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

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Controller / User Interface | 4-37
CAL Mode – F5 Commands
Keystroke Term Definition
F5 • — —
F5 – — —
F5 0 Sol:R
z n
Assigns SSR output ‘
n
’ (where ‘
n
’ = 0..2) controlling a Calibration gas solenoid valve to the
calculated result (R), ‘
z
’, where ‘
z
’ = 1..6. The same SSR output can be assigned to more
than one calculated result. This allows a multi-component Calibration gas to be used. If a
calibration gas is not used with one of the calculated results, ‘
n
’ must be set to ‘ 0 ’.
1 = Sol:R1 4 = Sol:R4
2 = Sol:R2 5 = Sol:R5
3 = Sol:R3 6 = Sol:R6
and where ‘
n
’ = 0..2:
0 = Auto-Zero
1 = Auto-Span1
2 = Auto-Span2
F5 1 Scale z The full-scale range for each of the four outputs , where ‘ z ’ = 1..4. If an output is not used,
its full-scale range should be set to ‘ 0 ’. For example, if Scale 1 = 1000 PPM, Output 1 will
read 20 mA at 1000 PPM and 4 mA at 0 PPM. These outputs are application-specific.
1 = Scale 1
2 = Scale 2
3 = Scale 3
4 = Scale 4
F5 2 FlowCtrl n The analyzer system Sample Flow Control mode, where ‘ n ’ = 0..2, 10..12, 100..102, or
110..112.
These codes apply to sample systems using an Aspirator, where ‘ n ’ = 0..2:
0 = Analyzer Control mode (automatic control by analyzer)
1 = Continuous Backpurge mode (manually set by operator)
2 = Continuous Sample mode (manually set by operator)
10 = Continuous Zero Gas Flow mode (manually set by operator) (probe tip)
11 = Continuous Calibration Gas #1 Flow mode (manually set by operator) (probe tip)
12 = Continuous Calibration Gas #2 Flow mode (manually set by operator) (probe tip)
These codes apply to sample systems using a Sample Block Valve:
100 = Analyzer Control mode (automatic control by analyzer)
101 = Continuous Sample Block-Off mode
102 = Continuous Sample mode
110 = Continuous Zero Gas Flow mode (local)
111 = Continuous Calibration Gas #1 Flow mode (local)
112 = Continuous Calibration Gas #2 Flow mode (local)
F5 3 AdjDisable
z
The Calibration Adjustment Disable function can be set to allow (or prevent) automatic ad-
justment of the analyzer Zero offset transmittances and Span factors for all Zero and Span
operating modes (automatic or manual calibration).
To allow automatic adjustments of the analyzer Zero offset and calibration, set this function
to ‘ 0 ’.
To prevent automatic adjustments of the analyzer Zero offset and calibration, set this func -
tion to ‘ 1 ’.