Alemite 8424 Manual de serviço - Página 2

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SER 8424

The user can choose between two different operating

modes:

1. Normal Mode: Mode with display of Partial and Total

dispensed quantities.

2. Flow Rate Mode: Mode with display of Flow Rate, as

well as Partial dispensed quantity.

The meter features a non-volatile memory for storing

the dispensing data, even in the event of a complete power

break for long periods. The measurement electronics and

the LCD display are fitted in the top part of the 8424 which

remains isolated from the fluid-bath measurement chamber

and sealed from the outside by means of a cover.

LCD Display

The "LCD" of the METER features two numerical

registers and various indications displayed to the user only

when the applicable function so requires.

1. Partial register (5 digits with moving decimal FROM

0.1 to 99999) indicating the volume dispensed since the

reset button was last pressed;

2. Indication of battery charge;

3. Indication of calibration mode;

4. Totals register (6 digits with moving decimal point

FROM 0.1 to 999999), that can indicate two types of

Total: General Total that cannot be reset (TOTAL)

Resettable total (Reset TOTAL)

5. Indication of total multiplication factor (x10/x100)

6. Indication of type of total, (TOTAL/Reset TOTAL);

7. Indication of unit of measurement of Totals:

8. Indication of Flow Rate mode

9. Indication of unit of measurement of Partial:

User Buttons

The 8424 features two buttons (reset and cal) which

individually perform two main functions and, together,

other secondary functions. The main functions performed

are:

Revision (1-11)

1. For the reset key, resetting the partial register and

resettable total (reset total)

2. For the cal key, entering instrument calibration mode.

Used together, the two keys permit entering

configuration mode, useful for changing the units of

measurements and calibration factor.

Battery Housing

The 8424 is powered by two standard type 1.5 V

batteries (size AAA). The battery housing, easily

accessible, is closed by a metal cover sealed through a

rubber guard acting as a gasket. The whole unit can be

easily removed by unscrewing the 4 screws securing the

cover and the guard to the body.

Installation

8424 features a threaded, inline inlet and outlet (1" gas

or NPT male and female). It has been designed to be easily

installed in any position: fixed in-line or mobile on a

dispensing nozzle. In order to improve the life of the

turbine, it is recommended to fit a strainer before the meter

itself.

WARNING

At the female inlets, tighten the couplings at a

max. torque of 55N/m. At the female inlets, tighten

the couplings at a max. torque of 55N/m.

With The Gas-female Inlets, Do Not Use Conical

Threaded Couplings.

Daily Use

The only operations that need to be done for daily use

are partial and/or resettable total register resetting.

Occasionally the meter may need to be configured or

calibrated. To do so, please refer to the relevant sections.

Below are the two typical normal operation displays.

One display page shows the partial and reset total

registers. The other shows the partial and general total.

Switch over from resettable total to general total display is

automatic and tied to phases and times that are in factory

set and cannot be changed.

Flow Meter

Alemite, LLC