Stamp Company : Stamp Certification Institute :
Signature : Remarks :
Model EXA SC202S-N
No revision to drawing without prior
FM Approval
Title : FM Control Drawing SC202S-N (Non-incendive)
Number : FF1-SC202S-00 Page : 6 of 10
Revision : 2.4
Sensor
terminals 11-16
Max. cablelength: 60 mtr.
Cable dia. : 3 1 2 mm.
Sensor
terminals 11-16
Max. cablelength: 60 mtr.
Cable dia.: 3 12 mm
n classified Location
+
_
G
Classified Location
Unclassified Location
+
_
G
Protective
earth
Intrinsically safe design
FM Class I, Div.2, Group ABCD, T4 for ambient temp. < 55¡C
T6 for ambient temp. < 40¡C
EXA SC202S analyser
+
-
Load
Resistance
Classified Location
Protective
earth
FM Approved
power supply
Voc
¡Ü 31.5 VDC
For electrical data:
see text below.
For electrical data:
see text below.
Intrinsically safe design
FM Class I, Div.2, Group ABCD, T4 for ambient temp. < 55¡C
T6 for ambient temp. < 40¡C
EXA SC202S analyser
+
-
FM Approved
power supply
Voc
¡Ü 31.5 VDC
• Electrical data of the EXA SC202S :
- Supply circuit (terminals + and -): - Sensor input circuit (terminals 11 through 16):
Maximum input voltage V
max
= 31.5 V. Maximum output voltage V
t
= 14.4 V.
Maximum input power Pi = 1.2 W Maximum output current I
t
= 12.8 mA.
Effective internal capacitance Ci = 22 nF Maximum allowed external capacitance C
a
= 1,4 F.
Effective internal inductance Li = 22 H Maximum allowed external inductance L
a
= 900 mH.
• The Hand Held Terminal must be FM Approved in case it is used in the classified location.
When installing this equipment, follow the manufacturers installation drawing. Installation shall be in accordance with Article
501.4(B) of the National Electrical Code (ANSI/NFPA 79).
Nonincendive field wiring may be installed in accordance with Article 501.4(B)(3)
• Grounding shall be in accordance with Article 250 of the National Electrical code
WARNING
- Substitution of components may impair suitability for Division 2
- Do not remove or replace while circuit is live unless area is know to be non-hazardous
- Explosion Hazard — Do not disconnect equipment unless area is know to be non-hazardous
- Do not reset circuit breaker unless power has been removed from the equipment or the area is know to be non-
hazardous
YOKOGAWA EUROPE B.V.
Date : 26/07/2004
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