HBK Z6M User manual

Z6/M
ENGLISH DEUTSCH FRANÇAIS
Mounting Instructions
Montageanleitung
Notice de montage

Hottinger Brüel & Kjaer GmbH
Im Tiefen See 45
D-64293 Darmstadt
Tel. [phone]
Fax [phone]
[email protected]
www.hbkworld.com
Mat.: 7-2001.6001
DVS: A01063 06 Y00 01
02.2022
EHottinger Brüel & Kjaer GmbH
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 allge
meiner Form. Sie stellen keine Beschaffenheits- oder
Haltbarkeitsgarantie 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.

Z6/M
ENGLISH DEUTSCH FRANÇAIS
Mounting Instructions

Z6/M
TABLE OF CONTENTS
2
TABLE OF CONTENTS
1 Safety instructions 3................................................
2 Markings used 5....................................................
2.1 The markings used in this document 5.................................
2.2 Symbols on the product 5............................................
3 General 6..........................................................
4 Prior to mounting 7.................................................
5 Mounting 8........................................................
6 Operation 10........................................................
7 Mounting examples 11...............................................
8 Connection 12.......................................................
8.1 Connecting several weighing modules in parallel 13.......................
8.2 Connection using four‐wire circuitry 13..................................
8.3 Cable extensions 13..................................................
9 Dimensions 14......................................................
10 Specifications Z6/M weighing module 15...............................
11 Specifications for the Z6... load cells 16................................

3
Z6/M
SAFETY INSTRUCTIONS
1 SAFETY INSTRUCTIONS
In cases where a breakage would cause injury to persons or damage to equipment, the
user must take appropriate safety measures (such as fall protection, overload protection,
etc.). For safe and trouble‐free operation, weighing modules must not only be correctly
transported, stored, sited and installed but must also be carefully operated and main
tained.
It is essential to comply with the relevant accident prevention regulations. In particular
you should take into account the limit loads quoted in the specifications.
Use in accordance with the regulations
Z6/M... type weighing modules are conceived 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 transducer requires proper transportation, correct
storage, assembly and mounting and careful operation and maintenance.
General dangers due to non‐observance of the safety instructions
The Z6/M... weighing modules correspond to the state of the art and are fail‐safe. The
tank 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 force
transducer 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 considerations of weighing
technology in such a way as to minimize residual dangers. Prevailing regulations must be
complied with at all times. There must be reference to the residual dangers connected
with weighing technology.

Z6/M
SAFETY INSTRUCTIONS
4
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.
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 technical data 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 nominal capacity in the destructive range is several times the full
scale value, the relevant accident prevention regulations from the trade associations
must be taken into consideration.

5
Z6/M
MARKINGS USED
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 in
formation about the product or about handling the
product.
Tip This marking indicates application tips or other
information that is useful to you.
Information This marking draws your attention to information
about the product or about handling the product.
Emphasis
See …
Italics are used to emphasize and highlight text and
identify references to sections, diagrams, or external
documents and files.
2.2 Symbols on the product
CE mark
The CE mark enables the manufacturer to guarantee that the
product complies with the requirements of the relevant EC direc
tives (the declaration of conformity is available at
http://www.hbm.com/HBMdoc
).

Z6/M
GENERAL
6
3 GENERAL
HBK supplies Z6/M... weighing modules for max. capacities from 30 kg to 200 kg and
500 kg. The weighing modules are designed mainly for use in tank weighing applications.
These weighing modules are fitted with lateral stay rods. An integral over‐load stop is
also fitted.
The modules consist of a base plate, the load cell complete with load application
elements, and the cover plate. A pendulum support is used for the load application,
providing compensation for horizontal load shifts (such as may occur as a result of
thermal strain, for example). The weighing modules are pre‐assembled and a grounding
cable is supplied.

7
Z6/M
PRIOR TO MOUNTING
4 PRIOR TO MOUNTING
SCare should be taken to ensure that all surfaces for siting and mounting are clean,
smooth and level. Depending on the mounting conditions, any leveling error can be
compensated for by using suitable wedges and compensation plates (permanently
welded) or by grinding away the mounting surface, for example.
Important
On no account must the module plates be ground.
SThe base or foundation frame must be sufficiently rigid to prevent unacceptable de
formation under load (such as sagging).
SIn order to keep the mounting as free of constraining forces as possible, the fastening
holes on the foundation frame and container joint must be suitably aligned.
SEvery effort should be made to ensure uniform loading on the support points. Care
should be taken to adjust the height on the support points correctly (compensating
shims need to be available). This is especially important in the case of statically unde
fined supports.

Z6/M
MOUNTING
8
5 MOUNTING
SThe module is delivered with lifted cover plate. Prior to mounting, the cover plate has
to be lowered by unscrewing the nut.
SWhen mounting the container it is important to ensure that no sudden heavy loads are
applied to the module, for instance when lowering it onto the supports. Even transient
loads can damage the load cell if they exceed its limit values.
Notice
The factory‐fitted overload stop is designed for handling overloads during normal opera
tion. It is not designed to deal with short, sharp loads imposed during mounting, as these
commonly amount to a multiple of the permissible limit values.
SIn the case of statically undefined supports, non‐uniform loading of the modules oc
curs due to flexibility as the load is taken up or due to inaccuracy in the height adjust
ment. This non‐uniformity should be checked on the individual load cells by applying
an excitation voltage and comparing the output voltages. To prevent overloads, any
large non‐uniformity should be compensated for by inserting shims under the sup
ports that are least loaded.
SWhen tanks are heavy or mounting conditions are unfavorable, the use of mounting
aids such as auxiliary supports or lifting equipment is recommended.
SThe weighing modules must be installed so that they are not exposed to lateral forces
in the initial state. This means the built‐in pendulum support must be aligned as near
to the perpendicular as possible. This is the case when the foundation and tank joint
are horizontal and the fastening holes on the foundation and container joint are suit
ably aligned.
SThe base plate and cover plate should be firmly fastened to the foundation and tank
respectively.
SThe fitted EEK4 grounding cable is used to protect against welding currents that can
damage the electronic parts of the transducers.

9
Z6/M
MOUNTING
Notice
If the load cell is to be replaced, the upper module plate can be lifted by max. 1.5 mm.
Lock the nut in place to hold the upper module plate in this position. Dismounting the tank
itself is not required.
The following tightening moments prescribed for the fastening bolts must be adhered to
when replacing the load cell:
up to 200 kg max. Capacity
Galvanized version: 34 N·m
Stainless steel version: 23 N·m
500 kg max. Capacity
Galvanized version: 76 N·m
Stainless steel version: 45 N·m
The setting of the overload stop must be checked after the replacement load cell has been
installed. Please refer to the specifications for the weighing module: ”Setting range for the
overload stop”.

Z6/M
OPERATION
10
6 OPERATION
SDust, dirt and other foreign bodies must not be allowed to collect in such a way that
movement of the transducer (bellows) is restricted.
SThe gap for the overload stop and lateral stops must also be kept free of
contamination.
SThe play of the overload stop (for details see table ”Specifications for the weighing
module”) should be checked at regular intervals, for instance with a feeler gage, and
be readjusted if necessary.
SThe weighing modules should not be completely relieved of load. This prevents the
load application elements from lifting out.
SLateral displacements which exceed the maximum permissible value and do not act in
the direction of the stay rods should be avoided by aligning the other modules appro
priately, or should be absorbed by other stops or retention devices.
SThe play in the stay rods should be regularly checked and if necessary readjusted.

11
Z6/M
MOUNTING EXAMPLES
7 MOUNTING EXAMPLES
Stay rod
Load introduction
Degree of freedom
120°120°
120°
90°90°
90°90°
Attention:
The represented bearing
arrangements consider
only weighing‐technical cri
teria.
The carrying and stability
must be examined and
guaranteed in each case by
the operator.
Fig. 7.1 Mounting examples for weighing modules with stay rods

Z6/M
CONNECTION
12
8 CONNECTION
The load cells on weighing modules can be connected to:
SCarrier‐frequency measuring amplifiers or
SDC meas. amplifiers suitable for strain‐gage based measurement systems.
The wiring assignment of the load cell is shown in Fig. 8.1.
(white)
(black)
(gray)
Feeding (+)
(green)
(red)
(wire strand)
Feeding (-)
Sense (-)
Sense(+)
(blue)
Sense(+)
Signal (-)
Shield, filler connected with housing,
in the case of type Z6F and Z6G load
cells
Fig. 8.1 Wiring assignment of the load cell (six‐wire circuitry)

13
Z6/M
CONNECTION
Electrical and magnetic fields often induce interference voltages in the measurement
circuit. Therefore:
Suse shielded, low‐capacitance measurement cables only (HBK cables fulfill both con
ditions)
Sdo not route the measurement cables parallel to power lines and control circuits. If
this is not possible, protect the measurement cable with steel conduit for example
Savoid stray fields from transformers, motors and contact switches
8.1 Connecting several weighing modules in parallel
Load cells can be wired in parallel by joining the load cell cable core ends of the same
color. In this case the HBK range offers terminal boxes of the VKK... series. The output
signal is then the average of the individual output signals.
CAUTION
Overloading of an individual load cell cannot then be detected from the output signal.
8.2 Connection using four‐wire circuitry
In the event of connections to amplifiers using four‐wire circuitry, the cores bl (blue) and
gn (green) should be connected together, as should bk (black) and gr (gray). The follow
ing deviations occur in the case of cable of original length (3 m): Sensitivity -0.2 % and
temperature coefficient -0.01 %/10 K.
8.3 Cable extensions
Extension cables must be shielded and of low capacitance. We recommend the use of
HBK cables, which satisfy these requirements.
With cable extensions it is important to ensure that a good connection is provided, with
minimum contact resistance and good insulation.
When using six‐wire circuitry, the effects of resistance changes in the extension cable are
compensated. If you extend the cable using four‐wire circuitry, the sensitivity deviation
can be rectified by adjusting the amplifier. However, temperature effects are only be
compensated when operating with six‐wire circuitry.
Route the load‐cell connection cable so that any condensed water or dampness forming
on the cable can drip off. It must not be able to reach the load cell. In addition ensure that
no dampness can penetrate the open ends of the cable.

Z6/M
DIMENSIONS
14
9 DIMENSIONS
110 100
155
75
14 17.5
17.5 65
190
93.6 ±0.8
15 15
Lifting device
For removing the load cell,
the upper plate can be lifted
by max. 1.5 mm.
Dimensions
(in mm; 1 mm = 0.03937 inches)

15
Z6/M
SPECIFICATIONS
10 SPECIFICATIONS Z6/M WEIGHING MODULE
Typ Z6/M
Maximum capacity kg 30 50 100 200 500
Limit load (of load cell) % of max.
capacity
150
Restoring force, for 1 mm
side offset
% of ap
plied load
6,1
Max. permissible side off
set transverse to the stay
rod axis 1)
mm "1.5
Max. permissible horizon
tal force in the stay rod di
rection
kN 5
Max. permissible lift‐off
force
kN 5
Material galvanized2) or stainless steel
Weight (depending on ver
sion, including load cell)
kg 8 ... 9
Play on overload stop mm v0.36 v0.35 v0.25 v0.45 v0.80
1) With horizontal alignment of upper module plate
2) As per EN 10088-1

Z6/M
SPECIFICATIONS
16
11 SPECIFICATIONS FOR THE Z6... LOAD CELLS
Type Z6FD1 Z6FC3
Accuracy class according to OIML R 60
Max. numbers of load cell verification intervals (nLC)
D1
1000
C3
3000
Max. capacity (Emax)kg 50; 100; 200;
500
50; 100; 200;
500
t 1 1
Minimum load cell verification interval
(vmin)
% of Cn0.0360 0.0090
Nominal sensitivity (Cn)mV/V 2 2
Tolerance on sensitivity for load applica
tion in specified direction
%t+(1;-0.1) "0.05
Temperature effect on sensitivity (TKC)3) % of
Cn/10 K
t"0.0500 t"0.0080
Temperature effect on zero balance (TK0)t"0.0500 t"0.0125
Hysteresis error (dhy)3)
%
t"0.0500 t"0.0170
Non‐linearity (dlin)3) t"0.0500 t"0.0180
Creep (dDR) in 30 min. t"0.0490 t"0.0166
Input resistance (RLC)
Ω
350...480
Output resistance (R0)356 "0.2 356 "0.12
Reference voltage (Uref)
V
5
Nom. (rated) range of excitation voltage
(Bu)
0.5...12
Isolation resistance (Ris)GΩu5
Nominal (rated) temperature range (BT)
°C [°F]
-10...+40 [+14...+104]
Service temperature range (Btu)-30...+70 [-22...+158]
Storage temperature range (Btl)-50...+85 [-58...+185]
Safe load limit (EL)% of
Emax
150
Breaking load (Ed)300
Maximum capacity kg 50 100 200 500
Permissible dynamic load
(vibration bandwidth to DIN 50100)
% of
Emax
100 100 100 100
Nominal (rated) displacement, approx. mm 0.27 0.31 0.39 0.6
Weight, approx. kg 0.5 0.5 0.5 0.5

17
Z6/M
SPECIFICATIONS
Z6FC3Z6FD1Type
Degree of protection according to
EN60529 (IEC529)
IP 68
(severe test conditions: 1 m
water column;100 h)
Material
Measuring body
Bellows
Screwed cable gland
Cable sheath
Stainless steel4)
Stainless steel4)
Stainless steel / Viton®
PVC
3) The values for linearity deviation, relative reversibility error and temperature effect on sensitivity are
typical values. The sum of these values is within the cumulative error limits laid down by OIML R60.
4) As per EN 10088‐1

Z6/M
SPECIFICATIONS
18