TELEDYNMCS(at)aol.com
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 Posted: Sun Jan 06, 2008 6:41 am Post subject: GRT EIS |
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In a message dated 1/6/2008 2:58:35 AM Eastern Standard Time, europa-list(at)matronics.com writes:
| Quote: | | 1) Any problems I should look out for. Any gotchas? |
Hello Martin,
I've got a GRT EIS with graphical interface mated to my Jab 3300 in N245E. I'm overall very pleased with the performance of the GRT EIS. It does occasionally give false low readings on the tach which sets off the RPM alarm, though. Same thing on the EGT. It occasionally will give false high alarms, even though it shows EGT's well within range. I have yet to figure out why I'm getting the false readings and GRT doesn't seem to know, either. It hasn't happened enough to spend a lot of time chasing it, but it is annoying.
One thing I have noticed is you should check the integrity of the crimps on the fittings opposite the ring end. You might need to recrimp the CHT leads on the opposite end of the rings. I'd solder the fittings on both ends, too. Really, you should solder any and all crimped fittings to prevent inadvertent loading due to corrosion in the future.
I recently replaced four of my GRT CHT sensors with new GRT CHT sensors and a couple of the old ones and all of the new ones had poorly crimped fittings installed. I didn't catch this with the old ones on my initial installation. The fittings opposite the ring end basically came off in my hand with a gentle tug. This causes a high resistance coupling will lead to false readings. I recrimped the red end using a "Sta-Con" tool, then soldered them on both ends. Checking them against a hand-held laser IR temp meter across the range show they now read CHT spot on.
Hope it helps!
Regards,
John Lawton
Whitwell, TN (TN89)
N245E - Flying
Start the year off right. Easy ways to stay in shape in the new year.
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