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DI-8B38 Strain Gauge Amplifier Series

Strain Gage Input Modules for the DI-4718B data logger. Wide/Narrow Bandwidth.

SKU DI-8B38 Series Category Tag

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DI-8B38 Strain Gauge Amplifier. Input Modules with Wide/Narrow Bandwidth for the DI-4718B Data Logger from DATAQ Instruments.

Product Features

  • Provides gain and excitation for strain gage-based transducers (load cells, pressure sensors, torque meters, etc.)
  • Interfaces to 100Ω Thru 2kΩ Full-Bridge Strain Gages (model dependent)
  • High Level Voltage Outputs
  • 1500Vrms Transformer Isolation
  • ANSI/IEEE C37.90.1 Transient Protection
  • Input Protected up to 240VAC Continuous
  • 100dB CMR
  • 3Hz or 8kHz Signal Bandwidth
  • ±0.05% Accuracy
  • ±0.02% Linearity
  • Low Drift with Ambient Temperature
  • Mix and Match Module

Model guide for DI-8B38 Series

  DI-8B38-0x DI-8B38-3x
Input Range: ±10mV to ±100mV
Input Bias Current: ±0.5nA
Input Resistance: Normal: 50MΩ
Power Off: 100kΩ
Overload: 100kΩ
Input Protection: Continuous: 240VAC (240VAC between + and -/+EXC/-EXC terminals. 120VAC between - and +EXC/- EXC terminals and between +EXC and -EXC terminals.)
Transient: ANSI/IEEE C37.90.1
Excitation Output (-x1)
Load Resistance
+3.333V ±2mV
100Ω to 2kΩ
Excitation Output (-2x, -5x)
Load Resistance
+10V ±5mV
300Ω to 2kΩ
Excitation Load Regulation: 15ppm/mA
Excitation Stability: 50ppm/°C
Excitation Protection: 120VAC
CMV, Input to Output: 1500Vrms
Transient, Input to Output: ANSI/IEEE C37.90.1
CMR (50Hz or 60Hz): 120dB
NMR: 100dB per decade above 8kHz
Accuracy: ±0.05% Span (Includes nonlinearity, hysteresis and repeatability)
Nonlinearity: ±0.02% Span
Stability: Offset: ±25ppm/ºC
Gain: ±100ppm/ºC
Offset: ±25ppm/ºC
Gain: ±75ppm/ºC
Noise: Output, 100kHz: 1500µVrms Output, 100kHz: 200µVrms
Bandwidth, -3dB: 8kHz 3Hz
Response Time, 90% Span: 70µs 160ms
Output Range: ±5V
Output Protection: Transient: Continuous Short to Ground
ANSI/IEEE C37.90.1
Power Supply Voltage: +5VDC ±5%
Power Supply Current: 110mA No Exc. Load
150mA Full Exc. Load
Power Supply Sensitivity: ±50ppm/%
Mechanical Dimensions: 28.1mm × 41.9mm × 10.2mm
Operating Temperature: -40ºC to +85ºC
Storage Temperature: -40ºC to +85ºC
Relative Humidity: 0 to 95% Noncondensing
DI-8B38 Specifications DI-8B38 Specifications

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