Alemite 8424 Panduan Servis - Halaman 5

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Flow Meter

The word "user"

indicates a

calibration factor set

by the user is being

used.

The flow chart

alongside shows the

switch over logic

from one display

page to another. In

this condition, the

Reset key permits

switching from User

factor to Factory

factor. To confirm the

choice of calibration factor, quickly press CAL while

"User" or "Fact" are displayed. After the restart cycle, the

meter uses the calibration factor that has just been

confirmed.

WARNING

When the Factory Factor is confirmed, the old User

factor is deleted from the memory.

In-field Calibration

This procedure calls for the fluid to be dispensed into a

graduated sample container in real operating conditions

(flow rate, viscosity, etc.) requiring maximum precision.

WARNING

For correct 8424 calibration, it is most important

to:

• completely eliminate air from the system before

calibrating;

• use a Sample Container with a capacity of not

less than 5 liters featuring an accurate graduated

indicator.

• ensure calibration dispensing is done at a con-

stant flow rate equivalent to that of normal use,

until the container is full;

• not reduce the flow rate to reach the graduated

area of the container during the final dispensing

stage (the correct method during the final stages

of sample container filling consists in making

short top-ups at normal operation flow rate);

• after dispensing, wait a few minutes to make sure

any air bubbles are eliminated from the sample

container; only read the Real value at the end of

this stage, during which the level in the container

could drop.

Alemite, LLC

• if necessary, carefully follow the procedure indi-

cated below.

In-field Calibration

Procedure

1. NONE - 8424 In Stand By

2. LONG CAL KEY KEYING - 8424 enters calibration

mode, shows "CAL" and displays the calibration

factor in use instead of total. The

words "Fact" and "USER" indicate

which of the two factors is currently

in use.

3. LONG RESET KEY KEYING -

8424 shows "CAL" and the partial at

zero. K24 is ready to perform on-site

calibration.

4. DISPENSING INTO SAMPLE CONTAINER -

Without pressing any KEY, start dispensing into the

sample container. Dispensing can be interrupted and

started again at will. Continue

dispensing until the level of the fluid

in the sample container has reached

the graduated area. There is no need

to reach a preset quantity.

5. SHORT RESET KEY KEYING -

8424 is informed that the calibration

dispensing operation is finished.

Make sure dispensing is correctly finished before

performing this operation. To calibrate the 8424, the

value indicated by the partial totalizer (example 9.800)

must be forced to the real value marked on the

graduated sample container. In the bottom left part of

the display an arrow appears (upwards and

downwards), THAT SHOWS the direction (increase or

decrease) of the USER K FACTOR value change when

the operations 6 or 7 are performed.

6. SHORT RESET KEY KEYING -

Arrow direction changes. The

operation can be repeated IF

NECESSARY.

7. SHORT/LONG CAL KEY KEYING -

The indicated value changes in the

direction indicated by the arrow - one

unit for every short CAL key keying

continually if the CAL key is kept pressed.

the first 5 units slowly and then quickly).

desired value is exceeded, repeat the operations from

point (6).

SER 8424

(for

If the

Revision (1-11)