Campbell Scientific SR50-L CSC Ultrasonic Distance Sensor - Manual (Page 5)

CAUTIONARY NOTES
1. The order in which the connections are made is critical. Always connect Ground
first, followed by +12V and then the remaining SDI-12/Data Bus, Sensor Enable
Line and Shield. When disconnecting the sensor, the reverse order should be
followed.
2.
Before disassembling the transducer assembly, refer to “Assembly/Disassembly
Procedures” on page 24 of the manual.
3.
Damage may occur to the transducer wires if the transducer assembly is not
carefully orientated when fastening to the SR50 housing. The transducer
assembly should be positioned in such a way that the wires are sure to remain
within the inside wall of the housing. This area is within the dark circle shown on
the diagram below. This will keep the wires from getting pinched between the
transducer assembly and SR50 housing.
BRACKET
FILTERED
VENT HOLE