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| DI-5B38-100 Programmable
Strain Gage Signal Conditioner |
Product Highlights
Each DI-5B38-100 programmable strain gage input module
provides a single channel of strain gage input which is
filtered, amplified, and converted to a high level voltage
output. The modules are easily configured using a Windows
based spreadsheet style setup program, which accepts user
inputs and communicates to the modules using a standard
RS-232 serial port. Standard communications ports 1-4
can be used and the baud rate is fixed at 4800. Each module
has a unique serial number stored in EEROM that is used
for addressing up to 64 modules in a system. However,
the serial number is user programmable and can be set
as an alpha-numeric label. Eight and 16-channel backpanels
are available which have the communication circuitry for
interfacing to the modules and multi-dropping multiple
backpanels.
Once configured, the module(s) may be used in the same
backpanel or removed and used in any standard "5B"
backpanel.
The DI-5B38-100 can interface to transducers with a nominal
resistance of 120O to 10KO. Input configurations of full
bridge, half-bridge or quarter bridge can be accommodated
by selecting or de-selecting the internal precision bridge
completion resistors. Strain gage excitation is provided
from the module by a stable 5V source.
The key feature of the DI-5B38-100 module is the remote
programmable balance and gain. The "Balance"
command can be used to offset bridge imbalances and to
provide pedestal offsets up to ±100% span with
16-bit resolution. The "Gain" command can be
used to program the module gain over the wide range from
5 to 2500 with 12-bit resolution. One of four precision
internal shunt calibration resistors with values of 20KO,
40KO, 80KO and 200KO can be selected to simulate a full
scale condition for setting module gain. Additionally,
an external calibration resistor can be selected.
Voltage output can be programmed to values between ±0.5V
and ±5.0V in 0.5V steps. It can also be programmed
to be inverting or non-inverting. Signal filtering is
accomplished with a 5kHz bandwidth single-pole filter
to optimize step response.
When configuring the modules, a Windows spreadsheet-like
software interface is used to enter the configuration
parameters on a channel-by-channel basis. A secondary
spreadsheet is used to list module serial numbers for
channels 1-64. Modules 1-64 are divided into 8 groups
of 8 for localized programmability. Any commands sent
to the modules can be addressed to individual modules,
groups of 8 modules, or to all 64 modules. Among other
things, this allows simultaneous balancing or setting
gain for signal conditioners in specific locations. All
setup information is stored in non-volatile memory on
the module, allowing the modules to be programmed and
installed at a later time. Setup information can also
be saved to a file so modules can be easily returned to
their original configuration or new modules can be programmed
to match previously programmed modules.
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Models & Prices
| Part
Number |
Description |
Price |
Buy
Online |
| DI-5B38-100 |
Programmable Strain Gage Signal Conditioner |
£495 |
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