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  1. #1

    Giving up stem thermometers to check temp rise and drop forever

    ...so I have been researching and found a Fluke dual port differential reading thermometer for over four hundred dollars...but made in China.
    That was the deal breaker.

    I want a good thermometer that does not need to be calibrated every time I use it.

    Curious as to what other techs are buying?

  2. #2
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,400
    I've got 2 Fluke 52s that are about 17-18 years old.

    I'm not fond of them anymore as I doubt K-type probes more and more daily.

    I'm looking seriously at Cooper dual-input thermometers lately.

  3. #3
    Join Date
    Jul 2005
    Posts
    5,365
    http://www.cooper-atkins.com/Products/Thermistors/

    I have the SHR77A. High accuracy, never needs to be calibrated. Solid instrument. Probe storage could use improvement, but once you get a routine down you can manage to get them in there and get it closed without much hassle. I bought an extra pipe strap so I could check SH and SC simultaneously. The Cooper pipe straps are more accurate than any temperature clamps that I've tried.

  4. #4
    Good advice. Cooper was one of the brands at the forefront of my list.

    Thanks

  5. #5
    Join Date
    May 2007
    Location
    Central NJ Area
    Posts
    788
    I like Cooper products as well. I have a few of their stick thermometer. i keep one in my pen pocket for taking quick temp measurements. Cooper products are used alot in testing food preperation and saftey/code enforcement testing to make sure that chinese cat meat is stored at the to correct temp. I too have Fluke 52 with k-type thermocouples which i do not like as much anymore since i've been exposed to thermistor accuracy.

    I keep My Fluke 52 in my Combustion analyzer case for checking temp rise, but i wish they had thermistor sensors. I'm more interested in accuracy more then speed. I like the tool just not the sensors. I may have to get a cooper setup. I wouldn't mind having another Cooper product period.

    WHAT THERMOMETER (TYPE, Brand<model) WOULD YOU USED TO DOUBLE CHECK A THERMOSTATS ACCURACY?

  6. #6
    Join Date
    Jul 2005
    Posts
    5,365
    Quote Originally Posted by Nytefog View Post
    I like Cooper products as well. I have a few of their stick thermometer. i keep one in my pen pocket for taking quick temp measurements. Cooper products are used alot in testing food preperation and saftey/code enforcement testing to make sure that chinese cat meat is stored at the to correct temp. I too have Fluke 52 with k-type thermocouples which i do not like as much anymore since i've been exposed to thermistor accuracy.

    I keep My Fluke 52 in my Combustion analyzer case for checking temp rise, but i wish they had thermistor sensors. I'm more interested in accuracy more then speed. I like the tool just not the sensors. I may have to get a cooper setup. I wouldn't mind having another Cooper product period.

    WHAT THERMOMETER (TYPE, Brand<model) WOULD YOU USED TO DOUBLE CHECK A THERMOSTATS ACCURACY?
    I use my IR for checking t-stats. I move the laser spot around until the reading on the IR matches the reading on the t-stat, then say "See there, your t-stat is accurate".

  7. #7
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,741
    Cooper SH66A.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  8. #8
    Join Date
    Jun 2011
    Location
    Central Indiana
    Posts
    612
    Does anyone else make a dual probe thermistor style meter that is worth anything except Cooper. My boss has one and I agree that its great, but the design is horrible. I am looking for something smaller and more friendly to use. Is there even anything like that out there?
    The only true knowledge is the pursuit of knowledge

  9. #9
    Join Date
    May 2007
    Location
    Central NJ Area
    Posts
    788
    The fluke 52 isn't a bad meter if you can get thermistor temp probes for it so it would be more accurate. I am in search for thermistor sensors for it as well. Even with the k-type the Fluke 52 is still a very high quality product.

    My next purchase is a coope sch77. If you can afford it, its way better just to buy the better product. Just the fact that i can prevent you from making a mistake on a serivce call will pay for its self and then some....Nothing more embrassing then having to go on a follow up call...at least of you a competent tech that takes pride in their work.

  10. #10
    Join Date
    Mar 2007
    Location
    wedged in freezer shelf
    Posts
    6,554
    Quote Originally Posted by 5thRoot View Post
    Does anyone else make a dual probe thermistor style meter that is worth anything except Cooper. My boss has one and I agree that its great, but the design is horrible. I am looking for something smaller and more friendly to use. Is there even anything like that out there?
    OP don't want to hear about it but you could use a Digi-Cool AK-900 for a dual thermometer. I saw some UEi thermistor thermometers too.
    “If You Can Dodge A Wrench You Can Dodge A Ball”

  11. #11
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,400
    Quote Originally Posted by Nytefog View Post
    The fluke 52 isn't a bad meter if you can get thermistor temp probes for it so it would be more accurate. I am in search for thermistor sensors for it as well. Even with the k-type the Fluke 52 is still a very high quality product.

    My next purchase is a coope sch77. If you can afford it, its way better just to buy the better product. Just the fact that i can prevent you from making a mistake on a serivce call will pay for its self and then some....Nothing more embrassing then having to go on a follow up call...at least of you a competent tech that takes pride in their work.
    I don't think that you're going to find thermistor type sensors for a thermocouple thermometer.

  12. #12
    Join Date
    Dec 2006
    Location
    new england
    Posts
    612
    Quote Originally Posted by hvacrmedic View Post
    http://www.cooper-atkins.com/Products/Thermistors/

    I have the SHR77A. High accuracy, never needs to be calibrated. Solid instrument. Probe storage could use improvement, but once you get a routine down you can manage to get them in there and get it closed without much hassle. I bought an extra pipe strap so I could check SH and SC simultaneously. The Cooper pipe straps are more accurate than any temperature clamps that I've tried.
    X2...
    Chaos equals cash$$$

  13. #13
    Join Date
    Mar 2009
    Location
    Mid-Mo
    Posts
    3,594
    I've had an SH66A and now have an SRH77A and it is a solid tool. Dropped, stepped on, and very accurate. Great options of accessories.

    If you aren't in any hurry, watch eBay. I bought my 66 for 50 bucks and the 77 for 125.

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