Richard,
This is how I set all up:
Those are results:
Volt Amps.....PSI.........Water delivery cc
1.5.....3.6......40-50..........180
2........5.7.....50-65...........220
2.6.....6.8.....70-90...........280
3........7.5.....80-100.........300
4........8.3.....100-130.......335
4.5.....8.3......120-150.......350
5........9.2......125-160.......370
5.5.....9 ........135-170.......380
6........9 .......140-170........390
7........9 ........140-180.......390
System variables:
Voltage accuracy 0.1V
Amperage accuracy 0.1A
Pressure accuracy (non-calibrated gauge, suspect 10%)
SMPS used ? High power 70Amp/24VDC supply
Water capacity measurement accuracy 10cc
Water loss thry mist expected 1-2%
Nozle used 0.3 ceramic type
Comments:
Over all I am not happy with the test and will perform second test in 3-4 days to confirm all figures. My problem is that during low voltage range 1-2VDC pump was producing non-repetitive results and figures used to ?float? if I repeat the test.
Second problem is that at almost full pressure 6-7VDC there are no increase in pressure instead there is increase in pressure variation!
I will perform more accurate test with repetitive data collection and will do few changes in hydraulics system to double check results. As at this stage this is all I got.