System condition indicator

Details System condition indicator System condition indicator

Category

G - Physics

Subcategory

08

Subsubcategory

B

CPC

340/102

IPC codes

G08B 19/00 (2006.01)

Type

Patent

Patent number

CA 1143814

Description

ABSTRACT A system condition indicator for monitoring a number of interlock switches and fuel valves to detect what event first occurs to shut down a burner control system. The monitoring circuitry is periodically strobed once each cycle of the lower line signal and is only responsive to an abnormal in- terlock switch or fuel valve during the strobe time. The present invention does not respond to an abnormal condition for a predetermined time after burner operation is initiated, to allow the system parameters to go to their operational values. The present invention includes circuitry for monitoring the pilot fuel flow and the main fuel flow and for providing an indication if either flow is abnormally terminated to shut down the furnace system. When the furnace system is shut down in response to an abnormal condition, an in- dication is provided of the first interlock switch or fuel valve to open, al- lowing a determination to be made of what caused the furnace failure, either during start-up or during normal operation.

Application Number

357831

Affiliated with

Also associated with

Rating

System condition indicator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System condition indicator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System condition indicator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-177679