INTL 3:770/1 3:770/3   
   REPLYADDR dave@davehigton.me.uk   
   REPLYTO 3:770/3.0 UUCP   
   MSGID: <868ed1475b.DaveMeUK@BeagleBoard-xM> 8be1eb15   
   REPLY:  11c511a2   
   PID: SoupGate-Win32 v1.05   
   In message    
             The Natural Philosopher  wrote:   
      
   > On 26/03/2024 18:16, Ahem A Rivet's Shot wrote:   
   > > On Tue, 26 Mar 2024 17:33:50 +0000 Jim H  wrote:   
   > >   
   > > > Assuming the "oil" you're talking about is kerosene/heating fuel, the   
   > > > speed of sound is 1330 m/sec so 0.5cm takes 3.76 micro-sec.   
   > >   
   > > 	I would have thought it's measuring the distance to the surface of   
   > > the oil from above the oil so it would be the speed of sound in air that   
   > > matters 300m/s.   
   > >   
   > Correct, Mrs Shot. Anyway it's died within 30 minutes of going back on   
   > 'short echo'... So its definitely sensitive to that in some way.   
   >   
   > I'll add more debug code tomorrow   
      
   Are you sure the sensor isn't malfunctioning as a result of being in   
   oil vapour?   
      
   David   
      
   --- SoupGate-Win32 v1.05   
    * Origin: Agency HUB, Dunedin - New Zealand | Fido<>Usenet Gateway (3:770/3)   
   SEEN-BY: 10/0 1 15/0 90/1 103/705 105/81 106/201 128/260 129/305 135/225   
   SEEN-BY: 153/757 7715 218/0 1 601 700 840 870 930 220/70 221/1 6 226/17   
   SEEN-BY: 226/30 100 227/114 229/110 111 112 113 200 206 307 317 400   
   SEEN-BY: 229/426 428 470 550 616 664 700 240/1120 266/512 267/800   
   SEEN-BY: 282/1038 291/111 292/854 301/1 113 812 310/31 320/219 322/757   
   SEEN-BY: 335/364 341/66 342/200 396/45 460/58 633/280 712/848 770/1   
   SEEN-BY: 770/3 100 330 340 772/210 220 230 5020/400 1042 5058/104   
   SEEN-BY: 5075/35   
   PATH: 770/3 1 218/840 221/6 301/1 218/700 229/426