The Model FUK 3/FUL 3/FUM 1 is Optical Temperature

Transmitter for thermocouple or platinum resistance bulb

used for measuring the temperature of different fluids. The

transmission unit incorporates a microprocessor that car-

ries out digital processing of signals for ensuring a high ac-

curacy and an intelligent operation.

A fiber optical cable used for the signal transmission line

forms an optical field instrumentation system together with

an optical star coupler and a master station.

MODEL TYPE CONFIGURATION

1) Thermocouple temperature transmitter (integrated type),

Model type: FUK

2) Resistance bulb temperature transmitter (integrated type),

Model type: FUL

3) Temperature transmitter (separate type), Model type:

FUM

FEATURES

1. Resistive to noise and lightning

Optical signal ensures a reliable signal transmission,

because it is not be affected by external noise and in-

ductive lightning. Use of a nonmetallic optical (fiber) cable

prevents propagation of inductive lightning through the

cable, so a signal transmission immune to lightning can

be realized.

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

system). 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, measuring span:

(1) Integrated type (FUK, FUL)

J thermocouple

E thermocouple

K thermocouple

Resistance bulb Pt100

-200 to +400

°C

-200 to +400

°C

-200 to +400

°C

-200 to +400

°C

50

°C

50

°C

50

°C

50

°C

400

°C

400

°C

400

°C

400

°C

Measuring range

Measuring span

Minimum Maximum

DATA SHEET

OPTICAL TEMPERATURE TRANSMITTER

FFI SYSTEM

(2) Separate type (FUM)

J thermocouple

E thermocouple

K thermocouple

R thermocouple

T thermocouple

Resistance bulb Pt100

-200 to +750

°C

-200 to +800

°C

-200 to +1200

°C

0 to +1600

°C

-200 to +350

°C

-200 to +600

°C

100

°C

100

°C

150

°C

200

°C

50

°C

80

°C

750

°C

800

°C

1200

°C

1600

°C

350

°C

600

°C

Measuring range

Measuring span

Minimum Maximum

Operating pressure:

Flange type ... Rated pressure of flange

Screw-in type ... 4 MPa or less

Output:

Optical digital signal

Burnout:

If sensor is burnt out, last output is held,

and alarm is delivered (detecting unit fail-

ure)

Self-diagnosis:

Displayed on indication unit (option) and

transmitted to master station.

Diagnosis item

Host system Indication unit

Measuring range abnormal

Detecting unit failure

Amplifier abnormal

Battery voltage

Battery voltage low alarm

FUK···3, FUL···3, FUM···1

FUK

FUL

FUM

Date

EDS2-17

May 20, 2004