Agreto B300-V4-K354 User manual

© AGRETO electronics GmbH
Manual
AGRETO Hydraulic Scale
Indicator B300-V4-K354
8.5.2017

AGRETO Hydraulic Scale
© AGRETO electronics GmbH page:2
Content
1Introduction .................................................................................................. 3
2Scope of Delivery ......................................................................................... 3
3Intended Use................................................................................................ 3
4Security ........................................................................................................ 4
4.1 Safety Instructions for the buyer .....................................................................................4
4.2 Safety instructions for the operator .................................................................................4
4.3 Personal Protective Equipment.......................................................................................5
4.4 Residual Hazards............................................................................................................5
5Technical Specifications .............................................................................. 6
5.1 Pressure Sensor..............................................................................................................6
5.2 Weighing Indicator ..........................................................................................................6
5.3 Cabling ...........................................................................................................................6
6Installation .................................................................................................... 7
6.1 Installation of the Pressure Sensor..................................................................................7
6.2 Installation of the Weighing Indicator ..............................................................................8
7Settings of the Weighing Indicator............................................................... 9
8Calibrate the Weighing Indicator................................................................ 10
9Working with the Hydraulic Scale .............................................................. 12
9.1 Switching on the Weighing Indicator.............................................................................12
9.2 Zeroing..........................................................................................................................12
9.3 Standard weighing procedure ......................................................................................12
9.4 Weighing with TARE-function........................................................................................12
9.5 Weighing with Sum-function .........................................................................................13
9.6 Switching off the Weighing Indicator.............................................................................13
9.7 Error messages.............................................................................................................14
10 Warranty ..................................................................................................... 15
11 Disposal ..................................................................................................... 16
12 Declaration of Conformity .......................................................................... 17
13 Imprint ........................................................................................................ 18

AGRETO Hydraulic Scale
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1Introduction
Thank you that you have chosen an Agreto three-point scale. You have
acquired arobust tool for daily practice.
The Agreto three-point scale may be used solely for internal use as a
checkweigher. A use for the legal transactions is not permitted.
Please read this manual carefully before using the scale in operation.
In this manual, as usual "weight" is used in common parlance, the term for the
mass.
2Scope of Delivery
1 Pressure sensor with 4 m signal cable
1 Weighing display with weighing software, housing and mounting bracket
4m Cable for weighing signal
2m Power supply cable
1 Manual
3Intended Use
The AGRETO hydraulic scale is designed for installation in the lifting hydraulics
of forklift trucks and front loaders with single-acting lift cylinders.
The pressure sensor measures the pressure in the hydraulic circuit, the display
converts this pressure into the weight and displays it.
In order to get meaningful values, the system must be calibrated after fitting
with a known weight.
To perform weighings the instructions in this manual must be followed.
When using the system in front loaders, the position of the load and the lifting
height has a significant influence on the accuracy.
A weighing on the basis of the hydraulic pressure in the rear hydraulics of a
tractor is not possible due to the different leverage and rotational movements of
the lifting rod!

AGRETO Hydraulic Scale
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4Security
4.1 Safety Instructions for the buyer
Important!
Make sure that each person who works for the first time with the
AGRETO Hydraulic Scale, has read and understood this manual.
4.2 Safety instructions for the operator
Danger!
The AGRETO Hydraulic Scale may only be operated by persons
who are familiar with the operation of the device.
Precaution!
Keep the work area clean! Soiled areas contributes to accidents.
Danger!
Risk of injury from tip-over / fall and inattention while working with
the measuring instrument getting on and off the tractor.

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4.3 Personal Protective Equipment
WARNING!
For people who work with the device, the wearing of safety shoes
is required.
4.4 Residual Hazards
Working with the device residual risks may arise for persons and objects that
cannot be prevented by design or technical protection measures.
WARNING!
The AGRETO Hydraulic Scale must not be operated in explosive
areas.

AGRETO Hydraulic Scale
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5Technical Specifications
5.1 Pressure Sensor
Maximum pressure: 250 bar
Overload 120%, breaking load 150%
Accuracy: +/- 0,1%
Working temperatur: -20 to +65 ° C
Temperature compensation: -10 bis +50 °C
Hydraulic connection: M14 x1,5 inner angle 37°
5.2 Weighing Indicator
6-digit LCD display mit 20mm digit height, LED-illuminated
Power supply 12 bis 24 VDC
Working temperature: -10 to +50 Grad Celsius
Real time watch
Tare by pressing a button (zero position of the empty device)
Sum function (also possible via external switch)
Erschütterungsfest und spritzwassergeschützt
Vibration damped display for reading while driving
5.3 Cabling
5m specially coated weighing signal cable
Waterproof screw connector (IP68)
2m power supply cable for the weighing indicator

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6Installation
6.1 Installation of the Pressure Sensor
Find a suitable place between the controller and cylinder in the pressure
line of your hydraulic system. If any control valves and blocking valves are
used, the pressure sensor must be mounted between these valves and the
cylinders.
Disconnect the hydraulic line at a threaded connection and arrange the
necessary fittings, such as T-piece, socket, etc., these are very individual
and are not supplied with the hydraulic scale.
If no proper separation point is present, you must remove a piece of hose
and let press in a T-piece.
Mount the pressure sensor and route the signal cable to the area of the
weighing indicator.

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6.2 Installation of the Weighing Indicator
Place the weighing indicator at a suitable location in the vehicle.
Connect the power cable to positive and negative to the on-board electrics.
The display can be operated from 12 to 24 V.
Connect the plugs of the weighing signal cable.
The weight signal cable has the following pinout:
Front view cable socket front view cable plug
on the scale connection cable
No.:
Description
Function
1
EX -
Power supply -
2
EX +
Power supply +
3
SI -
Signal -
4
SI +
Signal +
5
6
7

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7Settings of the Weighing Indicator
The weighing indicator has several adjustable parameters that affect the
operation of the system.
To use the weighing indicator with the three-point scale AGRETO following
parameters are set differently from the default settings when delivered:
BUILD CABLE: 4 (Load cell connection with 4 wires)
BUILD CAP: 6000 (Capacity of the Scale 6.000 kg)
BUILD RES: 5 (Resolution of the weighing indicator to 5 kg)
OPTION FILTER: 4 (Strong damping of the display)
OPTION MOTION: OFF (ZERO/TARE/SUM always possible)
OPTION Z.RANGE: FULL (Zeroing possible at any load)
SPEC KEY.FN: SHOW.T (Set function key to SUM-function)
SPEC REM.FN: KEY 4 (Remote control Summing key enabled)
SPEC QCK.CAL: ON (enables the quick calibration)
SERIAL TYPE: PRINT (Type of output for remote control)
The default setting for the capacity of the display (= maximum weighing range)
is set to 6000. If you must weigh heavier loads than 6000 kg the parameter
BUILD CAP has to be set accordingly higher (up 999,999) so that the display
during operation does not go on overload.
For operations with larger loads, the division upwards should be adjusted as
otherwise the displayed value is not meaningful.

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8Calibrate the Weighing Indicator
To adjust the conversion of hydraulic pressure to weight for your system the
weighing indicator must be calibrated before first use.
Think of a defined lift height of your front loader, which you can reposition
exactly at any time as precisely as possible and in which you want to display the
weights later. Due to the construction of a front loader weighing can always be
performed correctly only in this defined lift height. For forklift mast with free lift
you must (usually the lower) decide at least for a lifting range.
Think of a defined position of the work tool (shovel, fork ...) which you can reset
at any time as precisely as possible and in which you want to display the
weights later. Due to the construction of a front loader weighing can always be
performed correctly only in this defined tool position. It is advisable to spin up
the tool until it stops, and always to weigh in this position. For forklift masts,
there is no such limitation.
Decide whether you prefer to weigh after a lifting procedure or a lowering
operation. By different pressure conditions in the system by means of friction in
mechanical parts, should always be weighed just by an at least short lifting or
lowering operation in the same direction.
Consider these three facts in any case already at calibration time!