Calibration Documents: Thermocouple Type K (CAL-0053)

Asset ID	CAL-0053
Equipment	Thermocouple Type K
Equipment Type	Thermocouple
Department	Engineering
Area/Location	Utilities
Process Use	Temperature sensing
Parameter	Temperature
Units	°C
Range Min	-50
Range Max	600
Acceptance Criteria	±1°C
Calibration Frequency (days)	365
Calibration Type	External
Traceability	ISO17025

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Calibration SOP

1. Purpose

The calibration of the Thermocouple Type K is performed to ensure accurate temperature sensing within the specified range of -50°C to 600°C. This calibration controls risks related to measurement accuracy, patient safety, batch quality, and data integrity, thereby supporting compliance with Good Manufacturing Practices (GMP).

2. Scope

• Asset ID: CAL-0053
• Equipment Name/Type: Thermocouple Type K / Thermocouple
• Department/Area: Engineering / Utilities
• Process Use: Temperature sensing
• Parameter: Temperature
• Range: -50°C to 600°C
• Units: °C
• Calibration Frequency: 365 days

3. Definitions

• Calibration: The process of comparing a measurement instrument against a known standard to determine its accuracy.
• 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 equipment prior to any adjustments being made.
• As Left: The condition of the equipment after adjustments have been made.
• OOT (Out of Tolerance): A condition where the measurement falls outside the established acceptance criteria.
• Drift: The gradual change in a measurement instrument’s output over time.
• Traceability: The ability to verify the history, location, or application of an item by means of documented recorded identification.
• Measurement Uncertainty: A parameter that characterizes the range of values within which the true value is asserted to lie.
• Intermediate Check: A periodic check performed to ensure the continued accuracy of a measurement instrument between calibrations.

4. References

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

5. Responsibilities

• Technician/Metrology: Perform calibration and record data.
• QC/QA Reviewer: Review calibration records and ensure compliance.
• Owner Department: Ensure equipment is available and in good condition for calibration.
• External Service Provider: Conduct external calibration as per the calibration type.

6. Safety & Preconditions

• Ensure environmental controls are in place (temperature, humidity).
• Allow equipment to warm-up and stabilize before calibration.
• Maintain cleanliness of the equipment and surrounding area.
• Ensure equipment is leveled properly.
• Check power supply for stability and reliability.

7. Standards & Tools

• Reference standards required: [TBD]
• Traceability: ISO17025
• Certificate validity check: [TBD]
• Standard ID placeholders: [TBD]

8. Calibration Strategy

Calibration will follow the As Found then As Left logic. The minimum number of test points will be five, including endpoints and midpoints within the specified range of -50°C to 600°C. Each point will have three replicate readings to ensure accuracy and reliability.

9. Step-by-Step Procedure

1. Preparation: Gather all necessary tools and reference standards.
2. Stabilization: Allow the thermocouple to stabilize at the calibration environment.
3. As Found checks and data capture: Record initial readings at each test point.
4. Adjustment rules: If OOT is detected, follow the adjustment protocol; if not allowed, escalate to QA.
5. As Left verification: Record final readings after any adjustments.
6. Labeling + documentation completion: Ensure all records are filled out contemporaneously (ALCOA+).

10. Acceptance Criteria & Calculations

The acceptance criteria for the Thermocouple Type K is ±1°C. The error calculation formula is:

Error = Observed Value – True Value

Pass/Fail logic: If the absolute value of the error is within the acceptance criteria, the calibration passes; otherwise, it fails.

Rounding rule: [TBD]

11. Handling OOT / Failures

• Immediate containment: Tag equipment and stop use.
• Notification & deviation initiation: Notify QA and document the deviation.
• Impact assessment trigger: Define impact window and review affected results/batches.
• Recalibration after repair/adjustment: Schedule recalibration as necessary.
• QA disposition placeholders: [TBD]

12. Records & Retention

• Logbook entries: Document all calibration activities.
• Calibration report/certificate filing: Maintain records for audit purposes.
• e-Records if applicable: [TBD]
• Label content requirements: Calibrated date, due date, by whom, 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 warmed up
• Cleanliness verified
• Leveling confirmed
• Power supply stable

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-0053	Thermocouple Type K	Thermocouple	Engineering	Utilities	Temperature sensing	Temperature	°C	-50 to 600	±1°C	365 days	External	ISO17025

Environmental Conditions

Temperature: [TBD]

Relative Humidity: [TBD]

Vibration: [TBD]

Drafts: [TBD]

Test Point Selection

• Minimum: -50°C
• 25% of Range: 137.5°C
• 50% of Range: 275°C
• 75% of Range: 412.5°C
• Maximum: 600°C

Results Table

Test Point	Ref Value	Observed (As Found)	Error	Limit	Pass/Fail	Observed (As Left)	Error	Pass/Fail
-50°C	[TBD]	[TBD]	[TBD]	±1°C	[TBD]	[TBD]	[TBD]	[TBD]
137.5°C	[TBD]	[TBD]	[TBD]	±1°C	[TBD]	[TBD]	[TBD]	[TBD]
275°C	[TBD]	[TBD]	[TBD]	±1°C	[TBD]	[TBD]	[TBD]	[TBD]
412.5°C	[TBD]	[TBD]	[TBD]	±1°C	[TBD]	[TBD]	[TBD]	[TBD]
600°C	[TBD]	[TBD]	[TBD]	±1°C	[TBD]	[TBD]	[TBD]	[TBD]

Stepwise Instructions

1. Preparation: Ensure the thermocouple is clean and properly connected to the calibration equipment.
2. Stabilization: Allow the thermocouple to stabilize at room temperature for at least 30 minutes.
3. Performing Readings:
   • Take three replicate readings at each test point.
4. Calculating Error: Determine the error by subtracting the reference value from the observed value.
5. Evaluation: Compare the calculated error against the acceptance criteria of ±1°C.
6. Documentation: Record all observations in the results table and ensure data integrity (ALCOA+).

Deviation Instruction for OOT

If any observed value is outside the acceptance criteria:

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

Approvals

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

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Calibration Checklist

Asset ID	Equipment	Dept	Area	Parameter	Range	Acceptance	Frequency	Traceability
CAL-0053	Thermocouple Type K	Engineering	Utilities	Temperature	-50 to 600 °C	±1°C	365 days	ISO17025

1) Pre-calibration

• [ ] Verify environmental conditions are within specified limits
• [ ] Allow equipment to warm up as per manufacturer guidelines
• [ ] Clean the thermocouple and surrounding area
• [ ] Ensure equipment is leveled
• [ ] Validate reference standards are within calibration date
• [ ] Ensure logbook is ready for data entry

2) As Found Execution

• [ ] Set thermocouple to specified setpoints
• [ ] Perform repeat measurements for accuracy
• [ ] Record raw data for all measurements
• [ ] Perform necessary calculations for results

3) OOT Immediate Actions

• [ ] Tag out the equipment if out of tolerance (OOT)
• [ ] Stop use of the thermocouple immediately
• [ ] Notify relevant personnel of OOT condition
• [ ] Document deviation and initiate investigation
• [ ] Trigger impact review as per SOP

4) As Left Verification

• [ ] Conduct post-adjustment checks to confirm accuracy
• [ ] Ensure all measurements are within acceptance limits

5) Documentation & Closure

• [ ] Update calibration label with new data
• [ ] Attach calibration certificate to logbook
• [ ] Obtain reviewer sign-off on calibration results
• [ ] Update next due date in logbook

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

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Deviation Impact Assessment

Event Summary
Asset: Thermocouple Type K 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-0053	Thermocouple Type K	Thermocouple	Engineering	Utilities	[TBD]	[TBD]	[TBD]	Temperature: -50 to 600 °C	±1°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)	Deviation (°C)
-50	[TBD]	[TBD]
0	[TBD]	[TBD]
100	[TBD]	[TBD]
300	[TBD]	[TBD]
600	[TBD]	[TBD]

As Left Results

Test Point	Measured Value (°C)	Deviation (°C)
-50	[TBD]	[TBD]
0	[TBD]	[TBD]
100	[TBD]	[TBD]
300	[TBD]	[TBD]
600	[TBD]	[TBD]

Measurement Uncertainty Statement: [TBD]

Statement of Conformity: [Pass/Fail overall]

Remarks: [TBD]

Signatures

Performed by: ______________________ Date: ___________

Checked by: ______________________ Date: ___________

Approved by: ______________________ Date: ___________

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