Emerson World Class 3000 Bedienerhandbuch PDF herunterladen (Seite 15)

Instruction Manual

106-300NFX Rev. 4.2

January 2002

Rosemount Analytical Inc. A Division of Emerson Process Management Description 1-3

World Class 3000

CENELEC approved probes are available in

three length options, giving the user the

flexibility to use an in situ penetration ap-

propriate to the size of the stack or duct.

The options on length are 457 mm (18 in.),

0.91 m (3 ft), and 1.83 m (6 ft). The probe is

certified EExd IIB T1 [370°C (698°F)] to

CENELEC standards EN50014 and

EN50018.

The IFT contains electronics that control

probe temperature (in conjunction with the

optional HPS) and supply power, and pro-

vide isolated outputs that are proportional to

the measured oxygen concentration. The

oxygen sensing cell is maintained at a con-

stant temperature by modulating the duty

cycle of the probe heater. The IFT accepts

millivolt signals generated by the sensing

cell and produces outputs to be used by

remotely connected devices. The IFT output

is isolated and selectable to provide

linearized voltage or current.

The heater power supply CENELEC

approved (HPS) can provide an interface

between the IFT and the probe. The HPS

contains a transformer for supplying proper

voltage to the probe heater. The unit is

certified EExd IIC T6 to CENELEC stan-

dards EN50014 and EN50018.

Systems with multiprobe and multiple IFT

applications may employ an optional MPS

3000 Multiprobe Test Gas Sequencer. The

MPS 3000 provides automatic test gas

sequencing for up to four probes and IFTs

to accommodate automatic calibration. The

MPS 3000 must be installed in a non-

hazardous, explosive-free environment.

d. System Features

1. Unique and patented electronic cell

protection action that automatically

protects sensor cell when the analyzer

detects reducing atmospheres.

2. Output voltage and sensitivity increase

as the oxygen concentration de-

creases.

3. User friendly, menu driven operator

interface with context-sensitive on-line

help.

4. Field replaceable cell.

5. Analyzer constructed of rugged 316

LSS for all wetted parts.

6. The intelligent field transmitter (IFT)

can be located up to 45 m (150 ft) from

the probe when used without optional

heater power supply (HPS). When the

system includes the optional HPS, the

HPS can be located up to 45 m (150 ft)

from the probe and the IFT may be lo-

cated up to 364 m (1200 ft) from the

HPS.

7. All electronic modules are adaptable to

120, 220, and 240 line voltages.

8. Five languages may be selected for

use with the IFT. These are:

English

French

German

Italian

Spanish

9. An operator can set up, calibrate, or

troubleshoot the IFT in one of two

ways:

(a) Optional General User Interface

(GUI). The GUI is housed within

the IFT electronics enclosure and

makes use of an LCD display and

keypad.

(b) Optional LED Display Panel (LDP).

The LED display and a limited

function keypad permit calibration

only.

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