YOKOGAWA DTSXL, User Manual, Page: 281 / 289

< PART – C Operation and Maintenance >
C-28
IM 39J06B40-01EN 14th Edition: May 30, 2022
SEE ALSO
-
For details on restoration of measurement settings, see Section 4.2, “Loading and Saving
Settings,” of the DTSX3000 Distributed Temperature Sensor Guide(IM39J02B40-01EN).
-
For details on restoration of system settings, see Section B11.5, “Backup and Restore.”
IMPORTANT
- When attaching the DTSX3000 to the Base module, ensure that the gasket is
properly in place at the back of the DTSX3000.
- When attaching the DTSX3000 to the Base module, ensure that the SD card is
locked in place at the back of the DTSX3000.

Optical Switch Modules
Optical switch modules may require regular replacement depending on their usage and
installation environment.
Table Recommended Replacement Period
Operating Condition Replacement Period (*2)
Installation
Temperature (*1)
40
°
C and below No replacement required
45
°
C 8 years
50
°
C 7 years
Continuous
operation
15-second measurements 4.7 years
20-second measurements 6 years
30-second measurements 9.5 years
*1: The installation temperature is the average ambient temperature where the optical switch module is installed.
*2: The listed replacement periods represent average values.
Depending on the situation, performance may degrade earlier.
Replace an optical switch module in accordance with its replacement procedure described earlier.