| ??? 01/24/09 10:50 Modified: 01/24/09 10:53 Read: times |
#161716 - water level sensor for Boiler Chamber |
Hi,
I designed water level sensor using OPAMP as comparator and steel rod. my Controller wotk properly. But when I put sensor in Boiler Chamber. My system behave eratically.Sensor are OPTO ISOLATED. I think coduction is through steam.All EMI/EMC care for PCB design is taken.Sensor Current is arount 750 Micro Amp and Sensor Power supply and Microcontroller Power supply are saparated to keep Isolation.Even there is no track between OPTO DIODE PINS AND OPTO TRANSITOR i.e. 7.5mm isolation is metain bet IN and OutPut Section Pl.ignore my poor Engilsh. Regards satish |
| Topic | Author | Date |
| water level sensor for Boiler Chamber | 01/01/70 00:00 | |
| Ac/DC | 01/01/70 00:00 | |
| AC/DC | 01/01/70 00:00 | |
| DC ????? | 01/01/70 00:00 | |
| One Answer May Be..... | 01/01/70 00:00 | |
...and | 01/01/70 00:00 | |
| Can You Show Us... | 01/01/70 00:00 | |
| Schmatic | 01/01/70 00:00 | |
| How to post schematics | 01/01/70 00:00 | |
| schmatic | 01/01/70 00:00 | |
| schmatic | 01/01/70 00:00 | |
| Posting Schematic again | 01/01/70 00:00 | |
| Probably Redundant... | 01/01/70 00:00 | |
| Cross Postings | 01/01/70 00:00 |