Baby Safemount
Weighing assemblies for containers, silos and tanks
We work with you to optimise your tank weighing system
Immediate advice: +49 (0) 29 61 – 96 56 86
The added value for you
Comprehensive
Optional
Available options
Durable
Compact
High quality
Cost-effective
Simple
Why is the Baby Safemount module the right choice for my plant?
With the benefit of our many years of experience we assist you in selecting the optimum weighing module for your application.
+49 (0) 29 61 – 96 56 86
You are probably familiar with the following situation:
You require reliable inventory measurement for a container, tank or mixer.
You would like to dose formulations or ensure that the material ordered still fits into the container.
The working environment is very harsh (dusty, strong vibrations).
The weighing system must be reliable and maintenance-free and must offer high precision and long-term stability.
The ideal solution:
The compact Baby Safemount weighing assembly is ideal for silos and vessels of between 2,000 kg and 3 t. The Baby Safemount can be easily screwed between support legs or support brackets and the substructure.
The assembly secures the silo in all axes, while allowing a certain amount of expansion if the vessel is heated or there is an increase in the temperature of the material.
Because of the simple mounting the weighing assembly can also be mounted by the silo or plant constructor.
The Baby Safemount is largely resistant to vibration, dust, humidity and corrosion.
Upon request, we will gladly send you a series of information about our products, starting with the access to our data sheets.
How does the Baby Safemount work?
The Baby Safemount weighing assembly is based on a horizontal double shear beam, which is held by three high-tensile bolts.
The module’s integral control system is largely resistant to transverse forces, but allows thermal expansion.
The concept of the Baby Safemount weighing assembly guarantees safe, accurate and economically-priced weighing for vessels, silos and tanks. No drivers or bonds are required (static test reserved).
The double shear beam secured by the high-tensile bolts ensures, that the transverse forces and the thermal expansion are taken up. The upper mounting plate adapts minimally to the support bracket or footplate of the silo. The Baby Safemount weighing modules offer integral installation and transport safety.
In order to carry out cost-effective “level measurement based on weight” we offer, in conjunction with the Baby Safemount assembly, counter bearings or dummies of identical height.
Technical data
Measurement ranges:
1,000 kg, 2,000 kg, 3,500 kg,
5,000 kg, 7,500 kg
Total height:
95 mm
Supply:
5-12 VDC, max. 15 V
Output signal:
2 mV/V
Linearity:
within 0.05%
Hysteresis:
within 0.05%
Reproducibility:
within 0.05%
Overload protection:
150% of the nominal load
Output resistance:
700 Ohm
Working temperature range:
-35°C to +80°C
Compensated Range:
-10°C to +45°C
Insulation resistance:
> 2000 MOhm
Ex approval [optional]:
ATEX Zones 1 and 2, 21 and 22 (Zone 22 without barriers)
We are delighted to offer personal assistance with your planning
Uncomplicated, individual and practice-oriented
Frequently asked questions
What is the difference between a weighing assembly and a load cell?
A load cell is the actual element, which measures the force. Standard load cells consist of a metallic body, which is deformed in a defined manner by the force applied.
The deformation is usually measured by metal DMS affixed to the cell and converted into a voltage signal. For small to medium forces bending or shear beams are usually used.
For larger forces as a rule cylindrical bodies or double-ended shear beams are used. When the load cell is loaded with a defined force, it emits a signal, which is proportional to the force (mV/V).
The weighing assembly´s function is to introduce the force into the load cell in the required direction. In the case of containers, the assembly´s function is to secure the container to the load cell and to prevent tilting.
In this way, the accuracy of the load cell should not be impaired, or should be only very slightly impaired. Some weighing modules have additional integral transport, installation and overload protection.
Irrespective of the accuracy of the load cell, the assembly is of primordial importance for the system accuracy of the weighing process.
On how many load cells may a silo, vessel or container be placed?
What is an anti-lift-off device?
An anti-lift-off device on silos and containers is used, for example, if wind loads or seismic loads have to be taken into account and there is a risk that the silo or the container may tilt over. In the case of wind, for example, in particular when the filling level is low, in relation to the weight of the silo the wind-exposed area is large, and it is then that the risk of tilting is greatest. There are weighing modules with integral anti-lift-off devices and others with separate anti-lift-off devices.
Integral anti-lift-off device:
The anti-lift-off device prevents the silo or container from tilting. The Safemount and Baby-Safemount weighing assemblies, which are used for silo weighing, have integral anti-lift-off devices. The top and bottom mounting plates in the assembly are connected to the load cell by bolt connections. In this way, the assembly compensates a certain expansion (e.g. caused by different thermal coefficients between steel and foundation materials) of the overall structure and also limits the distance that can occur in the case of a lifting silo.
Additional anti-lift-off device:
An additional anti-derail device is frequently used for load cells which do not have integral anti-lift-off devices. In this system, the anti-lift-off device can be attached to the load cell itself or directly to the silo or container. When statically required for the Safemount weighing assembly up to 40 t, additional anti-lift-off device, which are attached directly to the weighing assembly, are available. In this version, two vertical threaded rods are screwed into the bottom mounting plate. Each of these protrudes through a drilled hole in the top mounting plate without touching the plate. The maximum withdrawal distance is limited by a nut above the top plate at 2 – 3 mm and additionally secured by a lock nut.
What are stay rods?
What effects do wind loads have on accuracy of weighing?
Lateral forces, such as wind forces, largely balance out due to the parallel switching of the load cells. When one side of the silo is relieved of load by the wind, the load on the other side increases. The sum of the forces therefore remains the same.
Wind loads are identifiable only in case of strong gusts of wind, when the mean value creation (damping filter) of the measurement amplifier has been greatly reduced.
How far from the load cells may the measurement amplifier be located?
All „modern“ measurement amplifiers have what is known as a „sense“ input. In standard load cells only four conductors are required for measuring. These are two conductors for the supply (5 – 15V) and two conductors for the measurement signal.
If the measurement amplifier is located at a distance of more than 10 m, we recommend two additional conductors for the „sense“ line. The measurement amplifier „measures“ through the sense line how much voltage is dropped in routing and mathematically compensates for the voltage drop.
Where there is sufficient wire cross-section and separate transfer of the shielded connecting cable, distances of up to 200 m are feasible. For greater distances, we recommend the use of an amplifier on site at the silo or a bus connection via the Intelligent Junction Box.
