EDS6-126 Datasheet, PDF (1/8 Pages) Fuji Electric – OPTICAL DIFFERENTIAL PRESSURE TRANSMITTER REMOTE SEAL TYPE

FFI SYSTEM
OPTICAL DIFFERENTIAL PRESSURE TRANSMITTER
REMOTE SEAL TYPE
DATA SHEET
''.ʜ
The Model FFM 3 Optical Differential Pressure Transmit-
ter Remote Seal Type measures pressures of various fluids
accurately, converts them into optical digital signals and
outputs them. This is an intelligent transmitter providing
excellent performance and functions due to incorporation
of electrostatic capacitance type silicon sensor and micro-
processor.
A fiber optic cable used for the signal transmission line
forms an optical field instrumentation system together with
an optical star coupler and a master station.
FEATURES
1. Resistive to noise and lightning
Optical signal ensures a reliable signal transmission, be-
cause it is not affected by external noise and inductive
lightning. Use of a nonmetallic optical (fiber) cable pre-
vents propagation of inductive lightning through the cable,
so a signal transmission immune to lightning can be real-
ized.
2. Reliability due to redundant configuration
Host system can be duplicated by using two optical cable
trunk lines (between an optical star coupler and host sys-
tem). This enhances reliability of users’ systems.
3. Intrinsic safety type explosion-proof
Each equipment with a built-in battery can be constructed
so as to be an intrinsic safety type individually (intrinsic
safety type barrier unnecessary).
SPECIFICATIONS
Functional specifications
Fluids measured: Liquid, gas or steam
Measuring range:
Type
FFM˘˘3
FFM˘˘5
FFM˘˘6
Span [kPa]
Minimum Maximum
value
value
0.8
32
3.25
130
12.5
500
Range limit [kPa]
Lower
Upper
range limit range limit
-32
32
-130
130
-500
500
Operating pressure: Up to the maximum value of
operating pressure of flange.
Process temperature, Allowable pressure limit:
Fill-fluid
Fluorolube oil
Silicon oil
Silicon oil
Silicon oil
Silicon oil
Silicon oil
Silicon oil
13th
code
digit
Process
Allowable
temperature pressure limit
W, A, D -20 to 120˚C Atmospheric pressure
H
-15 to 250˚C ^{or higher}
J
ɹ85 to 300˚C
Y, G
S
-40 to 120˚C 2.7 kPa abs or higher
-15 to 250˚C ^{See Fig. 1.}
T
ɹ85 to 300˚C
K
-15 to 200˚C
0.13 kPa abs or higher
See Fig. 2.
For small bores 40A, 50A, 1-1/2B, 2B:
Fill-fluid
Fluorolube oil
Silicon oil
Silicon oil
Silicon oil
13th
code
digit
Process
Allowable
temperature pressure limit
W, A, D -20 to 120˚C Atmospheric pressure
H
0 to 250˚C ^{or higher}
Y, G -40 to 120˚C 2.7 kPa abs or higher
S
0 to 250˚C ^{See Fig. 1.}
Self-diagnosis: Displayed on indication unit (option) and
transmitted to master station.
Item
Host system Indication unit
Measuring range abnormal
˓
˓
Detecting unit failure
˓
˓
Amplifier abnormal
˓
˓
Battery voltage
˓
ʵ
Battery voltage low alarm
˓
˓
Remote control function:
See Table 1.
Output signal: Optical digital signal
Power supply: Built-in lithium battery
(expected life about 4 years)
EDS6-126
Date May 20, 2004