Emerson World Class 3000 Manual de instrucciones descargar pdf (Pagina 60)

Instruction Manual

106-300NFX Rev. 4.2

January 2002

4-2 LDP Operation Rosemount Analytical Inc. A Division of Emerson Process Management

World Class 3000

key. To change the parameter, the increase and

decrease arrows are depressed until the proper

value is displayed. Depress the ENTER key to

accept the new value, or the SEL key to abort

the change. The four displays are as follows:

a. O

The O

selection will display the O

value on

the LED display when ENTER key is de-

pressed.

b. H

The high test gas display allows the value of

the high test gas parameter to be changed

for calibration purposes.

c. L

The low test gas display allows the value of

the low test gas parameter to be changed

for calibration purposes.

d. CAL

The calibration selection allows the operator

to initiate the calibration process when EN-

TER key is depressed.

4-4 LDP DEFAULTS

The LDP equipped IFT is programmed at the

factory with the defaults indicated in Table 4-1.

For a description of the defaults refer to Table

3-4. SETUP Sub-Menu.

4-5 CALIBRATION

a. Overview

The LDP equipped IFT is configured at the

factory for manual (semiautomatic) calibra-

tion. Calibration must be manually initiated.

Information on test gases and hardware re-

quirements may be found in paragraph

3-10, Calibration.

b. Manual Calibration

The following procedures relate to an op-

erator initiated calibration. The calibration is

manually performed by the operator upon

data queues from the IFT. Any system with-

out an MPS 3000 multiprobe test gas se-

quencer must follow these steps.

Consult Safety Data Sheet 1M03296

before performing any work on the

CENELEC approved IFT 3000.

1. Press the SEL key until CAL is shown

on the LED display.

2. Press ENTER. The CAL light is now

on. Turn on high test gas.

3. Press ENTER. The TGH light is now

flashing.

4. When the value shown on the LED

display has stabilized, press ENTER.

Turn off high test gas.

5. Turn on low test gas. Press ENTER.

The TGL light is now flashing.

6. When the value shown on the LED

display has stabilized, press ENTER.

7. Turn off low test gas. Press ENTER.

8. All indicator lights are off. Calibration

complete.

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