GE Masoneilan 12420 - Advanced Setup Menu Description - Part 1

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APPENDIX C
SCREEN DESCRIPTION FOR ADVANCED SETUP MENU – 1/2
ADVANCED SETUP
Validate by pressing the * to enter the Advanced Setup menu.
FAILSAFE POSITION
DIRECTION
Validate by pressing the * to define the failsafe position direction in case of activation of
Failsafe mode (severe faults).
FAILSAFE POSITION LOW
Define the failsafe position in case of severe faults. The instrument will generate a current
safety signal below 3.6 mA. Fail Low position in mandatory for SIL certified instruments
FAILSAFE POSITION HIGH
Define the failsafe position in case of severe faults. The in strument will generate a current
safety signal above 21 mA. Fail High position is not available for SIL certified instrumen
ts (Fail
Low mandatory)
SAVE
Validate by pressing the * to start the saving procedure of parameters previously entered in
the instrument memory.
CANCEL
Validate by pressing the * to cancel the parameters saving procedure.
VARIABLE SETUP
Validate by pressing the * to enter the sub-menu to set the additional variables.
MA LOW
Validate by pressing the * to adjust the current equivalent to the Low Level position (REF L).
The value, generally 4 mA, must be between 3.8 mA and the high current signal value (MA
HIGH).
MA HIGH
Validate by pressing the * to adjust the current equivalent to the High Level position (REF H).
The value, generally 20 mA, must be between the low current signal value (MA LOW) and 20.5
mA.
ENGINEERING UNIT:%
Validate by pressing the * to enter the sub-menu to define the level variable and select the
desired engineering unit (usually %).
ZERO SHIFT:%
Validate by pressing the * to set the zero of a reduced range. In case of an interface
instrument, when the Specific Gravities of Service [LSG SER] and [HSG SER] are different from
those of Calibration [LSG CAL] and [HSG CAL], zero shift is
automatically set to the value
resulting from formula :
([LSG SER)- [LSG CAL])/ ([HSG SER]-[LSG SER])
Value ranges from -9999.9% to +9999.9%.
REDUCED SPAN: %
Validate by pressing the * to set the span of a reduced range. Value ranges from 0.0% to 99%.
↓ CONTROLLER
Validate by pressing the * to enter the Controller sub-menu and define
if the Controller
function is activated or not.
Note: only the Transmitter function is SIL certified.
CONTROLLER ON
The Controller function is activated
CONTROLLER OFF
The Controller function is not activated
SIGNAL GENERATOR
Validate by pressing the * to enter the sub-menu allowing to generate a loop current to a
defined value independently of true level measurement.
DAMPING
Validate by pressing the * to enter the Damping menu. This is a first order filtering function
which operates on the output current signal.
DAMPING ON
Activate first order Filtering function.
DAMPING OFF
Deactivate first order Filtering function.
DAMPING:s
Validate by pressing the * to set the damping parameter which is a T63 time: time taken for a
63% response to a level step change. Damping time can be set between 0.1 s and 32 s.