The sensing element can be a disposable element, {TAIL ~ an element} applicable for {HEAD ~ more than one time use}, or a re usable element 
The sensing element can be a disposable element , { TAIL ~ an element } applicable for { HEAD ~ more than one time use } , or a re usable element
OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH