APT3500 Smart Pressure Transmitter
Operation Manual M3500-EO1G
62 DUON System Co., Ltd.
6.4.2 Disassembling the Electronics Housing
The transmitter is designed with dual-compartment housing; one contains the electronics module,
and the other contains all wiring terminals and the communication receptacles.
[Figure 6.2 Structure of Housing]
6.4.2.1 Disassembling Electronics Module
Use the following procedure to remove the electronics module.
[Note1]
The electronics are sealed in a moisture-proof plastic enclosure referred to as the electronics
module. The module is a non-repairable unit; if a malfunction occurs the entire unit must be
replaced.
1.
Disconnect the power to the transmitter.
2.
Remove the cover from the electronics side of the transmitter housing (Figure 6.2). Do not
remove the instrument cover in explosive atmospheres when the circuit is alive. Remove
the LCD meter, if applicable.
3.
Remove the two screws that anchor the electronics module to the transmitter housing.
4.
Firmly grasp the electronics module and pull it straight out of the housing, taking care not
to damage the interconnecting pins.
[Note2]
The transmitter EEP-Write Jumpers and failure mode are located on the front of the electronics
module. When it will be replaced for a new one, make a same jumper location.