HBM FS65 Installation Manual

Add to My manuals
24 Pages

advertisement

HBM FS65 Installation Manual | Manualzz

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

E Hottinger 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.

English

1

1.1

Technical Details

General Information

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1.1

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1.2

Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1.3

Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1.4

Quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1.5

Accessories

1.2

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

General Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2

2.1

Sensor Installation

Accelerometer

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1.1

List of Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1.2

Placing the Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1.3

Fixing the Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1.4

Protecting the Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2

Bi or Triaxial Accelerometer

2.2.1

List of Materials

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2.2

Assembling the Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2.3

Fixing the Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2.4

Protecting the Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

10

10

11

11

8

9

8

8

12

20

20

3

3.1

Sensor Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Sensor Calibration Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1.1

General nformation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1.2

Calibration Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1.3

Acceleration Computation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

22

22

23

23

23

4

4

5

4

4

6

6

7

FS65 A4265-2.3

HBM: public 3

Technical Details

1 Technical Details

Part Number

K-FS65-30-11-302

K-FS65-30-13-302

K-FS65-30-10-302

1.1

General Information

This installation guide applies to the following products:

Description

FS65 - Accelerometer • Outdoor • FC/APC

FS65 - Accelerometer • Outdoor • SC/APC

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.

4 A4265-2.3

HBM: public FS65

FS65

Technical Details

: 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

A4265-2.3

HBM: public 5

Technical Details

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.

6 A4265-2.3

HBM: public FS65

1.2

General Specifications

Sensor

Sensitivity

1)

Measurement range

Frequency range

Resonance frequency

1)

Flatness

Resolution

2)

Maximum calib. error

Transverse sensitivity

Optical

Central wavelength

Spectral width (FWHM)

Reflectivity

Side lobe suppression

Inputs / Outputs

Cable type

Cable length

Connectors

75 pm/g @ 40 Hz

±10 g

0 to 50 Hz

430 Hz

< 2%

12.5 μg/ Ǡ Hz

±0.1 g @ 40 Hz

< 0.1%

1500 to 1600 nm

< 0.2 nm

> 65%

> 10 dB

Ø 3 mm outdoor (armor)

2 m each side (±5 cm)

FC/APC

SC/APC

NC (No Connectors)

Environmental

Operation temperature

Protection class

Mechanical

Materials

Dimensions

Weight

-20 to 80 ºC

IP68

Aluminum

73 x Ø 53 mm

250 g

1)

2)

Typical values

For 1 pm resolution in wavelength measurement

FS65 A4265-2.3

HBM: public

Technical Details

7

Sensor Installation

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.

8 A4265-2.3

HBM: public FS65

FS65

Sensor Installation

2.1.2

Placing the Sensor

The FS65 - Accelerometers can be placed headed up, headed down or towards the side (

Fig. 2.1

).

Fig. 2.1

ÓÓÓÓ

ÓÓÓÓ

ÓÓÓÓ

ÓÓÓÓ

ÔÔÔÔÔÔÔÔÔÔÔÔÔ ÓÓÓÓ

ÔÔÔÔÔÔÔÔÔÔÔÔÔ ÓÓÓÓ

ÔÔÔÔÔÔÔÔÔÔÔÔÔ ÓÓÓÓ

ÔÔÔÔÔÔÔÔÔÔÔÔÔ ÓÓÓÓ

ÔÔÔÔÔÔÔÔÔÔÔÔÔ ÓÓÓÓ

ÓÓÓÓ

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.

A4265-2.3

HBM: public 9

Sensor Installation 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.

10 A4265-2.3

HBM: public FS65

FS65

Sensor Installation

2.2

Bi or Triaxial Accelerometer

2.2.1

List of Materials

Included Material

S

Accelerometers

S

Mounting Plate:

- 1x Plate

- 1x Positioning Block

- 4x Cable Guide

- 8x M3x6

- 2x M5x8

- 4x M5x12

- 4x M6x20

S

Protection Cover (optional):

- 1x Cover

- 8x M6x20

List of Needed Equipment

The needed tools to install the FS65 - Accelerometer depend on the structure the sensor will be installed. 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.

A4265-2.3

HBM: public 11

Sensor Installation

2.2.2

Assembling the Sensors

The Bi or Triaxial Accelerometer is assembled on a mounting base using two or three accelerometers.

Its position must be set according to its measuring direc­ tion. On

Fig. 2.3

an example of the possible two measur­

ing directions is presented and on Fig. 2.4

a Triaxial

assembly is presented.

measuring directions

Fig. 2.3

measuring directions

12

Fig. 2.4

A4265-2.3

HBM: public FS65

FS65

Sensor Installation

Preparing the Mounting Plate

Mechanical parts of the mounting plate are delivered separately.

Start by screwing the position block to the mounting plate using 3 of the provided M5x12 screws. These screws should be threaded from the backside as shown on

Fig. 2.5

.

Mounting plate

M5x12

Fig. 2.5

Position block

Fig. 2.6

A4265-2.3

HBM: public 13

Sensor Installation

Fixing the Sensors

On the horizontal axis, use the provided M5x8 screws to fix the accelerometer to the positioning block.

Ensure that the fibers are oriented at approximately 30º, with the fibers that will be exiting the protection cover at the lower position (

see Fig. 2.7 and Fig. 2.8

).

Fig. 2.7

M5x8

Approx. 30°

Fig. 2.8

14

Fig. 2.9

A4265-2.3

HBM: public FS65

Sensor Installation

For the vertical axis sensor, use the remaining M5x12 screw.

Place the vertical sensor with the fibers oriented at 45º

( Fig. 2.12

).

M5x12

Fig. 2.10

Fig. 2.11

45°

FS65

Fig. 2.12

A4265-2.3

HBM: public 15

Sensor Installation

Arranging Cables

Use the provided Cable Guides ( Fig. 2.13

) and M3x6 screws to place and fix the cable guides on the mounting

plate ( Fig. 2.14

).

Cable Guide

M3x6

Fig. 2.13

16

Fig. 2.14

Considering the triaxial configuration and the defined

directions as represented on Fig. 2.15

, sensor connec­

tion should be performed as on

Fig. 2.16

:

A4265-2.3

HBM: public FS65

FS65

Sensor Installation

A

B y z x

A

Fig. 2.15

B

A

Sensor x

A

B

Sensor z

B

A

Sensor y

B

Fig. 2.16

Standard Accelerometers are delivered with 2 m length cables on each side. This is not an optimized length for the Bi or Triaxial configuration, but connections can be performed.

Fig. 2.17

shows an assembly of sensors with

A4265-2.3

HBM: public 17

Sensor Installation

the standard cable lengths. In Fig. 2.18

, an assembly of

sensors with an optimized cable length is presented.

Fig. 2.17

18

Fig. 2.18

Start by taking the cable B (

Fig. 2.15

) of the sensor on

the x axis and place it around the assembly as on

Fig. 2.19

.

Then, take cable A of the sensor on the z axis and place

it around the assembly as on Fig. 2.20

. Use an Optical

Adapter and attach both connectors.

A4265-2.3

HBM: public FS65

Sensor Installation

Ö

Ö

Ö

ÖÖ ÖÖ ÇÇ ÇÇ ÇÇ ÇÇ ÖÖ ÇÇ Ö ÖÖÖÖÖÖÖÖÖ ÇÇ ÖÖ ÖÖ

ÖÖÖÖÖÖÖÖÖ

ÖÖÖÖÖÖÖÖÖ

ÖÖÖÖÖÖÖÖÖ

ÖÖÖÖÖÖÖÖÖ

ÖÖÖÖÖÖÖÖÖ

ÖÖÖÖÖÖÖÖÖ

ÖÖÖÖÖÖÖÖÖ

Ö ÖÖÖÖÖÖÖÖÖ

Fig. 2.20

Ö

Ö

Fig. 2.19

ÇÇ ÇÇ ÖÖ Ç ÇÇ ÇÇ ÇÇ ÖÖ ÇÇ Ö Ö Ö ÇÇ Ö Ç ÖÖ ÇÇ ÖÖ Ç Ç Ö Ç ÖÖ ÇÇ Ö Ö ÇÇÇÇÇÇÇÇÇ ÖÖÖÖÖÖÖÖÖ ÇÇ ÇÇ

Ö Ö ÇÇ Ö Ç ÖÖ ÇÇ ÖÖ Ç Ç Ö Ç Ö Ç ÖÖ ÇÇ Ö Ö ÇÇÇÇÇÇÇÇÇ ÖÖÖÖÖÖÖÖÖ ÇÇ ÇÇ ÖÖ ÖÖ ÖÖ ÖÖ ÇÇ ÇÇ ÖÖ Ç ÇÇ ÖÖ ÖÖ ÖÖ ÖÖ ÇÇ ÇÇ ÖÖ ÇÇ Ö Ö Ç

ÇÇÇÇÇÇÇÇÇ ÖÖÖÖÖÖÖÖÖ

ÇÇÇÇÇÇÇÇÇ ÖÖÖÖÖÖÖÖÖ

ÇÇÇÇÇÇÇÇÇ ÖÖÖÖÖÖÖÖÖ

ÇÇÇÇÇÇÇÇÇ ÖÖÖÖÖÖÖÖÖ

ÇÇÇÇÇÇÇÇÇ ÖÖÖÖÖÖÖÖÖ

ÇÇÇÇÇÇÇÇÇ ÖÖÖÖÖÖÖÖÖ

ÇÇÇÇÇÇÇÇÇ ÖÖÖÖÖÖÖÖÖ

ÇÇÇÇÇÇÇÇÇ ÖÖÖÖÖÖÖÖÖ Ö

Fig. 2.21

ÇÇ ÖÖ Ç Ç ÇÇ Ç Ç Ö ÖÖ ÇÇ ÖÖ Ç Ö Ç Ö ÇÇ ÖÖ ÇÇ Ç Ö Ç Ö Ç Ö Ö Ç Ö ÇÇÇÇÇÇÇÇÇÇ ÖÖÖÖÖÖÖÖÖÖ ÇÇÇÇÇÇÇÇÇÇ Ç

Ö Ç Ö ÇÇ ÖÖ ÇÇ Ç Ö Ç Ö Ç Ö Ç Ö Ö Ç Ö ÇÇÇÇÇÇÇÇÇÇ ÖÖÖÖÖÖÖÖÖÖ ÇÇÇÇÇÇÇÇÇÇ Ç Ö Ö Ö Ö Ç ÇÇÇ ÖÖ ÇÇ Ö Ö Ö Ö Ç Ç Ç ÖÖ ÇÇ ÖÖ Ö Ö Ç

ÖÖÖÖÖÖÖÖÖÖ ÇÇÇÇÇÇÇÇÇÇ ÖÖ ÖÖ ÇÇÇÇÇÇÇÇÇÇ

ÖÖÖÖÖÖÖÖÖÖ ÇÇÇÇÇÇÇÇÇÇ ÖÖ ÖÖ ÇÇÇÇÇÇÇÇÇÇ

Ö Ç Ç ÇÇ Ç Ö Ö Ö ÖÖ ÖÖ ÇÇ ÇÇÇÇÇÇÇÇÇÇ ÖÖÖÖÖÖÖÖÖÖ ÇÇÇÇÇÇÇÇÇÇ Ö

ÇÇ Ç Ö Ö Ö ÇÇÇÇÇÇÇÇÇÇ ÖÖÖÖÖÖÖÖÖÖ ÇÇÇÇÇÇÇÇÇÇ Ö Ö Ç Ç

ÖÖÖÖÖÖÖÖÖÖ ÇÇÇÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇÇÇÇ

ÖÖÖÖÖÖÖÖÖÖ ÇÇÇÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇÇÇÇ

ÖÖÖÖÖÖÖÖÖÖ ÇÇÇÇÇÇÇÇÇÇ ÇÇÇÇÇÇÇÇÇÇ

Ç ÇÇÇÇÇÇÇÇÇÇ ÖÖÖÖÖÖÖÖÖÖ ÇÇÇÇÇÇÇÇÇÇ

Ö

Ö

Ç

Fig. 2.22

Ç

Proceed in a similar way with cable B of the z axis accelerometer (

Fig. 2.21

) and cable A of the y axis accelerometer (

Fig. 2.22

). Use clumps to fix cabling and connections.

FS65 A4265-2.3

HBM: public 19

Sensor Installation

2.2.3

Fixing the Assembly

The Bi or Triaxial assembly is now ready to be fixed to the structure. The mounting base has 4 M6 holes for that purpose. Four M6x20 screws are provided, but these can be or not be suited for fixing the base to the structure.

The fixing method should be carefully defined.

2.2.4

Protecting the Sensors

Although the accelerometer is IP68 rated, the performed connections on the assembly are not. This means that for outdoor usage of the assembly arranged as above should have the connectors protected against moisture and dust. HBM FiberSensing suggests the use of a vul­ canizing tape around the connectors and adapter

(

Fig. 2.23

).

Fig. 2.23

For mechanical protection and external cover of the Bi or

Triaxial Assembly, HBM FiberSensing has a specially designed cover.

It is prepared to be screwed to the surface with 8 M6x20 screws and has two holes for cable exiting.

20 A4265-2.3

HBM: public FS65

Sensor Installation

Fig. 2.24

FS65 A4265-2.3

HBM: public 21

Sensor Configuration

3 Sensor Configuration

3.1

Sensor Calibration Sheet

Every HBM FiberSensing sensor is provided with a cali­ bration sheet. The layout of this document is the same for all accelerometers.

22

Fig. 3.1

A4265-2.3

HBM: public FS65

FS65

Sensor Configuration

3.1.1

General nformation

Number 1 in Fig. 3.1

shows the general information on

the particular sensor, such as its type, the sensor part number, its serial number and the production tracking number, the FBG ID.

3.1.2

Calibration Data

The most important information related to the accelerom­ eter sensor – the two central wavelengths at room tem­ perature and sensitivity - is shown in the Calibration Data

table (number 2 in Fig. 3.1

). These values should be

used for acceleration computation.

3.1.3

Acceleration Computation

Number 3 in Fig. 3.1

exemplifies the calculations that

should be performed for wavelength measurement to acceleration conversion. The acceleration variation of an

Accelerometer, under a reference frequency, is given by the quotient of wavelength shift from the zero moment by the sensor's sensitivity.

acceleration

+ x ń

S

´ acceleration

+ ( WL * CWL ) ń S

Fig. 3.2

Where

S x is the wavelength shift in nm

S S is the given sensitivity in nm/g

S

CWL is the central wavelength of the sensor at the zero moment in nm

S

WL is the measured wavelength in nm.

A4265-2.3

HBM: public 23

HBM Test and Measurement

Tel. +49 6151 803-0

Fax +49 6151 803-9100 [email protected]

measure and predict with confidence

advertisement

Related manuals

Download PDF

advertisement