IO TECH DBK-48 DBK48 16 CHANNEL SIGNAL CONDITIONING.4 J TC DATAFORTH 8B47 UNITS

IO TECH / IOTECH
 DBK-48 / DBK48
SN 287840
16 CHANNEL SIGNAL CONDITIONING MODULE

With 4, J type TC DATAFORTH 8B47-02 Modules (These modules are available from Dataforth)
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The DBK48 module can accommodate up to sixteen 8B isolated-input signal-conditioning modules for use with Daq systems. A single cable connects the DBK48 output to the P1 analog input connector on the primary device. One Daq system can support up to 16 DBK48 modules, providing a total of 256 isolated analog input channels. The A/D converter scans the DBK48 channels at the same 5 μs/channel rate that it scans all other channels from DBK series analog expansion and signal conditioning cards. Other features of DBK48 include: *Built-in power supply that operates from 10 to 30 VDC and can power a full complement of 8B modules (even with bridge excitation). *Removable, plug-in screw-terminal blocks for convenient connection of 8B modules. *On-board cold-junction sensing for thermocouple 8B modules. *For each 8B module, 250 V isolation from the system and from other channels. 

Note 1: Only channels 0, 2, 4, 6, 8, 10, 12, and 14 can be connected to excitation. For example, in the above block diagram Channel 0 could be connected to Excitation; Channel 1 could not. 

Note 2: Each channel can accept a plug-in resistor to serve as a current shunt. In the above diagram, Channel 0 has a current shunt installed, Channel 1 does not. Only current-input type modules require the plug-in resistors. The plug-in resistors must be removed for all other module types.  

DBK48 has a 250 VDC isolation specification. This is in a normal environment free of conductive pollutants and condensation. The 250 VDC rating requires a proper earth ground connection to the chassis and treatment of adjacent inputs as potentially hazardous. Input cables must be rated for the isolation potential in use. Line voltage ratings are much lower than the DC isolation values specified due to transients that occur on power lines. Never remove the cover unless all inputs with potentially hazardous voltages are removed. The cover must be securely screwed on during use. Some things to remember: *Properly tighten all chassis screws before system use. *Never plug in or unplug potentially hazardous connections with power applied to any connected equipment. *Never attempt to change 8B modules or remove the cover plate while power is applied to the DBK48. You could short out internally exposed circuits and cause personal injury or equipment damage. *Disconnect power, all equipment, and signal lines from the DBK48 prior to installing 8B modules

MCID 74647

HI,AK,PR subject to FREIGHT surcharge

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