© 2019 Baker Hughes Company. All rights reserved.
Masoneilan 12400 DLT ATEX Instruction Manual | 11
8. SETUP and START UP
•
These operations must be done in conformance with
EN/IEC 60079-17
and / or national and
local regulations applicable for explosive atmospheres.
•
Before carrying out any work on the device, check the local conditions are free of potentially
explosive atmosphere for safe opening of the covers.
•
The Push Buttons (
rep 260)
can be used for SETUP operations in zones 0, 1 and 2.
•
For using HART communication tools, please be under the requirements defined in
•
During SETUP operations, the 12400 is no longer in NORMAL operation. The analog outputs
signals coming from AO_1, AO_2, DO_1 and DO_2 could be not in accordance with the
process monitoring.
The following coupling, configuration or calibration operations are only necessary when they have
not already been carried out by the manufacturer or by the end user. In all cases, check that the
operations comply with the instrument's intended use.
•
Refer to
ANNEX II
for the pushbutton menu flowchart.
•
Please refer to the 12400 Instruction and Operation Manual
IOM GEA19367
to complete the
following actions.
8.1. Coupling
The coupling operation must be carried out before configuration and calibration. It consists of
correctly positioning the sensor onto the torque tube.
8.2. Configuration
This operation must be carried out before the calibration done and defined the working of the
12400. The main parameters are:
▪
Transmitter type: ............................... level or interface
▪
Mounting: .......................................... left or right
▪
Current action for AO_1 and AO_2: ... direct or reverse
8.3. Calibration
This operation requests to simulate or to change the level of liquid or the interface between
two liquids. The basic operations can be resuming by:
▪
Recording of specific gravities of calibration and service.
▪
ZERO (Low level) and the SPAN (High level) calibration.
8.4. Start up
Before to power up the digital level transmitter and controller type 12400, check that:
▪
The 12400 is in
NORMAL
mode.
▪
The covers are fully screwed
(rep 104, 107, 255 and 280)
and the security cover screws are
well locked
(rep 106, 110 and 257).