COSA Xentaur Xentaur XDT - Manual (Page 63)

XDT User’s Manual Appendices
56
Appendix N: Certifications - Approvals - Conformity (continued)
HAZARDOUS AREA
SAFE AREA
Shunt-diode Safety Barrier See Note B
1 2
3 4
75
Ω
Coaxial Cable
typically 12-20pF/ft.
Female BNC Connector on Sensor Fitting, Cable must have a Male BNC Connector
. Polarity
back to
T
ransmitter
must be observed.
Grounding
Bus bar
Xentaur XTR-series
Dewpoint
Sensor Element
Revisions
Rev
Description
Date
Approved
T
OLERANCES:
(unless otherwise stated) Decimal
.X = – .030 .XX = – .010 .XXX = – .005
Angular – 1 deg.
Do Not Scale Drawing.
Drawn:
B.B.
Material & Finish: (see Notes)
SIZE A Scale: N/A
84F HORSEBLOCK RD.
Y
aphank, NY
1
1980
Date: 3/5/98
Sheet 1 of 1
Rev 5
Dwg. No. XDT
.00.D.6001
Control Drawing
for Entity Concept
Approved Installation
of Xentaur XTR-series Dewpoint Sensor
connected
to Associated Apparatus,
in Hazardous (Classified) Locations
XENT
A
UR
Cor
poration
IS Class I, Division 1, Group
A,B,C and D;
Class II Group E,F and G,
T6 at 60C and
A
TEX EEx ia IIC
T6
1
updated notes
5/6/98
BB
2
add MTL755ac
1
1/18/98
BB
3
added 9001zen.
6/30/99
BB
4
show sensor only
3/8/01
BB
5
A
TEX markings
1
1/28/04
BB
Associated Apparatus
Intrinsically Safe
Apparatus
Protective Component
Notes f
or installation in Nor
th America:
A.
Intr
insically Saf
e Entity P
ar
ameters:
V
max
= 10.03Vdc
, I
max
= 592mAdc
, C
i = 0.3uF
, L
i = 0mH.
B
. Selected Barr
iers m
ust be galv
anically isolated or dual channel shunt z
ener diode barr
iers with linear outputs
, used channe
l to channel and ha
ving entity par
ameters
such that
V
oc
<
V
max
, I
sc
< I
max
, C
a
> C
i + C
cab
le
, L
a
> L
i + L
cab
le
.
C
. F
or C
cab
le
and L
cab
le
, if the capacitance per f
oot or the inductance per f
oot is not kno
wn, then the f
ollo
wing v
alues shall be used:
C
cab
le
= 60pF/f
oot and L
cab
le
= 0.2uH/f
oot.
D
. Selected Barr
iers m
ust be installed in accordance with the barr
ier man
uf
acturer's control dr
a
wing and Ar
ticle 504 of the Na
tional Electr
ical Code ANSI/NFP
A 70.
E.
The XTR-Ser
ies sensor element does not pro
vide 500V isolation with respect to ear
th.
Notes f
or installation in Eur
ope:
Sensor
:
Xentaur XTR-series Dewpoint Sensor Element
EEx ia IIC
T6 DEMK
O Cer
tificate No
. 05 A
TEX 0505798X
A.
Intr
insically saf
e circuit par
ameters:
U
i :
10.03Vdc
, I
i :
592mAdc
, C
i :
0.3uF
, L
i :
0mH.
B
. Selected Barr
iers m
ust be galv
anically isolated or dual channel shunt z
ener diode barr
iers with linear outputs used channel
to channel and ha
ving entity par
ameters
such that U
o
< U
i, I
o
< I
i, C
o
> C
i + C
cab
le
, L
o
> L
i + L
cab
le
.
C
. F
or C
cab
le
and L
cab
le
, if the capacitance per f
oot or the inductance per f
oot is not kno
wn, then the f
ollo
wing v
alues shall be used:
C
cab
le
= 200pF/meter and L
cab
le
= 0.66uH/meter
.
D
.
The wir
ing of the intr
insically saf
e circuit ma
y be installed in accordance with EN60079-14 or
according to national installation requirements
.
E.
The XTR-Ser
ies sensor element does not pro
vide 500V isolation with respect to ear
th and
the leakage current is higher than 5mA.
The sensor shall be connected to PE ear
th or
installed such that it will satisfy a 500V dielectr
ic with respect to ear
th.
II 1 G