Assembly for sensor cleaning with solenoid

An assembly, comprising:

• an inlet tube;
• a first outlet tube;
• and
• a solenoid assembly having a plunger movable between an open position in which fluid is permitted to flow from the inlet tube to the outlet tube and a closed position in which fluid is inhibited from flowing from the inlet tube to the outlet tube;
• the solenoid assembly having a spring urging the plunger to the closed position, the spring having a plurality of coils;
• and
• the solenoid assembly having four strain gages fixed to four adjacent coils of the plurality of coils of the spring, the four strain gages electrically connected in a Wheatstone bridge arrangement;
• and
• wherein a strain detected by the four strain gages indicates whether the plunger is at the closed position.