CAUTION
Hot surfaces resulting from hot process media
Risk of burns resulting from surface temperatures above 65 °C (149 °F).
● Take appropriate protective measures, for example contact protection.
● Make sure that protective measures do not cause the maximum permissible ambient
temperature to be exceeded. Refer to the information in Technical data (Page 63).
CAUTION
External stresses and loads
Damage to device by severe external stresses and loads (e.g. thermal expansion or pipe
tension). Process media can be released.
● Prevent severe external stresses and loads from acting on the device.
Note
Material compatibility
Siemens can provide you with support concerning selection of sensor components wetted by
process media. However, you are responsible for the selection of components. Siemens
accepts no liability for faults or failures resulting from incompatible materials.
WARNING
Use in wrong environment
Risk of explosion in hazardous areas.
● Use the device only in an area with at least a pollution degree 2 according to IEC 60664-1.
WARNING
Using safety extra-low voltage for devices of the protection type "db", "ec", "time" or "time"
Risk of explosion in hazardous areas.
● Isolate the non-intrinsically safe circuit safely from ground, e.g.: through a SELV circuit.
Installing/mounting
4.1 Basic safety instructions
SITRANS P320/P420 with 4 to 20 mA/HART
Compact Operating Instructions, 09/2018, A5E38874562-AB 23
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