Fluke Biomedical 2249779, Руководство оператора

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Pneumatic Transducer Tester
Specifications
3
Tester using a Y-connector. Pressure is applied to the system as normal,
usually with a squeeze bulb. The results can be compared between the Tester
and the manometer under test.
Testing Capabilities
Verifying the proper operation of a blood pressure transducer can be a tedious
and time-consuming task. Usually a mercury or water manometer is used to
generate known values of pressure while the transducer's response is
monitored. A malfunctioning transducer shows up when comparing the output
of the manometer versus the output of the transducer. Unfortunately,
manometers can add significant errors themselves, because of the difficulty in
interpreting the liquid level in the column. This affects the calibration of and
subsequent determination of the liquid height.
The critical nature of invasive blood pressure measurement requires a properly
calibrated monitoring system capable of linear operation over a wide range of
pressure levels. Pressures at the catheter tip should be accurately transmitted
through the connective tubing and stopcocks to the transducer-sensing
diaphragm. In a properly operating system, distention of the diaphragm will
generate an output voltage proportional to the applied pressure. Occasionally,
one or more of the elements involved in this process will malfunction causing
inaccurate indications of blood pressure on the monitor. Very often these
errors can be attributed to a transducer with a nonlinear response or shifted
sensitivity.
Specifications
Pressure Measurement Range ............................
±
300 mmHg
Pressure Generation Range ................................
±
300 mmHg
Accuracy ................................................................
±
1 % of reading or
±
1 mmHg (Whichever is
greater)
Temperature Performance
Operating ........................................................... 10
°
to 40
°
C
50
°
to 104
°
F
Storage .............................................................. -20
°
-to 60
°
C
-4
°
to 140
°
F
Overpressure ........................................................ Not to exceed 1000 mmHg
Voltage Requirements .......................................... One 9 V alkaline battery
Battery Life ............................................................ 60 hours continuous use