Sensors Producing Electronic Signals
Sensor #	Comment
PS 1A	raw inlet to regen 1: used to evaluate the pressure differential required by the PMO
PS 1	raw inlet to regen 2: used to evaluate the pressure differential required by the PMO
PS 2	pasterized exit regen 2: used to evaluate the pressure differential required by the PMO
PS 3	pasterized exit regen 1: used to evaluate the pressure differential required by the PMO, used to check "back  pressure" set point
PS 4	inlet to separator
PS 5	skim line: used to control back pressure via valve #39 (throttling valve)
PS 7	inlet to homogenizer: used to control stuffer pump speed to avoid cavitation in homogenizer, used to check   "stuffer pressure" set-point
RTD 1	hold tube outlet temperature (next to DRT), measures legal pasteurization temperature, signal displayed on chart recorder
RTD 2	cooler exit temperature, used to control water flow to cooler
RTD 3	located in hot water line (receiving bay) to heater, used to control steam flow to hot water heater
RTD 4	cream discharge temperature, used to control water flow to cream cooler
RTD 8	measures outlet (skim) temperature, used to control by-pass valve # 36 (throttling valve), signal displayed on chart   recorder
MM 1	measures flow rate to hold tube, used to control amount of HTST1 discharge
MM 2	measures skim milk flow rate, used to control amount of HTST1 discharge
DRT	digital temperature temperature recorder after hold tube, displayed on instrument panel