![1.5Notes on safety conventions and symbols](/images/new-backgrounds/24447/2444711x1.webp)
Safety Instructions | Radar Tank Gauge |
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1.5Notes on safety conventions and symbols
In order to highlight
Safety conventions
| Symbol | Meaning |
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| Warning! | A warning highlights actions or procedures which, if not performed correctly, |
| will lead to personal injury, a safety hazard or destruction of the instrument | |
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| Caution! | Caution highlights actions or procedures which, if not performed correctly, |
| may lead to personal injury or incorrect functioning of the instrument | |
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| Note! | A note highlights actions or procedures which, if not performed correctly, may |
| indirectly affect operation or may lead to an instrument response which is not | |
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| planned |
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Explosion protection |
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| 0 | Device certified for use in explosion hazardous area |
| If the 7532 RTG has this symbol embossed on its name plate it can be | |
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| installed in an explosion hazardous area |
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| - | Explosion hazardous area |
| Symbol used in drawings to indicate explosion hazardous areas. | |
| – Devices located in and wiring entering areas with the designation | |
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| “explosion hazardous areas” must conform with the stated type of |
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| protection |
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| Safe area |
| . | Symbol used in drawings to indicate, if necessary, |
| hazardous areas. | |
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| – Devices located in safe areas still require a certificate if their outputs run |
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| into explosion hazardous areas. |
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Electrical symbols |
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| % | Direct voltage |
| A terminal to which or from which a direct current or voltage may be | |
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| applied or supplied |
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| & | Alternating voltage |
| A terminal to which or from which an alternating | |
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| or voltage may be applied or supplied |
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| ) | Grounded terminal |
| A grounded terminal, which as far as the operator is concerned, is | |
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| already grounded by means of an earth grounding system |
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| * | Protective grounding (earth) terminal |
| A terminal which must be connected to earth ground prior to making | |
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| any other connection to the equipment |
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| + | 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 | |
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| company practice |
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6 | Installation and Operations Manual |