The Refurbished Grass Instrument Polygraph Differentiator Model 7P20 is a precision biomedical signal processing module designed for use with Grass polygraph systems in physiology, pharmacology, neuroscience and biomedical research laboratories. It is used to differentiate analog physiological signals, allowing researchers to analyze rapid signal changes with improved accuracy during electrophysiological experiments.

The Model 7P20 functions as both a signal differentiator and calibration unit, making it suitable for research involving nerve conduction, muscle physiology, cardiovascular studies, neurophysiology and other laboratory applications. It offers adjustable differentiation rates, calibration outputs and auxiliary signal connections for seamless integration with compatible Grass recording systems.

Professionally refurbished and tested, this instrument provides dependable laboratory performance while offering a cost-effective alternative to purchasing new research equipment.

Applications

The Refurbished Grass Instrument Polygraph Differentiator Model 7P20 is suitable for:

Neurophysiology Research
Electrophysiology Laboratories
Pharmacology Research
Physiology Laboratories
Biomedical Engineering
Muscle Physiology Studies
Nerve Signal Analysis
Cardiovascular Research
Biomedical Signal Processing
University Research Laboratories
Medical Research Institutes
Academic Laboratories

Key Features

Precision signal differentiation
Integrated calibration generator
Adjustable differentiation rate
Ramp calibration output
Single and repeat calibration modes
Auxiliary signal outputs
Monitor output
Analog signal processing
Compatible with Grass polygraph systems
Laboratory-grade electronics
Stable research performance
Durable metal enclosure

Technical Specifications

Specification	Details
Brand	Grass Instrument
Model	7P20
Product Type	Polygraph Differentiator
Function	Signal Differentiator & Calibrator
Signal Processing	Analog
Calibration	Integrated Ramp Calibration
Output Modes	Positive, Negative & Both
Auxiliary Outputs	Available
Monitor Output	Available
Installation	Bench Top
Condition	Refurbished

Instrument Features

High precision analog circuitry
Adjustable volts/second calibration
Differential signal processing
Laboratory research design
Easy front panel controls
Multiple output connectors
Stable calibration performance
High reliability
Long service life
Suitable for continuous laboratory use

Benefits

The Refurbished Grass Instrument Polygraph Differentiator Model 7P20 improves the analysis of physiological waveforms by accurately differentiating analog signals. Researchers can study rapid changes in electrical activity with greater clarity, making it an essential accessory for electrophysiology and biomedical experiments.

Its reliable calibration functions and compatibility with Grass polygraph systems help ensure repeatable and accurate experimental results while reducing equipment costs through professional refurbishment.

Why Choose Refurbished?

Every Refurbished Grass Instrument Polygraph Differentiator Model 7P20 is professionally inspected, cleaned and functionally tested before dispatch. Refurbished laboratory equipment provides dependable performance, significant cost savings and extends the usable life of premium scientific instruments.

Additional Information

This refurbished Grass Instrument Polygraph Differentiator Model 7P20 has been professionally inspected prior to shipment. Connection cables, manuals, accessories and compatible polygraph interfaces may vary depending on stock availability. Buyers should verify compatibility with their existing laboratory systems before purchase.

Refurbished Condition

This is a Refurbished Grass Instrument Polygraph Differentiator Model 7P20. The instrument has been professionally inspected, cleaned and functionally tested to ensure reliable laboratory performance. Power cables, accessories, manuals and compatible interface components may vary depending on stock availability. Buyers should verify compatibility with their existing laboratory system before purchase.

Grass 7P20

Refurbished Grass Instrument Polygraph Differentiator Model 7P20