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  1. #1
    Join Date
    Jul 2015
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    Ireland
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    P51-870 Titan digital manifold

    Does anyone use the P51-870 digital manifold's?
    If so can you let me know what your thoughts are, the pro's and con's.

    I have the Testo 570-2, got it a couple of years ago, but it looks like its given up the will to live.
    I was using it at the weekend and it got wet on the job, and hasn't been the same since. Can't get it to zero out.

    So thinking of investing in the Yellow Jacket P51-870.
    I know I can then also get the pipe clamps for the superheats and sub-cooling temps, but can you get the Velcro clamps to wrap around bigger pipes?

  2. #2
    Join Date
    Nov 2016
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    NYC
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    I dont think anyone will have em in stock until end of april? If thats not the case, let me know, i want to grab a set myself.

  3. #3
    Join Date
    Nov 2016
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    NYC
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    Johnstone has em in stock, ABCO wont be stocking them from what I heard, special order only.

  4. #4
    Join Date
    Mar 2007
    Location
    In a state of confusion
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    Might want to check how they ran that hanging hook through the top of the unit. Lot of old JB units bit the dust from that hole and hook through the top.

  5. #5
    Join Date
    Feb 2007
    Location
    S.E. Missouri
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    I just bought the P51-870 myself yesterday. I had sold a P51-860 to one of our customers Thursday. ( I work at a supply house ) We sell another very popular digital manifold.

    The customer that bought the P51-860 has bought over 4 of the other brand in the past five years as he has had many different kinds of problems with them. He just wanted a basic digital manifold to check superheat and subcooling with. He is not a computer/smartphone person, so the bluetooth is not important to him. I showed him my AK900 before they were discontinued, now he wishes he would have got one.

    Anyway, on both my 870 and his 860, the hook looks like it goes down to the Titan manifold, just passing through the case. (without taking it apart, as it would void the warranty) The housing seems like a similar grade of polymer, like the AK900.

    Now I also have the Yellow Jacket system analyzer. This new one is totally different from that one, as this one has a rechargeable lithium ion battery pack, and not the wad of AA batteries. This one also uses thermistor clamps, instead of Type K thermocouples.

    The really exciting thing I like, it uses 1/8" stereo plugs for the clamps and the external micron gauge. I believe they power the micron gauge with the third conductor. I tried my Cooper thermistors in the extension cords it comes with, as the Cooper plug bottoms out in the hole, and they work!

    The only thing I wish they could change is the micro USB connector to charge it. While it is convenient, the internal receptacle appears to be surface mounted to the board, and if it is, I would treat it as fragile. The older system analyzer used the bigger USB-B receptacle, that I believe was through hole mount.

    So far, my customer is pleased with his, as I am mine as well.

    Thanks!

  6. #6
    Join Date
    Sep 2014
    Location
    Portland, Oregon, United States
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    596
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    1 week into these, used them twice and they leak. yellow jacket won't send me a replacement. Seriously $500... never buying YJ products again.

  7. #7
    Join Date
    Mar 2007
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    In a state of confusion
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    The manifold or inside the gauge?

  8. #8
    Join Date
    Nov 2016
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    NYC
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    Quote Originally Posted by heatingelement View Post
    1 week into these, used them twice and they leak. yellow jacket won't send me a replacement. Seriously $500... never buying YJ products again.
    Post on here in the YJ forum, very responsive, can you return it at the supply shop you bought it at? at the very lleast your covered under the YJ warranty for a year.

  9. #9
    Join Date
    Dec 2012
    Location
    columbus, OH
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    What are the temp clamps like? I wish i had a good digital gauge. I dont like the appions and sure as hell am not going with testo or fp. And i dont want the wireless transducer probes like are getting popular. Its hard enough to put hoses on half the systems i work on. Hope someone has a digital gauge for me.

    I was in a jam and got a refrigerant scale that is blue tooth but actually does not display weight on the scale... how could a manufacturer call this an improvement. Even though its easy to connect and use on the phone i hate it and it bounces around on my truck since ingot a real set of scales that display weight....


    Sent from my iPhone using Tapatalk

  10. #10
    Join Date
    Feb 2007
    Location
    S.E. Missouri
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    266
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    The temp clamps are on the smaller side, smaller than the ones on my AK900 and other brands.Mine have a lot of tension, kinda makes me nervous how good the polymer they are made from is. They are a standard thermistor, not thermocouples. They have a strip of aluminum or stainless to transfer heat more evenly to the thermistor. I like the AK900 ones, but I always worry about the thermistor can making good thermal contact with the pipe.

    I bought two Cooper Atkins 4005 thermistor pipe clamps for my AK900, as I like the contact better. I modified it to use 2 conductor 3.5 mm, or mono 1/8" audio connectors. I noticed the pipe clamps on the YJs use a three conductor 3.5 mm or stereo 1/8" audio connectors, plus extension cables come included. On the 860, you can get the micron sensor, it plugs into either of the temp inputs, so I am guessing that on evacuation mode, it sends power through the ring, but in t/p mode just uses the tip and sleeve for the thermistors, as it read perfectly using my Cooper clamps on the manifold set. The only thing is, if you plug them directly into the recessed receptacle, the plug will not reach far enough to fully seat, but using the included extension eliminates that.

    So, if you don't like the included clamps, at least there is an easy alternative.

  11. #11
    Join Date
    Dec 2012
    Location
    columbus, OH
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    Quote Originally Posted by Silver06 View Post
    The temp clamps are on the smaller side, smaller than the ones on my AK900 and other brands.Mine have a lot of tension, kinda makes me nervous how good the polymer they are made from is. They are a standard thermistor, not thermocouples. They have a strip of aluminum or stainless to transfer heat more evenly to the thermistor. I like the AK900 ones, but I always worry about the thermistor can making good thermal contact with the pipe.

    I bought two Cooper Atkins 4005 thermistor pipe clamps for my AK900, as I like the contact better. I modified it to use 2 conductor 3.5 mm, or mono 1/8" audio connectors. I noticed the pipe clamps on the YJs use a three conductor 3.5 mm or stereo 1/8" audio connectors, plus extension cables come included. On the 860, you can get the micron sensor, it plugs into either of the temp inputs, so I am guessing that on evacuation mode, it sends power through the ring, but in t/p mode just uses the tip and sleeve for the thermistors, as it read perfectly using my Cooper clamps on the manifold set. The only thing is, if you plug them directly into the recessed receptacle, the plug will not reach far enough to fully seat, but using the included extension eliminates that.

    So, if you don't like the included clamps, at least there is an easy alternative.
    Thanks, thats what i wanted to hear and enough to get me to bite the bullet. Are they headphone jack type plugs?


    Sent from my iPhone using Tapatalk

  12. #12
    Join Date
    Nov 2016
    Location
    NYC
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    Quote Originally Posted by Silver06 View Post
    The temp clamps are on the smaller side, smaller than the ones on my AK900 and other brands.Mine have a lot of tension, kinda makes me nervous how good the polymer they are made from is. They are a standard thermistor, not thermocouples. They have a strip of aluminum or stainless to transfer heat more evenly to the thermistor. I like the AK900 ones, but I always worry about the thermistor can making good thermal contact with the pipe.

    I bought two Cooper Atkins 4005 thermistor pipe clamps for my AK900, as I like the contact better. I modified it to use 2 conductor 3.5 mm, or mono 1/8" audio connectors. I noticed the pipe clamps on the YJs use a three conductor 3.5 mm or stereo 1/8" audio connectors, plus extension cables come included. On the 860, you can get the micron sensor, it plugs into either of the temp inputs, so I am guessing that on evacuation mode, it sends power through the ring, but in t/p mode just uses the tip and sleeve for the thermistors, as it read perfectly using my Cooper clamps on the manifold set. The only thing is, if you plug them directly into the recessed receptacle, the plug will not reach far enough to fully seat, but using the included extension eliminates that.

    So, if you don't like the included clamps, at least there is an easy alternative.
    the polymer is very strong, I have the mantooths with clamps and its way more robust than the fieldpiece clamps.

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  14. #13
    Join Date
    Nov 2016
    Location
    NYC
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    Is the micro gauge built into the manifold or is it the same probe that comes with the mantooth set ?

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