Siemens SITRANS DA400 Operating Instructions Manual

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General safety notes2.4 MeasuresSITRANS DA400 with protection against explosion2-2 Operating Instructions, 02/2006, A5E00684661-012.4 MeasuresFor the sake of safety, the following precautions must be observed:Warning"Intrinsically safe" protection type"Intrinsically-safe" devices lose their certification as soon as they are operated on circuitswhich do not correspond with the test certification valid in their country.Protection type "limited energy" nL (zone 2)Devices with "limited energy" may be connected and disconnected while in operation.Protection type "non-sparking" nA (zone 2)Devices with "non-sparking" protection may only be connected and disconnected when offcircuit.CautionElectrostatic Sensitive Devices (ESD)This device contains electrostatic sensitive devices. Electrostatic sensitive devices may bedestroyed by voltages that are undetectable to a human. Voltages of this kind occur as soonas a component or an assembly is touched by a person who is not grounded against staticelectricity. The damage to a module as a result of overvoltage cannot usually be detectedimmediately. It may only become apparent after a long period of operation.2.5 Qualified Personnel"Qualified personnel" means those who are familiar with the installation, mounting,commissioning and operation of the product. They must have the following, appropriatequalifications for their activities:• Training or instruction/authorization in operating and maintaining devices and systemsaccording to the safety regulations for electrical circuits, high pressures and aggressiveas well as hazardous media.• For explosion-proof devices: Training or instruction/authorization in carrying out work onelectrical circuits for hazardous systems.• Training and instruction in maintenance and use of adequate safety equipment accordingto safety regulations.• Should be trained in first aid.