AccuSens
Contents
1. AccuSens User Manual AccuSens User Manual AccuSens User manual Opsens inc 2014 Cyrille Duquet Suite 125 Sainte Foy Quebec G1N 4N6 Canada Tel 418 682 9996 Fax 418 682 9939 info opsens com www opsens com Opsens inc IMP00045 AccuSens Manual rev1 AccuSens User Manual WARRANTY All products manufactured by Opsens inc are warranted to be free of defects in workmanship and materials for a period of one year from the date of shipment No other express warranty is given and no affirmation of Seller by words or actions shall constitute a warranty SELLER DISCLAIMS ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSES WHATSOEVER If any defect in workmanship or material should develop under conditions of normal use and service within the warranty period repairs will be made at no charge to the original purchaser upon delivery of the product s to the factory shipping charges prepaid If inspection by Opsens or its authorized representative reveals that the product was damaged by accident alteration misuse abuse faulty installation or other causes beyond the control of Opsens this warranty does not apply Service repairs or disassembly of the product in any manner performed without specific factory permission voids this warranty OPSENS MAKES NO WARRANTY OF ANY KIND WITH REGARD TO THIS MANUAL INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FO2. Def Probe gt Type Tq Def Probe Press V key to accept the type gt Nam Tql00 OK and V key again to edit the GFO 0000 GF1 0000 name of the sensor GF2 0000 Use Default Name or select a Be en erh ring up or gt Nam TqD1 OK down arrow keys 00 to 99 GEL 0000 GE2 0000 numbers only GF2 0000 Def Probe Enter Gauge Factor GF1 use Nam Tq01 OK arrow keys and validate the SCHI M235 CEO 0000 2 entry with the confirm V key aa 0000 Def Probe Repeat above procedure for Nam Tq01 OK GF1 GF1 4235 GF2 1743 GF2 0000 Def Probe And also for GF2 a GF1 4235 GE2 1743 GF2 5424 Def Probe Select OK and press the Nam Teg Ol ORK confirm v key Gol 4235 GE 1743 GF2 5424 wo eu Quit the menu Opsens Inc 5 IMP00045 AccuSens Manual rev1 AccuSens User Manual 2 3 2 Select a sensor among previously defined sensors Once a sensor is defined it can be selected for a specific channel as indicated below example for selecting in channel 2 Re V Il Z O 5 BON PES WN Bhs 0 DN Il Z O Du D D D D 00 10 00 0 Enter Sensor Select Menu Select a channel using the 4 Y direction arrows and then the confirm V key Select sensor using the up down arrows NOTE Without a sensor connected the AccuSens shows the message NoS or No Signal on its display gt Non V Il 4 Q S 2 4 AccuSens remote connection and control The AccuSens comes with a RS 232 serial communication port The Accu
3. connection 2 2 3 AccuSens setup 4 2 3 1 Define amp sensorin unserer takes 4 2 3 2 Select a sensor among previously defined sensors 6 2 4 AccuSens remote connection and control nas 6 2 5 Analog output ns 6 3 Local Operation 8 3 1 Keyboard 8 3 1 1 Switch on off 8 3 1 2 Menu Button 8 3 1 3 Left Right Arrows 8 3 1 4 Up Down Arrows 8 3 1 5 Confirmation button 8 3 1 6 Scan Button wd 3 1 7 Define Button 9 3 1 8 Select Button wid 3 1 9 Null Button n 9 3 2 Main Menu ag 3 3 Probes Submenu Br 3 3 1 DetiProbO orina tania N E E TE E E E R 9 3 3 2 Sel Probe a A ete e tsar ere nee nine seems EE 10 3 3 3 MOG PIODG KAEA E E tr EA IE AEE O E No NE O AEE 10 3 3 4 Del Probe san A ede EEE E PEREA EULER 10 3 4 Setting SUDMONU ATE ESER E AAA AAA O E ITE E EEA EGER 10 3 4 1 Channels sfr nr TAE SEE SS ta TEE A EA Le SUN Pen eue ESKE ERE 10 3 4 2 Average EE E E E E sd 10 3 4 3 Analog OU dicas 10 3 4 4 A seas Puddeneee dat Bee 11 3 4 5 IA O E E ERE SE BESES SE ERNE A TR Tentes etes ele de Reese Ones 11 3 5 Diagnostic SUN O i 11 4 Remote operation ccocecmnicinoconiconaninnandononicicasnntannarnnicin cntedesntersscanucendereenenteans 13 O Opsens inc v IMP00045 AccuSens Manual rev1 AccuSens User Manual Opsens inc IMP00045 AccuSens Manual rev1 vi 1 AccuSens User Manual AccuSens
4. sensor is de selected 3 4 4 Units The user can choose what are the units displayed for each given type of sensor For example temperature sensors Tq can have their measurements displayed in either Celsius or Fahrenheit This choice affects the values on the display on the analog output as well as the values sent by the serial port Note that when the units are changed the analog output scale usually needs to be adjusted For almost all sensor types the user can select between two kinds of physical units for outputting the data readings as indicated in the following table Sensor type Physical units Tq Medical Temperature Celsius C Fahrenheit F NOTE changing the kind of physical units of a specific sensor type will affect all the defined sensors of that type 3 4 5 Special This submenu contains two special functions Unit Mode and No Signal The unit mode setting overrides the display in physical units and gives a reading of the optical path difference of the sensors instead This is a specialized command that should be used only when properly instructed by Opsens personnel There are certain circumstances i e some remote control programs where it is not desirable to display a No Signal when a sensor is unconnected or defective Hence the No Signal message can be enabled or disabled This choice affects the values on the display on the analog output as well as
5. Operating Principle The AccuSens is a fiber optic white light interferometric multi channel signal conditioner having the capability of accurately measuring the absolute path length difference of various type of sensing interferometers Opsens produces a variety of interferometric sensors that are based on either so called Fabry Perot interferometer low finesse version configuration or on the polarization interferometer configuration For example Opsens temperature sensors are based on a polarization sensing interferometer using the temperature dependent optical properties of a birefringent crystal while Opsens pressure strain and displacement sensors are based on a Fabry Perot sensing interferometer where the distance between the two mirrors of the interferometer varies as a function of the measured parameter In all cases the sensing interferometer is made so its path length difference varies with the physical parameter of interest The path length difference of the sensing interferometer is accurately measured with a nanometer resolution and this over 30 000 nanometers range Physical measurements are possible if the path length difference of the sensing interferometer is a univocal function of the parameter under scrutiny This being the case with Opsens sensors the AccuSens must know the relation between the path length difference and the physical parameter The Gauge Factors or equivalently the calibration factors that comes with Opsens sen
6. R A PARTICULAR PURPOSE Opsens shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing performance or use of this material This warranty does not apply to the transducers sold for use with Opsens signal conditioners IMPORTANT NOTICE The product specifications and other information contained in this manual are subject to change without notice Opsens has made a concerted effort to provide complete and current information for the proper use of the equipment If there are questions regarding this manual or the proper use of the equipment contact Opsens inc at TEL 418 682 9996 WEB SITE www opsens com FAX 418 682 9939 E MAIL info opsens com PACKAGING FOR SHIPMENT If the product must be shipped to a different location or returned to Opsens for any reason through a common carrier it must be properly packaged to minimize risks of damage SOFTWARE LICENSE AGREEMENT This product contains intellectual property i e software programs that are licensed for use by the end user customer hereinafter end user This is not a sale of such intellectual property The end user shall not copy disassemble or reverse compile the software program The software programs are provided to the end user as is without warranty of any kind either express or implied including but not limited to warranties of merchantability and fitness for a particular purpose The
7. Sens is remotely controlled by having a computer linked to this serial port and using the SoftSens software provided with the signal conditioner With RS 232 serial communication simply connect a standard serial cable all wires straight through to the AccuSens DB 9 connector and to a remote computer Then open SoftSens software as indicated in SoftSens user manual 2 5 Analog output Sensor readings are available for each channel at the analog output terminals located on the backpanel of the instrument See section 3 4 3 for configuring the offset and scaling of the voltage output Figure 6 shows the terminal assignments for the analog output O Opsens Inc 6 IMP00045 AccuSens Manual rev1 AccuSens User Manual CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8 Figure 6 Analog output terminals assignment Opsens Inc 7 IMP00045 AccuSens Manual rev1 AccuSens User Manual 3 Local Operation 3 1 Keyboard 02000002000 3 1 1 Switch on off The instrument is switched on off with this button 3 1 2 Menu Button Menu button gives access to the system menus Once in the menu this button brings the user one level higher into the menu hierarchy Once at the root the system will exit the menu and goes back to measurement display 3 1 3 Left Right Arrows being defined selected modified or deleted or 2 it allows moving from one digit to the other when a value is being entered 3 1 4 Up Down Arrows Up Down arrows allows navi
8. c The Probes submenu is used to define select modify and delete sensor definitions in the sensor list The Setting submenu is used to modify the general system settings such as averaging mode and analog output configuration The Diagnostic submenu is used the display some quality indicators on the optical signal from each channel This is useful for troubleshooting purpose 3 3 Probes Submenu The Probes submenu is where all sensor related commands are made 3 3 1 Def Probe This command is used to define the parameters for a new sensor It has been described in section 2 3 1 Opsens Inc 9 IMP00045 AccuSens Manual rev1 AccuSens User Manual 3 3 2 Sel Probe This command is used to select a sensor for each channel It has been described in section 2 3 2 3 3 3 Mod Probe This command is used to modify the parameters for a sensor that has been already defined It works basically the same way as the Def Probe function described in section 2 3 2 3 3 4 Del Probe This command is used to delete a sensor from the sensor list Select the sensor name to delete with the up down arrows and pressing the confirm V key 3 4 Setting Submenu The functions below are used to setup specific parameters of the instrument Some of the settings are not necessary related to a specific sensor 3 4 1 Channels This function is used to enable ON of disable OFF some or all channels Use the up down arrow to select the channel p
9. entire risk of the quality and performance of the software program is with the end user Opsens inc ii IMP00045 AccuSens Manual rev1 AccuSens User Manual WARNINGS Opsens inc WARNING HIGH PRESSURE High pressure gases and liquids are potentially hazardous Energy stored in these gases or liquids can be released suddenly and with extreme force High pressure systems should be assembled and operated only by personnel who have been trained in proper safety practices WARNING HIGH STRAIN Highly strained materials and parts are potentially hazardous Energy stored in these materials or parts can be released suddenly and with extreme force Highly strained systems should be assembled and operated only by personnel who have been trained in proper safety practices WARNING NOT EXPLOSION PROOF Installation of this instrument in an area requiring devices rated as intrinsically safe is not recommended WARNING VOLTAGE SUPPLY Use only the wall plug in power supply delivered with your PicoSens and verifies that the input voltage and frequency are compatible with the power outlet IMP00045 AccuSens Manual rev1 AccuSens User Manual Opsens inc IMP00045 AccuSens Manual rev1 AccuSens User Manual Table of content Table of contents ee ii tiaa amarinar diaaa seh ln v 1 AccuSens Operating Principles 1 2 Quick Start rase 58a aan 2 2 1 Power supply ie 2 2 Sensor
10. esponding Sensor Type and Gauge Factor s must be entered into the AccuSens non volatile memory Sensor definition and then the defined sensor must be selected Sensor selection on the specific channel These numbers contain the parameterization factors of the sensor that is the sensor type and the sensor calibration parameters These factors are indicated on a label fixed on the optical cable of the sensor nearby the optical connector as indicated on the left figure The label shows the identification number of the sensor used for record purpose only the Gauge Factors GFO GF1 and the Sensor Type The type of the sensors depends of the physical parameter to be measured For the Accusens only temperature can be measured using the Tq type sensor There are also special type definitions that are the N type and the X type which are not related to any specific sensor These are needed for internal calibration purpose only and should be not used unless instructions have been given by Opsens to do so 2 3 1 Define a sensor Before selecting a specific sensor it must be defined that is its corresponding Sensor Type and Gauge Factor must be stored into the non volatile memory of the instrument The following example shows how to define a Tq type temperature sensor Opsens Inc 4 IMP00045 AccuSens Manual rev1 AccuSens User Manual Enter Define Sensor Menu
11. gating 1 between menu items of a given hierarchical level or 2 it allows changing a value being entered 3 1 5 Confirmation button Confirmation button permits confirming 1 a new value being entered 2 confirm the selection of a menu item then moving one hierarchical level lower 3 refreshing displayed value in the case of diagnostic E Left Right arrows allows navigating 1 within the Gauge Factors of a given sensor 3 1 6 Scan Button SCAN O Opsens Inc 8 IMP00045 AccuSens Manual rev1 AccuSens User Manual Pressing this button stop the scanning measurement over all channels and reads only a single channel at full speed The user can select the channel by using the up down left right arrows Pressing the SCAN button once again resumes to the scanning of all enabled channels 3 1 7 Define Button This button is a shortcut that brings the user directly to the menu item for defining the Gauge Factor of a new sensor 3 1 8 Select Button This button is a shortcut that brings the user directly to the menu item for selecting a SEL new sensor being used 3 1 9 Null Button measurement display This button is also used for zeroing a sensor when the system D This button allows to cancel most operations taking place and return directly to the NULL is not within the menu measurement display mode 3 2 Main Menu When the Menu button is pressed the display shows the following submenus e Probes e Setting e Diagnosti
12. luded connector cleaner Use a fresh section of cleaning cloth every time Ask for Opsens Fiber Optic Cleaning Guide for further information on how to clean fiber optic connectors NOTE Always clean the connector ferrule end face with the include connector cleaner before each connection Failure to do so can result in permanent damage to the connector caused by hard particles trapped between the fiber optic end faces NOTE Always replace the protective dust cap on the mating when there is no sensor connected and always replace the protective dust cap on the sensor fiber optic connector when not in used Opsens Inc 2 IMP00045 AccuSens Manual rev1 AccuSens User Manual Figure 2 Remove the protective cap before connecting Figure 3 Always clean the end of the connector ferrule before each connection Figure 4 Engage the sensor connector with the orientation key properly oriented and push until it clicks into place Opsens Inc 3 IMP00045 AccuSens Manual rev1 AccuSens User Manual Figure 5 To disconnect grab the square connector body and just pull 2 3 AccuSens setup The AccuSens is only compatible with Opsens WLPI type SENSOR LABEL Be as es high accuracy temperature sensors Note that the GaAs i en ee type PowerTemp temperature sensors are compatible with Type Tq sensor type either the PowerSens or the PicoPowerSens signal conditioners only To properly use a specific sensor its corr
13. ress the V key use the up down arrow to select OO or OFF and press the V key again 3 4 2 Average The user can set ON or OFF the averaging mode ON by default When on the measurements either displayed on the front panel display output on the analog output or on the RS 232 port is the result of the average of 5 sequential measurements This parameter is not saved and is lost when the system is switched off 3 4 3 Analog output The analog output parameters comprise the scale factor and the offset The scale factor corresponds to the physical unit per Volt unit V output while the offset corresponds to the physical value at which the user wants the analog output to be at zero volt For example one may desire to have 10 C V being offset at 5 C The analog output voltage is thus given by Temperature Voltage output x 10 C V 5 C To change the analog scale and offset for a specific channel first select the proper channel with the up S and down amp buttons then press the confirmation button a O Opsens Inc 10 IMP00045 AccuSens Manual rev1 AccuSens User Manual Then navigate between the Scale and Offset values again with the up down and confirmation buttons Any new scale factor is saved in the non volatile memory This value is used whenever the system is switched on and off By default the offset value is 0 A new offset value is not saved and it is lost when the system is switched off or when the
14. sor contain all the information needed by the AccuSens to perform the conversion from the measurement of the path length difference to the physical value being measured For readers that may need to have a better understanding of the operating principle of the AccuSens we refer to the white paper IMP0002 entitled Opsens White Light Polarization Interferometry Technology available on Opsens web site http www opsens com pdf WLPI pdf Opsens Inc 1 IMP00045 AccuSens Manual rev1 AccuSens User Manual 2 Quick start 2 1 Power supply The AccuSens accepts supply voltage form 12 to 30 Vdc The supply connection is made through the round 2 1 mm power jack outside ground inside positive located on the back panel Figure 1 You can use either the included 12V wall mount power supply or use another power supply Model PowerSens RS 232 connector um ce Analog outputs Power supply connector Figure 1 AccuSens backpanel 2 2 Sensor connection Opsens fiber optic sensors or transducers must me mated to the AccuSens output connectors Figure 2 The optical connectors provided with the AccuSens is usually a square push pull SC type connector mounted with a SC SC type mating Remove the protective cap of the mating engage the sensor connector with the orientation key properly oriented and push until it clicks into its place Always clean the sensor connector prior to connect it to the signal conditioner with the inc
15. the values sent by the serial port Both these settings are not saved and are lost when the system is switched off 3 5 Diagnostic Submenu The user can look through a variety of internal parameters for each optical channel This can be used to diagnostic potential problems with the system or a specific sensor Typical diagnostic parameters are shown below Diagnostic values can be refreshed by Opsens Inc 11 IMP00045 AccuSens Manual rev1 AccuSens User Manual pressing the confirmation button E The channel number can be changed with the up and down amp buttons Parameters Description Lg 2 6V volt Light level Ga 1 3 no unit Amplifier gain Lm 47 Lamp driving level Ct 18 Signal contrast SNR 485 no unit Signal quality The following table shows diagnostic values with good signal poor signal or with a broken sensor fault A fault condition results in a No Signal being displayed Parameter Good signal Poor Signal Fault Lg gt 2 2 lt 2 2 Ga lt 2 0 gt 2 0 Lm lt 90 gt 90 Ct gt 15 lt 15 SNR gt 200 lt 200 lt 100 NOTE Without a sensor connected the instrument shows the message NoS or No Signal on its display In the unlikely situation that this message appears while a sensor is connected to the unit take note of the diagnostic parameters and contact Opsens technical support During a No Signal condition the analog output and the serial por
16. ts output constant values as follow Output No Signal condition output value Analog 0 Volt RS 232 65 536 0 O Opsens Inc 12 IMP00045 AccuSens Manual rev1 AccuSens User Manual 4 Remote operation Opsens AccuSens signal conditioner comes with a RS 232 serial communication interfaces to allow control with a remote computer The RS 232 interface settings are indicated on the following figure Settings Baud rate 9600 y Data bits 8 v Parity Nore y Stop bits h y Flow control None y Figure 12 RS 232 interface setting The serial interface remote control commands are based on the standard SCPI syntax Standard Commands for Programmable Instrumentation The user can create its own remote control software using the various SCPI commands available for the AccuSens But for ease of operation Opsens provides its own control software called SoftSens which gives access to all the functionalities of the instrument See SoftSens user manual for how to remotely control the AccuSens conditioner For those who which to develop their own remote control software ask for Opsens Serial communication user manual to get all the information about serial interfacing with Opsens signal conditioners Opsens Inc 13 IMP00045 AccuSens Manual rev1
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