OMEGA – OME-DB-889D

///OMEGA – OME-DB-889D
  • omega-ome-db-889d

OMEGA – OME-DB-889D

  • Connects Directly to OME-PCI-1800 (H/L), OME-PCI-1802 (H/L), OME-A-822PG, OME-A-8111 with D-Sub 37-Pin Connectors
  • Cold Junction Compensation for Thermocouples, Thermocouple Open Circuit Detection
  • Input Filtering
  • Software Programmable Instrumentation Amplifier Gains of 0.5, 1, 5, 10, 50, 100, 500, 1000
  • Daisy Chain up to 10 OME-DB-889Ds
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Product Description

The OME-DB-889D is an expansion multiplexer/amplifier board for use with OME-PCI-1800 series families. Each OME-DB-889D multiplexes 16 differential analog input channels into one analog input of the DAS board. The high grade instrumentation amplifier provides software programmable gains of 0.5 , 1, 5, 10, 50, 100, 500 and 1000. Thermocouple measurements are handled easily with the OME-DB-889D. The board includes cold-junction sensing and compensation circuitry that provides a scaling of 24.4 mV/°C. Biasing resistors are included for open thermocouple detection. The OME-DB-889D can be cascaded to a total of 128 channels of voltage measurements or 112 channels of thermocouple measurement.

The OME-DB-889D has two 37-pin D-sub connectors and two 20-pin headers. One D-sub connector gets connected to the A/D board’s analog input connector while the other D-sub connector can be used to cascade to another OME-DB-889D multiplexer. The 20-pin header is the multiplexer’s control logic circuit. One of the 20-pin headers is connected to the A/D board’s digital output port via 20-pin flat cable. The other 20-pin header is used to cascade to another OME-DB-889D multiplexer.

Specifications
Accepts Thermocouple Type:

J, K, T, E, S, R, B
Cold Junction Compensation:
+24.4 mV/°C (0.1°C/bit), 0.0 V at 0.0°C
Over Voltage Protection:
±30 V continuous
Common Mode Voltage:
±10 V max
Analog Output Voltage: ±10 V
Power Requirement: +5 V @120 mA
Dimensions:
114 H x 203 mm W (4.5 x 8.0″)
Operating Temperature:
0 to 50°C (32 to 122°F)
Storage Temperature:
-20 to 70°C (-4 to 158°F)
Humidity: 5 to 90% RH non-condensing

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