Temp
What this tool does
NIST ITS-90 millivolts for types J, K, T, E, N, R, S, and B, with a cold junction. This page says what the tool is for, in plain language. The working formula stays on the signed-in tool.
When to use it
Open Thermocouple types when this is the job: NIST ITS-90 millivolts for types J, K, T, E, N, R, S, and B, with a cold junction. That is usually a sensor check, a cold-junction question, or a reading that does not match the gauge.
Step-by-step
- Open Thermocouple types from the tool list.
- Fill Type, Direction, Value, Cold junction from the instrument, the drawing, or the job record. Use the unit shown beside each field.
- Run Calculate when that control is on the page, then read every result row and any warning.
- Check the result against the site procedure and the manufacturer data before you change a range, a wire, a setpoint, or a weight.
- This help page is public. Opening the tool still requires a Pro session.
Inputs
- Type
- Choose the Type that matches the instrument, the drawing, or the job. Choices include Type J, Type K, Type T, Type E, Type N, Type R.
- Direction
- Which way the conversion runs, from the engineering value to the signal or the other way.
- Value
- The number you are converting. Read the unit the screen is asking for.
- Cold junction
- The temperature at the terminal where the thermocouple wire ends, not the temperature at the measuring tip.
Results
- Result
- The reported value for Thermocouple types. Use the unit printed on that row.
- Warnings
- A warning means an entry is incomplete or outside what this tool will stand behind. Recheck the inputs and the site procedure.
Common mistakes
- Picking the wrong sensor type, or leaving the cold junction at a temperature the terminal is not at.
- Reading resistance or millivolts as if they were already a temperature.
- Using a tolerance class that is not the class stamped on the sensor.
- Do not treat a result from Thermocouple types as a substitute for the site procedure or the manufacturer data.
Standards references
These are the standards and public references named on this tool. Clause numbers appear only when the catalog already cites them.
- NIST ITS-90 Thermocouple Database (types J, K, T, E, N, R, S, and B)
- NIST Monograph 175
Offline and access
This engine can run offline after the server has cached it for the signed-in account.
A free session can read this help page. The tool card shows the name and the short summary. Opening the tool requires Pro.