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Sensor Installation

24

A4263-3.5

HBM: public

FS64

Fig. 2.14

Fig. 2.15

Use the four black brakets to keep the plates at a 90 deg
angle (

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Summary of Contents for FS64

Page 1: ...Installation Guide English FS64 Tilt Sensor...

Page 2: ...ncelos Costa 277 4470 640 Maia Portugal Tel 351 229 613 010 Fax 351 229 613 020 fibersensing hbm com www hbm com fs Mat 7 2002 4263 DVS A4263 3 5 HBM public 05 2015 Sensor Design Version v2 1 E Hottin...

Page 3: ...10 2 1 2 Needed Tools 11 2 2 Parallel Tilt Sensor 12 2 2 1 Preparing the Surface 12 2 2 2 Placing the Sensor 14 2 2 3 Unlocking the Sensor 16 2 2 4 Vertically Aligning 21 2 2 5 Protecting the Sensor 2...

Page 4: ...3 3 5 HBM public FS64 3 Sensor Configuration 33 3 1 Sensor Calibration Sheet 33 3 1 1 General Information 34 3 1 2 Technical Information 34 3 1 3 Tilt Computation 34 3 2 Temperature Effect on the Sens...

Page 5: ...erview The FS64 Tilt Sensor is a Fiber Bragg Grating FBG based sensor designed to measure small variations of angle towards the vertical The sensor uses two FBGs in an innovative push pull configurati...

Page 6: ...nd 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 tilt sensors ca...

Page 7: ...nsing 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 const...

Page 8: ...flectivity 65 Side lobe suppression 10 dB Inputs Outputs Cable type 3 mm outdoor armor Cable length 2 m each side 5 cm Connectors FC APC SC APC NC No Connectors Environmental Operation temperature 20...

Page 9: ...4263 3 5 HBM public 9 1 2 1 Signal Convention The FS64 Tilt Sensor signal convention sets negative angle value for clockwise rotation and positive angle value for counterclockwise rotation see Fig 1 1...

Page 10: ...Sensor Package Included Material Parallel Tilt Sensor1 Orthogonal Tilt Sensor2 Biaxial Tilt Sensor3 Tilt Sensor 1 1 2 Calibration Sheet 1 1 2 Mounting plate sheet 2 2 Bracket 4 4 Umbrako Screw 8xM6 L...

Page 11: ...ted screwdriver L30 D2 8 E0 7 mm L100 D2 8 E0 7 mm L100 D2 8 E0 7 mm D7 0 E1 1 mm D7 0 E1 1 mm D7 0 E1 1 mm Mechanical anchor Hilti HSA R M6 5 suggested Hilti HSA R M8 5 suggested Hilti HSA R M8 5 sug...

Page 12: ...be vertical and regular Information If the sensor wall is not vertical it will not have the expected behavior There is the possibility to design mounting plates to ensure the right position of the sen...

Page 13: ...igh tening up the sensor its back can get deformed which will influence the sensor s behavior Afterwards mark two points 20 cm apart and vertically aligned Fig 2 2 Information The tilt sensor has a sl...

Page 14: ...mm Verify the screws position with a measuring tape and then anchor them definitely Fig 2 3 tightening them with a torque of 5Nm Remove the nut before proceeding 2 2 2 Placing the Sensor Carefully tak...

Page 15: ...g 2 4 Fig 2 5 Place the washer and hexagon nut on both anchors Fig 2 5 With the help of a bubble level rotate the sensor along the slot and place the sensor as close to the vertical as possible Fig 2...

Page 16: ...cking the Sensor Important The following installation steps should be performed in accordance with the presented order Please read the next introduction carefully before unlocking the sensor The FS64...

Page 17: ...y non removable screw To be unfastened only non removable screw To be unfastened and removed removable screw Fig 2 7 1 Any unlocking action should only be performed after complete fixation of the sens...

Page 18: ...is control is to configure the sensor so that the tilt value is measured equation shown on number 2 in Fig 2 8 Nevertheless if the available equipment does not have software to perform this auto matic...

Page 19: ...grating s wavelengths The unlocking of the sensor should be done slowly and by changing sides frequently ensuring that the wavelengths change is performed in a controlled way and equally to both FBGs...

Page 20: ...unscrew the locking screws on the front panel of the sensor as in Fig 2 10 changes in wavelengths should never be greater than 1 nm See number 3 on Fig 2 7 4 The side locking parts are the last to be...

Page 21: ...be smaller Nevertheless the unscrewing should be per formed in small steps and alternately as in the front screws 2 2 4 Vertically Aligning Now it is time to set the final alignment of the sensor Ens...

Page 22: ...ensor If the sensor is to be placed outdoors it should be installed inside a box with a proper IP This box will pro tect the sensor from moisture sun and the influence of the shades on the measurement...

Page 23: ...tation before being removed from its position To lock the tilt sensor please proceed in reverse order of the explained in sec tion 2 2 3 page 16 2 3 Orthogonal and Biaxial Tilt Sensor 2 3 1 Preparing...

Page 24: ...Sensor Installation 24 A4263 3 5 HBM public FS64 Fig 2 14 Fig 2 15 Use the four black brakets to keep the plates at a 90 deg angle Fig 2 15...

Page 25: ...the surface as for a single tilt sensor Using the mounting plate mark and drill the four points in order to anchor the plate vertically Fig 2 16 Drill the holes according to the chosen M8 anchors sug...

Page 26: ...of 15 Nm is suggested with the desired orien tation Ensure that the orthogonal plate is vertical Fig 2 17 Information If the sensor surface is not vertical it will not have the expected behavior Use t...

Page 27: ...ion FS64 A4263 3 5 HBM public 27 Fig 2 18 Fig 2 19 Apply the two M6 L30 screws into the two vertically aligned holes on the orthogonal plate Fig 2 19 The mounting plate is now ready to hold the tilt s...

Page 28: ...lic FS64 Fig 2 20 2 3 3 Placing and Unlocking the Tilt Sensor Take the first tilt sensor out of the transportation box and place it on a stable surface Remove both mass locking screws shown on Fig 2 2...

Page 29: ...i unlocked Take extra care when handling the sensor or performing any actions next to the sensor Carefully place the sensor on the support Fig 2 22 Proceed as if placing a single tilt sensor Align the...

Page 30: ...nnect the sensor to the interrogator as explained in section 2 2 3 page 16 Control the wavelengths while unscrewing the locking screws on both sides of the sen sor see number 3 on Fig 2 7 If necessary...

Page 31: ...se Slowly remove the nuts and change the tilt sensor to the other plate of the mounting base Fig 2 25 Fix the sen sor as described in section 2 2 2 page 14 for a single tilt sensor Finish unlocking th...

Page 32: ...d tighten up the screws as described for the uniaxial sensor Fig 2 27 Fig 2 27 2 3 5 Protecting the Sensor Protect the sensors as described in the section on the uniaxial sensor 2 3 6 Locking the Sens...

Page 33: ...guration FS64 A4263 3 5 HBM public 33 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 presented b...

Page 34: ...is shown in the technical information table number 2 in Fig 3 1 These values should be used for tilt computation 3 1 3 Tilt Computation Number 3 in Fig 3 1 exemplifies the calculations that should be...

Page 35: ...n at the zero moment in pm where CWL2 CWL1 S WLn is the measured wavelength of FBG n in pm 3 2 Temperature Effect on the Sensor The tilt sensor is designed with two Fiber Bragg Gratings in a push pull...

Page 36: ...www hbm com HBM Test and Measurement Tel 49 6151 803 0 Fax 49 6151 803 9100 info hbm com measure and predict with confidence A4263 3 5 7 2002 4263 HBM public...

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