Maintenance Of The Interior Body; Replacement Of The Interior Body; Ism - Mettler Toledo InPro 5000 Bedienungsanleitung

52002465_F_IM_InPro5000i_edf_2022_09.qxp_52002465_F_IM_InPro5000_edf_2022
InPro 5000 (i) CO
6.3 Maintenance of the interior body (pH electrode)
If the pH electrode shows a sluggish response
time and / or insufficient sensitivity the pH sensitive
glass can be reactivated using a HF solution
(p/n 51 319 053). The pH sensitive glass part only
is immersed into this solution for 5 minutes, is then
immediately and thoroughly rinsed with deionized
water and then stored in CO
aphragm for 12 hours. This procedure will make the
electrode faster but will limit the life time hardly.
6.4 Replacement of the interior body (pH electrode)
Typically after 10 – 20 sterilization cycles the pH
electrode should be replaced. Please refer to the
instruction manual of the replacement interior body
InPro 5000 (i).
6.5

ISM

DLI: Dynamic Lifetime Indicator
The DLI provides information about the remaining lifetime
of the interior body. As long as the DLI is above zero days
the system is within the specified accuracy after a cali-
bration. If the DLI is zero the inner body needs to be re-
placed.
Contributing factors for ageing:
• temperature during measurement
• number of CIP cycles
• number of SIP cycles
• number of autoclavings
The DLI is calculated in the following way.
Continuously: With the above parameters an actual
sensor stress is calculated. During the operation the
sensor load is increased. The accumulated sensor load
divided by the elapsed time is the basis of the calcula-
tion of the remaining lifetime.
TTM: Time to Maintenance
The TTM gives an indication when maintenance needs
to be performed. Maintenance includes
1. Electrolyte exchange
2. Cleanig of the inner body
3. Replacement of the membrane body
ACT: Adaptive Calibration Timer
The ACT provides information as to when the next
calibration is required to ensure measurements will re-
main within the specified accuracy. This calculation is
based on the DLI information.
Calibration history
The last four calibrations and the factory calibration
data are stored in the sensor memory. These data can
be read out with a transmitter or with the iSense Asset
Suite software.
The calibration history gives valuable information re-
garding the quality of the calibration and the ageing of
the interior body.
© 09 / 2022 METTLER TOLEDO
Printed in Switzerland
Sensor 12 mm
2
Electrolyte up to the di-
2
InPro 5000 (i)
52 002 465 F
17