Anyone out there with extensive time with different EGT gauges? I'm interested in the reaction time of the EGT gauges. I installed a WESTACH 2C2 today and was a bit miffed with the reaction time. Let's say you go full throttle and then let off...the temps in my opinion should change and go lower RIGHT NOW not a minute or so later.

I've a Fluke 52II temp meter that I watch the inlet and outlet temps on the intercooler and that meter/probes change lickity split when you advance the throttle or let off. So....are all EGT gauges slooooooowww?

 

the closer you mount it to the engine (as in manifold not DP) the better.

but I think they are a bit slow.

 

They react way too slow to tell you any useful informtion in a drag race. Perhaps in a road race they might be useful.

 

No, many aircraft turbine engines use EGT (TGT) as a closed-loop control device, which requires a relatively fast data aquisition. Example:
http://212.73.32.211/hosting/gespiell12/fadec.htm

I think the EGT gauge you have is based on a general aviation gauge intended for internal combustion engines operating at a constant rpm. However, I think the gauge should be reacing a little faster than what you have stated. Westach has an email help system that you may want to try out to see what they say.

 

I might call Westach. Then again I might be off base. I'm used to a digital temperature meter. So it might just be analog vs digital. I'm considering buying what I think is a *E* type thermocouple for the Fluke and mounting that somehow. Maybe I shoulda done some research prior to buying a EGT gauge. I bought two senders/probes and I'll try the other one to see if there is difference b/t them.

Located it about four to five inches from the turbo.

Yo, those Pratt and GE use alumel/chromel TIT sensors and they work plenty good fine.

 

An example of what I call FAST, is taking some FREEZEMIST and aiming at the *K* type thermocouple on the Fluke and letting a blast go for a moment. The meter will register a minus thirty whatever in a heartbeat. Not two or three seconds, but a heartbeat.

 

If you want an accurate fast-acting digital EGT display, read this series of articles on building your own.

 

When i purchase a EGT, i will definitely be looking into the aircraft market, rather than the automotive. Time to Break out the Aircraft Spruce catalogue. It'll be a good start.

 

wow, crazy cool site NZ

 

Whoa that site is awesome!

 

There is a lag, but the lag you describe sounds overly lengthy.
Autometer offers three types of probes, and the cheapest one lags pretty bad.  The other two seem to work fine enough.  I use only Japan EGT gauges, and their reaction is fine for my tuning uses.  They typical react within half a second or so.


-Ted

 

I have experience with the T-53 and T-700, and both systems worked fast enough to keep me away from hot starts for many years. Had they taken a minute to react, I would have a paycheck deduction for the next 10,000 years to pay for all the blown engines, lol. I'm not sure what kind of thermocouples they used, but I do know that similar turbine engines use an alumel/chromel type, so that should not be an issue.

BTW, the temps will not lower as fast as they rise. This is due to some radiant heat soak. If you are noticing that it takes a minute for the EGT drop down to ambient, then this is normal. If you are saying that it takes a minute to show any reduction at all, then this is too slow.

Just make sure you get a 12VDC gauge.

 

My GReddy reacts pretty fast, but I dunno If I'd tune on it alone, I'd rather be on a dyno w/ a wideband.

 

I would check to see what the slow part of the system is. Is it the sensor, or the gauge itself? Either one could be set up to react slowly. (Or both.)