18-6 DELTA/DELTA XL/KAPPA VF8
18 T
RANSCUTANEOUS BLOOD GAS MONITORING
Replacing Sensor Membranes
Replace the sensor’s membranes once a week for reliable measurements. Sensors last
about one year, whether used or stored (see page C-23 for a information about the
sensor, membrane kits and other accessories).
To replace the membranes
1. Slide the O-ring remover under the O-rings, just above
the arrow on the sensor housing. Turn clockwise to
release both O-rings.
2. Peel off the two membranes.
3. Absorb the old electrolyte solution with the cleaning
paper. Rub the tip of the sensor two or three times to
remove the thin layer of silver that may be on the tpO
2
part of the sensor.
4. Place two drops of electrolyte solution on the sensor
surface (below left). Check that the solution covers the
entire surface and there are no bubbles.
5. Turn the sensor over as shown (below right). Insert the sensor head into the
top of the membrane unit. Press the sensor into the membrane unit. Remove
the sensor from the membrane unit and wipe off any surplus electrolyte with a
soft tissue. The sensor is now ready for calibration.
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