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GE Corometrics 250cx Series Service Manual

GE Corometrics 250cx Series
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Revision C 250cx Series Maternal/Fetal Monitor 4-41
2036947-001
Maintenance: NIBP Calibration and Testing
General Calibration Sequence
Any calibration session consists of a sequence of individual calibration procedures.
The procedures are Calibration Verification, Calibrate Transducers, Overpressure
Detection, and System Leakage.
All NIBP calibration procedures are accessed from the NIBP Calibration screen. To
access the NIBP Calibration screen:
1. Navigate to
Install Screen Options 1.
2. Select Te s ts .
3. Select NIBP Cal.
The sequence of procedures for calibration of NIBP starts with Calibration
Verification. If Calibration Verification shows the NIBP transducers to be out of
calibration then calibration should be performed. Only after NIBP transducers have
been shown to be in calibration should any other test be performed. Both
Overpressure Detection and System Leakage should always be performed.
Calibration Verification
1. Select
Verify
from the
Mode:
option.
2. The monitor will inflate the cuff to approximately 200 mmHg.
3. If either PT1 or PT2 pressure, from the external manometer, are
> = 2 mmHg (0.3 kPa) different from the monitor indicated pressure then
perform Calibrate Transducers procedure.
4. To stop Calibration Verification select Done, which appears after the Verify
softkey has been pressed.
5. The monitor will vent pressure to atmosphere and re-zero the transducers.
Calibrate Transducers
1. Select
Calibrate
from the
Mode:
option.
2. The monitor will inflate the cuff to approximately 200 mmHg (26.7 kPa).
3. Once the pressure has stabilized, enter the pressure from the external
manometer in External:
4. Best accuracy is achieved if the system is given a short time to settle. Best
accuracy is achieved if the system pressure is at or near
200 mmHg (26.7 kPa).
5. Additional pressure can be inserted into the system using a hand bulb.
6. The monitor will vent pressure to atmosphere and re-zero the transducers.
7. Perform a Calibration Verification and repeat Calibration if new calibration
factors still show the transducers out of calibration
8. Commit the new calibration factors by selecting
Store Calibration.

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GE Corometrics 250cx Series Specifications

General IconGeneral
TypeFetal Monitor
Model250cx Series
ManufacturerGE Healthcare
Fetal Heart Rate MonitoringYes
Ultrasound Frequency1 MHz
Recorder Speed1, 2, 3 cm/min
Maternal ParametersECG, NIBP, SpO2
FHR Range30-240 bpm
TOCO Range0-100
ConnectivityRS-232
Power SourceAC Power
DisplayColor LCD

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