HBM RTN/M2 Series User manual
Mounting Instructions | Montageanleitung |
Notice de montage | Instrucciones de montaje
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RTN/M2…
RTN/M2LAR, RTN/M2LA,
RTN/M2LBR, RTN/M2LB
Hottinger Brüel & Kjaer GmbH
Im Tiefen See 45
D-64293 Darmstadt
Tel. +49 6151 803-0
Fax +49 6151 803-9100
www.hbm.com
Mat.: 7-2001.1088
DVS: A01867_02_YS0_02 HBM: public
07.2021
EHottinger Baldwin Messtechnik
Subject to modifications.
All product descriptions are for general information only.
They are not to be understood as a guarantee of quality or
durability.
Änderungen vorbehalten.
Alle Angaben beschreiben unsere Produkte in allgemeiner
Form. Sie stellen keine Beschaffenheits- oder Haltbarkeits
garantie dar.
Sous réserve de modifications.
Les caractéristiques indiquées ne décrivent nos produits
que sous une forme générale. Elles n'impliquent aucune
garantie de qualité ou de durabilité.
Reservado el derecho a modificaciones.
Todos los datos describen nuestros productos de manera
general. No representan ninguna garantía de calidad o de
durabilidad.
Mounting Instructions | Montageanleitung |
Notice de montage | Instrucciones de montaje
English Deutsch Français Español
RTN/M2…
RTN/M2LAR, RTN/M2LA,
RTN/M2LBR, RTN/M2LB
2A01867_02_YS0_02 HBM: public RTN/M2…
English
1 Safety instructions 3........................................
2 Markings used 5............................................
2.1 The markings used in this document 5..........................
3 General 6..................................................
4 Mounting preparation 8.....................................
5 Mounting 12.................................................
6 Dimensions 16..............................................
7 Specifications of the RTN/M2L... weighing modules 22.........
Safety instructions
RTN/M2… A01867_02_YS0_02 HBM: public 3
1 Safety instructions
In cases where a breakage would cause injury to persons or damage to equip
ment, the user must take appropriate safety measures (such as fall protection,
overload protection, etc.).
It is essential to comply with the relevant accident prevention regulations. In
particular you should take into account the limit loads quoted in the specifica
tions.
Use in accordance with the regulations
The weighing modules have been designed for weighing applications. Use for
any additional purpose shall be deemed to be not in accordance with the
regulations.
In the interests of safety, the weighing modules should only be operated as
described in the Mounting Instructions. It is also essential to observe the
appropriate legal and safety regulations for the application concerned during
use. The same applies to the use of accessories.
The weighing modules are not safety elements within the meaning of its use as
intended. Proper and safe operation of this weighing module requires proper
transportation, correct storage, assembly and mounting and careful operation
and maintenance.
General dangers due to non‐observance of the safety instructions
The weighing modules correspond to the state of the art and are fail‐safe. The
weighing modules can give rise to residual dangers if they are inappropriately
installed and operated by untrained personnel.
Everyone involved with the installation, commissioning, maintenance or repair
of a weighing module must have read and understood the Mounting
Instructions and in particular the technical safety instructions.
Residual dangers
The scope of supply and performance of the weighing modules covers only a
small area of weighing technology. In addition, equipment planners, installers
and operators should plan, implement and respond to the safety engineering
Safety instructions
4A01867_02_YS0_02 HBM: public RTN/M2…
considerations of weighing technology in such a way as to minimise residual
dangers. Prevailing regulations must be complied with at all times. There must
be reference to the residual dangers connected with weighing technology.
Environmental conditions
In the context of your application, please note that all materials which release
chlorine ions will attack all grades of stainless steel and their welding seams. In
such cases the operator must take appropriate safety measures.
With environmental conditions that cannot be clearly defined, HBM recom
mends to provide the load cells and weighing modules with a protective coating
which matches these conditions (after mounting) in order to prevent the influ
ence of aggressive media. Please take into account the resistance of the cable
material and the mounting parts.
Prohibition of own conversions and modifications
The weighing modules must not be modified from the design or safety
engineering point of view except with our express agreement. Any modification
shall exclude all liability on our part for any damage resulting therefrom.
Qualified personnel
These weighing modules are only to be installed by qualified personnel strictly
in accordance with the specifications and with the safety rules and regulations
which follow. It is also essential to observe the appropriate legal and safety
regulations for the application concerned. The same applies to the use of
accessories.
Qualified personnel means persons entrusted with the installation, fitting,
commissioning and operation of the product who possess the appropriate
qualifications for their function.
Accident prevention
Although the specified brealing load is several times the full scale value, the
relevant accident prevention regulations from the trade associations must be
taken into consideration.
Markings used
RTN/M2… A01867_02_YS0_02 HBM: public 5
2 Markings used
2.1 The markings used in this document
Important instructions for your safety are specifically identified. It is essential to
follow these instructions in order to prevent accidents and damage to property.
Symbol Significance
CAUTION This marking warns of a potentially dangerous
situation in which failure to comply with safety
requirements can result in slight or moderate physical
injury.
Notice This marking draws your attention to a situation in
which failure to comply with safety requirements can
lead to damage to property.
Important
This marking draws your attention to important
information about the product or about handling the
product.
Emphasis
See….
Italics are used to emphasize and highlight text and
references to other chapters and external documents.
General
6A01867_02_YS0_02 HBM: public RTN/M2…
3 General
HBM offers the RTN/M2(L)... weighing module for RTN load cells with max.
capacities of 1 t ... 33 t. The ”L” in the type designation signifies that the mod
ule has been fitted with a stay rod. “A” signifies rubber‐metal bearing, “B”
stands for pendulum bearing.
Product types RTN/M2LA...
Order number Max. capacity
for load cell
Material Version
1-RTN/M2LAR2.2T 1 t ... 2.2 t stainless steel WITH stay rod
1-RTN/M2AR2.2T WITHOUT stay rod
1-RTN/M2LAR4.7T 4.7 t stainless steel WITH stay rod
1-RTN/M2AR4.7T WITHOUT stay rod
1-RTN/M2LAR22T 10 t ... 22 t stainless steel WITH stay rod
1-RTN/M2AR22T WITHOUT stay rod
1-RTN/M2LA33T 33 t galvanized WITH stay rod
1-RTN/M2A33T WITHOUT stay rod
Product types RTN/M2LB...
Order number Max. capacity
for load cell
Material Version
1-RTN/M2LBR4.7T/2 1 t ... 4.7 t stainless steel WITH stay rod
1-RTN/M2BR4.7T/2 WITHOUT stay rod
1-RTN/M2LBR22T 10 t ... 22 t stainless steel WITH stay rod
1-RTN/M2BR22T WITHOUT stay rod
1-RTN/M2LB33T 33 t galvanized WITH stay rod
1-RTN/M2B33T WITHOUT stay rod
General
RTN/M2… A01867_02_YS0_02 HBM: public 7
The weighing modules have been primarily designed for use in tank weighing.
As a rule, the weighing modules are equipped with adjustable limit stops that
limit horizontal movements, for example by wind forces or in mixer operation.
In addition, the modules are provided with a anti‐liftoff device which prevents
the tank from lifting off. However, ensure that the specified data (see chapter 7
on page 22) are not exceeded.
The modules comprise a lower module plate for mounting on the basic
construction (foundations), a load cell dummy with load introduction elements
and the upper module plate for tank mounting. For load introduction into the
load cell, a rubber‐metal bearing (with RTN/M2LA) or a pendulum bearing (with
RTN/M2LB)is used which allows for horizontal shifting of the load applied. The
weighing modules are completely fitted with a load cell dummy that can be
loaded, with a ground cable, and a securing device for transport.
Mounting preparation
8A01867_02_YS0_02 HBM: public RTN/M2…
4 Mounting preparation
CAUTION
The weighing modules are delivered completely assembled, however, without a
load cell. Instead of the load cell, a dummy has been assembled into the
weighing module, which is capable of taking up the specified loads. Before the
weighing module is mounted underneath the tank, vessel or silo, check
whether dummy replacement through the load cell will still be possible even if
the tank is placed on the weighing module. In order to effect the replacement, a
suitable lifting device is necessary that is capable of lifting the tank by at least
10 mm. Pipe connections mounted on the tank or the feed‐in or discharge sys
tems have to be vertically movable or separable.
Notice
If this is not the case, the dummy must be replaced by an appropriate RTN
load cell already before the weighing module is mounted.
General mounting preparations
SEnsure that the assembly/siting areas provided are clean, level and horizon
tally aligned. Any askew positions can be compensated for, depending on
the assembly situation, for example by appropriate wedges and compensa
tion plates (weld in position) or by grinding down the assembly area. How
ever, module plates must not be ground down under any circumstances.
SThe foundations / basic construction and the connection of the
superstructure must be sufficiently rigid in order to avoid deformations (e.g.
deflections) under load.
SIn order to provide for fitting and assembly free from any constraining
forces, the mounting bores on the basic construction and the tank connec
tion must be sufficiently aligned.
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