CALL FOR HEAT
Burner is firing, within TDS
Operational Threshold
SAMPLE TIME
Default: 25 seconds
(2 - 60 seconds)
Valve fully opens to
take fresh sample
SETTLE TIME
Default: 25 seconds
(2 - 60 seconds)
Valve fully closes to let
the sample settle
MEASUREMENT TIME
Default: 10 seconds
(2 - 30 seconds)
Valve remains fully closed
whilst TDS sample is taken
MEASURED VALUE LESS
THAN TARGET VALUE
MINUS 100PPM ?
YES NO
BLOWDOWN TIME
Default: 600 seconds
(10 - 1200 seconds)
Valve blows down at
the angle calculated by
the PI loop*
BLOWDOWN TIME
Default: 600 seconds
(10 - 1200 seconds)
Valve remains fully
closed until next TDS
sample cycle
*For continuous TDS control, the valve blows down at angle calculated by the PI loop;
for solenoid or servomotor 2-state TDS control, the P element will determine how long
valve is fully open before closing, in the blowdown time.
4 Top Blowdown
04.09.2016 Mk8 MM Expansion Features Installation and Set-Up Guide Page 79
4.4.3 TDS Timing Diagram
To Next Page
Loading...
Need help?
General
