Siemens SIMATIC RF600 Series System Manual page 418

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7.12 SIMATIC RF640T

Ignitions of gas-air or dust-air mixtures

When using the RF640T transponder, check to ensure that the temperature values are

observed in respect of the requirements of the hazardous area of application.

Non-compliance with the permitted temperature ranges while using the transponder can

lead to ignitions of gas-air or dust-air mixtures.

Damage to the surface of the housing

The values specified for the IP x9K test are maximum values and must not be applied

continuously.

Protracted loading of the transponder can lead to damage to the surface of the housing due

to high pressures.

System Manual, 11/2018, J31069-D0171-U001-A21-7618

SIMATIC RF600