HBM FS65 Manual de usuario

Installation Guide

English

FS65

Accelerometer

Hottinger Baldwin Messtechnik GmbH

Im Tiefen See 45

D-64239 Darmstadt

Tel. +49 6151 803-0

Fax +49 6151 803-9100

[email protected]

www.hbm.com

HBM FiberSensing, S.A.

Optical Business

Rua Vasconcelos Costa, 277

4470-640 Maia

Portugal

Tel. +351 229 613 010

Fax +351 229 613 020

[email protected]

www.hbm.com/fs

Mat.: 7-2002.4265

DVS: A4265-2.3 HBM: public

05.2015

Sensor Design Version: v1.0

EHottinger Baldwin Messtechnik 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.

FS65 A4265-2.3 HBM: public 3

English

1 Technical Details 4.........................................

1.1 General Information 4........................................

1.1.1 Overview 4.................................................

1.1.2 Characteristics 4.............................................

1.1.3 Applications 5...............................................

1.1.4 Quality 6...................................................

1.1.5 Accessories 6...............................................

1.2 General Specifications 7......................................

2 Sensor Installation 8........................................

2.1 Accelerometer 8.............................................

2.1.1 List of Materials 8............................................

2.1.2 Placing the Sensor 9.........................................

2.1.3 Fixing the Sensor 10..........................................

2.1.4 Protecting the Sensor 10.......................................

2.2 Bi or Triaxial Accelerometer 11.................................

2.2.1 List of Materials 11............................................

2.2.2 Assembling the Sensors 12....................................

2.2.3 Fixing the Assembly 20........................................

2.2.4 Protecting the Sensors 20......................................

3 Sensor Configuration 22.....................................

3.1 Sensor Calibration Sheet 22....................................

3.1.1 General nformation 23.........................................

3.1.2 Calibration Data 23...........................................

3.1.3 Acceleration Computation 23...................................

Technical Details

4A4265-2.3 HBM: public FS65

1 Technical Details

1.1 General Information

This installation guide applies to the following products:

Part Number Description

K-FS65-30-11-302 FS65 - Accelerometer • Outdoor • FC/APC

K-FS65-30-13-302 FS65 - Accelerometer • Outdoor • SC/APC

K-FS65-30-10-302 FS65 - Accelerometer • Outdoor • NC

1.1.1 Overview

The FS65 - Accelerometer is a Fiber Bragg Grating

(FBG) based sensor, suitable for a large range of appli

cations where low frequency and small amplitude vibra

tions are present.

1.1.2 Characteristics

: Robustness

Long-term reliability ensured by innovative sensor

design, careful selection of materials and IP68 packag

ing.

: Completely passive

Inherent immunity to all electromagnetic effects (EMI,

RFI, sparks, etc.) and safe operation in hazardous envi

ronments.

Technical Details

FS65 A4265-2.3 HBM: public 5

: High multiplexing capability

Connection of a large number of sensors to a single opti

cal fiber, reducing network and installation complexity.

: Remote sensing

Large distance between sensors and interrogator (sev

eral kilometers).

: Compatible with most interrogators

Provided with calibration sheet, allowing easy and accu

rate configuration.

: Self-referenced

Based on the measurement of an absolute parameter -

the Bragg wavelength - independent of power fluctua

tions.

1.1.3 Applications

HBM FiberSensing accelerometer can be used in a large

range of monitoring applications, including measuring

ambient induced vibration of civil structures.

: Civil Engineering

: Energy

: R&D

Technical Details

6A4265-2.3 HBM: public FS65

1.1.4 Quality

All HBM FiberSensing's processes are strictly controlled

from development to production. Each product is sub

jected to high standard performance and endurance

tests, individually calibrated and checked before ship

ping.

HBM FiberSensing, S.A. concentrates all optical sensing

activity of HBM and is an ISO 9001:2008 certified com

pany.

1.1.5 Accessories

The implementation of complex sensing networks in large

structures is made simpler with HBM FiberSensing

accessories. These include cables especially designed to

resist harsh environments as in civil engineering, not only

during construction, but also during the lifetime of the

structure (humidity, corrosion, etc.).

HBM FiberSensing also provides accessories for com

pact in series mounting of two or three accelerometers in

transversal directions, allowing the simultaneous mea

surement of vibration along multiple axis.

Technical Details

FS65 A4265-2.3 HBM: public 7

1.2 General Specifications

Sensor

Sensitivity1) 75 pm/g @ 40 Hz

Measurement range ±10 g

Frequency range 0 to 50 Hz

Resonance frequency1) 430 Hz

Flatness < 2%

Resolution2) 12.5 μg/ǠHz

Maximum calib. error ±0.1 g @ 40 Hz

Transverse sensitivity < 0.1%

Optical

Central wavelength 1500 to 1600 nm

Spectral width (FWHM) < 0.2 nm

Reflectivity > 65%

Side lobe suppression > 10 dB

Inputs / Outputs

Cable type Ø 3 mm outdoor (armor)

Cable length 2 m each side (±5 cm)

Connectors FC/APC

SC/APC

NC (No Connectors)

Environmental

Operation temperature -20 to 80 ºC

Protection class IP68

Mechanical

Materials Aluminum

Dimensions 73 x Ø 53 mm

Weight 250 g

1) Typical values

2) For 1 pm resolution in wavelength measurement

Sensor Installation

8A4265-2.3 HBM: public FS65

2 Sensor Installation

2.1 Accelerometer

2.1.1 List of Materials

Included Material

Accelerometer

List of Needed Equipment

The needed tools to install the FS65 - Accelerometer

depend on the structure the sensor is to be installed on.

In many cases, mounting parts may need to be designed

in order to adapt the sensor to the spot where it is going

to be installed.

The installation solution should be carefully designed in

order to meet the sensor measuring direction and the

structure characteristics.

Sensor Installation

FS65 A4265-2.3 HBM: public 9

2.1.2 Placing the Sensor

The FS65 - Accelerometers can be placed headed up,

headed down or towards the side (Fig. 2.1).

ÓÓÓÓ

ÔÔÔÔÔÔÔÔÔÔÔÔÔ

Fig. 2.1

Information

This will only alter the sensor's DC output. Dynamically, it

will still have the same behavior.

Its position must be set according to its measuring direc

tion.

Sensor Installation

10 A4265-2.3 HBM: public FS65

measuring

direction

Fig. 2.2

2.1.3 Fixing the Sensor

The Accelerometer has a M5 hole on its basis to be

screwed to the surface.

2.1.4 Protecting the Sensor

Accelerometer is IP68 rated, meaning that no protection

is needed. Nevertheless, it can be protected with a box

or other protection methods.

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