Is your client in oil & gas?
I've heard of them, (DPTs), and always in a safety related use. I believe they are diaphram (sp) based and are fairly simple yes/no condition monitoring bits of kit. As far as the autopilot application is concerned I don't know but obv application would be to monitor hydraulic fluids state whilst in autopilot, (eg to disallow control surface commands that fall outside prescibed tolerances).
I'll fanny around on google when I get back from the pub shops.
They are LPG/Petrol specialists, this is at one of their customer's sites - I believe it is monitoring the pressure in a fuel tank in a safety application but I think it's giving an analogue output as opposed to on/off (digital). Here's the pic:
Click to see full-size image. |
The info on the legend plate is (as best I can tell):
Type: K-I
Exhibit No WCE 120
Mfr's Part No: 73148
Series: C
Mfr's Serial No: AF-54-35424
Order No: AF-22858
Stock No: 2262-73148
...and, as posted above, manufactured by Lear Inc circa 1970s. Any help gratefully received.