Avt007 From Canada, joined Jul 2000, 2132 posts, RR: 5 Reply 2, posted (6 years 1 week 6 days 2 hours ago) and read 4492 times:
EMBQA is very close, but since this is Anet, I'll nitpick. It is a temperature probe, known as T2 on some GEs. It does indeed measure inlet temp.
ITT stands for interturbine temperature, referring to the temperature between the high pressure and low pressure turbines.
Avt007 From Canada, joined Jul 2000, 2132 posts, RR: 5 Reply 4, posted (6 years 1 week 6 days 1 hour ago) and read 4481 times:
ITT probes are buried in the engine, directly in the hot gas path. You can see the harnesses from outside if the cowls are removed. On the CF34, the T2 probe is only for temperature, it uses a pressure sensor on the FADEC module for pressure. Or alternately, some aircraft may use air data computer static pressure values. I wouldn't be surprised if you're right, and some manufacturers use dual temp/pressure probes.
Ex52tech From United States of America, joined Dec 2006, 559 posts, RR: 1 Reply 5, posted (6 years 1 week 3 days 7 hours ago) and read 4309 times:
Quoting FLY2HMO (Reply 3): IIRC in most engines they sense pressure too, which is then used for to calculate EPR (Engine Pressure Ratio) by comparing pressures with a sensor in the exhaust side of the engine.
Many of the newer aircraft take the Pt2 reading off the nose of the aircraft, or some location other than the inlet of the engine. Less plumbing in the nose cowl, and less plumbing in the pylons. The EPR transducer can be located someplace other than the pylon also.
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