HBM SLB700A/06VA1 User manual

A3253-2.0 en/de/fr

Strain transducer

Dehnungsaufnehmer

Extensomètre

SLB700A/06VA1

SLB700A/06VA2

Montageanleitung

Mounting Instructions

Notice de montage

English Page 3 - 18.................................................

Deutsch Seite 19 - 34...............................................

Français Page 35 - 50...............................................

SLB700A/06VA1, SLB700A/06VA2

A3253-2.0 en/de/fr HBM

Contents Page

English

Safety instructions 4..............................................

1 Scope of delivery 8............................................

2 General application instructions 8..............................

3 Structure and mode of operation 9..............................

3.1 Transducer 9.............................................

3.2 Strain gage and integrated electronics cover protection 9.......

4 Conditions on site 10...........................................

4.1 Ambient temperature 10.....................................

4.2 Moisture and chemical effects 10.............................

4.3 Deposits 11................................................

5 Mechanical installation 12.......................................

5.1 Important precautions during installation 12....................

5.2 General installation guidelines 12.............................

5.3 Installation of the SLB 700A/06VA1 and SLB 700A/06VA2 12.....

6 Electrical connection 14.........................................

6.1 Pin assignment 14..........................................

6.2 Shortening the cable 14.....................................

6.3 Cable extension 14.........................................

6.4 Calibration 15..............................................

6.5 Zero setting 16.............................................

7 Specifications 17...............................................

8 Dimensions 18.................................................

SLB700A/06VA1, SLB700A/06VA2

A3253-2.0 en/de/frHBM

Safety instructions

Proper use

The SLB700A/06VA1 and SLB700A/06VA2 strain transducers are solely de-

signed for measuring static and dynamic strains within the load limits specified

by the technical data for the respective maximum capacities. Any other use is

not the designated use. The strain transducers work with force shunt mea-

surements. It is therefore necessary to screw the strain transducer to the

structure, on which strain is to be measured, in compliance with the specifica-

tions in these mounting instructions. The SLB700VA1 and SLB700VA2 strain

transducers are not suitable for force flow measurements.

To ensure safe operation, the regulations in the mounting and operating in-

structions, together with the following safety rules and regulations, and the

data specified in the technical data sheets, must be complied with. It is also

essential to observe the applicable legal and safety regulations for the ap-

plication concerned, e.g. accident prevention regulations.

The strain transducers are not intended for use as safety components. Please

also refer to the section: ”Additional safety precautions”. Proper and safe op-

eration of the strain transducer requires proper transportation, correct storage,

siting and mounting, and careful operation.

Load limits

The data in the technical data sheet must be complied with when using the

strain transducer. In particular, the respective maximum loads specified must

never be exceeded. The following limits set out in the technical data sheets

must not be exceeded

Limit strains,

Breaking strains,

Permissible dynamic strains,

Temperature limits,

Limits of electrical loading capacity.

Please note that when several strain transducers are interconnected, the

strain distribution is not always uniform.

Use as a machine element

The strain transducers can be used as machine elements. When used in this

manner, it must be noted that, to favor greater sensitivity, the strain transduc-

ers are not designed with the safety factors usual in mechanical engineering.

Please refer here to the section ”Loading limits” and the technical data.

SLB700A/06VA1, SLB700A/06VA2

A3253-2.0 en/de/fr HBM

Additional safety precautions

The strain transducers cannot (as passive transducers) implement any (safe-

ty-relevant) cutoffs. This requires additional components and constructive

measures for which the installer and operator of the plant is responsible.

In cases where a breakage or malfunction of the transducer would cause in-

jury to persons or damage to equipment, the user must take appropriate addi-

tional safety measures that meet at least the requirements of applicable safety

and accident prevention regulations (e.g. automatic emergency shutdown,

overload protection, catch straps or chains, or other fall protection).

The layout of the electronics conditioning the measurement signal should be

such that measurement signal failure does not cause damage.

General dangers of failing to follow the safety instructions

The strain transducers are state-of-the-art and reliable. T ransducers can

give rise to residual dangers if they are incorrectly operated or inappropriately

mounted, installed and operated by untrained personnel. Every person in-

volved with siting, starting-up, operating or repairing a strain transducer must

have read and understood the mounting instructions and in particular the

technical safety instructions. The strain transducers can be damaged or de-

stroyed by non-designated use of the strain transducer or by non-compliance

with the mounting and operating instructions, these safety instructions or any

other applicable safety regulations (BG safety and accident prevention regula-

tions) when using the strain transducers. The strain transducers can break

apart, especially when overloaded. A strain transducer breakage could injure

persons in the vicinity of the strain transducer or cause damage to equipment.

If strain transducers are not used according to their designated use, or if the

safety instructions or specifications in the mounting and operating instructions

are ignored, it is also possible that the strain transducer may fail or malfunc-

tion, with the result that persons or property may be affected (due to the loads

acting on or being monitored by the strain transducer).

The scope of supply and performance of the transducer covers only a small

area of measurement technology, as measurements with (resistive) strain

gage sensors presuppose the use of electronic signal processing. In addition,

equipment planners, installers and operators should plan, implement and re-

spond to safety engineering considerations in such a way as to minimize re-

maining dangers.

The markings used in this document

The marking below warns of a potentially dangerous situation in which failure

to comply with safety requirements can result in death or serious physical in-

jury.

SLB700A/06VA1, SLB700A/06VA2

A3253-2.0 en/de/frHBM

WARNING

Description of a potentially dangerous situation

Measures to avoid/prevent the danger

The marking below warns of a situation in which failure to comply with safety

requirements could lead to damage to property.

NOTE

Description of a situation that could lead to damage to property

The marking below draws your attention to important information about the

product or about handling the product.

Important

Important information

The marking below contains application tips or other information that is useful

to you.

Tip

Information/Application instructions

Conversions and modifications

The transducer must not be modified from the design or safety engineering

point of view except with our express agreement. Any modification shall ex-

clude all liability on our part for any damage resulting therefrom.

Maintenance

The SLB‐700A/06VA1 and SLB‐700A/06VA2 strain transducers are mainte-

nance-free.

SLB700A/06VA1, SLB700A/06VA2

A3253-2.0 en/de/fr HBM

Disposal

In accordance with national and local environmental protection and material

recovery and recycling regulations, old transducers that can no longer be

used must be disposed of separately and not with normal household waste.

If you need more information about waste disposal, please contact your local

authorities or the dealer from whom you purchased the product.

Qualified personnel

Qualified personnel means persons entrusted with siting, mounting, starting

up and operating the product, who possess the appropriate qualifications for

their function.

This includes people who meet at least one of the three following require-

ments:

- Knowledge of the safety concepts of measurement and automation

technology is a requirement and as project personnel, you must be familiar

with these concepts.

- As measurement and automation plant operating personnel, you have been

instructed how to handle the machinery. You are familiar with the operation

of the equipment and technologies described in this documentation.

- As commissioning engineers or service engineers, you have successfully

completed the training to qualify you to repair the measurement and au-

tomation systems. You are also authorized to activate, ground and label cir-

cuits and equipment in accordance with safety engineering standards.

It is also essential to comply with the legal and safety requirements for the ap-

plication concerned during use. The same applies to the use of accessories.

The strain transducers must only be installed by qualified personnel, strictly in

accordance with the specifications and with the safety requirements and regu-

lations listed below.

SLB700A/06VA1, SLB700A/06VA2

A3253-2.0 en/de/frHBM

1 Scope of delivery

1 strain transducer SLB‐700A/06VA1 (version with voltage output 0 to 10V)

or SLB‐700A/06VA2 (version with current output 4 to 20mA)

1 Mounting instructions

2 General application instructions

The SLB‐700A/06VA1 and SLB‐700A/06VA2 strain transducers are suitable

for the measurement of positive and negative strains. They provide highly ac-

curate static and dynamic force measurements and must therefore be han-

dled very carefully. Particular care must be taken when transporting and

installing the devices. Dropping or knocking the transducers may cause per-

manent damage.

The specifications list the permissible limits for mechanical, thermal and elec-

trical stress. It is essential that these are taken into account when planning the

measuring set-up, during installation and, ultimately , during operation.

SLB700A/06VA1, SLB700A/06VA2

A3253-2.0 en/de/fr HBM

3 Structure and mode of operation

3.1 Transducer

A solid connection is formed between the strain transducer and the measure-

ment object with the four screws. Mechanical loading causes a change in

length of the measurement object which is then transferred to the strain trans-

ducer. The change in length changes the electrical resistance of the installed

strain gage proportional to the strain. This is converted into the output signal

by the integrated DC amplifier. The SLB‐700A/06VA1 outputs a voltage be-

tween 0 and 10V, the SLB‐700A/06VA2 a current between 4 and 20mA.

3.2 Strain gage and integrated electronics cover protection

The strain transducer is potted with a special silicone mass at appropriate

points to protect the strain gages and the integrated amplifier electronics. This

securely protects the sensitive components against environmental influences.

The silicone must not be damaged or removed.

Strain link

XXXXXXX

Un=19...30V

1Wmax

#xxxxxxxxx

Top

Bottom

Silicone cover

Fig. 3.1: Silicone cover

SLB700A/06VA1, SLB700A/06VA2

A3253-2.0 en/de/frHBM

4 Conditions on site

4.1 Ambient temperature

Temperature changes lead to an expansion of the structure and therefore to a

change in the zero point. The strain transducers are therefore compensated

so that they can equalize and not display the thermal strain of the structure.

This compensation is implemented for standard construction and tool steels ,

e.g. C45, 1.1730, with a thermal expansion coefficient  of 12  10‐6/C.

If mounted on a structure with a different thermal expansion coefficient, a tem-

perature-dependent signal is output that corresponds to the temperature ex-

pansion of the material less 12  10‐6/C.

Tip

If it is possible to reset (zero setting) the zero signal at short intervals, the in-

fluence of the temperature change on the zero signal can be ignored.

The influence of the temperature on the sensitivity is low. The influence re-

sults mainly from the change in the E modulus of the object on which the

strain transducer is mounted. The E modulus becomes smaller under the in-

fluence of heat and therefore a greater strain and higher measured value will

result when the same force is applied to the component. The reverse effect

occurs under the influence of cold.

To obtain optimum measurement results, the nominal (rated) temperature

range must be complied with.

4.2 Moisture and chemical effects

The transducers reach the protection class IP65 as per DIN EN 60529 (test

conditions: 0.5 hours under 1m water column) and are therefore briefly wa-

tertight. Nevertheless, the transducers must be protected against long-term

effects of moisture or weather such as rain, snow, etc.

The transducers must be protected against chemicals that could attack the

transducer body steel, silicone or the cable.

With stainless steel transducers, please note that acids and all materials

which release ions will also attack stainless steels and their welded seams.

Should there be any corrosion, this could cause the transducer to fail. In this

case, appropriate protective measures should be implemented.

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