Calibrations

This functionality allows technicians to record calibration activities performed on IoT devices. All calibration records are stored with the corresponding device for traceability, quality assurance, and compliance purposes.

Accessing the Form

  1. Navigate to the device settings screen.
  2. Select the Calibrations tab.
  3. The calibration entry form will appear.

Field Descriptions

General Information

  • Technician name *
    Enter the full name of the technician performing the calibration. Required.
  • Calibration equipment used *
    Specify the reference equipment or standard instrument used for calibration (e.g., “Fluke 5522A Calibrator”). Required.
  • Date
    Defaulted to the current date. Adjust if calibration was performed earlier.

Probe Information

  • Probe Id *
    Select the probe identifier from the dropdown list. Each probe corresponds to a sensor or measurement input on the device. Required.
  • Probe Description
    Optional free text to describe the probe type or purpose (e.g., “Temperature sensor #2”).

Calibration Data

  • Probe value *
    The measured value provided by the probe at the time of calibration (e.g., 100.2 °C). Required.
  • Standard value *
    The true or reference value provided by the calibration equipment (e.g., 100.0 °C). Required.
  • Tolerance limit *
    The maximum acceptable deviation between the probe and standard value, expressed as a percentage. Required.
  • Measurement error (calculated)
    Automatically computed as:Measurement Error=Probe value – Standard valueStandard value×100%Measurement Error=Standard valueProbe value – Standard value​×100%This field updates automatically. If the error exceeds the tolerance limit, the calibration fails.

Additional Information

  • Comment
    Free text field for additional notes (e.g., corrective actions, environmental conditions, probe replacement).

Actions

  • Add Calibration
    Stores the entered calibration data in the list for this device. Multiple calibrations can be added sequentially.
  • Update
    Saves all calibration entries to the system. Use after adding one or more calibrations.
  • Cancel
    Discards unsaved entries and returns to the previous screen.
  • Delete (trash icon)
    Removes the currently entered calibration before saving.

Example Workflow

  1. Enter your name in Technician name.
  2. Enter the calibration equipment used.
  3. Confirm or adjust the date.
  4. Select the Probe Id from the list and optionally add a description.
  5. Enter Probe value and Standard value.
  6. Set the tolerance limit.
    • The system calculates measurement error automatically.
    • If the error is within tolerance → calibration passes.
    • If the error exceeds tolerance → corrective action is needed.
  7. Add any comments.
  8. Click Add Calibration.
  9. When all calibrations are entered, click Update to save.

Notes

  • Fields marked with * are mandatory.
  • Ensure that calibration equipment is itself within a valid certification period.
  • Always review measurement error vs. tolerance before saving.
  • All saved calibrations are time-stamped and associated with the selected device for audit purposes.