KROHNE OPTISONIC 7060 EN - Manual (Page 34)

OPTISONIC 7060
Electrical & mechanical installation manual 730962.31.00 page 34 of 52
3.4.7 Operation in hazardous areas to North American Guidelines (CSA)
The system must be installed as shown in Fig. 8.3 to Fig. 8.5 in the appendix. The notes
provided in Fig. 8.3 and Fig. 8.4 must be observed at all times.
Installation in Division 1 / Zone 0 / Zone 1
The following applies to devices installed in this area and that are connected to the
UFC 060 electronics installed in Division 1 / Zone 1:
The maximum device voltage must not exceed 125 V.
You must observe the applicable national regulations, such as:
– In the USA, the device must be installed in accordance with NEC (ANSI/NFPA 70 and
ANSI/ISA RP 12.6.)
– In Canada, the conditions according to CEC part 1 apply.
Exchanging components impairs the intrinsic safety.
In intrinsically safe installations (Entity system), only equipment certified to CSA safety
barriers, or other CSA equipment that fulfills requirements regarding the Entity system,
must be used (Voc ≤ Vmax, Isc ≤ Imax.,
Ca ≥ Ci + Ccable, La ≥ Li + Lcable).
Installation in Division 2 / Zone 2
Installation to CEC or NEC
Important
Danger of explosion: Do not loosen any components without switching the power supply
off beforehand or where it states that the area is potentially explosive.
Exchanging components affects compatibility with Class 1, Division 2.
IMPORTANT