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LRG 1x-6x - Installation & Operating Manual -
819878-00
Functional safety, safety integrity level (SIL)
In combination with the URS 60/URS 61 safety control unit, LRG 16-60/LRG 16-61/LRG 17-60
conductivity electrodes are suitable for use with safety functions up to SIL 2.
They are each elements of a safety circuit up to a rating of SIL 2 as per EN 61508 in the SPECTORc
onnect system, and
can transmit alarm notifications.
Combining them with accessories produces a type B subsystem. The following information on the techni-
cal and safety characteristics in Fig. 4 are based solely on LRG 1x-6x conductivity electrodes.
Breakdown of safety function failure rates (safety shutoff)
LRG 1x-6x
LRG 1x-6x
Mechanical
LRG 1x-6x
Electronic
CANopen
URS 60,
URS 61
Safety circuit
Fig. 3
The CANopen interface
is a “Black Channel”
be ignored during calculation due to
the low failure rate of < 1FIT.
type, and can
Check the safety function regularly
The functioning of the conductivity electrode must be monitored once a year by triggering the test func-
tion (T1 = 1 year). The test function can be triggered on site via the integrated rotary knob of the terminal
box; see page 52.
Furthermore, it is possible to trigger the test function remotely from URS 60/URS 61 or the external oper-
ating units URB 60 or SPECTOR
control system.