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Superior Research
The HPA can be used with virtually any type of pressure transducer. A modern
ultra-low-volume transducer with displacement of only 0.023 nanoliters per
mmHg can be provided, permitting low-noise measurements even in small animals
such as mice and young rats which are often the preferred models of human
disease.
Advanced Technology
Other pressure-measuring systems are inadequate for high-grade measurements
of intraventricular pressure slopes in the rat or mouse heart, and are even
questionable for slope measure-ments in the hearts of larger animals such
as dogs, sheep and pigs.
In addition, other systems, whether they have been "digitized" or
still consist of analog stripchart recorders, require extensive labor-intensive
steps to analyze the raw data. The Digi-Med HPA provides variables of heart
function instantaneously and automatically.
The portable units feature push-button balance and calibration, and automatic
recognition by the Digi-Med System Integrator software.
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Specifications
Dimensions: 5.75 in high, 10 in wide, 9.5 in deep, incl. cable clearance.
Weighs under 9 lb.
Pressure Range: -50 to 350 mmHg.
Frequency Response: 45 cycles/sec after amplification of microvoltages from
transducer, followed by microprocessor sampling at 1,000 points/sec and front
panel display at half-sec intervals.
Balance & calibration: Push-button with analyzer retention of factors even
when turned off and unplugged.
Warranty: One-year limited warranty.
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Options
Transducer Package: TXD-310 fixed-dome transducer, holder and 13-ft exten-sion
cable with excitation from analyzer at +2.5 volts DC and ultra-low compli-ance
of 0.023 nanoliters per mmHg.
Cardiovascular System Integrator: Software, plug-in board and cables
to link one or more analyzers in a computerized multi-channel system.
Analog Output Package: Internal circuitry and 10-ft shielded cable to output
instantaneous pressure as an analog 0-to-10 volt signal to an analog recorder
or CRT oscilloscope.
Printer: 80-column thermal printer and cable.
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