Maintenance · Free Template
Instrument Maintenance Log Template
A daily log of instrument jobs: what was done on which tag, why, what was replaced and how long it took. Totals show breakdown against preventive work.
Excel (.xlsx)Printable PDFFilled exampleFree, no sign up
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- How to Use sheet with steps
- Template sheet, blank and ready
- Example sheet, filled in
- 8 built in formulas
- A4 landscape print setup
- Works in Excel, Google Sheets and LibreOffice
Preview of the Filled Example
This is the Example sheet from the download, so you can see exactly how the completed instrument maintenance log looks.
SectionInstrument maintenance
MonthOctober 2026
Shift systemGeneral shift
CMMSWork orders in CMMS
Jobs
| Date | Tag | Work type | Problem | Cause | Action | Hours | Parts used | WO no | By | Status | Remarks |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 20 Oct 2026 | LT 2101 | Breakdown | Level reading high | Wet leg drained | Refilled wet leg, replaced vent valve | 2.5 | Needle valve | WO 8812 | Tech A | Closed | |
| 21 Oct 2026 | PT 1101 | Calibration | Scheduled | 5 point calibration, as found pass | 1.5 | WO 8820 | Tech B | Closed | |||
| 22 Oct 2026 | FV 3101 | Breakdown | Valve hunting | Positioner feedback arm loose | Tightened arm, autotune | 1.0 | WO 8831 | Tech A | Closed |
Total hours:5.0 · Breakdown jobs:2 · Preventive and calibration jobs:1 · Open jobs:0
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About the Instrument Maintenance Log
A simple maintenance log builds the history needed for root cause analysis, spare parts planning and calibration interval decisions, even where a CMMS exists.
How to fill in this template
- Add one row per job with tag and work type.
- Describe problem, cause and action briefly.
- Record hours and parts.
- Keep status up to date.
- Review totals monthly: a high breakdown share signals weak preventive maintenance.
What the formulas do
- Totals count jobs by work type and sum hours.
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Frequently Asked Questions
Why log cause separately from action?
Causes reveal repeat problems; actions alone do not.
What breakdown share is good?
Lower is better; many plants aim for most hours on planned work.
Can this replace a CMMS?
For small sites yes; otherwise use it as a shift summary.
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Instrumentation calibration and troubleshooting guide
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