8B38 Strain Gage Input Modules

SKU: 8B38
Category: Signal Conditioning
Manufacturers: Dataforth

Interfaces to 100 Ohm through 2 kOhm Full-Bridge Strain Gages
High-Level Voltage Outputs
100dB CMR
3Hz or 8kHz Signal Bandwidth
±0.05% Accuracy

Excitation Voltage | Signal Bandwidth
Sensitivity
Output Range

from

159,30 €

excl. 19% VAT , plus

From	Unit price
5	169,92 €*
10	162,84 €*
20	159,30 €*

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Description
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Interfaces to 100 Ohm through 2 kOhm Full-Bridge Strain Gages
High-Level Voltage Outputs
1500Vrms Isolation
ANSI/IEEE C37.90.1 Transient Protection
100dB CMR
3Hz or 8kHz Signal Bandwidth
±0.05% Accuracy
±0.02% Linearity
Low Drift with Ambient Temperature

8B modules are an optimal solution for monitoring real-world process signals and providing high-level signals to a data acquisition system. Each 8B38 module isolates, filters, and amplifies a full-bridge strain gage input signal and provides an analog voltage output.

The 8B38 can interface to transducers with a nominal resistance of 100? to 2k?. Bridge excitation is provided from the module with a stable 10.00V or 3.33V source. Full scale sensitivities of 2mV/V and 3mV/V are offered as standard.

The signal filtering is accomplished with a 5-pole filter optimized for time and frequency response which provides 100dB per decade of normal-mode rejection above the filter cutoff frequency. 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 8B38 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 isolation is provided by transformer 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.