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| DI-5B38 Strain Gage
Input Modules |
Product Highlights
Each DI-5B38 strain gage input module provides a single
channel of strain gage input which is filtered, isolated,
amplified, and converted to a high level analog voltage
output. This voltage output is logic-switch controlled,
allowing these modules to share a common analog bus without
the requirement of external multiplexers.
The DI-5B38 module is designed with a completely isolated
computer side circuit which can be floated to ±50V
from power common (pin 16). This complete isolation means
that no connection is required between I/O common and
power common for proper operation of the output switch.
The DI-5B38 can interface to full- or half-bridge transducers
with a nominal resistance of 100O to 10kO. A matched pair
of bridge-completion resistors (to ±1mV at +10V
excitation) allows use of low cost half- or quarter-bridge
transducers. On wide bandwidth modules, the 10kHz bandwidth
allows measurement of high speed processes such as vibration
analysis.
Strain gage excitation is provided from the module by
a very stable 10V or 3.333V source. The excitation supply
is fully isolated, allowing the amplifier inputs to operate
over the full range of the excitation voltage. Full scale
sensitivities of 2mV/V, 3mV/V, or 10mV/V are offered.
With 10V excitation, this results in a ±20mV, ±30mV,
or ±100mV full scale input range.
On wide bandwidth modules, the input signal is processed
through a pre-amplifier on the field side of the isolation
barrier. This pre-amplifier has a gain-bandwidth product
of 5MHz and is bandwidth limited to 10kHz. On all modules,
after the initial field-side filtering, the input signal
is chopped by a proprietary chopper circuit. Isolation
is provided by transformer coupling, again using a proprietary
technique to suppress transmission of common mode spikes
or surges. The module is powered from +5VDC, ±5%.
A special input circuit on the DI-5B38 provides protection
of the signal inputs and the isolated excitation supply
up to 240VAC.
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Models & Prices
| Part
Number |
Description |
Price |
Buy
Online |
| DI-5B38-01 Wide BW |
Input Bridge Type: Full
Input Range: 100
to 10k
Excitation: 3.333V
@ 3mV/V |
£180 |
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| DI-5B38-31 Narrow BW |
Full
100 to 10k
3.333V @ 3mV/V |
£180 |
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| DI-5B38-02 Wide BW |
Full
300 to 10k
10V @ 3mV/V |
£180 |
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| DI-5B38-32 Narrow BW |
Full
300 to 10k
10V @ 3mV/V
|
£180 |
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| DI-5B38-03 Wide BW |
Half
100 to 10k
3.333V @ 3mV/V |
£180 |
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| DI-5B38-33 Narrow BW |
Half
100 to 10k
3.333V @ 3mV/V |
£180 |
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| DI-5B38-04 Wide BW |
Half
300 to 10k
10V @ 3mV/V |
£180 |
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| DI-5B38-34 Narrow BW |
Half
300 to 10k
10V @ 3mV/V |
£180 |
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| DI-5B38-05 Wide BW |
Full
300 to 10k
10V @ 3mV/V |
£180 |
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| DI-5B38-35 Narrow BW |
Full
300 to 10k
10V @ 3mV/V |
£180 |
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| DI-5B38-06 Wide BW |
Full
100 to 10k
3.333V @ 3mV/V |
£180 |
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| DI-5B38-36 Narrow BW |
Full
100 to 10k
3.333V @ 3mV/V |
£180 |
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| DI-5B38-07 Wide BW |
Full
300 to 10k
10V @ 3mV/V |
£180 |
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| DI-5B38-37 DI-5B38-37 |
Full
300 to 10k
10V @ 3mV/V |
£180 |
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