Metek 920, Operator'S Manual With Essential Health And Safety Requirements

Page: 163 / 278

Controller / User Interface | 4-55
SSR Output Assignment
A SSR output is assigned to a calculated result by assigning its output
number (
0..2 ) to the result.
If a calculated result does not require the use of a Calibration gas mix-
ture, assign SSR output ‘
0 ’ to it.
To assign a SSR output to a calculated result:
1. Determine which SSR output ( 1 or 2 ) controls the solenoid valve for
the gas cylinder containing the Calibration gas mixture used for that
calculated result (component).
2. From CAL mode, assign the SSR output to the calculated result by
pressing:
a.
F5 0 z
“ Sol:R z n ” appears, where ‘ z ’ is the calculated result num-
ber ( 1..6 ) and ‘ n ’ is the assigned SSR output number ( 0..2 ).
If the assignment is correct, continue with Step e.
b.
Del
The display prompts for the new SSR output number.
c.
n
The SSR output number is keyed in.
d.
Ent
The SSR output number is entered and displayed.
e.
Ent
To return to the CAL mode normal display, or
Esc To return to RUN mode normal display, or
Fx To perform another function.
Example 1:
The names for the calculated results are:
Result 1 = SO
2
concentration
Result 2 = NO
2
concentration
Result 3 = NO concentration
There are two calibration gas mixture cylinders, one containing a known
concentration of SO
2
and the other containing a multi-component mixture
of NO
2
and NO where the concentration of the individual components is
unknown.
!
CAUTION