Adjustment and Calibration
28
Handling of Reference Solutions
IBP Medical standard solutions are produced under ISO13485:2003 quality management. They are traceable
to NIST and PTB Standards Reference Materials and are sealed with tamper-evident packaging.
To ensure standard solution and calibration/verification accuracy
•
Keep solutions tightly capped to avoid evaporation
•
Do not return used solutions to the storage bottle
•
Do not remove solutions from their original bottle
•
Keep the solutions in a cool place
•
Use only fresh reference solutions for calibration and verification
•
Use the solution immediately after pouring, evaporation will cause errors
•
Discard solution the appropriate number of days after opening the bottle
•
Discard solution after the expiration date
Adjusting the HDM97
Use these functions only if you are fully aware of their consequences. Wrong
adjustment values will lead to false measurement values and in consequence
these false values may lead to hazards for patients.
The entire procedure is guided by using software, it is not necessary to open the instrument. To invoke the
adjustment menu first select the channel you want to adjust. Then press and hold down the keys
und
at
the same time for at least 5 seconds. If you want to cancel the operation press navigation key
.
Temperature
Temperature adjustment is done using 2 sampling points. The order of the adjustment points is preassigned
and the value range of each point is restricted by boundaries.
Point
Display
Temperature
Boundaries
1.
"TP1"
25.000 °C
±1.500 °C
2.
"TP2"
55.000 °C
±1.500 °C
Normally an adjustment is not necessary because the sensor has no drift.
The temperature sensor must be dipped into a liquid with known temperature. This known temperature must
be adjusted using the navigation keys
and
. It is mandatory to wait until the measuring value
becomes stable. After the measuring value finally becomes stable the adjustment point can be applied using
the navigation key
. The instrument jumps immediately to the next adjustment point, so the procedure
can be repeated. After the last adjustment point has been applied the instrument displays "ADJ OK" in the
upper line of its display. If the adjustment is not correct, the instrument displays "ADJ ERR" in the display
along with a long warning beep. In this case the adjustment values will be discarded and the procedure has to
be started from the beginning. A failed adjustment can also be an outcome of a defective instrument.
