Acromag introduces TT351 load cell and strain gauge signal conditioners | Automation.com

Acromag introduces TT351 load cell and strain gauge signal conditioners

January 132020
Acromag introduces TT351 load cell and strain gauge signal conditioners

January 13, 2020 – Acromag TT351 load cell and strain gauge signal conditioners use software to select from a variety of sensor measurement options.. Software menus help users set the sensor type, bridge configuration, excitation source, filtering level, and input/output ranges. Capabilities let users fine tune scaling of I/O signals, adjust excitation levels, and calibrate the bridge. Universal output supports six ranges including 4-20mA, 0-10V and ±10V. Flexible power accepts a 9-32V DC supply at the terminals and a rail power bus option can supply multiple units from a single connection or establish redundant power. The 17.5mm housing mounts on a DIN rail. Hazardous location approvals, noise immunity, and a -40 to 70°C operating range make these transmitters suitable for use in harsh environments.

The TT351 input circuit allows true 6-wire bridge measurement and includes an adjustable bridge excitation supply (4 to 11V DC) with a remote sense feature. Sense wires ensure the programmed excitation voltage is applied at the sensor and enable lead-wire compensation. The differential input performs true ratiometric conversions for extremely stable measurements that remain accurate over time and temperature. Plus, lead break detection is inherent in the device. Three-way isolation between input, output and power increases safety and noise immunity.

Signal processing capabilities, variable range input, and USB programming make this instrument a suitable strain/load measurement device. A single model can process strain gage, load cell, and millivolt input signals from 1-10mV/V. Initial bridge offsets or forces can be automatically removed with null compensation, tare, and zero balance bridge functions. An internal half-bridge can perform half and quarter bridge completion with precision resistor pairs or bias a floating millivolt input signal. A custom input signal linerarizer function supports up to 25 user defined signal breakpoints. Flexible scaling is independently adjustable on the input and output. To suppress noise effects, users can set a variable digital input filter level or average a number of samples. Shunt calibration tools with a simulation calculator enables rescaling of the transmitter’s indicated strain by modifying software gain and/or the instrument gauge factor. And to test or verify operation, a software diagnostics screen will poll the unit and display measured and computed values.

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