The metallic member provides {HEAD ~ the probe} with a conductive capability for {TAIL ~ capacitive liquid level sensing} 
The metallic member provides { HEAD ~ the probe } with a conductive capability for { TAIL ~ capacitive liquid level sensing }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL