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MEASURING POINTS OF BKS AND OXS
17 - 4
ETC00781(1) Series 100 e 10/2001
Rosemount Analytical
17.1.6 Light Barrier Signal
Measuring point: Plug 9, pin 2
Measuring device: Oscilloscope
Signal: square impulse U = 6 V
SS
(± 0,3 V)
Frequency = 24 Hz (± 0,1 Hz)
Failure: No signal
Possible reasons (IR measurement):
a) Chopper not connected (see chapter 18.1).
b) Chopper inoperative (switch analyzer off and then on again).
c) Light barrier not connected (see chapter 18.1).
d) Broken cable of light barrier or faulty light barrier (exchange
chopper).
e) BKS faulty (exchange BKS).
Possible reasons (oxygen measurement without IR channel):
a) Solder bridge LB 18 not closed.
b) BKS faulty (exchange BKS).
MEASURING POINTS OF BKS