SENSOR INTRINSIC SAFETY
(OPTION 2ISB)
When connected through
Intrinsic Safety Barriers, the
Greyline Sensor Model SE3 is
CSA certified for installation
in a hazardous location rated:
Class I, Groups C,D
Class II, Groups E,F,G
Class III
Intrinsic Safety Barriers may
be ordered with the Greyline
instrument and are supplied
mounted in the Greyline
instrument enclosure.
Replacement barrier fuses
(Part No. ISB- 011239) may
be purchased separately. The
Instrument Enclosure
containing the 2ISB Intrinsic
Safety Barriers must be
installed in a non-hazardous
location. The Sensor,
connecting cable and Junction
boxes may be located in the
hazardous rated area.
Intrinsic Safety Barrier Specifications: Certified, rated 9.3V max, 25 ohms min. (Recommended: Stahl
Model 9001/02-093-390-10).
DFM-IV Doppler Flow Meter
Manual Series A.6
Page 28
RCVR
N.O C N.C N.O C N.C N.O C N.C
RELAY 1
RELAY 2
RELAY 3
L N G
AC
RX PU GND TX
RS 232
N.O C N.C N.O C N.C
A
B
RELAY 4
RELAY 5
INPUT
TMTR
SYNC
4 - 20
OPTIONAL
VOLTAGE FREE
DRY CONTACTS
(BY CUSTOMER)
3
3
4
4
1
1
2
2
NOTE:
MUST BE
BARRIER-EQUIPPED UNITS
ARE FACTORY-WIRED WITH
GROUND THROUGH THE
INSTRUMENT CHASSIS.
POWER INPUT GROUND
CONNECTED TO A
GOOD GROUND (<1 Ohm) WITH
A 12 AWG CONDUCTOR
REPLACEMENT FUSE ASSEMBLY
ORDER PART NO. ISB-011239 (160mA)
SENSOR
NON-HAZARDOUS LOCATION
HAZARDOUS LOCATION
CLASS I, GROUPS C,D
CLASS II, GROUPS E,F,G
CLASS III
INTRINSIC SAFETY BARRIER
INTRINSIC SAFETY BARRIER
