Instructions for Use MPR1 DATALOGGER
Manufacturer:
RAUMEDIC AG, Hermann-Staudinger-Strasse 2, 95233 Helmbrechts, Germany
Page 22 of 98
3.2.2.3.2 Retention of zero value
In case of nursing measures it may be necessary to sever the connection of the measuring chain on the
pressure catheter or on the MPR1. The pressure catheter remains in the implanted condition. A subsequent
conventional zeroing of the pressure catheter in implanted condition is not possible, however. For this
reason, the zero value of the first zeroing process in non-implanted condition has to be retained. This zero
value saved in the MPR1 will be taken over when the pressure catheter is connected again and when the
“Retention of zero value” option is selected.
Use this option only, if you are well aware of the function of this process.
Use this option only with the same pressure catheter.
3.2.2.3.3 Conventional zeroing
If conventional zeroing is carried out, the output signal of the pressure sensor is declared zero at this point
in time. Frequently external transducers or pressure catheters provide an output signal deviating from zero;
they produce an offset. In case of conventional zeroing, this offset is removed for the current measurement
(internal correction).
Use this option only, if you are well aware of the function of this process.
Please ensure that zero pressure pushes up at the pressure sensor prior to starting conventional
zeroing.
In pressure catheters, conventional zeroing may be carried out in non-implanted condition only.
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