Baker Hughes Masoneilan 12400 Series, Instruction Manual & Safety Manual, Page: 27 / 81

® 2017 Baker Hughes, a GE company. All rights reserved. Masoneilan 12400 Series Transmitter/Controller Instruction Manual | 25
7.2. TRANSMITTER CONFIGURATION
Always perform or check instrument configuration before any calibration procedure. Configuration defines 12400 operating
mode, validates various features or sub-menus activation and impacts instrument internal diagnostics.
Check the following key features before initiating any calibration procedure:

Measurement function: LEVEL or INTERFACE.
For special applications, it might be of interest to set the instrument in interface mode even for a level measurement. In this case
low specific gravity is set at 0.

Mounting position of the instrument head versus displacer: LEFT or RIGHT.
An incorrect configuration causes calibration errors that my impact instrument operating and advanced diagnostics capabilities.

Loop current action: DIRECT or REVERSE.
This function both applies on AO_1 and AO_2 (main and second 4-20 mA output signals).

See Appendixes A to G which describe operating and setting menus.
CAUTION:
In case of failsafe signal use ([FAIL LOW] or [FAIL HIGH]), check that loop current variations are in line with process
and safety rules implemented into the Distributed Control System.