A, mA and A Current
Press SELECT button momentarily to toggle between DC and AC.
Last selection will be saved as power up default for repeat measurement convenience.
Application notes for flame sensors:
DC
A function is useful for HVAC/R flame sensor applications. The 0.1
A resolution
can identify the minute current changes in flame detector applications. Flame signal
current check should indicate steady flame signal of at least 2
A for a rectification
type, or 1.5
A for an ultraviolet type (8
A for self checking systems). If a flame signal
current with inadequate strength or fluctuation beyond 10%, check the following to
avoid the risk of unwanted flame relay dropout :
For gas or oil flames (Minipeeper):
Low supply voltage
Detector location
Defective detector wiring
Dirty viewing windows
Faulty Minipeeper
For oil flames (Photocell):
Detector location & wiring
Smoky flame or poorly adjusted air shutter
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