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Содержание OM-USB-TC-AI

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Страница 2: ...6 USA Canada only Tel 203 359 1660 Fax 203 359 7700 e mail info omega com For Other Locations Visit omega com worldwide omega com info omega com The information contained in this document is believed...

Страница 3: ...TC AI 9 Configuring the OM USB TC AI 9 Calibrating the OM USB TC AI 9 Chapter 3 Signal I O Connections 10 Screw terminal pinout 10 Voltage input terminals V0H V0L to V3H V3L 11 Thermocouple input term...

Страница 4: ...cy T0x to T3x 19 Absolute accuracy V0x V3x 20 Settling time V0x V3x 20 Analog input calibration 21 Throughput rate 21 Digital I O 21 Temperature alarms 22 Counter 22 Memory 22 Microcontroller 23 USB 5...

Страница 5: ...ements present information to help you avoid injuring yourself and others damaging your hardware or losing your data bold text Bold text is used for the names of objects on a screen such as buttons te...

Страница 6: ...els are software programmable for different thermocouple types You can take measurements from type J K R S T N E and B thermocouples The voltage input range is software programmable for 10 V 5 V 2 5 V...

Страница 7: ...in the block diagram shown here Figure 1 OM USB TC AI functional block diagram Software features For information on the features of InstaCal and the other software included with your OM USB TC AI refe...

Страница 8: ...position DIP switches to set or interrupts to configure You can connect the OM USB TC AI before or after you install the software and without powering down your computer first When you connect an HID...

Страница 9: ...OM USB TC AI and information regarding installation of that software Please read this booklet completely before installing any software or hardware Unpacking the OM USB TC AI As with any electronic d...

Страница 10: ...isconnect the USB cable from the computer and then reconnect it This should restore communication and the LED should turn back on Configuring the OM USB TC AI All hardware configuration options on the...

Страница 11: ...ew terminals two rows on the top edge of the housing and two rows on the bottom edge Each row has 26 connections Between screw terminals 10 and 11 is the integrated CJC sensor used for thermocouple me...

Страница 12: ...hten screw terminal connections When making connections to the screw terminals be sure to tighten the screw until tight Simply touching the top of the screw terminal is not sufficient to make a proper...

Страница 13: ...are common and are isolated from earth ground If a connection is made to earth ground when using digital I O and conductive thermocouples the thermocouples are no longer isolated In this case thermoc...

Страница 14: ...d DIO0 to DIO7 You can configure each digital bit for either input or output All digital I O lines are pulled up to 5V with a 47 k resistor default You can request the factory to configure the resisto...

Страница 15: ...uration Each alarm controls an associated digital I O channel as an alarm output The input to each alarm is one of the temperature input channels You set up the temperature conditions to activate an a...

Страница 16: ...algorithm automatically corrects for the additional thermocouples created at the terminal blocks by subtracting the calculated cold junction voltage from the analog input s thermocouple voltage measur...

Страница 17: ...unctional Details 16 Power The two 5V terminals are isolated 500 VDC from the USB 5V Caution Each 5V terminal is an output Do not connect to an external power supply or you may damage the OM USB TC AI...

Страница 18: ...o the mode previously set by the user Single ended Vx_H inputs are connected directly to their screw terminal pins Vx_L inputs are disconnected from their screw terminal pins and internally connected...

Страница 19: ...differential channels V0x to V3x Single ended 4 single ended channels Note 1 Internally the OM USB TC AI has four dual channel fully differential A Ds providing a total of eight input channels Note 2...

Страница 20: ...nction compensation and system noise These specs are for one year or 3000 operating hours whichever comes first and for operation of the OM USB TC AI between 15 C and 35 C There is a CJC sensor on the...

Страница 21: ...uts should be placed in the Disabled mode or connected to GND Table 6 Accuracy components All values are Range Gain error of reading Offset error V INL error of range Gain Temperature Coefficient ppm...

Страница 22: ...d by the USB unit is approximately 0 4 seconds Digital I O Table 11 Digital input output specifications Parameter Specification Digital type 5V CMOS Number of I O 8 DIO0 through DIO7 Configuration Ind...

Страница 23: ...led active high output digital I O line goes high when alarm conditions met Enabled active low output digital I O line goes low when alarm conditions met Alarm update rate 1 second Counter Table 13 CT...

Страница 24: ...5 1 V max User 5V output current terminal block pin 21 Bus powered and connected to a self powered hub Note 14 5 mA max Isolation Measurement system to PC 500 VDC min Note 14 This is the total curren...

Страница 25: ...D Reserved Do Not Use 32 V2H V2 voltage input 7 T1H T1 sensor input 33 GND Ground 8 T1L T1 sensor input 34 V1L V1 voltage input 9 GND Ground 35 V1H V1 voltage input 10 RSVD Reserved Do Not Use 36 GND...

Страница 26: ...y OMEGA if the unit is found 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 limite...

Страница 27: ...ity Indicators Turbine Paddlewheel Systems Totalizers Batch Controllers pH CONDUCTIVITY pH Electrodes Testers Accessories Benchtop Laboratory Meters Controllers Calibrators Simulators Pumps Industrial...

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