Engineering Documents · Free Template
Thermowell Data Sheet Template
A data sheet for thermowells with the process data the vendor needs for the ASME PTC 19.3 TW calculation: velocity, density, pressure and temperature.
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
- Drop down lists for consistent entries
- A4 portrait 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 thermowell data sheet looks.
ProjectBoiler 3 upgrade
RevisionA
Date24 Oct 2026
Requisition noREQ INST 035
Specification
| No | Parameter | Value | Unit / notes |
|---|---|---|---|
| General | |||
| 1 | Tag number | TW 2205 | |
| 2 | Sensor tag / type | TE 2205, Pt100 | |
| 3 | Line number / size | 6" Sch 40 | |
| 4 | P&ID number | PID 200 05 | |
| Process | |||
| 5 | Fluid | Steam | |
| 6 | Operating pressure / temperature | 16 / 250 | bar g / °C |
| 7 | Design pressure / temperature | 20 / 300 | bar g / °C |
| 8 | Maximum velocity | 30 | m/s |
| 9 | Density / viscosity | 7.1 / 0.02 | kg/m³ / cP |
| Thermowell | |||
… and 15 more rows in the download.
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About the Thermowell Data Sheet
Thermowells fail mainly from flow induced vibration. A data sheet that includes velocity and density lets the vendor check the design against ASME PTC 19.3 TW before purchase.
How to fill in this template
- Fill in process conditions, especially maximum velocity and density.
- Choose profile, connection and insertion length.
- Specify bore to suit the sensor diameter.
- Request the wake frequency calculation and material certificates.
- Issue with the requisition.
What the formulas do
- No formulas: specification document laid out in sections like an ISA 20 style data sheet.
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Frequently Asked Questions
Why is velocity needed?
Vortex shedding frequency rises with velocity; the well must stay clear of resonance.
Tapered or straight?
Tapered wells are stiffer and respond faster; straight wells are cheaper.
What is U length?
The insertion length below the process connection.
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