Humidity and immersion can cause intermittent shorting of the signal carriers on epoxy sealed sensors and poorly designed or specified connector/cable assemblies. The intermittent shorting will produce spurious signals that trigger alarms or cause the sensor to fail. In industrial applications, metal to metal and glass to metal hermetically sealed sensors should be used. The connector/cable assembly should be designed to resist liquid intrusion. When using splash-proof or immersion proof connectors, silicone grease should be applied to the contacts to further protect the connection.