MonoDAQ MonoDAQ-E-STG – Isolated Strain Gauge Amplifier
MonoDAQ-E-STG – Isolated Strain Gauge Amplifier can aquire data from strain gauges and load cells using any bridge configuration, programmable excitation, and extremely low noise. The MonoDAQ-E-STG even has a 50V range and a current input. Data is transfered over EtherCAT to a PC running powerful and easy-to-use DEWESoft data acquisition software.
Features
Internal bridge completion (quarter & half, 120 & 350ohm)50V to 100mV input voltage ranges20mA current input range (internal shunt)Settable voltage and current excitation (max 400mW)Low noise, high dynamic performance
Applications
Material strain measurementsPrecise weightingStructural load monitoring
Kit Contents
1x MonoDAQ-E-STG1x Passive PoE power injector1x USB-to-12V power supply
Specifications
Analog input specifications
ADC resolution: 24-bitADC type: sigma-deltaMax. sample rate: 1kS/s (upgradable to 40kS/s)Measurement modes: Voltage, Bridge, Potentiometer, Current (internal shunt)Measurement ranges (voltage): 50V, 10V, 1V, 0.1VMeasurement range (current): 20mACoupling: DC, AC 1HzSensor recognition: TEDSSensor disconnect warning: channel goes to overload (Bridge and Potentiometer measurement modes)Isolation: 125Vrms channel to ground isolationFront connector: DSUB9 femaleInput impedance: 1MΩ (50V and 10V range), 20MΩ (1V and 100mV range)Overvoltage protection: 200V (50V and 10V range), 50V (1V and 100mV range)Passband: 0.45 * fsPassband flatness: 0.01dBStopband rejection: -90dBRejection at ADC oversampling frequency: -90dBAlias-free bandwidth: 0.40 * fs-3dB point: 0.49 * fsSlew rate (-10V to +10V at 40kS/s): 0.4V/usVoltage excitation specificationFree programmable level: Unipolar 0 … 24V, Bipolar 0 … 12VAccuracy: ±0.05% ± 2mVDrift: ±50ppm/K ±100μV/KStability 10% to 90% load: <0.01%Current Limit: 42mA (max power: 400mW)Protection: Continuous short to groundCurrent excitation specificationFree programmable level: 0 … 22mABridge specificationBridge connection types: full bridge, ½ bridge, ¼ bridge (3-wire)Bridge ranges: 20…10000mV/VInternal bridge completion (¼ bridge): 120Ω and 350ΩBridge completion accuracy: 0.05%, TCR: 2ppm/KInternal shunt resistor: 100kΩShunt resistor accuracy: 0.1%, TCR: 10ppm/KInput Short, Sensor Offset Adjust: software selectable
ADC resolution: 24-bitADC type: sigma-deltaMax. sample rate: 1kS/s (upgradable to 40kS/s)Measurement modes: Voltage, Bridge, Potentiometer, Current (internal shunt)Measurement ranges (voltage): 50V, 10V, 1V, 0.1VMeasurement range (current): 20mACoupling: DC, AC 1HzSensor recognition: TEDSSensor disconnect warning: channel goes to overload (Bridge and Potentiometer measurement modes)Isolation: 125Vrms channel to ground isolationFront connector: DSUB9 femaleInput impedance: 1MΩ (50V and 10V range), 20MΩ (1V and 100mV range)Overvoltage protection: 200V (50V and 10V range), 50V (1V and 100mV range)Passband: 0.45 * fsPassband flatness: 0.01dBStopband rejection: -90dBRejection at ADC oversampling frequency: -90dBAlias-free bandwidth: 0.40 * fs-3dB point: 0.49 * fsSlew rate (-10V to +10V at 40kS/s): 0.4V/usVoltage excitation specificationFree programmable level: Unipolar 0 … 24V, Bipolar 0 … 12VAccuracy: ±0.05% ± 2mVDrift: ±50ppm/K ±100μV/KStability 10% to 90% load: <0.01%Current Limit: 42mA (max power: 400mW)Protection: Continuous short to groundCurrent excitation specificationFree programmable level: 0 … 22mABridge specificationBridge connection types: full bridge, ½ bridge, ¼ bridge (3-wire)Bridge ranges: 20…10000mV/VInternal bridge completion (¼ bridge): 120Ω and 350ΩBridge completion accuracy: 0.05%, TCR: 2ppm/KInternal shunt resistor: 100kΩShunt resistor accuracy: 0.1%, TCR: 10ppm/KInput Short, Sensor Offset Adjust: software selectable
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