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High-gain DC amplifier module for blood pressure, tension, and displacement signal measurement.
The Nihon Kohden AD-631G is a used high-gain DC amplifier module designed for physiological measurement systems. It amplifies low-level signals from transducers used for blood pressure, tension, and displacement monitoring, with output suitable for a recorder or monitor.
This Nihon Kohden biomedical amplifier module is intended for integration with compatible Nihon Kohden equipment racks and transducers. No accessories are included. The unit is sold as-is, and its original performance or functionality may not be fully available due to its used condition.
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With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.
Often, yes. Verified suppliers frequently work with service partners converting the instrument. If applicable, we can list servicing options alongside the offer.
Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.
Two to six weeks, depending on refurbishment scope and whether calibration is included.
We ship to 38 countries. Crating and customs handling are quoted with the instrument.
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Last updated 23 October 2026
1 other listing of this model is available.
