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no_os_thermocouple.h File Reference

Header file of thermocouple temperature conversion routines. More...

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Functions

double no_os_typek_temp_to_voltage (double temp_celsius)
 ITS-90 Type K thermocouple forward polynomial. Converts temperature (°C) to equivalent EMF voltage (mV). Valid for 0°C to 1372°C range.
 
double no_os_typek_voltage_to_temp (double voltage_mv)
 ITS-90 Type K thermocouple inverse polynomial. Converts thermocouple voltage (mV) to temperature (°C), -200°C to 500°C. Uses separate polynomial ranges for negative and positive voltages.
 

Detailed Description

Header file of thermocouple temperature conversion routines.

Author
Mircea Vlasin (mirce.nosp@m.a.vl.nosp@m.asin@.nosp@m.anal.nosp@m.og.co.nosp@m.m)

Copyright 2026(c) Analog Devices, Inc.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

  1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
  2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
  3. Neither the name of Analog Devices, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY ANALOG DEVICES, INC. "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL ANALOG DEVICES, INC. BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Function Documentation

◆ no_os_typek_temp_to_voltage()

double no_os_typek_temp_to_voltage ( double temp_celsius)

ITS-90 Type K thermocouple forward polynomial. Converts temperature (°C) to equivalent EMF voltage (mV). Valid for 0°C to 1372°C range.

Parameters
temp_celsius- Temperature in degrees Celsius.
Returns
Equivalent thermocouple voltage in mV.
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◆ no_os_typek_voltage_to_temp()

double no_os_typek_voltage_to_temp ( double voltage_mv)

ITS-90 Type K thermocouple inverse polynomial. Converts thermocouple voltage (mV) to temperature (°C), -200°C to 500°C. Uses separate polynomial ranges for negative and positive voltages.

Parameters
voltage_mv- Thermocouple voltage in millivolts.
Returns
Temperature in degrees Celsius.
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