DI-8B32 Analog Current Input Modules FEATURES • Accepts Milliamp Level Signals • High Level Voltage Outputs • 1500Vrms Transformer Isolation • ANSI/IEEE C37.90.1 Transient Protection • Input Protected to 30VAC Continuous • 120dB CMR • 70dB NMR at 60Hz • ±0.05% Accuracy • ±0.02% Linearity • Low Drift with Ambient Temperature • CSA, FM and CE Certifications Pending • Mix and Match Module Types DESCRIPTION DI-8B modules are an optimal solution for monitoring real-world process signals and providing high level signals to a data acquisition system. Each DI-8B32 module isolates, filters and amplifies a process current input signal and provides an analog voltage output. Current to voltage conversion is accomplished internal to the module to ensure high accuracy. Signal filtering is accomplished with a three-pole filter optimized for time and frequency response which provides 70dB of normal-mode-rejection at 60Hz. One pole of this filter is on the field side of the isolation barrier for anti-aliasing, and the other two are on the system side. A special input circuit on the 8B32 module provides protection against accidental connection of power-line voltages up to 30VAC. Isolation is provided by optical coupling to suppress transmission of common mode spikes or surges. The module is powered from +5VDC, ±5%. The modules are designed for installation in Class I, Division 2 hazardous locations and have a high level of immunity to environmental noise. SPECIFICATIONS Typical at TA = +25ºC and +5V Power DI-8B32 Input Range Input Resistance Input Protection CMV, Input to Output Transient, Input to Output CMR (50Hz or 60Hz) NMR Accuracy* Nonlinearity Stability 0mA to 20mA or 4mA to 20mA Normal Power Off <50Ω <50Ω Continuous Transient 40VAC ANSI/IEEE C37.90.1 1500Vrms max ANSI/IEEE C37.90.1 120dB 70dB at 60Hz ±0.05% span ±0.02% Span Output Gain Noise Output, 100kHz Bandwidth, -3dB Response Time, 90% Span Output Range Output Protection Transient Power Supply Voltage Power Supply Current Power Supply Sensitivity Mechanical Dimensions Environmental Operating Temperature Storage Temperature Relative Humidity ±25ppm/ºC ±50ppm/ºC 250µVrms 3Hz 150ms 0 to +5V Continuous Short to Ground ANSI/IEEE C37.90.1 +5VDC ±5% 30mA ±25ppm/% 1.11" × 1.65" × 0.40" (28.1mm × 41.9mm × 10.2mm) -40ºC to +85ºC -40ºC to +85ºC 0 to 95% Noncondensing *Includes nonlinearity, hysteresis and repeatability. DATAQ Instruments, Inc. • 241 Springside Drive • Akron, Ohio 44333 • Tel: 330-668-1444 • Email: [email protected] • www.dataq.com DI-8B32 Analog Current Input Modules Block Diagram Ordering Information Model Number DI-8B32-01 DI-8B32-02 Input Range 4mA to 20mA 0mA to 20mA Output Range 0V to +5V 0V to +5V 241 Springside Drive Akron, Ohio 44333 330-668-1444 Data Acquisition Product Links (click on text to jump to page) Data Acquisition | Data Logger | Chart Recorder | Thermocouple | Oscilloscope The information on this data sheet is subject to change without notice. DATAQ and the DATAQ logo are registered trademarks of DATAQ Instruments, Inc. All rights reserved. Copyright © 2005 DATAQ Instruments, Inc.