Melissa, You can use an instrumentation amplifier to measure a thermocouple. I did find an old post that discusses biasing the thermocouple and putting it into gain: e2e.ti.com/.../223435 The amplifier is set to a gain of 1001, but you may need to change…
Hi Philippe,
I am unfortunately not an expert when it comes to mechanics and how to best connect the RTD to the cold junction. This depends a lot on how you design your cold junction/thermal block.
The following reference design ( www.ti.com/.../tipd109…
Other Parts Discussed in Thread: ADS1118 , TIPD109 , ADS1248 , ADS1220 Hello,
I have the some questions about thermocouple solutions. Our customer is looking for the best solution of K type thermocouple. Measurement range :20C ~ 1000C, Accuracy:0.5C, Disconnection…
Other Parts Discussed in Thread: ADS1118 , TIPD109 , INA114 I am not able to amplify the signal of a thermocouple T-type using the INA125 . Does anyone have a simple circuit ?
Other Parts Discussed in Thread: ADS1220 , ADS1118 , TIDA-00189 , ADS1118EVM , TIPD109 Hi All,
Can anyone suggest method to measure k-type thermocouple temperature using ADS1220?
After getting the ADC reading from the ADS1220 ,how to convert it into the equivalent…
Hello Connor,
Connecting thermocouple sensors to an instrumentation amplifier or programmable gain amplifier is a common signal conditioning scheme. Consider using the INA333 or INA188 which are zero-drift instrumentation amplifiers which feature extremely…
Hello Fakhruddin,
First I recommend you carefully read the Thermocouple Wiki
https://en.wikipedia.org/wiki/Thermocouple
...and understand the theory about metal junctions. A thermocouple circuit is complicated and is more about layout and materials than…
Hi,
I'm not sure what the problem is. It looks like the ADS1118 is having problems with ADS1118 internal temperature sensor measurement, or ADC measurement values. I'm not sure if this is a problem with the ADC communications or the USB interface. I…
Dear Shu-Cheng LIN -
the HDC2010 or HDC2080 are integrated humidity and temperature sensor devices, with I2C interface to MCU. You are correct, they have no interface or conditioning circuitry inside to accommodate an external temperature probe / thermocouple…
