Today's Message Index:
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1. 07:38 PM - Re: VM1000 sensor question (Ralph E. Capen)
2. 08:00 PM - Re: VM1000 sensor question (Ralph E. Capen)
3. 10:16 PM - Re: VM1000 sensor question (Larry Ford)
Message 1
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Subject: | Re: VM1000 sensor question |
Dean,
There are two different sensors - both use the Hirschmann connector. I had
one of the early VM1000's and ditched it when I saw this coming.
I may have a FI sensor at my hangar - but I may have already parted it
out...I'll check.
Ralph
----- Original Message -----
From: "DEAN PSIROPOULOS" <dean.psiropoulos@verizon.net>
Sent: Friday, April 29, 2011 11:51 PM
Subject: AeroElectric-List: VM1000 sensor question
> <dean.psiropoulos@verizon.net>
>
>
> Is there anyone who knows the ins and outs of the VM1000 B&W engine
> monitor
> system. When I originally bought mine 10 years ago I ordered it for a
> carbureted engine. The engine I finally installed has fuel injection
> which
> has higher fuel pressure than a carb engine.
>
> The VM1000 display shows fuel pressure pegged and flashing at 10 PSI. I
> thought that the only thing that might be required to fix this was a
> software change but a friend suggested I might need a new sensor with a
> higher range as well. Would anybody know about this, did VM use two
> different fuel pressure sensors? What brand and model number of sensor
> were
> they? My sensor is a fancy 4 wire unit with a Hirschman connector.
>
> Since VM has been absorbed by JPI my unit is no longer supported (only the
> VM1000C units are still supported) and talking with JPI at Sun N Fun
> confirmed my suspicions that they bought VM to remove one of their
> competitors from the market. That being the case, I obviously can't get a
> software update for the DPU but I might be able to recalibrate the unit to
> get some useful information by putting a resistor in parallel with the
> sensor to have the 0-10 PSI on the display correspond to 0-30 PSI at the
> sensor.
>
> Anyone know the guy who invented the VM1000? Does he, or anyone who used
> to
> work at VM, have knowledge, software source code, assemblers, compilers or
> PROM burner for the legacy system? Maybe they lurk on the list and could
> help with modifying the software to get my pressure display to work
> properly? Just a thought, if I had the tools and software I'd be willing
> to
> support this thing for anybody who has one. Thanks.
>
> Dean Psiropoulos
> RV-6A N197DM
> 2.5 years of fun so far
>
>
>
Message 2
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Subject: | Re: VM1000 sensor question |
Dean,
My pressure sender is already gone....
Ralph
----- Original Message -----
From: "DEAN PSIROPOULOS" <dean.psiropoulos@verizon.net>
Sent: Friday, April 29, 2011 11:51 PM
Subject: AeroElectric-List: VM1000 sensor question
> <dean.psiropoulos@verizon.net>
>
>
> Is there anyone who knows the ins and outs of the VM1000 B&W engine
> monitor
> system. When I originally bought mine 10 years ago I ordered it for a
> carbureted engine. The engine I finally installed has fuel injection
> which
> has higher fuel pressure than a carb engine.
>
> The VM1000 display shows fuel pressure pegged and flashing at 10 PSI. I
> thought that the only thing that might be required to fix this was a
> software change but a friend suggested I might need a new sensor with a
> higher range as well. Would anybody know about this, did VM use two
> different fuel pressure sensors? What brand and model number of sensor
> were
> they? My sensor is a fancy 4 wire unit with a Hirschman connector.
>
> Since VM has been absorbed by JPI my unit is no longer supported (only the
> VM1000C units are still supported) and talking with JPI at Sun N Fun
> confirmed my suspicions that they bought VM to remove one of their
> competitors from the market. That being the case, I obviously can't get a
> software update for the DPU but I might be able to recalibrate the unit to
> get some useful information by putting a resistor in parallel with the
> sensor to have the 0-10 PSI on the display correspond to 0-30 PSI at the
> sensor.
>
> Anyone know the guy who invented the VM1000? Does he, or anyone who used
> to
> work at VM, have knowledge, software source code, assemblers, compilers or
> PROM burner for the legacy system? Maybe they lurk on the list and could
> help with modifying the software to get my pressure display to work
> properly? Just a thought, if I had the tools and software I'd be willing
> to
> support this thing for anybody who has one. Thanks.
>
> Dean Psiropoulos
> RV-6A N197DM
> 2.5 years of fun so far
>
>
>
Message 3
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Subject: | Re: VM1000 sensor question |
Your man is Lance Turk who started Vision Micro Systems.
http://www.jpitech.com/press_releases/Lance_Turk_PR.pdf. He was employed
by JPI for supporting the VM line of products when he sold the company
to them. I guess it didn't last. I contacted Lance at JPI approx. 2
years ago when an oil pressure transducer began to read 10 psi lower
than actual. I found that JPI would sell me a new one but was asking
$450 (my recollection) for the Honeywell device. I was able to find the
same part at Digikey for around $200 but in minimums of 5. I bought a
single unit from Newark for the bargain price of $300 (Yikes!).
I had the same situation when I purchased a fuel injected engine. The
fix was to purchase a different transducer- fortunately from VM as they
were still in business. I can attempt to read the part number on my
transducer to help you in your search. I have the VM 800 with the
individual gauges which precedes the 1000 and may use a different
transducer. There's a battery in the CPU that maintains the clock and
tach time. When it eventually fails, the CPU has to be sent for a
component replacement that contains the battery. There is no simple
battery replacement according to Lance. Mine has been going 8 years and
likely on its last legs. What to do when it goes? When I purchased the
system I asked Lance what recourse would owners have if the company
folded. He assured me that the proprietary info would be released to
those who required it to maintain their systems. Sounds like JPI owns
the information now. Welcome to the digital age. Good luck!
Larry Ford
Glasair I RG N149LF
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