Yokogawa 2-Wire Dual Channel Transmitter/Analyzer FLXA21 - Manual (Page 25)

<1. INTRODUCTION AND GENERAL DESCRIPTION>
1-13
IM 12A01A02-01E 5th Edition : Oct. 31, 2013-00
Control Drawing (CSA type)
Measuring module 1
Measuring module 2
(Refer to Note 7)
Sensor 1
Sensor 2
Housing Assembly
Supply -
Supply +
→ Non Hazardous Location Hazardous Location ←
(*1)
Refer to Note
Safety Barrier
-
+
Intrinsically Safe
Group IIC, Zone 0
Class I, Division 1
Non-incendive
Class I, Division 2,
Groups A, B, C, D
2 wire analyzer
Not use safety barrier but
CSA certified equipment
use in Non-incendive
Note: The measuring module on this
drawing means the sensor module
on this General Specifications.
Electrical parameters (Intrinsically safe)
Housing Assembly
Supply and output circuit (terminals + and -)
Ui(Vmax)=30V, Ii(Imax)=100mA, Pi(Pmax)=0.75W, Ci=13nF, Li=0mH
Measuring module input circuit (CN2 or CN3 on Back board)
Uo(Vt,Voc)=13.65V, Io(It,Isc)=50mA, Po=0.372W, Co(Ca)=80nF, Lo(La)=7.7mH
pH module, SC module and DO module
Ui(Vmax)=13.92V, Ii(Imax)=50mA, Pi(Pmax)=0.374W, Ci=40nF, Li=2.9mH
Sensor input circuit (terminals 11 through 19)
Uo(Vt,Voc)=11.76V, Io(It,Isc)=116.5mA, Po=0.3424W, Co(Ca)=100nF, Lo(La)=1.7mH
ISC module
Ui(Vmax)=13.92V, Ii(Imax)=50mA, Pi(Pmax)=0.374W, Ci=40nF, Li=7.7mH
Sensor input circuit (terminals 11 through 17)
Uo(Vt,Voc)=11.76V, Io(It,Isc)=60.6mA, Po=0.178W, Co(Ca)=100nF, Lo(La)=8mH
Installation requirements between housing assembly and safety barrier
Uo≤Ui Io≤Ii Po≤Pi Co≥Ci+Ccable Lo≥Li+Lcable
Voc≤Vmax Isc≤Imax Ca≥Ci+Ccable La≥Li+Lcable
Uo, Io, Po, Co, Lo, Voc, Isc, Ca and La are parameters of barrier.
Electrical Parameters (Nonincendive)
Housing Assembly
Supply and output circuit (terminals + and -)
Ui(Vmax)=30V, Ci=13nF, Li=0mH
Measuring module input circuit (CN2 or CN3 on Back board)
Uo(Vt,Voc)=13.65V, Io(It,Isc)=50mA, Co(Ca)=80nF, Lo(La)=7.7mH
pH module, SC module and DO module
Ui(Vmax)=13.92V, Ci=40nF, Li=2.9mH
Sensor input circuit (terminals 11 through 19)
Uo(Vt,Voc)=11.76V, Io(It,Isc)=116.5mA, Co(Ca)=4uF, Lo(La)=4.5mH
ISC module
Ui(Vmax)=13.92V, Ci=40nF, Li=7.7mH
Sensor input circuit (terminals 11 through 17)
Uo(Vt,Voc)=11.76V, Io(It,Isc)=60.6mA, Co(Ca)=4uF, Lo(La)=19mH
Note for Intrinsically Safe Installation:
1: In any safety barrier used, the output current must be limited by a resistor “R” such that Io=Uo/R or Isc=Voc/R.
2: The safety barrier must be CSA certified.
3: Input voltage of the safety barrier must be less than 250Vrms/Vdc
4: When using non isolation barrier connect (*1) to IS earthing system.
5: pH and SC Sensor(s) are of a passive type to be regarded as ‘simple apparatus’ same as 06ATEX0218X, 06ATEX0219,
IECEx KEM 06.0052X, FM3028779, 06ATEX0220X, 06ATEX0221, IECEx KEM 06.0053X or the one individually certified with
relevant parameters.
6: ISC Sensor(s) are ISC40S of 00ATEX1067X or the one individually certified with relevant parameters.
7: DO Sensor(s) are of a passive type to be regarded as ‘simple apparatus’ or the one individually certified with relevant
parameters.
8: Measuring module 2 may not mounted. As for ISC module, only one can be mounted.
9: Installation should be in accordance with Canadian Electrical Code Part I and Local Electrical Code.
10: Do not alter drawing without authorization from CSA.
Note for Nonincendive Installation:
1: The parameter for sensor input circuit must be taken into account when installed.
2: Installation should be in accordance with Canadian Electrical Code Part I and Local Electrical Code.
3: Do not alter drawing without authorization from CSA.
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PH
SC
ISC
DO
SENCOM