16 Channel Analog Multiplexer

OME-DB-889D

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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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Descrição

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