Teejet 844-AB Sprayer Control Manual do Utilizador descarregar pdf (Página 9)

98-70007-EN R4

844-AB

Reset to default

If units of measurement changes were made, the console will display

a message asking if programme parameters should be reset to

default before advancing to the next screen. Use the Plus or

Minus keys to select either “Yes” or “No” on the screen. Press the

Programme key to accept the value and advance to the next

programme step.

NOTE: If changes were not made to Units of measurement, this

step will be skipped and the screen will advance to Sensor

selection.

Figure 17: Reset to default

YES

1 2 3 4 5 6 7 8 9 10 11 12

rES

dEF

Sensor selection

The 844-AB can accommodate a ow meter, pressure transducer or

both. Sensor selection instructs the console which sensor is being

used on the sprayer. The default value is “FLO” (ow-based system)

using a ow meter. To maintain this setting, press the Programme

key to advance to Flow meter impulses. To change the setting to

“PRS” (pressure based system), use the Plus or Minus keys

to select “PRS”. Press the Programme key to advance to Flow

meter impulses.

NOTE: Pressure-based regulation is used only with linear nozzles.

For non-linear nozzles, ALWAYS select flow-based

regulation. Most nozzles are linear and may be used with

pressure-based regulation. ConeJet nozzles are non-linear.

If both sensors have been installed on the sprayer, this step will

determine which sensor will be used.

◄If “FLO” is selected, the ow meter will be used to control ow

and the pressure transducer will be used only to display actual

pressure.

◄If “PRS” is selected, the pressure transducer will be used

to control ow and display the actual pressure. Flow meter

signals will be ignored.

The regulation mode determines the following programme steps.

◄If “FLO” is selected, the next Setup mode screen displayed

will be the calibration step for the ow sensor (refer to Flow

meter impulses).

◄If “PRS” is selected, the next Setup mode screen displayed

will be the calibration step for the pressure transducer (ow

sensor calibration will be skipped).

Figure 18: Sensor selection

FLO

1 2 3 4 5 6 7 8 9 10 11 12

Flow meter impulses

During the Flow meter impulses step, the symbol (ow meter

turbine) will ash at the top of the console. The ow meter calibration

number can be entered manually from the factory-calibrated ow

meter pulse rate tag or an Auto calibration procedure can be

activated to determine ow meter impulses based on a known

volume of uid.

Figure 19: Flow meter impulses

650

1 2 3 4 5 6 7 8 9 10 11 12

Manual entry

Locate the factory-calibrated ow meter pulse rate tag on the ow

meter. If this varies from the default value (it usually does) of the

console, use the Plus or Minus keys to modify the value.

In some cases, larger ow meters with small calibration numbers

will include decimals for greater accuracy. To add a decimal to the

calibration number, press the Auto/man key.

Automatic calibration

To complete an automatic calibration of the ow meter, press the

Plus and Minus keys simultaneously. This will clear the

existing value and initiate the calibration procedure. “CAL” will be

displayed in the screen. This indicates that the controller is ready to

begin the calibration process.

Figure 20: Calibration procedure

CAL

1 2 3 4 5 6 7 8 9 10 11 12

Engage the sprayer pump. Turn the boom sections “On” and begin

spraying a known volume of uid (e.g. 400 litres). As the known

amount is sprayed, the console will count the impulses. After the

known volume has been sprayed, turn the Master switch “Off” to stop

counting impulses.

Figure 21: Calibration procedure

CAL

1 2 3 4 5 6 7 8 9 10 11 12

2777

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 23 24

Comentários a estes Manuais

Sem comentários

Teejet 844-AB Sprayer Control Manual do Utilizador Página 9

Comentários a estes Manuais

Manuais e produtos relacionados com Computadores Teejet 844-AB Sprayer Control