Reliability; Approvals - Siemens SIWAREX WP321 Operating Instructions Manual

Technical data

12.4 Approvals

Comments
Storage and transport tempera‐
ture
Relative humidity
Air pressure during operation
Air pressure during transport and
storage
12.3

Reliability

Mean Time Between Failure (MTBF)
The MTBF calculation results in the following value:
Table 12-5
Electronic Weighing System
SIWAREX WP321
12.4 Approvals
NOTICE
Safety guidelines for applications in hazardous areas
For applications in hazardous areas, read the safety instructions in the document "Product
Information - Use of SIWAREX Modules in a Zone 2 Hazardous Area
support.industry.siemens.com/cs/ww/en/)".
Note
The current approvals for your device can be found on the nameplate.
120
Ambient conditions
-40 ... +85 °C
5 ... 95 %
IEC 60068-2-13
IEC 60068-2-13
MTBF
→ CE approval
view/102423743/en)
→ UL approval USA
support.industry.siemens.com/cs/ww/de/view/19248974/en)
→ UL approval Canada
support.industry.siemens.com/cs/ww/de/view/89339055/en)
Application areas
No condensation; corresponds
to relative humidity (RH) stress
level 2 to DIN IEC 61131-2
1 080 ... 795 hPa (operation)
(‑1 000 ... +2 000 m above sea
level)
1 080 to 660 hPa (storage)
(‑1 000 to +3 500 m above sea
level)
MTBF in years
1495 years @TA = 40 °C
(https://support.industry.siemens.com/cs/ww/de/
(https://
(https://
Operating Instructions, 08/2019, A5E33715669A-AD
(https://
SIWAREX WP321