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DATAFORTH: SCM5B38-03
DATAFORTH: SCM5B38-03
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Description
Each SCM5B38 Strain Gage input module provides a single channel of strain gage input which is filtered, isolated, amplified, and converted to a high-level analog voltage output (Figure 1). This voltage output is logic switch controlled, which allows these modules to share a common analog bus without the requirement of external multiplexers.The SCM5B modules are designed with a completely isolated computer side circuit which can be floated to ±50V from Power Common, pin 16. This complete isolation means that no connection is required between I/O Common and Power Common for proper operation of the output switch. If desired, the output switch can be turned on continuously by simply connecting pin 22, the Read-Enable pin, to I/O Common, pin 19.
The SCM5B38 can interface to full-bridge or half-bridge transducers with a nominal resistance of 100 Ohm to 10 kOhm. A matched pair of bridge-completion resistors (to ±1mV at +10V excitation) allows use of low cost half-bridge or quarter-bridge transducers (Figures 2, 3, 4). The 10kHz bandwidth allows measurement of high speed processes such as vibration analysis.
Strain gage excitation is provided from the module by a very stable 10V or 3.333V source. The excitation supply is fully isolated, allowing the amplifier inputs to operate over the full range of the excitation voltage. This feature offers significant flexibility in real world applications. Full scale sensitivities of 2mV/V, 3mV/V or 10mV/V are offered as standard. With 10V excitation, this results in ±20mV, ±30mV or ±100mV full scale input range producing ± 5V full scale output.
The input signal is processed through a pre-amplifier on the field side of the isolation barrier. This pre-amplifier has a gain-bandwidth product of 5MHz and is bandwidth limited to 10kHz. After amplification, the input signal is chopped by a proprietary chopper circuit. Isolation is provided by transformer coupling, again using a proprietary technique to suppress transmission of common mode spikes or surges. The module is powered from +5VDC, ±5%.
Special input circuits on the SCM5B38 module provide protection of the signal inputs and the isolated excitation supply up to 240VAC.
Features
- Interfaces to 100 Ohm Thru 10 kOhm, Full-Bridge, Half-Bridge, or Quarter-Bridge Strain Gages
- High-Level Voltage Output
- 1500Vrms Transformer Isolation
- ANSI/IEEE C37.90.1 Transient Protection
- Input Protected to 240VAC Continuous
- Fully Isolated Excitation Supply
- 100dB CMR
- 10kHz Signal Bandwidth
- ±0.03% Accuracy
- ±0.01% Linearity
- ±1µV/°C Drift
- CSA Certified, FM Approved, CE and ATEX Compliant
- Mix and Match SCM5B Types on Backpanel
Block Diagram
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Most of a product’s environmental footprint is created during manufacturing — from CO₂ emissions to water consumption and raw material waste. By giving surplus and demo units a second life, you help cut e-waste, reduce emissions, and save valuable resources.
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Everything You Need to Know Before Buying from Outlecta
FAQs
What kind of products does Outlecta offer?
We specialize in surplus and demo units within HMI, IoT, and measurement technology from trusted industrial brands. All items are fully tested and verified.
Are the products new or used?
Most items are surplus stock, demo equipment, or unused overstock from manufacturers and integrators. They perform like new but come at outlet pricing.
Do products come with a warranty?
Yes — all Outlecta products include a 12-month warranty and a 30-day return policy for peace of mind.
How much can I save compared to buying new?
Customers typically save 30–70% compared to original retail prices, while still getting full industrial quality and performance.
How does buying from Outlecta help the environment?
Extending the lifetime of technology reduces CO₂ emissions, raw material extraction, and e-waste. Every purchase contributes to a more sustainable industry.
Do you provide shipping internationally?
Yes, Outlecta ships worldwide. Delivery times and shipping costs vary depending on location, but we always ensure fast and secure handling.
Can companies sell surplus hardware to Outlecta?
Absolutely. We actively buy surplus and overstock from businesses. Contact us to discuss how we can help you free up capital and reduce waste.
How do I know if a product will fit my application?
Our product descriptions include detailed specifications. If you need support, our team can guide you to the right HMI, IoT, or measurement solution.
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Does Outlecta give back to society?
Yes — every Christmas, a portion of our revenue is donated through our parent company, Telac Elektronik, to Stockholm Stadsmission in support of children in vulnerable situations.
By choosing Outlecta, you help us give technology a second life and bring joy to those who need it most.