Signal Conditioning Module DI-8B38-05

Levertijd:
3~4 weken
SKU
DI-8B38-05

DI-8B38 Strain Gage Input Module (Wide (8kHz) and Narrow (3Hz) Bandwidth)

● 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
● UL, CSA, FM and CE Certifications Pending
● Mix and Match Modules

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-8B38 module isolates, filters and amplifies a full-bridge strain gage input signal and provides an analog voltage output.

 

The 8B38 can interface to tranducers with a nominal resistance of 100Ω to 2kΩ depending upon the model. Bridge excitation is provided from the module with a stable 10.00V or 3.33V source. Full scale sensitivities of 2mV/V and 3mV/V are offered as standard.

 

Signal filtering is accomplished with a five-pole filter optimized for time and frequency response which provides 100dB per decade of normal-moderejection above the filter cutoff frequency. One pole of this filter is on the field side of the isolation barrier for anti-aliasing, and the other four are on the system side.

 

A special input circuit on the DI-8B38 module provides protection against accidental connection of power-line voltages up to 240VAC. Clamp circuits on the I/O and power terminals protect against harmful transients.

 

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.

Meer informatie
Art.nr.
DI-8B38-05
Fabrikant
Dataq Instruments
Input Range
±20mV
Bandwidth
-3dB 8kHz
Output Range
±5V
Excitation Output
Load Resistance
+10V ±5mV
300Ω to 2kΩ
Input Bias Current
±0.5nA
Input Resistance
Normal 50MΩ
Power Off 100kΩ
Overload 100kΩ
Input Protection
Continuous¹ 240VAC
Transient ANSI/IEEE C37.90.1
¹240VAC between + and -/+EXC/-EXC terminals. 120VAC between - and +EXC/-EXC terminals and between +EXC and -EXC terminals.
Excitation Load Regulation
15ppm/mA
Excitation Stability
50ppm/°C
Excitation Protection
120VAC
CMV
Input to Output 1500Vrms max
Transient
Input to Output ANSI/IEEE C37.90.1
CMR (50Hz or 60Hz)
100dB
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
Noise
Output, 100kHz 1500μVrms
Response Time
90% Span 70μs
Output Protection
Transient ANSI/IEEE C37.90.1 (Continuous Short to Ground)
Power Supply Voltage
+5VDC ±5%
Power Supply Current
110mA No Exc. Load
150mA Full Exc. Load
Power Supply Sensitivity
±50ppm/%
Dimensions
28.1 x 41.9 x 10.2mm
Environmental
Operating Temperature -40ºC to +85ºC
Storage Temperature -40ºC to +85ºC
Humidity 0 to 95% Noncondensing
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