Preparation; Start-Up - Mettler Toledo InPro 5000 Bedienungsanleitung

10
4

Preparation

4.1

Start-up

The interior body (pH electrode) is ready for calibration.
– On unpacking, check the pH electrode for
mechanical damage. Report any damage imme-
diately to your METTLER TOLEDO supplier.
– Remove the watering cap, cap sleeve, membrane
body and briefly rinse the sensor with de-ionized
water.
– After rinsing, the sensor should only be dapped dry
with a tissue. Do not rub the pH sensitive glass,
since this can lead to electrostatic charging and
sluggish response times.
– Check inside the pH sensitive glass for the presence
of any air bubbles and remove same by gently
swinging in a vertical plane (shaking down as with
a thermometer).
Air
bubbles
Before using the sensor for the first time, make sure that
the interior body (pH electrode) is well fixed into the
steel body. The VP connector must not be rotated in the
shaft. If so, the inner part has to be fixed by tightening
the small hexagonal screw below the connector.
InPro 5000
52 002 465
A
A: pH electrode
with air bubbles:
will not work.
InPro 5000 CO
B: Correct pH electrode
with removed bubbles.
© 09 / 06 Mettler-Toledo AG
Printed in Switzerland
Sensor 12 mm
2
B
Ceramic
diaphragm
pH sensitive
glass