The new DR7DC strain gage amplifier was developed for simple integration into industrial systems. Fully isolated, the DR7DC is designed to avoid potential ground loop noise problems and is fully EMC compliant. Operating from a supply voltage of 9V to 36V dc, it can easily be configured for outputs of 0 to 10V, + 10V, or 4-20 mA from input signals ranging from 4mV to 10V, providing an ideal solution when integrating industrial load cells and pressure sensors into a control system. The new DR7DC offers shunt calibration with remote operation. Transducer excitation is adjustable from 3 to 10V dc. Non-linearity of 0.02% F.S. is typical and operating temperatures range from -10°C to +60°C. The DR7DC provides an output bandwidth up to 5kHz. The new model complements the successfully established DR7AC version which is suitable for use with inductive sensors such as LVDT displacement devices.


• Compatible with Most full bridge strain gauge transducers • Supply voltage 9V to 36V dc, 120mA typical • Transducer excitation 3 to 10V (user selectable), 100mA maximum • Output details 0 to 10V, 5mA (isolated) • ±10V, 5mA (isolated) • 4-20mA (loop resistance 100 Ohms to 500 Ohms) (isolated) • Signal input range 4mV to 10V • Linearity error ±0.02% F.S. • Electrical output bandwidth 0 to 5k/500/20Hz(user selectable) • Output ripple 5mV peak-to-peak typical / 20uA peak-to-peak typical • Input impedance 10MOhms minimum • Temperature coefficient (combined zero and span) - ±0.003% F.S. /°F minimum • Operating temperature range 14°F to 140°F • Total weight 4.6oz
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