Siemens Pacemaker UM344-2 Manuale Utente Scaricare il pdf (Pagina 122)

CALIBRATION AND MAINTENANCE UM344-2

September 1995

POSSIBLE CAUSE CORRECTIVE ACTION

Loop Wiring Failure Check for 12 Vdc minimum across SIGNAL +/- terminals in transmitter terminal

compartment.

Check polarity of loop wiring at both power supply and transmitter.

Check that loop resistance is between 250Ω and 1100Ω.

Check for loose or broken loop wiring at power supply terminals, Supply

Barriers (if used), junction boxes, and transmitter terminal compartment.

Check for disconnected or broken Current Sense Resistor.

Check for short between shield and SIGNAL + loop wire.

Check for accumulation of moisture in transmitter terminal compartment.

Check for the proper type and length of loop cable and for electrical

interference between the loop cable and any adjacent cables in a cable tray or

conduit..

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Siemens Pacemaker UM344-2 Manuale Utente Pagina 122