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26
CTX 300
User manual
CTX 300 calibration for O2
This sensor is an
Oxygen
type.
1
st
case: CTX 300 O2 with display
■
See paragraph
1
st
case: CTX 300 with
display
, on page 22. Proceed only
with adjusting sensitivity (rep. 1) by
injection of test gas.
Figure 20
2
nd
case: CTX 300 O2 without display screen nor LED
■
See paragraph
2
nd
case: CTX 300
without display
on page 24. Proceed
only with adjusting sensitivity (rep. 1)
by injection of test gas.
Signal value mV:
- 1600 mV for full scale, means 30 %
O
2
.
- 1115 mV for 20.9 % O
2
.
- 0 mV for 0% O
2
.
Figure 21
Note: the signal sent from the
CTX300 (toxic or oxygen) sensor to
the control unit
can be measured on
the main circuit by connecting a
millivoltmeter to the pins designed for
this purpose (
- 400 mV corresponds to 4 mA.
- 2000 mV corresponds to 20 mA.
Figure 22
Содержание ctx 300
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