Yokogawa SC25F - Manual (Page 11)

IM 12B6J1-41E-E
11
FM
Certificate no.
: 3046277
IS, CL I Div. 1, GP A, B, C, D T3…T6
Electrical data : For sensor input circuits (by connector), connected to a
FM approved intrinsically safe apparatus meeting the entity
parameters of the SENCOM™ sensor:
Ui = 6.1 V; Ii = 230 mA; Pi = 1.2 W; Li = 4 µH; Ci = 30 µF
or
FM approved intrinsically safe Yokogawa transmitter Model
FLXA21 series.
Ambient temperature: T6 for Tamb. -40 °C to +60 °C
T5 for Tamb. -40 °C to +75 °C
T4 for Tamb. -40 °C to +85 °C
T3 for Tamb. -40 °C to +85 °C
Note: Intrinsically safe when connected as per Control Drawing FF1-K1224QT (see Fig 3)
Control Drawing FM
The SC25F SENCOM TM sensor shall be
installed to a FM approved intrinsically safe
apparatus meeting the entity parameters
of the sensor as shown in the table as
maximum values, or to a FM certified
intrinsically safe Yokogawa transmitter
Model FLXA21 series.
When installing this equipment, follow the
manufacturer’s control drawing. Installation
should be in accordance with ANSI/ISA
RP 12.06.01 “Installation of Intrinsically
Safe Systems for Hazardous (Classified)
Locations” and the National Electrical Code
(ANSI/NFPA 70).
To prevent ignition of
flammable or or combustible
atmospheres, disconnect
power before servicing or
read, understand and adhere
to the manufacturer’s live
maintenance procedures.
81 82 83 84 85 86 87
+ - G
Classified
location
Transmitter
Sensor
Ui 6.1 V
Ii 230 mA
Pi 1.2 W
Li 4 µH
Ci 30 µF
Input parameter
WU11 cable
terminals 82-84,
86-87.
Maximum cable
length: 100 m.
Cable diameter:
5.8mm
IS, CL I Div.1, GP A, B, C, D T3/T4/T5/T6
Ta 85 ºC/85 ºC/75 ºC/60 ºC
SC25F - -
120 120mm
225 225 mm
AGP25 General purpose
ALP25 High temp.
chemical resistant
Fig 3: FF1-K1224QT Control drawing FM