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

Description

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)
ITEM IS USED
MISSING SOFTWARE/HARDWARE
YOU ARE PURCHASING ONLY WHAT IS PICTURED
PLEASE REVIEW PICTURES CAREFULLY
The DBK48 module can accommodate up to sixteen 8B
isolated-input signal-cond
itioning 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 DB
K48 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 pl
ug-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 pl
ug-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 requi
res a proper earth ground connection to the chassis
and treatment of adjacent i
nputs 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 s
ecurely screwed on during
use.
Some things to remember
:
•
Properly tighten all chassis screws before system use.
•
Never plug in or unplug potentially hazard
ous 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 ex
posed 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
0519
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Paul Sullivan
Metro CAD, Inc.
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