XTension Tech Notes

This is nothing more than a simple 'plunger type' switch which is pushed and released by the action of the pressure switch on this common installation. I used just an old switch taken from a computer keyboard.

--This is the ON script for the water pump
-- Here we maintain statistics for the pump and water usage
-- Make sure that we didn't miss an OFF event.

write log "Pump on"
set value of "PtimesOn" to (value of "PtimesOn") + 1

if (status of "thePump") is false then
	set secsOff to time delta of "thePump"
else
	--we missed the last off...
	write log "Missed pump off event, assuming average."
	set value of "PtimesOff" to (value of "PtimesOff") + 1
	set value of "PMissedOff" to (value of "PMissedOff") + 1
	
	--If we're going to fudge for the missed event, we have to
	-- fudge the water totals also.
	set pWater to (value of "PavgOn") / 3
	set value of "PWaterHour" to ((value of "PWaterHour") + pWater)
	set value of "PWaterDay" to ((value of "PWaterDay") + pWater)
	
	set secsOff to value of "PavgOff"
end if

--Now continue with the stats.  Here we're going to need tenths of minutes.
set tenthsOff to secsOff / 6
set value of "PhourOff" to ((value of "PhourOff") + secsOff)
set value of "PdayOff" to ((value of "PdayOff") + tenthsOff)

--ignore averaging at 'initial' conditions
if (value of "PdayOn") ­ 0 then
    set value of "PavgDuty" to (((value of "PdayOn") / (value of "PdayOff")) * 100)
end if

set value of "PavgOff" to (((value of "PdayOff") * 6) / (value of "PtimesOff"))

if (value of "PmaxOff") < secsOff then
	set value of "PmaxOff" to secsOff
end if
if (value of "PminOff") > secsOff then
	set value of "PminOff" to secsOff
end if
--END of the ON script for thePump

--This is the OFF script for thePump
--This script measures the time that the pump was ON
-- and updates some of the usage counters.
-- Make sure that we didn't miss an ON event...

write log "Pump off"
set value of "PtimesOff" to (value of "PtimesOff") + 1

if (status of "thePump") is true then
	set secsOn to time delta of "thePump"
else
	--we missed the last on...assume average
	write log "Missed pump on event"
	set value of "PtimesOn" to (value of "PtimesOn") + 1
	set value of "PMissedOn" to (value of "PMissedOn") + 1
	set secsOn to value of "PavgOn"
end if

set tenthsOn to secsOn / 6
set value of "PhourOn" to ((value of "PhourOn") + secsOn)
set value of "PdayOn" to ((value of "PdayOn") + tenthsOn)

set value of "PavgOn" to (((value of "PdayOn") * 6) / (value of "PtimesOn"))

if (value of "PmaxOn") < secsOn then
	set value of "PmaxOn" to secsOn
end if
if (value of "PminOn") > secsOn then
	set value of "PminOn" to secsOn
end if

--now for the water usage calcs...mine is 3.0 seconds/gallon...
set pWater to secsOn / 3
set value of "PWaterHour" to ((value of "PWaterHour") + pWater)
set value of "PWaterDay" to ((value of "PWaterDay") + pWater)
--END of OFF script for thePump

--this script takes care of rolling over the
--counters for the water pump usage system
-- it should run hourly...

turnoff "PhourOn"
turnoff "PhourOff"
turnoff "PWaterHour"
--end PumpHourly script

-- This script should do all daily tasks.
--  Notice that you might have one single script which runs daily and
--  resets or accumulates certain items in your database.
--  This example shows only elements relating to 'thePump'

-- maintain history for past 3 days of the pump duty cycle
set value of "Pduty3" to value of "Pduty2"
set value of "Pduty2" to value of "Pduty1"
set value of "Pduty1" to value of "PavgDuty"

-- reset some of the daily counters
turnoff "PdayOn"
turnoff "PdayOff"
turnoff "PtimesOn"
turnoff "PtimesOff"

-- maintain the weekly, monthly and yearly totals :
set pDay to value of "PWaterDay" / 10
set value of "PWaterWeek" to ((value of "PWaterWeek") + pDay)
set value of "PWaterMonth" to ((value of "PWaterMonth") + pDay)
set value of "PWaterYear" to ((value of "PWaterYear") + (pDay/100))

-- maintain history of water usage for the past 3 days
set value of "PWater3" to value of "PWater2"
set value of "PWater2" to value of "PWater1"
set value of "PWater1" to value of "PWaterDay"
turnoff "PWaterDay"
--end Daily Tasks

--This script takes care of weekly tasks

turnoff "Weekly Rainfall"
turnoff "PweekOn"
turnoff "PweekOff"
turnoff "PWaterWeek"
--end of Weekly Tasks

--This script handles monthly things

turnoff "Monthly Rainfall"
turnoff "PmonthOn"
turnoff "PmonthOff"
set value of "PWMonth3" to value of "PWMonth2"
set value of "PWMonth2" to value of "PWlastMonth"
set value of "PWlastMonth" to value of "PWaterMonth"
turnoff "PWaterMonth"
write log "Monthly system cleanup"
--end of Monthly Tasks

--  this script should be executed manually each year or on demand
--  are there other things that you want to do yearly? 

turnoff "PWaterYear"