Thermocouple Measurement Systems for USB Bus
Contents
1. E 2 1 EE e E 2 1 2 2 Operating Systems for Specific Devices 2 2 M ei RERO 2 2 2 3 1 Microsoft Windows PnP Installation Windows ME 2000 XP 2 2 2 3 2 Linux Installation Kernel 2 4 and later Overview 2 3 24 Applicaton Sotware OO pO RERUM ROTE 2 3 3 U 3 1 31 OMET USB 73 External Application Connectors ENNEN 3 1 3 2 5 lu 3 3 3 2 1 OMET USB 73 DIO Connector DB25 E 3 3 3 2 2 OMET USB 73 Temperature Input DB25 M ENNEN 3 3 3 3 Pin cree 3 4 33 1 Digital Inputs Outputs 7 7 BECH 3 4 1952 orm 3 4 33 3 Analog Ground AGND E 3 4 3 3 4 REENEN 3 4 3 3 5 Temperature Inputs 7 nnne nn nnn nini 3 4 SUME UIS ec 3 4 3 5 COMMCCIO S REDI BAR E Inu v DI Bc On und 3 5 3 6 Application Modules E 3 5 3 6 1 Digital 1 0 Adapter Module 2 NENNEN 3 5 3 6 2 3 6 4 ENEE 4 1 41 Enhanced Application Program Interface AP 4 1 4 2 The Query Command _ trip beige 4 3 Mo Diora PPU m 4 5 Omega Engineering Inc Copyright 2005 www omega com OMET USB 73 Use2. 32 bit signed integer 32 bit signed integer 32 bit signed integer Millidegrees Return Value Thermocouple type Thermocouple channel voltage Ambient temperature in 4 4 6 4 EDR Enhanced Device Object Interface Calc T CmC EDREDevice No support 32 bit signed integer 32 bit signed integer Function Name Object Platform Parameters 32 bit signed integer 32 bit signed integer Millidegrees Return Value Value Thermocouple type Thermocouple channel voltage Ambient temperature in 4 4 6 5 Example of calculating a thermocouple temperature The temperature PSEUDO START Define TYPE_K 1 CJC millideg of type 32 signed integer TC value of type 32 bit signed integer TC millideg of type 32 bit signed integer TC millideg EDRE CalcTCmC TYPE value CJC millideg Print TC millideg PSEUDO STOP Omega Engineering Inc Copyright 2005 www omega com OMET USB 73 User Manual Data Acquisition 5 Calibration Procedure This chapter deals with calibrating your hardware Please follow the instruction carefully to properly calibrate your device 5 1 1 Calibration USB 73 If the USB device needs to be calibrated the software can be found on the EDR Enhanced SDK CD Rom This application provides step by step information of how to calibrate your device Make sure that you have a high precision calibration voltage source This will help to configure your
3. www omega com 2 3 OMET USB 73 User Manual Data Acquisition 3 Hardware Interface The Hardware Interface chapter will discuss all connectors located on the OMET USB 73 products The pin assignments for each connector will also be listed The OMET USB 73 series has connectors for digital UO and temperature I O The OMET USB 73s make use of only one connector type a DB25 male To inter connect to application modules there are adapters modules available A cable is used to connect to these modules Screw terminal modules are also available for quick installations This chapter will also discuss method of hardware operation optional accessories and connectable application modules 3 1 OMET USB 73 External Application Connectors The 058 73 is fitted with various 0825 male connectors The illustrations below show the different box types There are two tier and three tier models Depending on the number of connectors required the box would be either one The OMET USB 73 devices use a standard USB type B connector The side with the power connector is the rear side of the device The pin assignments are the same for all models Figure 3 1 OMET USB 73 Front Side 2 Tier Figure 3 2 OMET USB 73 Front Side 3 Tier Figure 3 3 OMET USB 73 Rear Side 2 Tier Figure 3 4 OMET USB 73 Rear Side 3 Tier Omega Engineering Inc Copyright 2005 www omega com 3 1 OMET USB 73 User Manual Data Acquisition Bottom M Middl
4. CalcCJCmC Object EDREDevice Platform No Parameters Return Value 32 bit signed integer Millidegrees 4 4 6 Calculating Temperature for Thermocouples After the CJC channel and thermocouple channel was read and the CJC value converted to millidegrees the thermocouple temperature can be calculated The thermocouple type thermocouple channel voltage and ambient temperature need to be supplied in order to do this The returned value will be in millidegrees 4 4 6 1 Shared Object and Linked Library Interface Function Name EDRE_CalcTCmC Object Edrapi dll Platform Microsoft Windows Parameters 32 bit signed integer array Thermocouple type 32 bit signed integer array _ Thermocouple channel voltage signed integer array Ambient temperature in Return Value SCH bit signed integer Vale o Millidegrees Omega Engineering Inc Copyright 2005 www omegacom 441 OMET USB 73 User Manual 4 4 6 2 ActiveX Interface Calc T CmC EDREADX Microsoft Windows Function Name Object Platform Related Property Parameters 32 bit signed integer 32 bit signed integer 32 bit signed integer 32 bit signed integer Millidegrees Return Value Value Data Acquisition Thermocouple type Thermocouple channel voltage Ambient temperature in 4 4 6 3 EDR Enhanced Main Object Interface Calc T CmC EDREObject Function Name Object Platform Parameters 32 bit signed integer
5. not exist _ Invalid query code 4 2 1 3 EDR Enhanced Object Interface Function Object EDREObject Platform Parameters 32 bit unsigned integer Serial Number 32 bit unsigned integer Code Parameter Return Value Error Codes Device with serial number does not exist 18 BAD QUERY Invalid query code Omega Engineering Inc Copyright 2005 www omega com 4 3 OMET USB 73 User Manual Data Acquisition 4 2 1 4 EDR Enhanced Device Object Interface Function Object Platform Parameters Query Code Parameter Return Value Error Codes error General failure Device with serial number does not exist EDRE BAD QUERY Invalid query code 4 2 1 5 Query example This example queries the number of devices installed and the serial number of each device PSEUDO START Define APINUMDEV 5 See appendix C for list of query codes NumDevices of type 32 bit integer SerialNumber of type 32 bit integer NumDevices EDRE_Query 0 APINUMDEV 0 For d 0 to NumDevices 1 do SerialNumber EDRE Query 0 APIDEVSN d Next d PSEUDO STOP Omega Engineering Inc Copyright 2005 www omega com 44 OMET USB 73 User Manual Data Acquisition 4 3 Digital Inputs Outputs The table below shows all the assigned ports to each device The digital port makes out an important part of any automated system
6. queried PSEUDO START CJC_channel of type 32 bit integer Do channel EDRE_Query serialnumber 0 Until lt 0 Omega Engineering Inc Copyright 2005 www omega com 4 9 OMET USB 73 User Manual Data Acquisition PSEUDO STOP 4 4 2 2 Read CJC channel To read CJC channel use the EDRE_ADSingle command For further reference on this command see the analog input section The channel must be the CJC channel index The Gain and Range parameter are not used PSEUDO START CJC value of type 32 bit signed integer CJC channel of type 32 bit unsigned integer CJC channel 8 error EDRE ADSingle serialnumber channel 0 0 pointer of value if error print value else print Error reading CJC channel PSEUDO STOP 4 4 3 Types of Thermocouples The EDR Enhanced application program interface supports the conversion of many thermocouple types The table below lists all the supported types Each type has its purpose like wide temperature range or very accurate in a certain range The constant value is used when calculating the temperature Thermocouple Type c C gt W IH Table 4 3 Thermocouple Type Table 4 4 4 Reading a Thermocouple Channel Reading the thermocouple channel is the same as reading an analog channel or CJC channel The channels on the OMET USB 73models are zero indexed If the device is a hybrid that has normal analog ch
7. 1 YEAR CARH WARRANTY Extended Warranty rogram Shop online at e mail info omega com For latest product manuals omegamanual info OMET USB SERIES 8 16 and 32 Channel Thermocouple Measurement Systems for the USB Bus OMEGAnet Online Service Internet e mail omega com info omega com U S A ISO 9001 Certified Canada Servicing North America One Omega Drive P O Box 4047 Stamford CT 06907 0047 TEL 203 359 1660 FAX 203 359 7700 e mail info omega com 976 Bergar Laval Quebec H7L 5A1 Canada TEL 514 856 6928 FAX 514 856 6886 e mail info omega ca For immediate technical or application assistance U S A and Canada Mexico Benelux Czech Republic France Germany Austria United Kingdom ISO 9002 Certified Sales Service 1 800 826 6342 1 800 TC OMEGA Customer Service 1 800 622 2378 1 800 622 BEST Engineering Service 1 800 872 9436 1 800 USA WHEN En Espa ol 001 203 359 7803 e mail espanol omega com FAX 001 203 359 7807 info omega com mx Servicing Europe Postbus 8034 1180 LA Amstelveen The Netherlands TEL 31 0 20 3472121 FAX 31 0 20 6434643 Toll Free in Benelux 0800 0993344 e mail sales omegaeng nl Frystatska 184 733 01 Karvina Czech Republic TEL 420 0 59 6311899 FAX 420 0 59 6311114 Toll F
8. 10 8CH Reed relay module PC 38V IDC10 IDC10 8 TTL Driver module PC 38W IDC20 IDC20 16CH TTL Driver module PC 38X DB25 DB25M F 24CH TTL Driver module IDC20 10020 16CH Opto Isolated inputs PC 43C DB25 DB25F M 24CH Opto Isolated inputs IDC10 IDC10 8CH Opto Isolated inputs Table 5 3 Digital UO Application Modules Omega Engineering Inc Copyright 2005 www omega com IV OMET USB 73 User Manual Data Acquisition C Configuration Constants C 1 Query Codes Description APIMAJOR 1 i Query EDRE API major version number APIMINOR Query EDRE minor version number APIBUILD 3 Query EDRE build version number APIOS 4 Query EDRE API OS type APINUMDEV 5 Query number of devices installed BRDTYPE 10 i Query board s type BRDREV 11 Query board s revision BRDYEAR 12 Query a board s manufactured year BRDMONTH 13 Query a board s manufactured month BRDDAY 14 Query a board s manufactured day BRDSERIALNO 15 Query a board s serial number DRVMAJOR 20 Query a driver s major version number DRVMINOR 21 Query a driver s minor version number DRVBUILD 22 Query a driver s build version number ADNUMCHAN 100 Query number of ADC channel ADNUMSH 101 Query number of samples and hold channels ADMAXFREQ 102 Query maximum sampling frequency ADBUSY 103 i Check if ADC system is busy ADFIFOSIZE
9. 104 Get ADC hardware FIFO size ADFIFOOVER 105 Check for FIFO overrun condition ADBUFFSIZE 106 Check software buffer size ADBUFFOVER 107 Check for circular buffer overrun ADBUFFALLOC 108 Check if software buffer is allocated ADUNREAD 109 Get number of samples available ADEXTCLK 110 Get status of external clock line PCISOFG ADEXTTRIG 111 Get status of external trigger line PCI30FG ADBURST 112 Check if burst mode is enabled ADRANGE 113 Get ADC range DANUMCHAN 200 Query number of DAC channels DAMAXFREQ 201 i Query maximum DAC output frequency DABUSY 202 Check if DAC system is busy DAFIFOSZ 203 Get DAC FIFO size CTNUM 300 Query number of counter timer channels CTBUSY 301 Check if counter timer system is busy DIONUMPORT 400 Query number of digital ports DIOQRYPORT 401 Query a specific port for capabilities DIOPORTWIDTH 402 Get a specific port s width INTNUMSRC 500 Query number of interrupts sources INTSTATUS 501 Queries interrupt system s status INTBUSCONNECT 502 Connect interrupt system to bus INTISAVAILABLE 503 Check if an interrupt is available INTNUMTRIG 504 Check number times interrupted Omega Engineering Inc Copyright 2005 www omega com V OMET USB 73 User Manual Data Acquisition C 2 Error Codes Description EDRE 0 Function successfully EDRE_FAIL 1 Function call failed EDRE_BAD
10. Acquisition 4 2 The Query Command EDRE Query The query API function is used to retrieve useful information about your device Appendix C has a list of query codes that will operate on the OMET USB 73 devices The query function is the most powerful function of the EDR Enhanced and can tell a lot about your device like manufacturing date the serial number bus type revision and device driver version The query function can also supply information about the itself like release version and number of devices installed 4 211 Shared Object and Linked Library Interface Function Name EDRE_Query Object Edrapi dll edrapi so Platform Linux 5d Microsoft Windows Pocket PC 2003 Parameters 32 bit unsigned integer Serial Number 32 bit unsigned integer Query Code Parameter AA M Return Error Error Codes No error General failure Device with serial number does not exist _ Invalid query code 4 2 1 2 ActiveX Interface Function Object EDREUTLX Platform Microsoft Windows Related Property SerialNumber Parameters 32 bit unsigned integer Query Code 32 bit unsigned integer Parameter Return Value Error Codes No error General failure Device with serial number does
11. ET USB OMET USB 73R T8 73R T16 73R T 32 Number of digital channels 24 24 24 Number of 8255 compatible ports 8 bit 3 3 Number of temperature channels 8 16 32 Number of channels 2 4 Analog input resolution 14 bit 14 bit 14 bit Maximum sampling speed 100 Hz 100 Hz 100 Table 1 1 DAQ Temperature Versions 1 4 Software Support The OMET USB 73 series is supported by EDR Enhanced and has an extensive range of examples The software will help you to get your hardware going very quickly It also makes it easy to develop complicated control applications All operating system drivers utility and test software are supplied on the EDR Enhanced CD Rom The latest drivers can also be downloaded from the Eagle Technology website For further support information see the Contact Details section 1 5 Contact Details Omega Engineering Inc 1 Omega Drive P O Box 4047 Stamford CT 06907 USA Telephone 800 848 4286 Fax 203 359 7700 E Mail das omega com Website hito www omega com Omega Engineering Inc Copyright 2005 www omega com 1 3 OMET USB 73 User Manual Data Acquisition 2 Getting Started This chapter describes how to install and configure the OMET USB 73 device for the first time Minimal configuration is necessary almost all settings are done through software 2 1 Package Items The package of items differs by device type Depending on the device type accessori
12. The digital ports are used to control external equipment logically or to monitor logical conditions The digital port can be used to switch high voltage external equipment through controlling external relays and contactors It can also be connected external monitoring circuit that indicates conditions logically XXX USB T TOP M MIDDLE B BOTTOM F FRONT R REAR 2 2 TIER BOX 3 TIER BOX OMET Port Width USB 73 Description Connector Assigned Table 4 1 Digital I O Assigned Ports 4 3 1 Reading the Digital Inputs EDRE DioRead A single call is necessary to read a digital I O port Depending on the interface the result is either passed through a reference parameter or by the returned code The digital I O ports a self managed meaning it will automatically configure as inputs when read from Please note that due to the identity of the digital devices the output ports will looses its output value when the a port is configured differently It s very important to do the appropriate reads and writes to ensure the device is in proper configuration before using it Each interface function is showed separately in the next section 4 311 Shared Object and Linked Library Interface Function Name DioRead Object Edrapi dll edrapi so Platform Linux Microsoft Windows Pocket 2003 Parameters 32 bit unsigned integer Serial Number 32 bit unsigned integer Port Value Retu
13. To connect to the OMET PC43A2 use a standard DB25M F cable Port AB is a standard IDC20 connecter and port A B and C standard IDC10 connecters The OMET PC43A2 can also be used to provide external power to application modules Connect 5 to the external power screw terminal and it will distribute it to all child models through the various connecters The table below shows the pin mappings for the module When externally powered the power indicator will light up Omega Engineering Inc Copyright 2005 www omega com 3 5 Part Port 4 0 7 Figure 3 9 OMET PC43Az2 Digital I O Adapter 3 6 2 Thermocouple Adapter The thermocouple adapter is used to interconnect the OMET USB 73 unit and thermocouple temperature sensors The adapter has cold junction compensation CJC built on which is necessary to make thermocouple connections The CJC needs to be calibrated before being used The illustration below shows the thermocouple adapter The adapter has DB25 female connector that connects directly to the OMET USB 73 unit Care must be taken to only connect to a temperature input connector E EE ww o d In o e Oe www Figure 3 10 Thermocouple Adapter Omega Engineering Inc Copyright 2005 www omega com 3 6 OMET USB 73 User Manual Data Acquisition 4 Software The OMET USB 73 series are supplied with a complete software package called the EDR Enhanced Software Develop
14. USB Serial Interface Endpoint Compliant 5V 1 x Control Transfer Endpoint 1 x Bulk Transfer Endpoint 1 x Interrupt Transfer Endpoint 1 x Isochronous Transfer Endpoint 512kB s Universal Serial Bus Revision 2 0 USB High Speed 480 Mega bit per second USB Serial Interface Endpoint Compliant 5V 1 x Control Transfer Endpoint 1 x Bulk Transfer Endpoint 1 x Interrupt Transfer Endpoint 1 x Isochronous Transfer Endpoint 512kB s Typical Maximum Power Source 400 mA 450 mA External PSU 420 mA 470 mA External PSU 820 mA 870 mA External PSU 096 to 9096 non condensing 0 to 70 25 10 120 Plastic Casing 280g 400g Height 45mm Width 80mm Length 148mm Height 60mm Width 80mm Length 148mm OMET USB 73 User Manual A 6 Power Supplies Input Type Input Range Input Connector Type Power Output Type Output Voltage Maximum Output Current Output Connector Type Regulator Type Location Indicators Omega Engineering Inc Copyright 2005 www omega com Data Acquisition AC 110V 240V Multiple to comply with all international wall sockets 5mm DC plug Switch Mode External Separate Power OMET USB 73 User Manual Data Acquisition B Related Products and Accessories A whole range of external connectable accessories and application modules supports the OMET USB 73 series These modules are easy to connect too and support DINRAIL installations Below is a list of products that are co
15. VI C 3 Digital RE VI aida rU REDE UR DEDERE OSEE EQUO LUE VII Omega Engineering Inc Copyright 2005 www omega com i OMET USB 73 User Manual USB Data Acquisition List of Figures Figure 3 1 OMET USB 73 Front Side Ter 3 1 Figure 3 2 OMET USB 73 Front Side 3 1 nnne nnne nnn 3 1 Figure 3 3 OMET USB 73 Rear Side Tier 3 1 Figure 3 4 OMET USB 73 Rear Side 2 Tier 3 1 Figure 3 5 OMET USB 73 0825 Male Connector leise nnne 3 9 Figure 3 6 OMET USB 73 CORRGCIDIS iuu cc ritenuti ea purus ena toic tac oe 3 4 Figure 3 7 uDAQ Power Connector Pin Aessignment 3 5 Figure 3 8 Tar eM aeree lt 3 5 Figure 3 9 0MET P643A2 Digital e 3 6 Figure 3 10 Thermocouple ele 3 6 Figure 4 1 EDR Enhanced Design Omega Engineering Inc Copyright 2005 www omega com iii OMET USB 73 User Manual USB Data Acquisition List of Tables Table 1 1 uDAQ Temperature 1 3 Table 2 1 USB Operating System Support 2 2 Table 3 1 uDAQ Connectors _ _ 3 2 Table 3 2 OMET USB 73 DIO Connector 25 3 3 Table 3 3 OMETSUSB 73 Input DB25 M EE 3 3 Tabl
16. _FN 2 Invalid function call EDRE BAD SN 3 Invalid serial number EDRE BAD DEVICE A Invalid device EDRE BAD OS 5 Function not supported by operating system EDRE EVENT FAILED 6 Wait on event failed EDRE EVENT TIMEOUT 27 Event timed out EDRE INT SET 8 Interrupt in use EDRE DA BAD RANGE 9 DAC value out of range EDRE AD BAD CHANLIST 10 Channel list size out of range EDRE BAD FREQUECY 11 Frequency out of range EDRE BAD BUFFER SIZE 12 Data passed by buffer incorrectly sized EDRE BAD PORT 13 Port value out of range EDRE BAD PARAMETER 14 Invalid parameter value specified EDRE BUSY 15 System busy EDRE IO FAIL 16 call failed EDRE BAD ADGAIN 17 i ADC gain out of range EDRE BAD QUERY 18 Query value not supported EDRE BAD CHAN 19 Channel number out of range EDRE BAD VALUE 20 Configuration value specified out of range EDRE BAD CT 21 Counter timer channel out of range EDRE BAD CHANLIST 22 Channel list invalid EDRE BAD CONFIG 23 Configuration invalid EDRE BAD MODE 24 Mode not valid EDRE HW ERROR 25 Hardware error occurred EDRE HW BUSY 26 Hardware busy EDRE BAD BUFFER 27 Buffer invalid EDRE REG ERROR 28 Registry error occurred EDRE OUT RES 29 i Out of resources EDRE IO PENDING 30 Waiting I O completion Digital UO Return Query Codes Name Description DIOOUT Port is an outp
17. annels and temperature channels the temperature channels will follow the analog channels As with the reading of the CJC channel the range and gain parameter of the EDRE ADSingle command is not used The example below will read thermocouple channel O PSEUDO START TC value of type 32 bit signed integer error EDRE ADSingle serialnumber 0 0 0 pointer of value if error 0 print value else print Error reading termocpuple channel PSEUDO STOP 4 4 5 Calculating Ambient Temperature After reading the CJC channel the ambient temperature can be calculated The voltage read from the CJC channel must be passed to this conversion function The returned value will be the temperature in millidegrees Omega Engineering Inc Copyright 2005 www omega com 4 10 OMET USB 73 User Manual Data Acquisition 4 4 5 1 Shared Object and Linked Library Interface Function Name EDRE CalcCJCmC Object Edrapi dll Platform a Windows Parameters Return Value 32 bit signed integer Millidegrees 4 4 5 2 ActiveX Interface Function Name CalcCJCmC Object EDREADX Platform Microsoft Windows Related Property Parameters Return Value 32 bit signed integer Millidegrees 4 4 5 3 EDR Enhanced Main Object Interface Function CalcCJCmC Object EDREObject Platform No SE Parameters Return Value 32 bit signed integer Millidegrees 4 4 5 4 EDR Enhanced Device Object Interface Function
18. ch basic sub system and is real easy to learn The EDR Enhanced Application Programming Interface currently support four interface types 1 Shared Object with exported functions via dynamic link library and shared object 2 EDR Enhanced ActiveX package for Windows platform 3 Enhanced Object interface for Linux and Net platform 4 EDR Enhanced Device Object interface for Linux and Net platform The illustration below shows the EDR Enhanced Application Program Interface design The next sections will discuss each sub system s functions separately It will show which functions each type of interface supports and what parameters are used Omega Engineering Inc Copyright 2005 www omegacom j 41 OMET USB 73 User Manual Data Acquisition ee mere EDREAPI Enhanced SEES Application Pragam Interface EDREAdX Shared Object WV Dynamic LinkLiorarg 45 d EDRECIX i E d V w D H EDREO bject 1 ele WA EOR Enhanced Obrect VW L Bost UMPE i 4Interface Drivers Third Ferty Irterfac Diners EDREDevice 5 in J EDR Enhanced Levice Object EN Third Party m Labview veePro Device Interfaces 05 Drees Embedded Seal Driver Embeddad Chant Tesi oint Figure 4 1 EDR Enhanced API Design Omega Engineering Inc Copyright 2005 www omega com 4 2 OMET USB 73 User Manual Data
19. compatible with the current kernel version The source listing on the lt gt should match the directory structure on the target system Drivers can be copied manually to usr src linux kernel source gt drivers edredag The USB driver will also be located here Copy the driver and read the documentation in the same directory to install the driver Also copy the EDR Enhanced shared object and examples This should be located at usr src edre The EDRE source directory contains the source for the API and examples The examples directory has samples program specifically for each device Make sure to install the EDR Enhanced before trying to build the source code The header files are located at usr include edre The header files is also necessary when building the drivers Please consult the Linux documentation for complete instructions 2 4 Application Software OmegaLog The EDR Enhanced Software Development Kit CD Rom comes with OMEGALog OMET for Windows OMEGALog has support for Analog Inputs Analog Outputs Digital I O and Counter Timers It has an oscilloscope function to continuously display incoming analog data a signal generator a power supply temperature logger and a multifunctional chart recorder to sample and control signals analog and digital at preset intervals WaveView can be found on the EDR Enhanced CD Rom at lt OMEGACD gt EDRE APPS WVFW Omega Engineering Inc Copyright 2005
20. d error code will tell if the function passed or not Please note that due to the identity of the digital devices the output ports will looses its output value when the a port is configured differently It s very important to do the appropriate reads and writes to ensure the device is in proper configuration before using it Each interface function is showed separately in the next section 4 3 2 1 gt Shared Object and Linked Library Interface Function Name EDRE DioWrite Object Edrapi dll edrapi so Platform Linux Microsoft Windows Pocket PC 2003 32 bit unsigned integer Serial Number 32 bit unsigned integer Port _32 bitunsigned integer Return Error 32 bit signed integer Eroi Codes fo epee 1 ____ _ General failure E ER BAD SN Device with serial number does not exist 14 EDRE BAD PARAMTER Either the port or value is incorrect Omega Engineering Inc Copyright 2005 www omega com 4 6 OMET USB 73 User Manual Data Acquisition 4 3 2 2 ActiveX Interface Function Name Write Object EDREDioX Platform Microsoft Windows SerialNumber Parameters 32 bit signed integer Port S2 bitsignedinteger Value 4 Return Value 32 bit signed integer Error Codes 0 EDRE ____ EDRE FAIL General failure EDRE BAD SN Device with serial EN EDRE BAD PARAMTER Either t
21. d to be defective it will be repaired or replaced at no charge OMEGA s WARRANTY does not apply to defects resulting from any action of the purchaser including but not limited to mishandling improper interfacing operation outside of design limits improper repair or unauthorized modification This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion or current heat moisture or vibration improper specification misapplication misuse or other operating conditions outside of OMEGA s control Components in which wear is not warranted include but are not limited to contact points fuses and triacs OMEGA is pleased to offer suggestions on the use of its various products However OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA either verbal or written OMEGA warrants only that the parts manufactured by it will be as specified and free of defects OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER EXPRESS OR IMPLIED EXCEPT THAT OF TITLE AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED LIMITATION OF LIABILITY The remedies of purchaser set forth herein are exclusive and the total liability of OMEGA with respec
22. device more accurately 5 1 2 Equipment The following calibration equipment is required to calibrate the analog OMET USB 73 device If the calibration equipment does conform to these specifications it will not be possible to calibrate the device accurately 5 1 2 1 High Precision Voltage Source A high precision voltage source is required to generate input analog voltages The Burster Digistant Typ 4405 is am example of such a device The device is used as standard test equipment to calibrate the uDAQ and Rugged uDAQ device Make sure the device conform to its own calibration requirements and that it is serviced regularly The device requirements are the following Specification Voltage Range to 10V Type Analog Output Relative Accuracy 0 1 of 1 bitin 16384 Accuracy lt 12 uV Table 5 1 Analog Source Requirements 5 1 3 Calibration Procedure USB 73 Install the USB Calibration Software lt EDRECD gt EDRE APPS OMET USB 73 CAL Run the USB Calibration Software Follow the step by step information on screen to tune your device Make sure to save the data to your device Omega Engineering Inc Copyright 2005 www omega com 5 13 OMET USB 73 User Manual Data Acquisition A Specifications A 1 Digital Input Output Characteristics Number of Digital Channels Device Channels Models USB 73 24 Number of Grouped Channels Device PPI Models are USB Channels Compatibilit
23. e T Top Front Rear Device Type 0825 M 25 _ Box Type Digitall O Port Assignment FT 7 OMET USB 73T R8 FT 7 CJCO RT CH8 15 CJC1 FM 7 CJCO i RM CH8 15 CJC1 FT CH16 23 CJC2 RT CH24 31 CJC3 Table 3 1 uDAQ Connectors OMET 73T R32 Omega Engineering Inc Copyright 2005 www omega com 3 2 OMET USB 73 User Manual Data Acquisition 3 2 Pin Assignments 1 13 14 25 Figure 3 5 OMET USB 73 DB25 Male Connector 3 2 1 OMET USB 73 DIO Connector DB25 M The table below shows the pin assignments for the DB25 M digital I O connectors found on the OMET USB 73 devices Pin Name RR 1 PAO 14 2 15 3 PA 16 5 4 17 PA 5 18 PBI 6 2 19 PBS 7 20 8 21 7 9 22 10 PC 23 11 PCA 24 PC5 12 25 7 L13 DGND Table 3 2 OMET USB 73 DIO Connector 0825 M 3 2 2 OMET USB 73 Temperature Input DB25 M The table below shows the pin assignments for the DB25 M temperature input connectors found on the OMET USB 73 device 8 4 12V CJC 12V 7 TCH6 TCH5 4 TCH3 TCH2 TCH1 TCHO SHELL DGND Table 3 3 OMET USB 73 Input 0825 Pi 1 2 3 4 5 6 7 8 9 Omega Engineering Inc Copyright 2005 www omega com 3 3 OMET USB 73 User Manual Data Acquisitio
24. e 4 1 Digital I O Assigned Eegeregie Eegen 4 5 Table 4 2 C Channels Assigned EE 4 9 Table 4 3 Thermocouple Type Table 4 10 leegen 5 13 Tapie 2 General MINI IV Table 5 4 Digital CFL fe re cni IV Table D 1 OMET USB 73 Ordering D nee Ee VII Omega Engineering Inc Copyright 2005 www omega com iV OMET USB 73 User Manual Data Acquisition 1 Introduction The OMET USB 73 products consist of two main types a T and R version The T version is designed for reading thermocouples and the R for reading RTDs The main difference between the two are the fact that the T version can only read voltage levels between 80mV and the version inputs between 2 5V The OMET USB 73 Temperature Input series supports 8 16 and 32 temperature inputs The units come with external adaptors that serve as the connection point for the sensors Each unit also has three DIO ports of eight bits Omega Engineering Inc Copyright 2005 www omegacom 14 OMET USB 73 User Manual Data Acquisition 1 1 Features OMET USB 73 Commercial Version The OMET USB 73 series has some very unique features and are listed below USB Revision 1 1 full speed and 2 0 compliant high speed Powered externally Intel 8255 compatible digital I O ports 14 bit Analog resolution temperature inputs Quick and effortlessly to install ABS plastic
25. eering Inc Copyright 2005 www omega com 3 4 OMET USB 73 User Manual Data Acquisition 3 5 Power Supplies Power Connectors The commercial OMET USB 73 units are supplied with an AC power supply The AC power supply is a wide AC input voltage range type 110V to 250V The AC power supply also contains a universal socket kit which makes it possible to connect to any international power socket The output voltage is 1A maximum The polarity of the output connector must be positive on the outside and negative in the middle There is an indicator light to show of the power is present L Figure 3 7 DAQ Power Connector Pin Assignment Figure 3 8 uDAQ Power Socket 3 6 Application Modules amp Accessories The OMET USB 73 devices support a wide range of standard applications modules These application modules can help to simply or easily duplicate installations that can save allot of time Application modules and accessories come in many forms It has support for digital output control and digital input monitoring for AC and DC 3 6 1 Digital UO Adapter Module OMET PC43A2 The digital adapter module is used to map digital I O ports to a usable form The OMET PC43A2 adapter module makes it possible to connect to application modules such as solid relays modules and optical isolated modules The OMET PC43A2 output the 3 x 8 bit ports A B C into a combination of port A and B and three separate ports A B and C
26. es will be included like power supplies USB cable and third party devices OMET USB 73 unit USB 2 0 compliant peripheral cable Universal power supply software CD Rom or Thermocouple adaptor unit software CD Rom DPE Omega Engineering Inc Copyright 2005 www omega com 2 1 OMET USB 73 User Manual Data Acquisition 2 2 Operating Systems for Specific Devices The USB driver for Windows is a Windows Driver Model type that will run on all modern Windows platforms Linux has it s own driver which is exported as a character device Driver Type i WDM Plug and Play Linux Character Device Windows ME 2000 XP Linux 2 4 and later Table 2 1 USB Operating System Support 2 3 Installation The USB installation is different on each operating system type The installation procedure for each operating system will be discussed separately for Windows Desktop Windows Mobile and Linux 2 3 1 Microsoft Windows PnP Installation Windows ME 2000 XP For the Windows PnP installation you will need a PC that can accept a USB device and that is configured to work with USB devices Depending on the version you will need either USB 1 1 or USB 2 0 Find an open USB port and connect your device with the provide USB cable Also provide power to your device if it is externally powered Only use the provide power cable or power supply LU SBubAL Windows will now detect that a new USB device was attac
27. eters PRESSURE STRAIN AND FORCE WA Transducers amp Strain Gages WA Load Cells amp Pressure Gages lA Displacement Transducers WA Instrumentation amp Accessories FLOW LEVEL WA Rotameters Gas Mass Flowmeters amp Flow Computers WA Air Velocity Indicators WA Turbine Paddlewheel Systems WA Totalizers amp Batch Controllers pH CONDUCTIVITY pH Electrodes Testers amp Accessories lA Benchtop Laboratory Meters G Controllers Calibrators Simulators amp Pumps G Industrial pH amp Conductivity Equipment DATA ACQUISITION WA Data Acquisition amp Engineering Software WA Communications Based Acquisition Systems WA Plug in Cards for Apple amp Compatibles lA Datalogging Systems HA Recorders Printers amp Plotters HEATERS WA Heating Cable WA Cartridge amp Strip Heaters WA Immersion amp Band Heaters WA Flexible Heaters 4 Laboratory Heaters ENVIRONMENTAL MONITORING AND CONTROL WA Metering amp Control Instrumentation lA Refractometers WA Pumps amp Tubing lA Air Soil amp Water Monitors lA Industrial Water amp Wastewater Treatment 4 pH Conductivity amp Dissolved Oxygen Instruments M4248 1005
28. he port or _ value is incorrect 4 3 2 3 EDR Enhanced Main Object Interface Function Name DioWrite Object EDREObject Platform Linux SE Parameters 32 bit unsigned integer Serial Number 32 bit unsigned integer Port _32 bitunsignedinteger Vale Return Value 32 bit signed integer Error Codes 0 EDRE No error 1 EDRE_FAIL General failure E VER BAD SN Device with serial _ number does not exist 14 EDRE_ BAD Either the port or _ value is incorrect 4 3 2 4 EDR Enhanced Device Object Interface OVER DioWrite Object EDREDevice Platform Linux LLL Parameters 32 bit unsigned integer Port 32 bit unsigned integer Value Return Value 32 bit signed integer Error Codes _ EDRE OK General failure Device with serial number does not exist 14 EDRE_ BAD PARAMTER Either the port or value is incorrect Omega Engineering Inc Copyright 2005 www omega com 4 7 OMET USB 73 User Manual Data Acquisition 4 3 8 Query Codes The digital sub system can be queried for the number of ports available and the property of each port The following query codes are relevant to the digital system Description DIONUMPORT 400 Query number of digital 1 0 ports installed DIOQRYPORT 401 Query a specific port for its properties Use PARAM to specify the port 0 DIOOUTPUT Port is outp
29. hed and request driver to be supplied Installing Welcome to the Add Remove Hardware Wizard Click on the next button to start the process This wizard helps you add remove unplug and troubleshoot your hardware This wizard will complete the installation for this device The wizard will now need to be supplied S e USBuDAG with driver files to for your USB device 5 Select the option as indicated and then Search for a suitable driver for my device recommended the next button Only select to specification the location of i The driver is located at 7 lt OMEGACD gt EDRE Drivers WDM USB OMEGA CD Select the next button to install the driver Omega Engineering Inc Copyright 2005 www omega com 2 2 OMET USB 73 User Manual Data Acquisition Completing the Found New Depending on the model the last screen Hardware Wizard Will show that the installation was 9 LISB 30 Analog Input Output Device completed successfully for your particular 2 3 2 Linux Installation Kernel 2 4 and later Overview The Linux installation can be a bit tricky sometimes Make sure that the kernel supports USB devices and that the necessary modules are already loaded or can load on demand Also make sure that all kernel source and header files are installed The Linux driver is available with complete source and it will be best if it is recompiled to be
30. housing 1 2 Operating Systems and API Software The OMET USB 73 has a complete SDK EDR Enhanced Software Development Kit This kit contains a driver for Microsoft Windows and the Linux kernel Please consult OMEGA Engineering for the latest information on which specific operating systems are supported Current Supported Operating System Microsoft Windows 2000 Microsoft Windows Millennium Edition Microsoft Windows XP Microsoft Windows Pocket PC 2003 Linux Kernel 2 4 and later The EDR Enhanced SDK serves as a common application and programming interface for all the units no matter what the communications protocol This single property makes the units easy to program because no knowledge is needed about the specific type of interface It also means that the units can be controlled from the same application without any redevelooment when installing a different device It also increases the life expectancy of the software application The EDR Enhanced SDK comes with complete documentation and examples programs For custom software the API is easy to learn shortening the learning curve It also means that it s quicker to go into production Omega Engineering Inc Copyright 2005 www omega com 1 2 OMET USB 73 User Manual Data Acquisition 1 3 USB 73 Versions The tables below list the various versions that are available 1 3 4 Temperature Input Series Ris RTD e is Thermocouple Feature Me AB OM
31. ment Kit EDRE SDK The SDK is supplied with many operating system drivers an application program interface EDRE API complete documentation and programming examples for most programming languages The software development kit also contains OMEGALog OMET to provide a generic application solution for data capturing and simple process control Third party Interface drivers are also provided for Labview TestPoint and Agilent VEE Pro The Software chapter serves as reference for the EDR Enhanced exported functions It explains how to do common operations to program and control the OMET USB 73 hardware Each supported function is listed for each type of interface The parameters for each function are also listed There are only a few functions so make sure to have a thorough understanding of how to use them 41 EDR Enhanced Application Program Interface EDRE The EDR Enhanced consist of operating system drivers Windows dynamic link libraries Windows ActiveX controls Windows Net components and Linux shared objects EDRE Enhanced API has support for Windows 2000 XP Net and the Linux kernel The EDR Enhanced SDK contains example code to use as reference or starting point for a custom application The examples covers topics such as digital reads and writes and reading the analog inputs The EDRE API hides the complexity of the hardware and makes it really easy to program the OMET USB 73 devices It has functions for ea
32. mpatible with the OMET USB 73 devices They are broken up sub sections to cover each type of application B 1 General Adapters There are general adapters that can be used with the OMET USB 73 devices These modules simple map a cable connector to a screw terminal block Adapter _ Entry Possible Connechr Usage OMET DB25Female DB25M F the main connector to a screw terminal ADPT 2526 Clock This adapter is used to make simple connections to unit OMET IDC 20 IDC 20 connect digital I O port on the OMET 20 2 To connect 8 channels on the PC52A2 OMET IDC 10 IDC 10 For connecting to digital 1 0 ports or analog 910 DB9Female DB9Female channels on the OMET PC43A2 and PC52A2 Also for connecting to the 089 on the serial units Table 5 2 General Adapters B 2 Digital I O Application Modules All Digital application modules are DINRAIL mountable They are supplied with standard cables and are easy to connect too Wide variety is available and care must be taken to select the correct module for the application Adapter Entry Application i PC 37 Series IDC10 IDC10 Opto 22 solid state relay modules IDC20 IDC20 Di 25 51 8 IDC10 IDC10 8 Opto 22 G4 Carrier module PC 38G IDC10 IDC10 SCH Electro Mechanical relay module PC 38H IDC10 IDC
33. n 3 3 Pin Descriptions 3 3 1 Digital Inputs Outputs 7 7 7 These lines are connected to the 3 ports of the 8255 Each port can be configured as either an input or an output 3 3 2 Digital Ground DGND All digital ground signals should be connected to this pin 3 3 3 Analog Ground AGND All analog inputs should be referenced to AGND Do not connect AGND and DGND together This will create ground loops and instability in the hardware 3 3 4 Analog Inputs 15 The analog input channels are connected to the analog input sub system and are used to measure analog voltages These signals are referenced to analog ground AGND 3 3 5 Temperature Inputs 7 Each temperature channel has two input lines for positive and negative However in all temperature applications there are always and external modules for thermocouple or RTD inputs Their user never connects directly to these pins 3 4 Bus Connectors The OMET USB 73 uses a standard USB Type B connector The device is supplied with a USB 2 0 compliant cable When viewing the OMET USB 73 device from the rear the USB B Type connector is located on the right side In the middle are the indicator light and the power connector on the left When the USB device is connected to the PC the USB indicator light will light up indicating that USB bus power is present USB lt EXT PSU o Figure 3 6 OMET USB 73 Connectors Omega Engin
34. please have the FOR NON WARRANTY REPAIRS consult OMEGA following information available BEFORE for current repair charges Have the following contacting OMEGA information available BEFORE contacting OMEGA 1 Purchase Order number under which the product 1 Purchase Order number to cover the COST was PURCHASED of the repair 2 Model and serial number of the product under 2 Model and serial number of the product and warranty and 3 Repair instructions and or specific problems 3 Repair instructions and or specific problems relative to the product relative to the product OMEGA s policy is to make running changes not model changes whenever an improvement is possible This affords our customers the latest in technology and engineering OMEGA is a registered trademark of OMEGA ENGINEERING INC Copyright 2005 OMEGA ENGINEERING INC rights reserved This document may not be copied photocopied reproduced translated or reduced to any electronic medium or machine readable form in whole or in part without the prior written consent of OMEGA ENGINEERING INC Where Do Find Everything Need for Process Measurement and Control OMEGA Of Course Shop online at TEMPERATURE WA Thermocouple RTD amp Thermistor Probes Connectors Panels amp Assemblies WA Wire Thermocouple RTD amp Thermistor lA Calibrators amp Ice Point References IA Recorders Controllers amp Process Monitors IH Infrared Pyrom
35. r Manual USB Data Acquisition 4 3 1 Reading te Digital Inputs EDRE DIOR CAG E 4 5 4 3 2 Writing to the Digital Outputs EDRE _DioWrite sias redi ixi tels bte UE Eb DU DIS EIE 4 6 4 3 3 SIEBEN 4 8 44 Temperature Input erai Epp San TR P nU 4 9 4 4 1 NEE 4 9 4 4 2 scie MET 4 9 4 4 3 TYPES Of eege 4 10 4 4 4 Reading 4 10 4 4 5 Calculating Ambient Klee 4 10 4 4 6 Calculating Temperature for Thermocouples verras asi da RR RH EE 4 11 5 1 5 13 5 1 1 eredi o EE 5 13 5 1 2 ______ 5 13 5 1 3 tere mii E o 5 13 A SPENN CITONS EDU Ee 1 FI GUC S _____________ 2 Temperature ee A 3 BUS TRS ege A 3 1 aa ea AS 3 2 in MA EE 4 Power EE 4 1 11 5 5 1 ii MMC 9 A 6 Welle Related Products and ACCESSOMES EE IV 1 EE IV 2 Digital 1 0 Application Alle TUE IV C Constante Or D COE EUR EE ERR ER V 1 2 zu
36. ree 0800 1 66342 e mail info omegashop cz 11 rue Jacques Cartier 78280 Guyancourt France TEL 33 0 1 61 37 2900 FAX 33 0 1 30 57 5427 Toll Free in France 0800 466 342 e mail sales omega fr Daimlerstrasse 26 D 75392 Deckenpfronn Germany TEL 49 0 7056 9398 0 FAX 49 0 7056 9398 29 Toll Free in Germany 0800 639 7678 e mail info omega de One Omega Drive River Bend Technology Centre Northbank Irlam Manchester M44 5BD United Kingdom TEL 44 0 161 777 6611 FAX 44 0 161 777 6622 Toll Free in United Kingdom 0800 488 488 e mail sales omega co uk It is the policy of OMEGA Engineering Inc to comply with all worldwide safety and EMC EMI regulations that apply OMEGA 15 constantly pursuing certification of its products to the European New Approach Directives OMEGA will add the CE mark to every appropriate device upon certification The information contained in this document is believed to be correct but OMEGA accepts no liability for any errors it contains and reserves the right to alter specifications without notice WARNING These products are not designed for use in and should not be used for human applications OMET USB 73 User Manual USB Data Acquisition Table of Contents 1 luper 1 1 Ll Features OMET USB 73 Rule ERC 1 2 L2 Operating Systems and APT SORA 1 2 MEME LIS CI M 1 3 1 3 1 Temporaire 1 3 MEC ECHT ell 1 3 195 1 3 2
37. rn Error Error Codes No error General failure Device with serial number does not exist 4 3 1 2 ActiveX Interface Function Name Read Object EDREDioX Platform Microsoft Windows Related Property SerialNumber Parameters 32 bit signed integer Port Return Value 32 bit signed long Error Codes gt 0 Value read from No error 1 EDRE FAIL amp _ General failure EDRE BAD SN Device with serial number does not exist Omega Engineering Inc Copyright 2005 www omega com 4 5 OMET USB 73 User Manual Data Acquisition _ 14 EDRE BAD PARAMTER Port value is incorrect 4 3 1 3 EDR Enhanced Main Object Interface Function Name DioRead Object EDREObject Platform Parameters 32 bit unsigned integer Serial Number 32 bit unsigned integer Port Return Value Error Codes No error General failure Device with serial number does not exist Port value is incorrect Function Name DioRead Object EDREDevice Platform Parameters 32 bit unsigned integer Pointer to 32 bit unsigned integer Return Value _ No error General failure Device with serial number does not exist 4 3 2 Writing to the Digital Outputs EDRE DioWrite A single call is necessary to write to a digital UO port Depending on the interface type a port number and value is passed to the function A returne
38. t to this order whether based on contract warranty negligence indemnification strict liability or otherwise shall not exceed the purchase price of the component upon which liability is based In no event shall OMEGA be liable for consequential incidental or special damages CONDITIONS Equipment sold by OMEGA is not intended to be used nor shall it be used 1 as a Basic Component under 10 CFR 21 NRC used in or with any nuclear installation or activity or 2 in medical applications or used on humans Should any Product s be used in or with any nuclear installation or activity medical application used on humans or misused in any way OMEGA assumes no responsibility as set forth in our basic WARRANTY DISCLAIMER language and additionally purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product s in such a manner RETURN REQUESTS INOUIRIES Direct all warranty and repair requests inquiries to the OMEGA Customer Service Department BEFORE RETURNING ANY PRODUCT S TO OMEGA PURCHASER MUST OBTAIN AN AUTHORIZED RETURN AR NUMBER FROM OMEGA S CUSTOMER SERVICE DEPARTMENT IN ORDER TO AVOID PROCESSING DELAYS The assigned AR number should then be marked on the outside of the return package and on any correspondence The purchaser is responsible for shipping charges freight insurance and proper packaging to prevent breakage in transit FOR WARRANTY RETURNS
39. ter must be connected The RTD adapter has build in support for a 1mA and 10mA current source It supports both the two wire and four wire system s Note that the OMET USB 73 units are manufactured for either thermocouples or RTD and cannot be changed by swapping the adapter modules 4 41 Thermocouple Procedure To read a thermocouple channel a sequence needs to be followed The steps below shows what steps to follow the read a thermocouple channel Head CJC channel Calculate ambient temperature Read thermocouple channel Calculate temperature D I9 4 4 2 Reading CJC Channel To be able to read and calculate a thermocouple voltage the CJC channel need to be read This value is used to calculate the cold junction compensation for a thermocouple channel A thermocouple adapter s CJC channel has a circuit that will supply a voltage of 10mV per 1 degree Celsius The CJC channel is read in the same way as a normal analog channel The index of the channel is very important as for a unit can have more than one CJC channel The CJC channel must always be read before reading a number of channels on a thermocouple adapter The table below shows the CJC channel index for a particular type of device XXX USB Devices Channels 7318 Value Assigned 8 73116 73116 73132 R XXX 73132 Table 4 2 CJC Channels Assigned 4 4 2 1 Query the CJC channel index The index of each CJC channel can be
40. ut DIOIN Portis an input DIOINOROUT Port can be configured as in or out DIOINANDOUT Port is an input and an output Omega Engineering Inc Copyright 2005 www omega com VI OMET USB 73 User Manual Data Acquisition D Ordering Information For ordering information please contact Omega Engineering directly or visit our website www omega com Device USp USB Description 11 20 OMET 73T8 v 8 Channel Thermocouple input device OMET 73T16 v 16 Channel Thermocouple input device OMET 73T32 32 Channel Thermocouple input device OMET 73R8 ji v i8Channel RTD input device OMET 73R16 16Channel RTD input device OMET 73R32 v 32 Channel RTD input device Table D 1 OMET USB 73 Ordering Information Omega Engineering Copyright 2002 2004 www omega com WARRANT Y DISCLAIMER OMEGA ENGINEERING INC warrants this unit to be free of defects in materials and workmanship for a period of 13 months from date of purchase OMEGA s WARRANTY adds an additional one 1 month grace period to the normal one 1 year product warranty to cover handling and shipping time This ensures that OMEGA s customers receive maximum coverage on each product If the unit malfunctions it must be returned to the factory for evaluation OMEGA s Customer Service Department will issue an Authorized Return AR number immediately upon phone or written request Upon examination by OMEGA if the unit is foun
41. ut only Port is input only Port is either in or out 3 DIOINANDOUT Portis in and out DIOPORTWIDTH 402 Querya specific port width Use PARAM to specify the port The value returned is the bit width of the port 4 3 3 1 Query number of ports PSEUDO START Dioports of type 32 bit integer Dioport EDRE Query serialnumber DIONUMPORT 0 PSEUDO STOP 4 3 3 2 Query port type Port type can be output input in and out in or out PSEUDO START Port type of type 32 bit integer For p to Dioports 1 do Port type EDRE Query serialnumber DIOQRYPORT p Next p PSEUDO STOP 4 3 3 3 Query port width in bits PSEUDO START Port width of type 32 bit integer For p to Dioports 1 do Port width EDRE Query serialnumber DIOPORTWIDTH p Next p PSEUDO STOP Omega Engineering Inc Copyright 2005 www omega com 4 8 OMET USB 73 User Manual Data Acquisition 4 4 Temperature Input 73 Model The OMET USB 73 has three different basic temperature models The OMET USB 73 is available in an 8 16 and 32 channel model There are eight channels available on a single DB25 male connector and one cold junction compensation CJC channel Only a genuine Eagle Technology thermocouple adapter can be used to interface to the thermocouple inputs This adapter has a build CJC device and is necessary to read thermocouple temperatures The OMET USB 73 temperature units also support RTD inputs If RTDs are used a RTD adap
42. y Intel 82C55 TTL D C Characteristics 8255 Compatible Ports Input Low Voltage Input High Voltage Output High Voltage Output Low Voltage Output Current A 2 Temperature Input Characteristics Number of Channels Device Differential Models are USB SRL BT and Rugged Channels Resolution 14 bits Maximum Update Rate USB 1 1 amp USB 2 0 2 milliseconds Data Transfer USB 1 1 amp USB 2 0 Programmed I O USB Bulk Transfer Input Programmable Ranges Channel Bipolar Input Coupling DC Relative Accuracy 1 LSB Gain x 1 Offset Error 0 305 millivolts Gain x 30 Offset Error 0 011 millivolts Omega Engineering Inc Copyright 2005 www omega com OMET USB 73 User Manual Bus Interface A 3 1 USB 1 1 Bus Type Bus Speed Controller Voltage Endpoints A 3 2 USB 2 0 Bus Type Bus Speed Controller Voltage Endpoints A 4 Power Requirements A 4 1 USB Devices Device OMET USB 73T8 OMET USB 73T16 OMET USB 73T32 Minimum A 5 Environmental Physical A 5 1 USB Relative Humidity Operating Temperature Storage Temperature Housing Type Weight OMET USB 73T8 OMET USB 73T16 Weight OMET USB73 T32 Dimensions OMET USB73 T8 OMET USB 73T16 Dimensions OMET USB 73132 Omega Engineering Inc Copyright 2005 www omega com Data Acquisition Universal Serial Bus Revision 1 1 USB Full Speed 12 Mega bit per second
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