Measurement Computing DaqScan 2000 Series - Manual (Page 19)

System Applications
In addition to basic applications that make use of a DaqScan model’s built-in I/O, a wide
variety of signal conditioning and expansion options make additional applications possible.
Each of the following sample systems are obtained by using a DaqScan along with one or
more DBK options. The applications, which are only briefly discussed, include:
• High Channel Count Thermocouple Measurements
• High-Isolation Voltage & Thermocouple Measurements
• Isolated Digital I/O
• High Speed Voltage Measurement
• Multifunction I/O
High Channel Count Thermocouple Measurements
When combined with 56-channel DBK90 thermocouple input modules, DaqScan can measure
up to 896 channels of thermocouple (TC) input. Any TC type can be installed into any channel
using standard mini-TC connectors. DBK90’s built-in cold junction compensation (CJC)
coupled with the software’s TC conversion algorithms make temperature measurements easy.
Note that thermocouples are measured at a rate of 1 ms/channel in DBK90 based systems.
High-Isolation Voltage & Thermocouple Measurements
DaqScan units can be combined with DBK207/CJC™ options to create an isolated system
capable of measuring up to 256 channels of voltage, thermocouple, RTD and strain gage
inputs. All input channels can be scanned up to 200 kHz, and are isolated by 500V from other
channels and from system common. Any combination of input signals is possible by selecting
the appropriate 5B signal conditioning module for the DBK207/CJC.
Isolated Digital I/O System
When the DaqScan/2002 is combined with a DBK208 or DBK210, up to 256 channels of
isolated digital I/O are possible, capable of controlling AC or DC voltages up to 250V, or
sensing the presence of AC or DC voltages. All channels are isolated from one another and
from the system by up to 500V. Inputs can be scanned in 16-bit increments at speeds up to
200 Kreadings/s.
High-speed Voltage Measurement System
The DaqScan/2005 can be combined with DBK85 16-channel voltage input modules. This
creates a 5 µs/channel voltage measurement system with up to 256 channels. Each input can
have a range from 156 mV FS to 10V FS, which is programmable on a per-channel basis.
Multifunction I/O System
All of the aforementioned capabilities can be combined into one system, using one
DaqScan/2001 as the heart of the system. Such a DaqScan/2001 system could provide
56 non-isolated TC inputs, 16 isolated voltage inputs, 16 low-voltage inputs, 4 analog outputs,
4 frequency inputs, and 32 isolated discrete high-voltage outputs.
Reference Note:
For information regarding DBK options refer to the DBK Options User’s Manual
(p/n 457-0905). A PDf version of the manual is included on your installation CD.
DaqLab/2000 Series 898095 Device Overviews 2-3