Dataforth: Strain Gage Input Module

The MAQ20-BRDG1 strain gage input module provides four channels in a compact module that can interface to quarter, half, or full-bridge sensors using either a four- or six-wire connection.

Aw 86813 1508np Dataforth

Part of the MAQ20 data acquisition & control system family, the module interfaces to transducers with a nominal resistance of 100 Ω to 1 kΩ. Four 24-bit data converters provide accurate measurement capability, while anti-alias filtering eliminates signal degradation from environmental noise. The unit has 1500 Vrms input-to-bus isolation; in addition, individual channels have overload and reverse protection on all field terminals to prevent module and system damage due to transient events or inadvertent wiring errors. Signal range, bridge excitation voltage, and sample rate are all user-configurable parameters. Signal bandwidth scales automatically with sample rate. Internal precision shunt calibration resistors and a zero-balance feature compensate for sensor inaccuracy, and internal bridge completion resistors are built-in for use with half-bridge and quarter bridge sensors. Features include ±0.05% accuracy; ±0.02% linearity; 100 dB CMR; shunt-cal resistance, 60, 100, 200 kΩ, external; zero-balance per channel; input protection to 20 Vrms continuous and ANSI/IEEE C37.90.1 transient protection. Operating Temperature is -40 to +85°C.

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