Archives for September 2011

Mobile and Fixed Lasertex Laser Interferometric Systems

September 25, 2011 by Ervin Kamenar

With the support of the Croatian National Foundation for Science, Higher Education and Technological Development, a mobile and a fixed Lasertexlaser interferometric system were purchased. The characteristics of the two systems are as follows.

Mobile laser interferometer LSP 30-3D:

Two-frequency laser interferometer for measurement of displacements and geometry.
Software developed in accordance with PN – 93 M55580 and ISO / DIS 230 standard, which allows to create custom machine tool calibration reports.
Possible measurement types: linear and angular positioning, velocity, straightness, flatness, squareness, rotational positioning.
Compensation of environmental influences (pressure, temperature, humidity).
Dynamic measurements at frequencies up to 10 kHz.

Measuring parameters:

Measurement	Range	Resoultion	Accuracy
Distance	0 – 30 m	0,001 μm	± 0,41 μm/m in air ± 0,9 μm/m steel
Velocity	0 – 0,3 m/s (1 m/s)*	0,25 μm/s	± 0,1 %
Angles	0 – 3600 arcsec	0,01 arcsec	± 0,1 %
Straightness (with angular optics)	0 – 12 m (± 3 mm on the flatness area)	0,02 μm (on a 100 mm base)	± 0,5 %
Straightness (with Wollaston prism)	0 – 3 m 0,8 – 10 m (± 3 mm on the flatness area)	0,01 μm 0,1 μm	± 1 % ± 2,5 %
Flatness	0 – 12 m (± 3 mm on the flatness area)	0,02 μm (on a 100 mm base)	± 0,5 %
Squareness (Wollaston prism)	± 1000 arcsec	0,03 arcsec	± 1 % (± 1,5 arcsec)
Rotary measurements	± 5°	2 arcsec	± 0,2 %

* max. speed for 0.001 μm resolution is 0.1 m/s

Interferometer LL10:

Maximum axis length: 10 m (double and single pass optics), 30m (single pass optics).
Accuracy: with meteo sensors 10 ppm, without meteo sensors 1ppm, in vacuum 0.01 ppm.
Resoultion 2 nm.
Data read out frequency up to 100 kHz (USB), up to 50 kHz optical interface.

Filed Under: Equipment @ RiTeh

Metrolaser Vibromet 500V Laser Doppler Vibrometer

September 23, 2011 by Ervin Kamenar

With the support of the Ministry of Science, Education and Sports of the Republic of Croatia a Metrolaser Vibromet 500V Laser Doppler Vibrometer was purchased. Its characteristics are the following:

Velocity range	5 μm/s to 1000 mm/s
Vibration frequency range	DC to >20kHz
Working distance	1 cm to 5 m
Movement range	0.1 nm to 10 mm
Optics	Collimated or Variable Focus (1 m to 5 m)
Surface preparation	Usually not needed
Output signal	Analog, demodulated and 10.7 MHz FM
Dimensions	Laser head 24 x 11.4 x 7.6 cm
Dimensions	Electronic controller 30 x 22 x 6 cm
Weight	Laser head 1.4 kg
Weight	Electronic controller 3.9 kg
Low-pass filter	1,2,5,10,20 kHz
Input voltage (max)	± 8 V
Laser	780 nm, <15 mW, Class Illb 650 nm, <1 mW, Class II
Energy requirements	220V / 50 Hz
Operating temperature range	3 – 45°C

Filed Under: Equipment @ RiTeh, Featured

Automatic Precision Positioning and Data Acquisition System

September 23, 2011 by Ervin Kamenar



With the support of the Swiss National Science Foundation through the project “A Stronger Europe with MIcro-and NAnotechnologies (SEMINA)” within the founding scheme for scientific co-operation of the Swiss Confederation with Central and Eastern European countries (SCOPES 2005 – 2008), a National Instrumentssystem for automated precision positioning using DC, stepper or voice-coil motors and data acquisition based on optical encoders and LVDTs was purchased. The main characteristic are the following:
LabVIEW 8.6.1 software for graphical programming (8.5 and 8.6 versions also):	LabVIEW FPGA Module 8.6: field programmable gate arrays for virtual instruments programming.
PXI 1050: 8 PXI (PCI eXtensions for Instrumentation) slots with integrated 4 SCXI (Signal Conditioning Extension for Instrumentation) subsystem slots. SCXI system connected via a bus to the PXI slot enabling the control of SCXI system in multiplex mode. Ideal for applications that require high precision measurement and adjustment of signals.
	PXI 8196: Embedded control computer for PXI and Compact PCI systems. Tests and measurements in real-time. ExpressCard with 34 slots and 4 USB 2.0 ports. RS232 serial port and a parallel port.
PXI 6221: Multifunctional data acquisition card. Two 16-bit analog outputs (833 kS/s). Analog output range ±10 V. 16 16-bit analog inputs. 24 digital I/O; 32-bit counters; digital actuators. Contains PCI, PXI and USB buses. Using the card it is possible to acquire various signals, move actuators and simultaneously execute multiple control loops.
	PXI 7833R (2 pieces): Equipped with reconfigurable I/O (RIO) hardware which allows processing of data onto the card. 8 16-bit analog inputs (200 kS/s). 8 16-bit analog outputs (200 kS/s).- 96 digital I/O. The core of the device is a Virtex-II FPGA 3M programmed using the LabVIEW FPGA Module. The card can be configured to perform a variety of applications that require precise control and accurate timing.
SCXI 1540: 8 channel analogue LVDT (Linear Variable Differential Transformer) module that is used to adjust the signals received from the LVDTs and RVDTs. Each of the 8-channels (333 kS/s) is also a source of AC sensors’ excitation voltage. Low-pass output filter at a cut-off frequency of 250 Hz.
	SCXI 1315: 8-channel terminal block for the NI SCXI 1540 with 6 ports for each channel. Allows easy connecting of LVDTs and RVDTs.
SCB 68 (6 pieces): Protected I/O terminal block that reduces noise and is used to connect the I/O signals to the DAQ device via up to 68 pins.

Filed Under: Equipment @ RiTeh, Featured

Optical Stereomicroscope Olympus SZX16

September 23, 2011 by Ervin Kamenar


With the support of the Croatian National Foundation for Science, Higher Education and Technological Development, an OlympusSZX16 optical stereomicroscope was purchased. Its characteristics are as follows:
	Magnification ratio: 16.4 (0.7/0.8/1/1.25/1.6/2/2.5/3.2/4/5/6.3/8/10/11.5). Max. magnification: 230x. Resolution: 1.11 µm Fine focusing on 80 mm with a 0.77 mm per turn focusing knob Available stereo pair of bifocal Lenses: SDFPLAPO0.5 x PF – Aperture: 0.075 – Working length: 70.5 mm SDFPLAPO1.6 x PF – Aperture: 0.24 – Working length: 30 mm
	Olympus KL1500 LCD cold light source. Power: 150 W.
	Olympus DP25 4.9 megapixel digital CCD camera. 8 images per second at a resolution of 2560 x 1920 px. 32 images per second at 640 x 480 px.
Turnable SZ2-STU2 stand:
Different stands for sample fixture and movement:

Filed Under: Equipment @ RiTeh, Featured

Educational Scanning Tunneling Microscope (STM)

September 23, 2011 by Ervin Kamenar



With the support of the Ministry of Science, Education and Sports of the Republic of Croatia for the scientific Project 0069-028 entitled “Theoretical and experimental analysis of ultra-high precision flexural hinges” (2005 – 2006), a NanosurfEasyScan E-STM educational scanning tunneling microscope was purchased. Its characteristics are the following:
	XY scanning area: 500 nm. Maximum Z displacement: 200 nm. Resolution of height adjustment: 0,003 nm (3 pm). Resolution of other motions: 0,015 nm (15 pm). Gap voltage: ± 10 V in 5 mV steps. Current: ± 100 nA in 25 pA increments. Max sample size: 10 mm. Maximum scanning speed: 1800 points per second. Feedback bandwidth: 3 kHz. Scanning tip: 0,25 mm Pt/Ir wire. Measurement mode: constant current or constant distance. Vibration isolated stand. EasyScan E-line software for visualization of measurement data (Line graph, Colour map, 3D view, …). Portable suitcase.

Filed Under: Equipment @ RiTeh

Agilent InfiniiVision DSO-X 2012A Osciloscope

September 23, 2011 by Ervin Kamenar

With the support of the Business Innovation Center of Croatia (BICRO) an Agilent InfiniiVision DSO-X 2012A Osciloscope was purchased. Its characteristics are as follows:

Analog Channels	2
Digital timing channels	8 on MSO models or with DSOX2MSO upgrade
Bandwidth (upgradable)	100 MHz
Sample rat	1 GSa/s per channel; 2 GSa/s half channel interleaved mode
Memory depth	100 kpts
Waveform update rate	50,000 waveforms per second
WaveGen built-in 20 MHz function generator	Option DSOX2WAVEGEN
Segmented memory	Option DSOX2SGM
Mask limit testing	Option DSOX2MASK

Filed Under: Equipment @ RiTeh, Featured

WS 81 Electronically Controlled Analog Soldering Station 80 W

September 23, 2011 by Ervin Kamenar

With the support of the Business Innovation Center of Croatia (BICRO) a Electronically Controlled Analog Soldering Station WS-81 was purchased. Its characteristics are as follows:

spajkalna_postaja_weller_ws_51_v_kompletu_CO811808

Specifications:

POWER UNIT, EU PLUG
Supply Voltage VAC: 240V
Power Rating: 80W
For Use With: Weller WSD81 and WSD51 Soldering Stations
Plug Type: Euro
Heat Temperature Range: +150°C to +450°C
Temperature Min: 150°C
Temperature Max: 450°C

Filed Under: Equipment @ RiTeh

Feature		UTP3704
Output Voltage	Ch1, Ch2	0~32V
Ch3	5V
Output Current	Ch1, Ch2	0~3A
Ch3	2A
Overload Effect	CV≤1 x 10-4 + 2mV, CC≤2mA
Ripple & Noise	CV≤1mVrms, CC≤1mArms
Regulation	CV – 20mV (Typical Value), CC – 50mV (Typical Value)
Tracking Error	5 x 10 – 3 + 2mV
Reliability	MTBF (e): ≥ 2000 hours
Other Features	Triple Output, Series or Parallel Operation, Current Limitation Auto Switching Between Voltage and Current Operation

‘Wireless Autonomous Tire Pressure Sensor’ Project

September 22, 2011 by Ervin Kamenar

In August 2011 at the Faculty of Engineering in Rijeka, the project entitled “Wireless Autonomous Tire Pressure Sensor (BAST)” funded by the Business Innovation Center of Croatia (BICRO) was successfully completed. The project was evaluated as fifth among the submitted projects in Croatia. The concept of the autonomous battery-less tire pressure sensors based on the harvesting of kinematic energy of environmental vibrations was proven in laboratory and real on-road conditions. Details filmed during the project development are given below.

Part 1:

Part 2:

Filed Under: News

Newport Optical Table

September 21, 2011 by Ervin Kamenar



With the support of the Swiss National Science Foundation through the project “A Stronger Europe with MIcro- and NAnotechnologies (SEMINA)” in the framework of the funding scheme for scientific co-operation of the Swiss Confederation with Central and Eastern European countries (SCOPES 2005 – 2008), a Newport optical table M-RPR-46-8 was purchased. Its characteristics are as follows:
	Stainless steel top plate: 1,2 x 1,8 m. Thickness of top plate: 203 mm (surface plate: 4,8 mm). M6 holes every 25 mm. Highly damped design with a “honeycomb” surface. Surface flatness: ± 0.1 mm on a 600 x 600 mm surface. Deflection under a 114 kg load: <1.3 x 10^-3mm. Dynamic response as shown on the left. RL-2000-428 passive leg 71 cm high, 910 kg loading capacity each. Eigenfrequency of legs: 55 Hz vertical, 45 Hz horizontal.

Filed Under: Equipment @ RiTeh

Encoders and other Measuring Equipment

September 20, 2011 by Ervin Kamenar


	HeidenhainMT 60K Linear encoder: Connectivity: coupling connected with moving parts. Measuring standard: DIADUR grating on silica glass, with a 10 μm grating interval. Accuracy: ± 5 μm. Reference: approximately 1.7 mm from the top. Measurement range: 60 mm. Needed measurement force: 0.1 to 0.6 N. Allowed radial force: ≤ 0.5 N. Operating temperature range: 10 to 40 ºC. Reference temperature: 20 ºC. Incremental signals: sinusoidal 11 μA_PP. Mechanically allowed measurement speed: ≤ 18m/min.
HeidenhainMT 2581 Linear encoder: Actuation: with machine moving parts. Connectivity: clamping arm Ø8h8. Measurement standard: DIADUR phase grating on glass-ceramic ZERODUR, with a 4 μm grating interval. Accuracy: ± 0.2 μm. Reference: approximately 1.7 mm from the upper stop. Measurement range: 25 mm. Required measuring force: – Vertical downwards: 0.6 N. – Vertically upwards: 0.28 N. – Horizontal: 0.44N. Allowed radial force: ≤ 0.8 N. Operating temperature range: 10 to 40 ºC. Reference temperature: 20 ºC. Incremental signals: sine 1 V_PP. Mechanically allowed measurement speed: ≤ 30m/min.
	RenishawRGH22B15L00A contactless optical encoder: Resolution: analog 1 Vpp, 12 µA. Reference: magnetic actuator. Maximum speed: 10 m/s. Tolerance of measurement range: 0.8 ± 0.1 mm.
DCSkywatch Geos No.11 Highly portable Weather Station: Temperature: – Resolution: 0.1° <99.9 then 1° >100. – Interval of measurements: 0.5 s to 24 h. – Accuracy: +/-0.5°C to 25°C. – Measurement range: -40°C to +85°C. Humidity: – Units: %rH. – Resolution : 0.1 %rH. – Interval of measurements: 0.5 s do 24 h. – Accuracy: +/-2% to 50%rH. – Measurement range: 0.1 to 100%rH. Height: – Resolution: 0.1 m from -999.9 to 3000 m; 0.5 m from 3000 to 10000 m; 1 m from 10000 to 21535 m. – Accuracy: 0.1 m – 1 m. – Measurement range: -1000 to 21535 m. Wind: – Resolution: 0.1 units. – 0.1 to 25.0 Beaufort. – Interval of measurements: real-time. – Accuracy: +/-2%. – Measurement range: 0 to 300 km/h.
	Ferag high-precision mechanical bubble level: Accuracy: 0.01 mm/m.