EGT Gauge Questions

[Dean]

I received an e-mail from Brian McAuley at Extech He says the EA15 datalogging sampling interval time range is 3 to 255 seconds. But then he also sent the owner's manuals (.doc file, if anyone wants it), and it notes "Measurement Rate - 1 time per 1.5 seconds". I don't know if this means the sampling is actually at 3 second intervals per TCs, but the samplings are at a staggered time, so I sent him another e-mail to find out.


The rate on the Tenma sounds very good.


:-Dean

 

[salvageV6]

Fluke NetDak is what we use at work.

Works on 12 volts too.

100's of samples per sec.

Many inputs.

RS232 capable.

About $2.4K.

Hope to get one when we close down the place. Then tend to scrap stuff like that...

 

[Dean]

DIBS!! Keep me posted on the salvage operations there!

:-Dean

 

[Scott231]

Originally posted by WSLN 6
Hey Scott231, I was reading up on the Tenma meter, and it reads 2.5 times per second. This should be sufficient right?
http://66.155.20.27/prodinfo/specs/92F5410.PDF

All depends on what you are looking for. The 2.5/sec is a READ rate, not a datalogging output rate...Matter of fact - the unit you are looking at doesn't even have datalogging. Accordingly, this meter does not meet my desired requirements.

I also noted that Tenma has the 72-6700 with (apparently) external datalogging, but it is a single input. Again, this meter does not meet my desired requirements.

 

[Scott231]

Dean (and other interested parties) -

I spoke with Brian at Extech again this morning. The 3 second datalogging rate is correct when recording using the meter's internal memory.

IF you are recording via a connection to a PC, then the meter does record at 1-second intervals but, personally, I do not want two laptops in the car.

The 422130 you noted is still available ("they just forgot to put it in the new catalog"-Brian). This model doesn't have a large-number backlit display, but does have 1-second internal memory datalogging speeds. It too has dual input. As such, I believe I will have to pass on the EA-15 and move to the 422130. Unless of course I can find the Fluke 54 used

 

[Scott231]

BTW, the Extech EA-15 and the 422130 are available at www.electrical-contractor.net for $217.50 including shipping.

The Fluke 54 can be purchased for $254.15 via Idaho Instruments.

 

[JeffG]

Has anyone ran a Percey's gauge? They carry them at Jegs, etc. Here's the description:

"Our indicator has features other's don't: Exposed junction thermocouple…for instant response. A HOLD button for recording measurements, and a MAX button which records the maximum temperature reached during a given time. Our indicator has the ability to monitor TWO cylinders at once allowing observation of front/rear or right/left banks of the engine. It also supplies a DIFFERENTIAL reading, allowing you to match separate cylinders perfectly."

They are about $250 with one probe. Extra probes are 60 bucks. I run a Digitech that works great, but not multi-input feature.

 

[Scott231]

Originally posted by JeffG
Has anyone ran a Percey's gauge? They carry them at Jegs, etc. Here's the description:
<snip>
They are about $250 with one probe. Extra probes are 60 bucks. I run a Digitech that works great, but not multi-input feature.

have you read anything we've been posting?

 

[JeffG]

Scott,
Did someone mention the Percey gauge already? His original question was:

- All of the EGT installations I have seen have seen have been with one probe in the #2 exhaust tube. Other than convenience, why #2? Is it reasonable to expect #2, or any # for that matter, to be representative of all six cylinders? Or is it that you just pick one and keep track of that one?

I know Dean was a bit blown away by the $500+ price tag of the 6 probe unit. I was just throughing in another option. Did I miss something. If so, so about being redundent or off topic?

 

[Scott231]

We were generally talking about meters that are $100 a piece for dual input (the one you suggesteed from Jeg's is $250 and single input). Probes are $39 from everyone's favortire TR alcohol/EGT guy - Steve Chlupsa (and you're suggesting he use a $60 probe?) Now we are onto datalogging, dual input meter response rates (same guy that started the thread).

Thanks for the suggestion, but I have NEVER met a turbo buick guy that is willing to pay more for less. Prolly never will either.

Turbo Buick owners - we want our cake and want to eat it too...as long as it is the BEST cake and the BEST price and it'll shave four tenths off our ETs for under $50.

 

[lyonsd]

What's the purpose of monitoring the EGT? How do you interpret the data?

It appears to let you know if you are running rich or lean. But can't you tell that from a Scanmaster or TurboLink?

 

[azgn]

egt is a much more accurate tool to use than our stock 02 sensors for monitoring a/f ratio....coupled with some way to monitor knock, you can do some pretty accurate tuning not possible with the 02...the best of all worlds would add a wideband 02

several chips (MaxEffort for one) do not use the 02 sensor for inputs thus saving the cost of constant replacement when running leaded fuel

 

[b4black]

Most scan tools have too slow update rate (it's not the tool's fault, it's the ALDL output they are connected to.) Some, like DirectScan, do bypass the ALDL.

 

[azgn]

Direct Scan will not improve what the stock 02 sensor is telling us.....it is not used by the stock ecm at wot and becomes very inaccurate the farther you get from an ideal a/f and the hotter it gets....a wideband will solve that problem

 

[Scott231]

Fluke equipment

OK, after posting the above (about getting the Extech 422130), I thought about spending the extra $37 to get the Fluke 54 since it has ALL the bells and whistles. A quick review of the website made it appear that the data from this meter could only be downloaded with their propietary software. "No way", I thought and e-mailed Fluke support. Here is the return e-mail I received:

From: "Fluke-Info (Everett)" <Fluke-Info@fluke.com>
To: 'Scott Simpson' <Scott231@Juno.com>
Date: Tue, 27 Aug 2002 09:44:40 -0700
Subject: RE: Contact us - REroduct question

Scott,

FlukeView software is required to download from the Fluke 53-II or 54-II. The model number for the software and interface cable is FVF-SC1.

Regards,
Steve Clark
Fluke Corporation

And another quick check shows that the required software is $150 F-that.

 

[Dean]

Originally posted by Scott231
...as long as it is the BEST cake and the BEST price and it'll shave four tenths off our ETs for under $50.

yeah, THAT'S the one I want!


:-Dean

 

[Roger]

I like the SPA for it's peak recall, available in dual boost & egt.

http://www.syclone.freeserve.co.uk/spagauges.htm

A little pricey but doesn' have a recording output.