Impulse 8B50_51 - Manual

For information call 800-444-7644 30
SensorLex ™ 8B Isolated Analog Signal Conditioning Products 8B
8B50/51
Voltage Input Modules, 20kHz Bandwidth
Description
8B modules are an optimal solution for monitoring real-world process signals
and providing high level signals to a data acquisition system. Each 8B50 or 8B51
module isolates, filters and amplifies a voltage input signal and provides an
analog voltage output.
Signal filtering is accomplished with a five-pole filter optimized for time and
frequency response which provides 100dB per decade of rejection above
20kHz. One pole of this filter is on the field side of the isolation barrier for anti-
aliasing, and the other four are on the system side.
A special input circuit on the 8B50 and 8B51 modules 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.
Isolation is provided by optical coupling to suppress transmission of common
mode spikes or surges. The module is powered from +5VDC, ±5%.
The modules are designed for installation in Class I, Division 2 hazardous
locations and have a high level of immunity to environmental noise.
Figure 1: 8B50/51 Block Diagram
Features
• Accepts Millivolt and Voltage Level Signals
• High Level Voltage Outputs
• 1500Vrms Isolation
• ANSI/IEEE C37.90.1 Transient Protection
• Input Protected to 240VAC Continuous
• 100dB CMR
• 20kHz Signal Bandwidth
• ±0.10% Accuracy
• ±0.05% Linearity
• Low Drift with Ambient Temperature
• UL Listing Pending
• Mix and Match Module Types on Backpanel
▲