Alemite 8424 서비스 매뉴얼 - 페이지 6

{카테고리_이름} Alemite 8424에 대한 서비스 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Alemite 8424 9 페이지. Flow meter

페이지 인쇄

SER 8424

8. LONG RESET KEY KEYING - 8424

is informed that the calibration

procedure is finished. Before doing this, make sure the

DISPLAYED factor is the ACTUAL factor.

calculates the new USER K FACTOR.

This calculation could require a few seconds,

depending on the correction to be made. During this

operation the arrow disappears but the CAL indication

remains. If this operation is performed after operation

(5), without changing the indicated value, the USER K

FACTOR would be the same as the FACTORY K

FACTOR, thus it is ignored.

9. NO OPERATION - At the end of the

calculation, the new USER K

FACTOR is shown for a few seconds,

after which the restart cycle is repeated to finally

achieve standby condition. ATTENTION: From now

on, the indicated factor will become the calibration

factor used by the meter and will continue to remain

such even after a battery change.

10.NO OPERATION - 8424 stores the

new calibration factor and is ready for

dispensing, applying the newly defined

USER K FACTOR.

Direct Modification of K Factor

This procedure is especially useful to correct a "mean

error" obtainable on the basis of several performed

dispensing operations. If normal 8424 operation shows a

mean percentage error, this can be corrected by applying

to the currently used calibration factor a correction of the

same percentage. In this case, the percentage correction of

the USER K FACTOR must be calculated by the operator

in the following way:

New K Factor = Old K Factor *

Example:

Error percentage found E% - 0.9%

CURRENT calibration factor 1,000

New USER K FACTOR 1,000 * [(100 – ( - 0,9))/100]=

1,000 * [(100 + 0,9)/100] = 1.009

If the meter indicates less than the real dispensed value

(negative error) the new calibration factor must be higher

than the old one as shown in the example. The opposite

applies if the meter shows more than the real dispensed

value (positive error).

Revision (1-11)

Operation

8424

(

)

1 0 0 - E%

100

1. NONE - 8424 in STAND BY: not in

counting mode.

2. LONG CAL KEY KEYING - 8424

enters calibration mode, shows "CAL"

and displays the calibration factor being

used instead of the partial. The words

"Fact" and "USER" indicate which of the two factors

(factory or user) is currently being used.

3. LONG RESET KEY KEYING - 8424

shows "CAL" and the partial at zero.

8424 is ready to perform on-site

calibration by dispensing.

4. LONG RESET KEY KEYING - We

now go on to Direct change of the

calibration factor: the word "Direct"

appears together with the Currently Used calibration

factor. In the bottom left part of the display, an arrow

appears (upwards or downwards) defining the

direction (increase or decrease) of change of the

displayed value when subsequent operations 5 or 6 are

performed.

5. SHORT RESET KEY KEYING - Arrow

direction changes. The operation can be

repeated to alternate the direction of the

arrow.

6. 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

speed increase rises by keeping the key pressed. If

the desired value is exceeded, repeat the operations

from point (5).

7. LONG RESET KEY KEYING - 8424 is

informed that the calibration procedure is

finished. Before performing this

operation, make sure the indicated value is that

required.

8. NO OPERATION - At the end of the

calculation, the new USER K FACTOR is

shown for a few seconds, after which the

restart cycle is repeated to finally achieve standby

condition. ATTENTION: From now on, the indicated

factor will become the calibration factor used by the

meter and will continue to remain such even after a

battery change.

Flow Meter

Alemite, LLC