| 摘要 |
A high pressure electrical conductivity probe (10) suitable for determining the liquid level in a high pressure vessel such as a steam boiler. A metal mounting body (14) has a bore (14.1) therethrough to accommodate a rod member (12.1) without making electrical contact therewith. A cylindrical insulator (18) capable of withstanding high temperatures and pressures has a bore (18.1) therethrough adapted to receive the rod member (12.1) and being mountable on the rod member electrically to insulate the metal mounting body (14) from a head connected to one end of the rod member to form an electrode connector. A sealing gasket ring (20) is provided at either end of the insulator (18) with the insulator being maintained in compression between the head member and the metal mounting body (14). An external terminal (30) on the probe is electrically connected to the electrode connector and electrically insulated from the metal mounting body (14) so that an electrical circuit may be completed by a conductive liquid coming into contact with both the electrode connector and the wall (16) of the pressure vessel to which the mounting body (14) is mounted. |
