Building a Battery Cap Temperature Sensor

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  • Anawa
    Anawa Solar Expert Posts: 225 ✭✭✭
    #32
    vt, you're right, they are indeed Watermisers. To build my insert, I used one of the original battery caps. Didn't want to take a chance on the Watermiser's. Scroll to the original post to see.

    Paul

    Paul 
    in Georgia

    System 1: PV- 410w Evergreen, Mppt- Blue Sky Solar Boost, Batt - 225ah Deka AGM, 12v led house lighting,
    System 2: PV- 215w Kyocera, PWM - Morningstar PS30, Batt- 225ah Deka GC's, 12v led house lighting, Dankoff 12v water pump,
    System 3: PV- 1.5kw Kyocera, Grundfos 11 SQF well pump, 3000 gal above ground water storage, dom water & irrigation,
    System 4: PV- 6.1kw Kyocera, Mppt- Outback FM80-2ea, Inverter- Outback FX3648-2ea, Batt- 804ah GB traction, Grundfos BMQE booster pump 240v, Mitsibushi mini-splits 240v, 18k and 15k
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  • solar_dave
    solar_dave Solar Expert Posts: 2,397 ✭✭✭✭
    #33
    here are some likely glass tubes

    http://www.ebay.com/itm/40-Count-12-x-75mm-Borosilicate-Glass-Culture-Test-Tubes-With-Caps-New-/121050294251?hash=item1c2f28e7eb:g:ObQAAOSw9N1VvUCV
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  • Vic
    Vic Solar Expert Posts: 3,208 ✭✭✭✭
    #34

    An Update on the NTC Thermistor Part Number at Mouser:

    Just ran a Resistance vs displayed temperature for a Classic CC BTS.  The following part number appears to be a very good Curve Fit:

    http://www.mouser.com/ProductDetail/EPCOS-TDK/B57871S103F1/?qs=sGAEpiMZZMuBd0%2bwiCVS294ahU8xLN7tvHCHNluAMOI=

    This part has a  ' 3988K ' curve and is still 10 K ohms at 25 C.

    Have not run the curve for the Outback RTS,  BUT,  it might well need a different curve 10  K NTC Thermistor.

    Good Luck,   Vic

    Off Grid - Two systems -- 4 SW+ 5548 Inverters, Surrette 4KS25 1280 AH X2@48V, 11.1 KW STC PV, 4X MidNite Classic 150 w/ WBjrs, Beta KID on S-530s, MX-60s, MN Bkrs/Boxes.  25 KVA Polyphase Kubota diesel,  Honda Eu6500isa,  Eu3000is-es, Eu2000,  Eu1000 gensets.  Thanks Wind-Sun for this great Forum.
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  • halfcrazy
    halfcrazy Solar Expert Posts: 720 ✭✭✭
    #35
    The MidNite and Outback BTS use the same curve and are indeed both 10K
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  • Anawa
    Anawa Solar Expert Posts: 225 ✭✭✭
    #36
    Vic, thanks very much for your continued effort in helping to bring this project to a more technologically advanced and safe conclusion. Also, thanks to all other contributors and participants. 

    I think those of us that want to pursue this project now have the appropriate information to do so.

    Paul
    in Georgia
    Paul 
    in Georgia

    System 1: PV- 410w Evergreen, Mppt- Blue Sky Solar Boost, Batt - 225ah Deka AGM, 12v led house lighting,
    System 2: PV- 215w Kyocera, PWM - Morningstar PS30, Batt- 225ah Deka GC's, 12v led house lighting, Dankoff 12v water pump,
    System 3: PV- 1.5kw Kyocera, Grundfos 11 SQF well pump, 3000 gal above ground water storage, dom water & irrigation,
    System 4: PV- 6.1kw Kyocera, Mppt- Outback FM80-2ea, Inverter- Outback FX3648-2ea, Batt- 804ah GB traction, Grundfos BMQE booster pump 240v, Mitsibushi mini-splits 240v, 18k and 15k
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  • Anawa
    Anawa Solar Expert Posts: 225 ✭✭✭
    #37
    BTW, I'm ordering the glass vials and thermistors using the above posted links. Thanks guys for making this easier to us "solar techno impaired" individuals.
    Paul 
    in Georgia

    System 1: PV- 410w Evergreen, Mppt- Blue Sky Solar Boost, Batt - 225ah Deka AGM, 12v led house lighting,
    System 2: PV- 215w Kyocera, PWM - Morningstar PS30, Batt- 225ah Deka GC's, 12v led house lighting, Dankoff 12v water pump,
    System 3: PV- 1.5kw Kyocera, Grundfos 11 SQF well pump, 3000 gal above ground water storage, dom water & irrigation,
    System 4: PV- 6.1kw Kyocera, Mppt- Outback FM80-2ea, Inverter- Outback FX3648-2ea, Batt- 804ah GB traction, Grundfos BMQE booster pump 240v, Mitsibushi mini-splits 240v, 18k and 15k
    · Share on Twitter
  • Vic
    Vic Solar Expert Posts: 3,208 ✭✭✭✭
    #38
    halfcrazy said:
    The MidNite and Outback BTS use the same curve and are indeed both 10K


    Hi Ryan,

    Thanks!

    In another Thread,  I did note that the OB RTS did appear to be identical to the MN BTS ...  had seen you and boB mention that either here or on the MN Forum,  but had  trouble finding that in a Search.

    Thank you very much!     73,    Vic

    Off Grid - Two systems -- 4 SW+ 5548 Inverters, Surrette 4KS25 1280 AH X2@48V, 11.1 KW STC PV, 4X MidNite Classic 150 w/ WBjrs, Beta KID on S-530s, MX-60s, MN Bkrs/Boxes.  25 KVA Polyphase Kubota diesel,  Honda Eu6500isa,  Eu3000is-es, Eu2000,  Eu1000 gensets.  Thanks Wind-Sun for this great Forum.
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