Omega OM-USB-2404-UI, User Manual

Page 1: ...mail info omega com For latest product manuals www omegamanual info OM USB 2404 UI 4 Channel Universal Input USB Data Acquisition Module Shop online at omega com User sGuide Extended Warranty Program...

Page 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...

Page 3: ...brating the OM USB 2404 UI 9 Chapter 3 Functional Details 10 Components 10 Spring terminals 10 Strain relief slot 11 USB connector 11 LED 11 Connecting wires to the spring terminals 11 TEDS sensor con...

Page 4: ...OM USB 2404 UI User s Guide 4 Environmental 19 Mechanical 19 Safety voltages 19 Spring terminal connectors 19 Accessory products 20...

Page 5: ...ing by phone fax or email with specific questions Phone 203 359 1660 Fax 203 359 7700 Email das omega com Hazardous voltages You can connect hazardous voltages to the OM USB 2404 UI device s spring te...

Page 6: ...ll bridge Measurement ranges vary for each type of measurement The device features built in current and voltage excitation The excitation circuit is protected from overcurrent and overvoltage fault co...

Page 7: ...SB 2404 UI User s Guide Introducing the OM USB 2404 UI 7 Functional block diagram OM USB 2404 UI functions are illustrated in the block diagram shown here Figure 1 OM USB 2404 UI functional block diag...

Page 8: ...atic charge If any components are missing or damaged notify Omega Engineering immediately by phone fax or e mail Phone 203 359 1660 Fax 203 359 7700 Email das omega com Installing the software Refer t...

Page 9: ...aution Do not disconnect any device from the USB bus while the computer is communicating with the OM USB 2404 UI or you may lose data and or your ability to communicate with the device If the LED is o...

Page 10: ...terminal in each connector are listed in the table below 6 terminal connector signal names Terminal number Signal name Signal description 1 T TEDS Data 2 T TEDS Common 3 EX HI Positive excitation or...

Page 11: ...s system dependent and may be less than 5 V No external power supply is required LED The LED indicates the device status When connected to a USB port the LED blinks steadily to indicate that the devic...

Page 12: ...erating voltages and information about overvoltage protection Figure 5 Connecting a grounded signal source Figure 6 Connecting a floating signal source Don t connect to signals or use for measurements...

Page 13: ...e OM USB 2404 UI across the HI and LO terminals The current is computed from the voltage that the ADC measures across an internal shunt resistor Voltage and current mode connections are shown in Figur...

Page 14: ...LO terminals These modes source a current which varies based on the resistance of the load between the HI and LO terminals The resulting resistance is calculated from the voltage measurement 2 wire a...

Page 15: ...the shielded cables Each channel has a built in thermistor for cold junction compensation CJC calculations For improved CJC sensor accuracy operate the OM USB 2404 UI in a stable temperature environme...

Page 16: ...h speed 10 ms for all channels Best 60 Hz rejection 110 ms for all channels Best 50 Hz rejection 130 ms for all channels High resolution 500 ms for all channels Conversion time One or more channels in...

Page 17: ...18 120 360 Current 25 mA 0 1 0 6 30 100 4 wire and 2 wire note 1 resistance 10 k 0 1 0 5 120 320 4 wire and 2 wire note 1 resistance 1 k 0 1 0 5 1200 3200 4 wire and 3 wire RTD Pt 1000 0 1 0 5 240 64...

Page 18: ...sistance 10 k 4 1 1 3 0 8 0 3 4 wire and 2 wire resistance 1 k 7 1 1 8 1 2 0 7 4 wire and 3 wire RTD Pt 1000 7 6 1 7 1 1 0 4 4 wire and 3 wire RTD Pt 100 10 8 1 9 1 9 0 9 Quarter bridge 350 5 4 1 0 1...

Page 19: ...le Table 12 Safety specifications Parameter Conditions Specification Channel to earth ground isolation Continuous 250 VAC Measurement Category II Note 3 Withstand 2300 VAC verified by a 5 second diele...

Page 20: ...erminal assignments per input mode Input mode Signal terminals 1 2 3 4 5 6 Voltage T T HI LO Current T T HI LO 4 wire resistance T T EX HI EX LO 2 wire resistance T T HI LO Thermocouple T T HI LO 4 wi...

Page 21: ...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...

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