DI-8B32 Analog Current Input Modules
FEATURES
SPECIFICATIONS
Typical at T = +25ºC and +5V Power
A
• Accepts Milliamp Level Signals
• High Level Voltage Outputs
• 1500Vrms Transformer Isolation
• ANSI/IEEE C37.90.1 Transient Pro-
tection
• Input Protected to 30VAC Continu-
ous
• 120dB CMR
DI-8B32
Input Range
0mA to 20mA or 4mA to 20mA
Input Resistance
Normal
Power Off
<50Ω
<50Ω
Input Protection
Continuous
Transient
40VAC
ANSI/IEEE C37.90.1
• 70dB NMR at 60Hz
• ±0.05% Accuracy
• ±0.02% Linearity
• Low Drift with Ambient Temperature
• CSA, FM and CE Certifications
Pending
CMV, Input to Output
Transient, Input to Output
CMR (50Hz or 60Hz)
NMR
1500Vrms max
ANSI/IEEE C37.90.1
120dB
70dB at 60Hz
±0.05% span
Accuracy*
Nonlinearity
±0.02% Span
• Mix and Match Module Types
Stability
Output
Gain
±25ppm/ºC
±50ppm/ºC
DESCRIPTION
Noise
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.
Output, 100kHz
250µVrms
3Hz
Bandwidth, -3dB
Response Time, 90% Span
Output Range
150ms
0 to +5V
Output Protection
Continuous Short to Ground
ANSI/IEEE C37.90.1
Transient
Current to voltage conversion is accom-
plished internal to the module to ensure
high accuracy.
Power Supply Voltage
Power Supply Current
Power Supply Sensitivity
Mechanical Dimensions
+5VDC ±5%
30mA
±25ppm/%
Signal filtering is accomplished with a
three-pole filter optimized for time and
frequency response which provides 70dB
of normal-mode-rejection at 60Hz.
1.11" × 1.65" × 0.40"
(28.1mm × 41.9mm × 10.2mm)
Environmental
Operating Temperature
Storage Temperature
Relative Humidity
-40ºC to +85ºC
-40ºC to +85ºC
0 to 95% Noncondensing
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.
*Includes nonlinearity, hysteresis and repeatability.
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 envi-
ronmental noise.
DATAQ Instruments, Inc.
• 241 Springside Drive • Akron, Ohio 44333 • Tel: 330-668-1444 • Email: support@dataq.com • www.dataq.com
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