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| DI-8B35 Linearized
4-wire RTD Input Modules |
Product Highlights
DI-8B modules are an optimal solution for monitoring real-world
process signals and providing high level signals to a
data acquisition system. Each DI-8B35 module isolates,
filters, amplifies, and linearizes a single channel of
temperature input from an RTD and provides an analog voltage
output.
RTD excitation is provided from the module using a precision
current source. Excitation current does not flow in the
input signal leads, which allows RTD measurements to be
made independent of lead resistance. The exciation currents
are small (0.25mA) which minimizes self-heating of the
RTD.
Signal filtering is accomplished with a three-pole filter
optimized for time and frequency response which provides
70dB of normal-mode-rejection at 60Hz. One pole of this
filter is on the field side of the isolation barrier for
anti-aliasing, and the other two are on the system side.
A special input circuit on the DI-8B35 module provides
protection against accidental connection of power-line
voltages up to 240VAC. Clamp circuits on the I/O and power
terminals protect against harmful transients.
The modules are designed for installation in Class I,
Division 2 hazardous locations and have a high level of
immunity to environmental noise.
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Models & Prices
| Part
Number |
Description |
Price |
Buy
Online |
| DI-8B35-01 |
100mV full scale input range |
£102 |
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| DI-8B35-02 |
1V full scale input range |
£102 |
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| DI-8B35-03 |
10V full scale input range |
£102 |
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| DI-8B35-04 |
150V full scale input range |
£102 |
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