Emerson Rosemount 2151N Reference Manual page 8

Rosemount 2151N
SECTION 4
Operation
SECTION 5
Maintenance and
Troubleshooting
viii
Overview...................................................................................................
Transmitter Theory of Operation...............................................................
The Sensor Cell........................................................................................
Demodulator.............................................................................................
Oscillator...................................................................................................
Voltage Regulator.....................................................................................
Current Control.........................................................................................
Current Limit.............................................................................................
Reverse Polarity Protection......................................................................
Overview...................................................................................................
Safety Messages......................................................................................
General Considerations............................................................................
Test Terminal............................................................................................
Electronics Assembly Checkout...............................................................
Sensor Module Checkout.........................................................................
Disassembly Procedure............................................................................
Process Flange Removal.............................................................
Electronics Housing Disassembly................................................
Reassembly Procedure............................................................................
Electronics Housing Reassembly................................................
Process Flange Reassembly.......................................................
Post Assembly Tests................................................................................
Reference Manual
00809-0000-4851 Rev AD
December 2023
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