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As part of its extensive family of SensorLex^® 8B isolated analog signal conditioners, Dataforth Corporation of Tucson, AZ, offers the 8B38 strain gage input modules with a choice of 3Hz or 8kHz signal bandwidth.

These modules isolate, filter, and amplify full-bridge strain gage input signals and then provide high-level analog voltage output. Available models provide bridge excitation of 3.333V or 10.000V and can interface to transducers with a nominal resistance of 100 ohms to 2k ohms. Full-scale sensitivities of 2mV/V and 3mV/V are offered as standard.

SensorLex^® 8B38 Features

• ±0.05% Accuracy (Typical)
• ±0.02% Linearity
• 1500Vrms Transformer Isolation & 240Vrms Field-Side Protection
• ANSI/IEEE C37.90.1 Transformer Isolation
• 5-Pole Low-Pass Filtering
  
• Low Drift with Ambient Temperature
• Low Output Noise
• -40°C to +85°C Operating Temperature
• CE Compliant
• Other Agency Approvals Pending
  

The 5-pole filter in the 8B38 is optimized for time and frequency response, which results in greater than 100dB of normal-mode rejection for signal frequencies above the pass-band. In the case of models with 3Hz signal bandwidth, rejection of 60Hz frequency content is greater than 70dB. One pole of the filter is on the field side of the isolation barrier for anti-aliasing purposes and the other four are on the system side.

Download the 8B38 strain gage input module datasheet.

Specific 8B38 Applications

• Any process, industrial or other, that requires precise measurement of strain or pressure; as 8B38 modules have a low drift over time and temperature, they do not add significant measurement error
• Situations where space is at a premium; 8B38 modules provide signal conditioning in the smallest package available on the market
• Vibration analysis in machinery health and other high frequency monitoring applications, using the 8kHz wide bandwidth option
• Monitoring slow varying processes, such as conveyor belt systems, and applications where rejection of high frequency noise is important, using the 3Hz narrow bandwidth option

Measuring only 1.11" x 1.65" x 0.40" (28.1 x 41.9 x 10.2mm), 8B38 signal conditioners are ideal for embedded or portable applications. They are designed for installation in Class I Division 2 hazardous locations and have a high level of immunity to environmental noise. In addition, like all SensorLex^® 8B modules, the 8B38 offers dimensional stability over temperature, chemical resistance, and excellent stability over time; it does not need recalibration.

For additional information, call 800-444-7644 toll-free, email sales@dataforth.com, or visit our website at www.dataforth.com.

About Dataforth Corporation

Since being established in 1984, Dataforth has become a worldwide leader in the design and manufacture of signal conditioning, data acquisition, and data communication products for industrial and institutional markets. The Company offers a broad range of analog and digital I/O modules, data acquisition systems, two-wire transmitters, industrial data modems, and modem systems.