Indicator kg/ha for the AGRETO three-point scale with sensor

This larger weighing indicator contains a second line that shows the quantity that is being applied in kg/ha.

Because information is updated continuously, erroneous settings are detected faster.

For tractors that don't have a signal socket, a speed sensor is mounted on a rim or the cardan shaft.

Delivery contents:

• Two-line weighing indicator (as replacement of the standard indicator)
• 1 speed sensor with a 5 m cable
• 1 working position sensor with a 5 m cable
• 5 magnets with mounting screws

Weighing indicator:

• Spraywaterproof plastic casing
• LED-backlit LCD display
• 6-digit main display with 3 cm high digits
• Spread rate displayed on the second line with 2 cm high digits
• Digital installation and calibration
• Battery buffered real-time clock
• 12-24 Volt power supply
• 5 kg resolution for weighing indicator
• 10 kg resolution for spread rate
• Parameters can be set (displacement signal per 100 m, working width, updating interval...)
• Displays driving speed
• Calculates applied quantity per hectare through weight change and completed area
• Processes the working position signal – interrupts area calculation of the headland
• Automatic mode with continuously updated display of quantity per hectare in adjustable time periods
• Manual mode for calculating the quantity applied per hectare in a pre-defined area, with start-stop function and automatically displayed intermediate values

Speed sensor:

• 3-pin inductive sensor
• 5 m connecting cable
• Waterproof screw plug for connection to the weighing indicator

Working position sensor:

• 2-pin Reed sensor
• 5 m connecting cable
• Waterproof screw plug for connection to the weighing indicator

How is the spread rate calculated?

The worked or covered area is deduced from the combination of distance driven and pre-set working width. The scale measures weight loss at regular intervals (for instance, 10 seconds) which is divided over the area. The result is the quantity applied per hectare.

How accurate is the spread rate's display?

The quantity applied per hectare is shown with a 10 kg resolution. Because of relatively low weight loss during an interval and swaying of the scale while driving, a longer distance needs to be covered in practice, until the value has stabilized and become meaningful. This is more problematic for small quantities applied and narrow working widths.

Where is the speed sensor mounted?

Normally 4 magnets are mounted at equal distances on a rim of the front axle. The sensor is mounted in such a way that the magnets pass the tip of the sensor while driving. Mounting the sensor on the cardan shaft is possible as well. In this case 1 magnet is attached to the shaft with a bracket. The amount of impulses per 100 m is set in the weighing indicator.

Can the AGRETO three-point scale be used on a tractor with a sensor and another tractor with a signal socket?

Yes, either a sensor or the connecting cable to the signal socket can be attached to the plug for the driving speed signal.

Where is the working position sensor mounted?

The working position sensor is usually mounted on the device near the volume adjustment. When in closed position (for instance the valve of a fertilizer spreader) the magnet must be in front of the sensor.

What is the working position sensor used for?

Because there is no output in the headland, the area calculation must be stopped. Thanks to the working position sensor the weighing indicator receives information on whether there's output or not (whether the valve is open or not). Without a working position sensor the spread rate calculation would need to be restarted for every track, which would lead to no result on short field lengths.

Any more questions?

Please call us: +43 2846 620