the basics of analog (4–20mA, 0–10V) and digital (ON/OFF, dry/wet contact) signals used in industrial automation.

2. Loop Diagram Interpretation:
   Learn to read and interpret loop diagrams, I/O lists, and instrument datasheets.

3. Pre-Commissioning Workflow:
   Support systematic loop checking activities as part of broader pre-commissioning and startup procedures.

4. Field-to-Control Room Communication:
   Gain experience ensuring accurate signal transmission between sensors, actuators, and control systems (PLC/DCS).

5. Hands-On Learning Environment:
   Work closely with experienced technicians and engineers to build foundational skills in instrumentation and control systems.

Qualifications:

• Diploma or ITI in Instrumentation, Electrical, Electronics, or a related field.

• 0–2 years of experience in instrumentation installation, commissioning, or loop checking (internships or field training a plus).

• Basic understanding of control loops and industrial instrumentation.

• Familiarity with multimeters, loop calibrators, and signal simulators.

• Ability to interpret simple electrical drawings and loop diagrams.

• Good communication, teamwork, and safety awareness.