Baker Hughes Masoneilan 12400 Series, Инструкция по эксплуатации и руководство по безопасности

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® 2017 Baker Hughes, a GE company. All rights reserved. Masoneilan 12400 Series Transmitter/Controller Instruction Manual | 9
2.2.6. ES-749 I
NTRINSICALLY
S
AFE
I
NSTALLATION
W
IRING
R
EQUIREMENTS
Each intrinsically safe cable must include a grounded shield or be run in a separate metal conduit.
3
1
2
4
VOLTAGE SUPPLY
FROM CONTROL SYSTEM
30V MAXI
1 to 5 Volts or 4-20mA
LEVEL FEEDBACK
to Control System
12400 LEVEL TRANSMITTER /
CONTROLER
PRIMARY OUT
4-20mA
SECONDARY OUT
4-20mA
SW1 / SW2
OUT
+
-
+
-
+
-
3
1
2
4
250
Ω
3
1
2
4
VOLTAGE SUPPLY
FROM CONTROL SYSTEM
30V MAXI
VOLTAGE SUPPLY
FROM CONTROL SYSTEM
30V MAXI
DI to CONTROL SYSTEM
OPTIONAL
SOLENOID
LOAD
1 to 5 Volts or 4-20mA
LEVEL FEEDBACK
to Control System
VALVE
POSITIONER
-
+
3
1
2
4
250
Ω
Note 7
Note 4
Note 6
Note 7
Note 7
Note 7
Note 5
Barrier with internal or external sense resistor.
Barrier with 4-20 mA retransmit.
See Note 3
Note 5
Note 6
Barrier with internal or external sense resistor.
See Note 4
Barrier type
See Note 5
Barrier type
See Note 6
4-20 mA SETPOINT
FROM CONTROL SYSTEM
With or
Without local
Solenoid
HAZARDOUS LOCATION
SEE NOTES 1 & 2
NON-HAZARDOUS LOCATION - UNSPECIFIED EXCEPT THAT
BARRIERS MUST NOT BE SUPPLIED FROM NOR CONTAIN
UNDER NORMAL OR ABNORMAL CONDITIONSA SOURCE OF
POTENTIAL WITH RESPECT TO EARTH IN EXCESS OF 250
VOLTS RMS OR 250 VOLTS DC.
The Optional 4-20 mA
secondary output from 12400
must not be connected in an
Intrinsic Safe Installation which
requires FM or CSA approval.
See Note4.