Bioamplifiers and Signal Conditioners
Model 2121 Custom Bioamplifier
The 2121 is a single- or multi-channel portable signal conditioner crafted to your own requirements. You may specify characteristics to suit your application, including number of channels (1-4); signal type for each channel; gain and filtering for each channel; signal display method; input and output connectors; power supply (battery and/or wall-mount transformer); and case/packaging details.
Model 2122 Universal Bioamplifier
The 2122 is a versatile, low-noise (2 microvolts peak-to-peak, DC-100 Hz), general-purpose differential amplifier. It features switch-selectable gain (200 to 10K) and low- and high-frequency filtering. The 2122 includes built-in input signal calibration and standard BNC output connectors. Either a 9V alkaline battery or a wall-mount transformer can supply the power. Subject isolation is available.
Model 2283FT Series Fetrode™ Amplifiers
The 2283FT family of Fetrode™ bioamplifiers is ideally matched to the Fetrode reduced-noise electrode technology to make optimal use of the improved bioelectric signals that Fetrodes can provide. UFI currently offers two different Fetrode amplifier configurations to cover a broad range of bioelectric signal requirements. The two models are the same except for one feature: the 2283FTi includes subject isolation; the 2283FT does not. Both models feature switch-selectable gain and frequency response; both are powered by a 9V battery or optional wall-mount transformer.
Model 2701 BioDerm™ Skin Conductance Meter
The 2701 BioDerm™ is a stand-alone instrument that safely and accurately measures both skin conductance level (SCL) and skin conductance response (SCR). SCL from 0-100 microsiemens (micromhos) is displayed on a built-in LCD, while a BNC output connector is provided for optional downstream, user-provided instruments. Built-in circuitry provides rapid and precise calibration for both the 2701 and any attached data collection equipment. A 9V battery supplies the 2701 BioDerm power; subject isolation is available at modest additional cost.
Model 2991 Impedance Converter
The Model 2991 Impedance Converter offers a way around problems caused by very low signal amplitudes, high source impedances, and vulnerability to power line interference. Instead of trying to measure very small voltage changes, the Model 2991 measures the correlated impedance changes. Whether impedance changes are due to resistance, capacitance, or inductance variations, or more usually, a combination of these, the Model 2991 converts them into DC voltages.
Model 2994D Tetra-polar High-Resolution Impedance Meter (THRIM™)
The THRIM™ is a standalone instrument that may be configured for 1, 2, 3 or 4 channels of impedance sensing. For each channel, a stable crystal-locked, digital-synthesis impedance measurement technique provides four outputs (Ro, Xc, deltaR and dR/dt) with adjustable pulsatile size control. All outputs are subject-isolated, and the wall-mount transformer power supply is isolated from the rest of the circuitry for added subject safety. Both BNC and high-density array output connectors are provided for connection to optional downstream instruments.
RESP1 Impedance Pneumograph
Use the RESP1 to monitor the impedance changes that result from respiration. Place two electrodes across the area of interest to monitor respiration not only in humans, but also in a wide variety of animals. The RESP1 induces a small and safe high-frequency (30KHz) current to flow between the electrodes, then senses the resulting voltage across the same electrodes.
Published references to UFI bioamplifiers and signal conditioners
References to products with individual web pages have links on those pages.