TM-902C CHEAP-O THERMO-Meter Review & Teardown!

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ความคิดเห็น • 39

  • @Nazmi_PWM.C
    @Nazmi_PWM.C 2 ปีที่แล้ว +1

    For those interested: The Brymen 869s multimeter also has a double thermocouple. In the range of -50c+1000c. accuracy 0.3% resolution 0.1c

    • @KeepOnTesting
      @KeepOnTesting  2 ปีที่แล้ว +2

      As does the UNI-T UT181A ..
      Dual Temp -40°C/1000°C +/- 1%

  • @AiOinc1
    @AiOinc1 2 ปีที่แล้ว +1

    I feel the extreme low cost of this product does justify it's lack of features no problem, and it's reasonable robustness and accuracy are just a bonus.
    Who needs a tilt stand when you won't feel bad drilling a hole in your $5 device to hang it on the wall? Why ask for a backlight when the amount of money you save will allow you to buy a thrift store lamp for no money instead?

  • @radius.indrawan
    @radius.indrawan 2 ปีที่แล้ว +2

    Been using it for some years, but mine come with red push on-off button instead of slide switch. It's cheap but works.

  • @labernese
    @labernese 2 ปีที่แล้ว +1

    Thanks man, I’ll be picking up a few of these for work 👍

  • @arnavkatyal2698
    @arnavkatyal2698 2 ปีที่แล้ว +1

    Hello. It was fucking cold in december! great that they build this!

    • @arnavkatyal2698
      @arnavkatyal2698 2 ปีที่แล้ว

      like some experts say: expensive is garbage!(sometimes)

  • @yambo59
    @yambo59 2 ปีที่แล้ว +1

    probe style pickup with coil cored would be a nice cheap upgrade.

    • @KeepOnTesting
      @KeepOnTesting  2 ปีที่แล้ว +1

      Definitely doable with the aftermarket thermocouple options. 😀

  • @shaunmorrissey7313
    @shaunmorrissey7313 2 ปีที่แล้ว +1

    Doesn't have to be expensive to be useful, If I can find one for that sort of price I'll have one, I use the thermocouple on my multimeter quite a lot.

    • @KeepOnTesting
      @KeepOnTesting  2 ปีที่แล้ว +1

      Sage advice Shaun. Hard to go wrong with this unit.

  • @petroniopalmeira7855
    @petroniopalmeira7855 2 ปีที่แล้ว

    Dear Darren, I would like you to do a Review of the DT8908D multimeter, because it seemed very complete in what it promises, however.... I trust your evaluation more

    • @KeepOnTesting
      @KeepOnTesting  2 ปีที่แล้ว

      Thx for putting that on my radar Petronio..I just ordered one for review 👍

  • @aneesrehman9816
    @aneesrehman9816 ปีที่แล้ว

    I am using same from few months on my 2 stroke engine for CHT reading, but my one runs on 9v battery and it get hang after few minutes so need to restart it after a while, may be my one have some problem inside and i need to buy the newer model.

    • @KeepOnTesting
      @KeepOnTesting  ปีที่แล้ว

      It's been performing very well, no hiccups as yet. Try another unit and I'm sure you'll be fine. Interesting yours is a 9v unit 🤔

  • @guilhermedealmeida2299
    @guilhermedealmeida2299 2 หลายเดือนก่อน

    Is it good for measuring the temperature of the soldering iron tip?

  • @rinqucosta2422
    @rinqucosta2422 2 ปีที่แล้ว

    Very cheap but very useful device

  • @ericchang7706
    @ericchang7706 2 ปีที่แล้ว +1

    Pffft...No shielding?!😉

  • @krzysztofg2025
    @krzysztofg2025 2 ปีที่แล้ว

    👍

  • @Albi623
    @Albi623 2 ปีที่แล้ว +1

    U from speed

  • @LagrangePoint0
    @LagrangePoint0 2 ปีที่แล้ว

    Nice review!

    • @KeepOnTesting
      @KeepOnTesting  2 ปีที่แล้ว +1

      Thx 👍

    • @LagrangePoint0
      @LagrangePoint0 2 ปีที่แล้ว

      ​@@KeepOnTesting I found your channel while looking at Uni-T reviews and subscribed because you're very charismatic and energetic, your reviews are some of the best over here.

  • @bhushan9066
    @bhushan9066 2 ปีที่แล้ว

    How does it work?

    • @shaunmorrissey7313
      @shaunmorrissey7313 2 ปีที่แล้ว +2

      Thermocouples are made with two wires of different metals joined together at one end to form a junction. As the temperature changes, the two dissimilar metals begin to deform, causing a change in resistance.

    • @bhushan9066
      @bhushan9066 2 ปีที่แล้ว +1

      @@shaunmorrissey7313 so how do they get back in shape after cooling down?

    • @bhushan9066
      @bhushan9066 2 ปีที่แล้ว +1

      @@KeepOnTesting and what material is used for the junction or sensor?

    • @KeepOnTesting
      @KeepOnTesting  2 ปีที่แล้ว +2

      @@bhushan9066 most common type is Nichrome contains 80% Ni and 20% Cr...due to its wide temperature range. Look at The Seebeck effect for more detailed information 😉👍

    • @bhushan9066
      @bhushan9066 2 ปีที่แล้ว

      @@KeepOnTesting Thanks a lot! So, the change in temperature generates EMF and then some sensors and resistors with the IC do the rest of the calculation I guess.

  • @mp1454
    @mp1454 2 ปีที่แล้ว +1

    😀👏👍👍👍

  • @MrRadiorobot
    @MrRadiorobot 2 ปีที่แล้ว +1

    Cheapo digital thermometer...that makes me so hot!

  • @Angrychemist666-g4x
    @Angrychemist666-g4x 6 หลายเดือนก่อน +1

    Garbage! Mines is off 18 degrees

    • @KeepOnTesting
      @KeepOnTesting  6 หลายเดือนก่อน

      Yikes..not good.