BEHA-AMPROBE BM078 Расширенная инструкция онлайн [11/24] 529183

DCA (Models 037 & 033 only)

Inputs are made through the test lead terminals COM/+. Defaults at EF-Detection

function. Press SELECT button momentarily two times to select DCA function.

●Application notes:

The DC



A function is designed especially for HVAC/R flame sensor applications. The

0.1



A resolution is useful for identifying the minute current changes in flame detector

applications. Flame signal current check should indicate steady flame signal of at least



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):