Emerson Rosemount 702 - Wiring Switches and Sensors with Liquid Hydrocarbon Detection, Measure- Ment Option Code 61(702 DX61)24; Measurement Option Code

24
Reference Manual
00809-0200-4702, Rev CA
Section 3: Mounting, Wiring Switches, and Sensors:
Models 702DX22 and 702DX61
February 2013
Mounting, Wiring Switches, and Sensors:
Models 702DX22 and 702DX61
3.3.2 Wiring Switches and Sensors with Liquid Hydrocarbon
Detection, Measurement Option Code 61(702DX61)
Figure 3-9. Fuel Sensor Terminal
The Liquid Hydrocarbon Detection configuration is intended for use with the Tyco
®
TraceTek
®
Fast Fuel Sensor, or TraceTek sensing cable.
Figure 3-10. Fuel Sensor Connection
Connecting to the fast fuel sensor and TraceTek sensing cable
The connections to the Fast Fuel Sensor TraceTek sensing cable are made by matching the
appropriately colored wires to the matching colored termination lugs.
 The Emerson Smart Wireless 702 transmitter can support up to 3 Fast Fuel sensors.
These Fast Fuel sensors are connected using TraceTek Modular Leader Cable
(TT-MLC-MC-BLK), optional modular jumper cables (TT-MJC-xx-MC-BLK) and branching
connectors (TT-ZBC-MC-BLK) as suggested in Figure 3-11.
 If more than one Tyco Fast Fuel sensor is attached to a 702 transmitter, the detection of
liquid hydrocarbon by one sensor is sufficient to cause the 702 transmitter to send a
“Leak” message. However, it is not possible for the 702 transmitter to discern which
individual sensor has detected liquid hydrocarbon.