Calibration Documents: Water System Temperature Sensor (CAL-0320)

Asset ID	CAL-0320
Equipment	Water System Temperature Sensor
Equipment Type	Temperature Sensor
Department	Utilities
Area/Location	PW/WFI
Process Use	Temperature
Parameter	Temperature
Units	°C
Range Min	0
Range Max	100
Acceptance Criteria	±0.5°C
Calibration Frequency (days)	365
Calibration Type	External
Traceability	ISO17025

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Calibration SOP

1. Purpose

The calibration of the Water System Temperature Sensor is performed to ensure accurate temperature measurements within the critical range of 0°C to 100°C. This calibration controls risks associated with accuracy, patient safety, batch quality, and data integrity, thereby ensuring compliance with Good Manufacturing Practices (GMP).

2. Scope

• Asset ID: CAL-0320
• Equipment Name/Type: Water System Temperature Sensor / Temperature Sensor
• Department/Area: Utilities / PW/WFI
• Process Use: Temperature
• Parameter: Temperature
• Range: 0°C to 100°C
• Units: °C
• Calibration Frequency: 365 days

3. Definitions

• Calibration: The process of verifying and adjusting the accuracy of a measurement instrument.
• Verification: The confirmation that a measurement instrument meets specified requirements.
• Adjustment: The process of modifying a measurement instrument to bring it into compliance with specified standards.
• As Found: The condition of the instrument prior to any adjustments.
• As Left: The condition of the instrument after adjustments have been made.
• OOT (Out of Tolerance): A condition where the measurement falls outside the specified acceptance criteria.
• Drift: The gradual change in a measurement instrument’s performance over time.
• Traceability: The ability to trace the history, application, or location of an item through documented recorded identification.
• Measurement Uncertainty: A parameter that characterizes the range of values within which the true value is expected to lie.
• Intermediate Check: A periodic check performed to ensure the ongoing accuracy of a measurement instrument.

4. References

• Company Metrology SOP [TBD]
• ISO/IEC 17025 traceability via calibration certificates
• ALCOA+ principles

5. Responsibilities

• Technician/Metrology: Perform calibration and document results.
• QC/QA Reviewer: Review calibration documentation and results.
• Owner Department: Ensure equipment is available and accessible for calibration.
• External Service Provider: Conduct external calibration as required.

6. Safety & Preconditions

• Ensure environmental controls are in place (temperature, humidity).
• Allow for warm-up/stabilization of the equipment as per manufacturer guidelines.
• Maintain cleanliness of the equipment and surrounding area.
• Check leveling of the equipment.
• Verify power supply is stable and within specifications.

7. Standards & Tools

• Reference Standards: [TBD]
• Traceability Statement: Calibration traceable to ISO17025.
• Certificate Validity Check: Ensure all certificates are current and valid.

8. Calibration Strategy

The calibration will follow the As Found and As Left logic:

• Minimum number of points: At least 5 points including endpoints (0°C, 100°C) and midpoints (25°C, 50°C, 75°C).
• Replicate readings at each point: 3 repeats to ensure accuracy.

9. Step-by-Step Procedure

1. Preparation: Gather all necessary tools and reference standards.
2. Stabilization: Allow the sensor to stabilize at room temperature for at least 30 minutes.
3. As Found checks and data capture: Measure temperature at defined points and record observations contemporaneously.
4. Adjustment rules: If OOT is detected, follow adjustment procedures if allowed; otherwise, escalate to QA.
5. As Left verification: Confirm that the sensor is within acceptance criteria after adjustments.
6. Labeling + documentation completion: Complete all required documentation and label the equipment with calibration details.

10. Acceptance Criteria & Calculations

Acceptance criteria: ±0.5°C

Error calculation formula: Error = Observed Value – True Value

Pass/Fail Logic: If the absolute value of Error is less than or equal to 0.5°C, the calibration is considered a pass.

Rounding rule: [TBD]

11. Handling OOT / Failures

• Immediate containment: Tag equipment and stop use.
• Notification & deviation initiation: Notify QA and initiate deviation report.
• Impact assessment trigger: Define impact window and review of affected results/batches.
• Recalibration after repair/adjustment: Ensure recalibration is performed post-adjustment.
• QA disposition: [TBD]

12. Records & Retention

• Logbook entries: Document all calibration activities.
• Calibration report/certificate filing: Maintain records in accordance with company policy.
• e-Records if applicable: [TBD]
• Label content requirements: Include calibrated date, due date, technician name, and status.

13. Annexures

Annexure A: Calibration Data Sheet

Test Points	Reference	Observed	Error	Acceptance	Pass/Fail	As Found	As Left
[TBD]	[TBD]	[TBD]	[TBD]	[TBD]	[TBD]	[TBD]	[TBD]

Annexure B: Quick Checklist

• Environmental controls checked
• Equipment stabilized
• Calibration data recorded
• Adjustments made if necessary
• Documentation completed

Annexure C: Example Label Text

Calibration Date: [TBD]

Due Date: [TBD]

Calibrated By: [TBD]

Status: [TBD]

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Calibration Protocol

Calibration Protocol

Protocol ID	Asset ID	Equipment Name	Equipment Type	Dept	Area	Process Use	Parameter	Units	Range	Acceptance Criteria	Frequency	Calibration Type	Traceability
[TBD]	CAL-0320	Water System Temperature Sensor	Temperature Sensor	Utilities	PW/WFI	Temperature	Temperature	°C	0 – 100	±0.5°C	365 days	External	ISO17025

Environmental Conditions

Temperature: [TBD] °C

Relative Humidity: [TBD] %

Vibration: [TBD]

Drafts: [TBD]

Test Point Selection

• Minimum: 0°C
• 25% of Range: 25°C
• 50% of Range: 50°C
• 75% of Range: 75°C
• Maximum: 100°C

Results Table

Test Point	Ref Value	Observed (As Found)	Error	Limit	Pass/Fail	Observed (As Left)	Error	Pass/Fail
0°C	[TBD]	[TBD]	[TBD]	±0.5°C	[TBD]	[TBD]	[TBD]	[TBD]
25°C	[TBD]	[TBD]	[TBD]	±0.5°C	[TBD]	[TBD]	[TBD]	[TBD]
50°C	[TBD]	[TBD]	[TBD]	±0.5°C	[TBD]	[TBD]	[TBD]	[TBD]
75°C	[TBD]	[TBD]	[TBD]	±0.5°C	[TBD]	[TBD]	[TBD]	[TBD]
100°C	[TBD]	[TBD]	[TBD]	±0.5°C	[TBD]	[TBD]	[TBD]	[TBD]

Stepwise Instructions

1. Preparation: Ensure the calibration equipment is clean and functioning. Verify that the temperature sensor is properly installed and connected.
2. Stabilization: Allow the temperature sensor to stabilize at room temperature for at least 30 minutes before calibration.
3. Performing Readings: Measure the temperature at each test point. Take three replicate readings at each point and record the values.
4. Calculating Error: For each test point, calculate the error as: Error = Observed Value – Reference Value.
5. Evaluation: Compare the calculated error against the acceptance criteria of ±0.5°C.
6. Documentation: Complete the results table with As Found and As Left values, including any errors and pass/fail status.

Deviation Instruction for OOT

If any observed value is outside the acceptance criteria:

• Stop use of the equipment.
• Notify the supervisor immediately.
• Open a deviation report.
• Quarantine impacted results window: [TBD]
• Await QA decision on further actions.

Approvals

Prepared By	Reviewed By	Approved By
[Signature/Date]	[Signature/Date]	[Signature/Date]

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Calibration Checklist

Asset ID	Equipment	Dept	Area	Parameter	Range	Acceptance	Frequency	Traceability
CAL-0320	Water System Temperature Sensor	Utilities	PW/WFI	Temperature	0 – 100 °C	±0.5°C	365 days	ISO17025

Pre-calibration

• [ ] Verify environmental conditions are within specifications
• [ ] Allow sensor to warm up as per manufacturer guidelines
• [ ] Clean the sensor and surrounding area
• [ ] Ensure sensor is level
• [ ] Check validity of reference standards
• [ ] Confirm logbook is ready for entries

As Found Execution

• [ ] Set the temperature setpoints
• [ ] Perform repeat measurements
• [ ] Record raw data accurately
• [ ] Perform necessary calculations

OOT Immediate Actions

• [ ] Tag out the equipment
• [ ] Stop use of the sensor
• [ ] Notify the appropriate personnel
• [ ] Document deviation
• [ ] Trigger impact review

As Left Verification

• [ ] Conduct post-adjustment checks
• [ ] Confirm all measurements are within acceptance limits

Documentation & Closure

• [ ] Update equipment label
• [ ] Attach calibration certificate
• [ ] Obtain reviewer sign-off
• [ ] Update next due date in logbook

Data Integrity (ALCOA+): Ensure all data is Attributable, Legible, Contemporaneous, Original, Accurate, and Complete.

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Deviation Impact Assessment

Event Summary
Asset: Water System Temperature Sensor Date: [TBD] Discovered By: [TBD] Document References: [TBD] As Found Results Summary: [TBD]

Immediate Containment Checklist

• Stop use of the asset
• Label/tag the asset as out of service
• Segregate impacted work

Define Impact Window

Last known in-tolerance date: [TBD] to discovery date: [TBD]

Product/Batch/Test Impact Review

Batch/Study/Report ID	Results Potentially Impacted	Re-test/Re-weigh Decision
[TBD]	[TBD]	[TBD]

Data Integrity Review Prompts (ALCOA+)

• Attributable: [TBD]
• Legible: [TBD]
• Contemporaneous: [TBD]
• Original: [TBD]
• Accurate: [TBD]
• Complete: [TBD]
• Consistent: [TBD]
• Enduring: [TBD]
• Available: [TBD]

Risk Assessment

Severity	Probability	Detectability	Rationale	Overall Risk
[TBD]	[TBD]	[TBD]	[TBD]	[TBD]

Investigation Summary

Root Cause: [TBD]

CAPA Plan

Action	Owner	Due Date	Effectiveness Check
[TBD]	[TBD]	[TBD]	[TBD]

QA Disposition

Release/Hold/Retest/Recall Triggers: [TBD]

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Calibration Certificate

Certificate No: [TBD]

Date: [TBD]

Next Due Date: [TBD]

Asset Details

Asset ID	Equipment Name	Equipment Type	Dept	Area	Make/Model	Serial No	Location	Parameter/Range/Units	Acceptance Criteria
CAL-0320	Water System Temperature Sensor	Temperature Sensor	Utilities	PW/WFI	[TBD]	[TBD]	[TBD]	Temperature (0 – 100) °C	±0.5°C

Conditions

Environment: [TBD]

Reference Standards

Standard Name/ID	Certificate No	Due Date	Traceability Statement
[TBD]	[TBD]	[TBD]	ISO17025

Results

As Found Results

Test Point	Measured Value (°C)	Remarks
0	[TBD]	[TBD]
25	[TBD]	[TBD]
50	[TBD]	[TBD]
75	[TBD]	[TBD]
100	[TBD]	[TBD]

As Left Results

Test Point	Measured Value (°C)	Remarks
0	[TBD]	[TBD]
25	[TBD]	[TBD]
50	[TBD]	[TBD]
75	[TBD]	[TBD]
100	[TBD]	[TBD]

Measurement Uncertainty Statement: [TBD]

Statement of Conformity: [Pass/Fail]

Remarks: [TBD]

Signatures

Performed by: ____________________ Date: ___________

Checked by: ______________________ Date: ___________

Approved by: _____________________ Date: ___________

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