• State
  • Locked Locked
  • Replies 3 replies
  • Subscribers 32 subscribers
  • Views 389 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

Temperature sensor recommendation

Gergo Santha
Genius 3585 points
Other Parts Discussed in Thread: TMP112

Hi!

I'd like to measure the temperature of two heated metal blocks with the size of a box of matches. One block should be around 50 degrees Celsius, the other one is 95. The controller type is not decided yet but most likely it will be an on/off or PID, running by a MSP430. I'm looking for a voltage or digital output temperature sensor for this purpose, +/- 1 Celsius accuracy would be sufficient. The measuring point would be inside the blocks, and the main electronics would be not too far from sensors (10-20 cm). I'd also like to ask how higher temperature (95 C) will affect the digital communication lines (p.e. I2C) between a digital output sensor and the main electronics?

Thank you. 

  • 0
    TI__Mastermind 25915 points

    Greg,

    I would recommend looking into the TMP112. It's accuracy (temperature error) at most will be 0.5oC from 0oC to +65oC. In the range of -40oC to  +125oC it's accuracy (temperature error) at most will be+/-1oC.

    I am currently looking into your second question and will get back to you soon.

  • 0
    TI__Expert 4905 points

    Hi Greg,

    How will you be mounting the sensors to the blocks? Should they be fairly small?

    Thanks!

    Emmy
    Precision Systems Applications
    Texas Instruments SVA

  • 0 in reply to Emmy Denton
    Genius 3585 points

    Hi Emmy,

     

    thank you for your reply. The mounting method depends on the sensor's package so we need to find the appropriate sensor first. The blocks would be around 60 x 50 mm and their thickness is around 20...25 mm. One possible mounting method is where the sensor would be placed inside a drilled hole, which would be filled up with thermal grease.

    Thank you.

     Best regards,

    Greg