JUMO 14597 safetyM STB/STW Ex - Safety Temperature Limiter and Safety Temperature Monitor Operating Manual - Manual (Page 10)

1 Brief description
2013-04-01 4
1 Brief description
The device is tested according to ATEX directive 94/9/EG as associated equipment with intrinsically safe output.
It meets the requirements of the following identification markings:
1-sensor variant
2-sensor variant
The device is also certified for use according to DIN EN 50495 and DIN EN 13463-6 as an ignition source monitor as specified
in the ATEX directive.
The compact and freely configurable STB/STW can now also enable early and reliable detection of risks in Ex-areas which
could potentially result in personal injuries, environmental damage, or destruction of the production plants and production ma-
terials.
The primary task of safety temperature limiters is to reliably monitor thermal processes and to switch plants to a safe operating
status in the event of malfunctions.
Along with the existing approvals according to DIN 14597, SIL3, PL e (Performance Level), GL, the device also has approval
according to ATEX and can therefore also be used in Ex-areas.
The inputs are intrinsically safe [Ex ia] so that relevant probes can be connected directly.
Barriers are no longer required. The device is also certified according to DIN EN 50495 and DIN EN 13463-6 as a monitoring
device for potential ignition sources (iPL 2) as specified in the ATEX directive and can be used to monitor potentially explosive
atmospheres containing gas or dust.
II (1) (2) (3) G (b1) [Ex ia Ga] [e pz] IIC
II (1) (2) (3) D (b1) [Ex ia Da] [p Dc] IIIC
II (1) (1) (2) G (b2) [Ex ia Ga] [e py] IIC
II (1) (1) (2) D (b2) [Ex ia Da] [p Db] IIIC