Across
- 6. Ubiquitous networking technology, used by PC's and almost all PLC's
- 7. Continuously variable control signal
- 9. Standard communications protocol originally published by Modicon/Schneider
- 11. Vertical distance a pump can carry liquid
- 12. Common chemical used as a disinfectant
- 13. Main switch
- 14. Spectrum of light used for disinfection
- 16. Magnetic flow meter
- 17. Physical force exerted on the inside of a pipe
- 18. Flashing alarm beacon
- 20. Mechanical device used to control flow
- 21. The 'out' side of a pump
Down
- 1. Well-known European brand of PLC equipment and instrumentation
- 2. Large international pump manufacturer headquartered in Denmark
- 3. Measurement of hot or cold
- 4. Chemical that causes suspended particles to aggregate
- 5. Common metal used in outdoor switchboard enclosures
- 8. Measure of electrical 'pressure'
- 10. Type of level sensor utilising sound outside the upper limit of human hearing
- 15. Copper high-current conductor
- 19. Data acquisition and control system