LE 5002 Non Invasive Blood Pressure Meter
USER MANUAL
28
12. CHECKING OPERATION
12.1.
PUMP CALIBRATION
The procedure described below is for users to calibrate the pressure value on the
display, which corresponds to the pressure in the cuff at all times.
Proceed as follows:
1.
Connect a manometer to the CUFF input on the front panel.
2.
Turn the device on while holding down the STOP button. This sets it in
calibration mode.
The following message will appear on the display: «
TECHNICAL SERVICE».
Release the STOP button. The last line will show the current internal pressure (in
mmHg).
3.
Press the START button to activate the air pump and then press it again once a
determined pressure value has been reached (e.g. about 200 mmHg). The
pressure value will be displayed briefly on the digital display, as it will
immediately start to fall when the exhaust valve is opened. To stabilise the
reading, remove the cover of the Unit and cover the air output hole with your
finger. The air output hole is located on the bottom of the pressure pump (see
next figure).
Figure 20. Pump valve.
If the difference is greater than 3%, call for technical assistance to solve the problem.
Use the “
STOP” button to release the air inside the system.
4.
Once this process is finished, hold the “
STOP” button down for at least 3
seconds (or switch the apparatus off and back on), and the instrument will be
ready.
This calibration procedure need not be performed frequently, only when there is
doubt as to pressure values. It can also be used to detect leaks in the pneumatic circuit.