Pool Systems Automation: Difference between revisions
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Matt Parnell (talk | contribs) |
Matt Parnell (talk | contribs) |
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==== Filter Tank Pressure ==== | ==== Filter Tank Pressure ==== | ||
Four filter tank pressures are monitored by sensors with internal signal conditioning. When fed by a 24 VDC (each sensor is independently fused), a 1 V to 5 V output corresponds with 0 to 100 | Four filter tank pressures are monitored by sensors with internal signal conditioning. When fed by a 24 VDC (each sensor is independently fused), a 1 V to 5 V output corresponds with 0 to 100 psi of pressure. | ||
A value is considered valid if the measured voltage is 1 V or greater (less than 1 V suggests an open circuit or failed sensor). The low and high thresholds are somewhat arbitrary, and based upon observation. A nominal pressure of 10 | A value is considered valid if the measured voltage is 1 V or greater (less than 1 V suggests an open circuit or failed sensor). The low and high thresholds are somewhat arbitrary, and based upon observation. A nominal pressure of 10 psi is assumed (add 8 psi to the limit per PHTA guidelines for a single-gauge backwash threshold). | ||
{| class="wikitable" | {| class="wikitable" | ||
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|- | |- | ||
|Pump Operating | |Pump Operating | ||
|< 8 | |< 8 psi | ||
|Pressure Low | |Pressure Low | ||
|<tt>Flt Tank Pres L</tt> | |<tt>Flt Tank Pres L</tt> | ||
| Line 46: | Line 46: | ||
|- | |- | ||
|Pump Operating | |Pump Operating | ||
|≥ 8 | |≥ 8 psi and < 18 psi | ||
|Pressure OK | |Pressure OK | ||
|None | |None | ||
| Line 52: | Line 52: | ||
|- | |- | ||
|Pump Operating | |Pump Operating | ||
|≥ 18 | |≥ 18 psi | ||
|Pressure High | |Pressure High | ||
|<tt>Flt Tank Pres H</tt> | |<tt>Flt Tank Pres H</tt> | ||
| Line 58: | Line 58: | ||
|} | |} | ||
When in the <b>Pump Startup</b>, <b>Pump Operating</b> or <b>Backwash</b> state, each tank pressure is briefly shown on the LCD in | When in the <b>Pump Startup</b>, <b>Pump Operating</b> or <b>Backwash</b> state, each tank pressure is briefly shown on the LCD in psi. If the value is not valid, <tt>Fault</tt> is shown in place of a pressure value. | ||
==== Water Flow ==== | ==== Water Flow ==== | ||