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DI-8B42 2-Wire Transmitter Interface Amplifier

2-Wire Transmitter Interface Module for the DI-4718B Data Logger.

SKU DI-8B42 Category Tag

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DI-8B42 2-Wire Transmitter Interface Amplifier for the DI-4718B Data Logger from DATAQ Instruments.

Product Features

  • +12VDC Loop Supply
  • Provides Isolation for Non-Isolated 2-Wire Transmitters
  • High Level Voltage Outputs
  • 1500Vrms Transformer Isolation
  • ANSI/IEEE C37.90.1 Transient Protection
  • Input Protected to 40VAC Continuous
  • 100dB CMR
  • 100Hz Bandwidth
  • ±0.05% Accuracy
  • ±0.02% Linearity
  • Low Drift with Ambient Temperature
  • Mix and Match Module Types


Each DI-8B42 module provides power to a current transmitter, then isolates, filters and amplifies the resulting process current input signal and provides an analogue voltage output.

Input Range: 4-20mA
Input Resistance: Normal: 35Ω
Power Off: 35Ω
Input Protection: Continuous: 40VAC
Transient: ANSI/IEEE C37.90.1
Loop Supply Voltage: 12VDC
Loop Supply Protection: 40VAC
CMV, Input to Output: 1500Vrms max
Transient, Input to Output: ANSI/IEEE C37.90.1
CMR (50Hz or 60Hz): 100dB
NMR: 60dB per decade above 100Hz
Accuracy: ±0.05% Span (Includes nonlinearity, hysteresis and repeatability)
Nonlinearity: ±0.02% Span
Stability: Offset: ±25ppm/ºC
Gain: ±75ppm/ºC
Noise: Output, 100kHz: 500µVrms
Bandwidth, -3dB: 100Hz
Response Time, 90% Span: 5ms
Output Range: 0 to +5V
Output Protection: Transient: Continuous Short to Ground
ANSI/IEEE C37.90.1
Power Supply Voltage: +5VDC ±5%
Power Supply Current: 140mA
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-8B42 Specifications DI-8B42 Specifications

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