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ServiceF1rst HVACPROTech® Admin

Joined: 07 May 2006 Posts: 6300
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Reeferman LEVEL-VIII


Joined: 29 May 2006 Posts: 632
64.14 Location: Calgary Alberta
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Posted: Wed Apr 30, 2008 11:01 am Post subject: |
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| Did they say if they could be used around emf? Such as mobile a/c or transport. Or are they the same as the first ones? |
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ServiceF1rst HVACPROTech® Admin

Joined: 07 May 2006 Posts: 6300
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Posted: Wed Apr 30, 2008 1:19 pm Post subject: |
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They did not make any indication relevant to the EMF issue, nor did I ask them about it Reef. The technical specifications that accompany most of these digital sets - J/B and Digi-Cool included do not provide an abundance of information about the transducers/thermistors or processors used internally, I assume due to proprietary concerns, although Testo is more than forth coming with internal component specifications, I would like to see all of the DMG OEM's follow their lead. I am assuming and perhaps inaccurately there have been no changes made in this regards. Maybe GF can check with his source to see if they can offer any insight relevant to the transducer protection in the DM4-3.
I will also say in defense of the J/B model, they seem to have addressed the majority of the concerns that we had with the original DM-2 the only exception being the sensor connectors. _________________
Of all the instruments utilized in the HVAC/R trades - I trust analog gauges the least. |
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gonefishing Global Moderator


Joined: 05 Jun 2006 Posts: 2771
228.96 Location: Texas
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Posted: Wed Apr 30, 2008 6:59 pm Post subject: |
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| Reeferman wrote: | | Did they say if they could be used around emf? Such as mobile a/c or transport. Or are they the same as the first ones? |
From what I understand, units serial numbered prior to 1652 did have some transducer issues.
This was due to, what I understand, the transducer coming loose from it's base. That issue was resolved with the
addition of an epoxy sealed transducer. Don't take this to the bank yet, as I may be un-clear on what I was told.
I will be in further contact with the J/B engineers, and bring as much light to this issue as is possible.
I do know J/B is extremely interested in hearing about the weak points so design changes can be made as necessary.
They want to be as pro-active in these issues as is possible. I will provide any up-dated information I am able to receive.
GF _________________ Leonardo Da Vinci once said:
"Those who give themselves to ready and rapid practice before they have learned the theory,
resemble sailors who go to sea in a vessel without a rudder" |
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Maineiac Global Moderator~Keeper Of The Flame


Joined: 03 Jun 2006 Posts: 2782
404.37 Location: Middle of nowhere,3 feet from hell and 20 miles from water
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Posted: Wed Apr 30, 2008 7:00 pm Post subject: |
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| can't wait, got a line already waiting to test em |
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gonefishing Global Moderator


Joined: 05 Jun 2006 Posts: 2771
228.96 Location: Texas
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Posted: Wed Apr 30, 2008 7:05 pm Post subject: |
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| Maineiac wrote: | | can't wait, got a line already waiting to test em |
I think they will be well received. The addition of the protective Boot, and the completely new sensor clamp design
should make them a pretty solid instrument. Just gotta get used to the Zepplin.
GF _________________ Leonardo Da Vinci once said:
"Those who give themselves to ready and rapid practice before they have learned the theory,
resemble sailors who go to sea in a vessel without a rudder" |
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Glenn Harrison LEVEL-IV


Joined: 13 Nov 2006 Posts: 60
14.97 Location: Round Lake Beach, Illinois
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Posted: Wed Apr 30, 2008 7:11 pm Post subject: |
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Thanks for the update SF1. Been wondering where these were now that we have had the weather break and A/C season has begun.  |
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ServiceF1rst HVACPROTech® Admin

Joined: 07 May 2006 Posts: 6300
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Posted: Wed Apr 30, 2008 11:20 pm Post subject: |
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| gonefishing wrote: | | Reeferman wrote: | | Did they say if they could be used around emf? Such as mobile a/c or transport. Or are they the same as the first ones? |
From what I understand, units serial numbered prior to 1652 did have some transducer issues.
This was due to, what I understand, the transducer coming loose from it's base. That issue was resolved with the
addition of an epoxy sealed transducer. Don't take this to the bank yet, as I may be un-clear on what I was told.
I will be in further contact with the J/B engineers, and bring as much light to this issue as is possible.
I do know J/B is extremely interested in hearing about the weak points so design changes can be made as necessary.
They want to be as pro-active in these issues as is possible. I will provide any up-dated information I am able to receive.
GF |
Appreciate the update and assistance G, thank you. _________________
Of all the instruments utilized in the HVAC/R trades - I trust analog gauges the least. |
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ServiceF1rst HVACPROTech® Admin

Joined: 07 May 2006 Posts: 6300
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Posted: Wed Apr 30, 2008 11:47 pm Post subject: |
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| gonefishing wrote: | | Maineiac wrote: | | can't wait, got a line already waiting to test em |
I think they will be well received. The addition of the protective Boot, and the completely new sensor clamp design
should make them a pretty solid instrument. Just gotta get used to the Zepplin.
GF |
I think they have definitely made what appears to be substantial improvements comparative to the original DM-2. I am looking forward to the evaluation returns.
As I've said before I personally liked the manifold on the original DM-2, but I think the Zeppelin is the flagship in J/B's manifold line. And as I've also said it is not so dissimilar from the Yellow Jacket Titan.
J/B Zeppelin Four Valve Manifold:
 _________________
Of all the instruments utilized in the HVAC/R trades - I trust analog gauges the least. |
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ServiceF1rst HVACPROTech® Admin

Joined: 07 May 2006 Posts: 6300
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Posted: Wed Apr 30, 2008 11:50 pm Post subject: |
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| Glenn Harrison wrote: | Thanks for the update SF1. Been wondering where these were now that we have had the weather break and A/C season has begun.  |
No problem Glenn, I pass it along as I get it. _________________
Of all the instruments utilized in the HVAC/R trades - I trust analog gauges the least. |
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