Yokogawa RAKD - Manual (Page 57)

<8. EXPLOSION-PROTECTED TYPE INSTRUMENTS>
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IM 01R01B30-00E-E 5th edition January 01, 2013 -00 All Rights Reserved. Copyright © 2003, Rota Yokogawa
Control Drawings
FM: Limit switches intrinsically safe (1)
Dieses Dokument enthält sicherheitsrelevante Angaben. Es darf nicht ohne Absprache mit dem Normenfachmann geändert werden!
This document contains safety-relevant information. It must not be altered without the authorization of the norm expert!
Confidential according to ISO 16016 Only valid as long as released in EDM or with a valid production documentation! scale: 1:1 date: 2010-jun-03
respons. US.DRL
approved US.DWR
116-0165F
Twinsburg
Control Drawing
NAMUR SENSORS – FM
change notice
150- 1915
norm US.GAP sheet 1 of 8
HAZARDOUS (CLASSIFIED) LOCATION NONHAZARDOUS LOCATION
Class I, Division 1, Groups A, B, C, D
Class II, Division 1, Groups E, F, G
Class III, Division 1
or
Class I, Zone 0, Groups IIC T6 (Ta = 60ºC)
Notes:
1. For installation in a Division 1 hazardous (classified) location, the wiring must be
in accordance with the National Electrical Code, NFPA 70, Article 504. For installation in a Zone 0
hazardous (classified) location, the wiring must be in accordance with the National Electrical Code,
NFPA 70, Article 505. For additional information refer to ISA RP-12.6.
2. The Entity Concept allows interconnection of intrinsically safe and associated
apparatus not specifically examined in combination as a system when the approved values of Voc ( or
Uo) and Isc (or Io) for the associated apparatus are less than or equal to Vmax (or Ui) and Imax (or Ii)
for the intrinsically safe apparatus and the approved values of Ca (or Co) and La (or Lo) for the
associated apparatus are greater than Ci + Ccable, Li + Lcable, respectively for the intrinsically safe
apparatus.
3. Barriers shall not be connected to any device that uses or generates in excess of 250V rms or DC
unless it has been determined that the voltage is adequately isolated from the barrier.
4. Note associated apparatus with only Zone 1 approved connections limits the mounting of the
sensors to Zone 1.
5. ‘a’ in model number indicates option not affecting safety.
6. NAMUR sensors are also nonincendive for Class I, Division 2, Groups A,B,C, and D; Class II, Division 1,
Groups E,F, and G; Class III, Division 1; Class I, Zone 2, Groups IIC, IIB, IIA T5 hazardous (classified)
locations and need not be connected to an associated apparatus when installed in accordance with
Control Drawing 116-0155.
7. The correlation between type of connected circuit, maximum permissible ambient temperature and
temperature class are indicated at the top of each Table.
8. Model number NMB8-SAE16GM27-N1-FE-V1 approved for Class I, Division 1, Groups C and D T4 (Ta
= 85ºC). See Table 12.
9. Warning - Equipment with non-metallic enclosures shall not be installed in a location where the external
conditions are conducive to the build-up of electrostatic charge on such surfaces. The equipment shall
only be cleaned with a damp cloth.
Pepperl+Fuchs, Inc. “NAMUR”
output proximity sensor. See Tables
for entity parameters
Any FM certified associated apparatus
with applicable division and group or
zone and group approval and with entity
parameters:
DIVISIONS ZONES
Voc ≤ Vmax Uo ≤ Ui
Isc ≤ Imax Io ≤ Ii
Ca ≥ Ci+Ccable Co ≥ Ci+Ccable
La ≥ Li+Lcable Lo ≥ Li+Lcable