Instruction manual

7232 Radar Tank Gauge
Varec, Inc. 7
Table 2-1: Notes on Safety Conventions and Symbols
Direct voltage
A terminal to which or from which a direct current or voltage may be applied or
supplied
Alternating voltage
A terminal to which or from which an alternating (sine-wave) current or voltage
may be applied or supplied
Grounded terminal
A grounded terminal, which as far as the operator is concerned, is already
grounded by means of an earth grounding system
Protective grounding (earth) terminal
A terminal which must be connected to earth ground prior to making any other
connection to the equipment
Equipotential connection (earth bonding)
A connection made to the plant grounding system which may be of type e.g.
neutral star or equipotential line according to national or company practice
Temperature resistance of the connection cables
States, that the connection cables must be resistant to temperature of at lease
85
° C (185° F)