1.high temperature and high pressure 2.Level control, alarm, and fault interlocking VRUQK - 6000/6100 Displacer Level Switches ... VRUQK - 6000/6100 Float Level Switches are applicable for level control, alarm, and cascade failure of open vessel, and high temperature, high ... status, where, as a result, such functions as liquid level control, alarm, and fault interlocking, etc can be realized.2. VRUQK – ...