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15. Life time of using parts
15-1. Life time
The parts used in the instrument will have lifetime. It may differ depending to application method and
environmental conditions, the lifetime of each shall be as follows:
Parts name
Application
Rough standard of lifetime
EEPROM
Record of set data
Write to EEPROM, one million times
Electrolytic capacitor
Approx. 10years
(1) EEPROM
When writing is made to EEPROM more than the time of lifetime, you can’t write to the data
anymore, so exchange shall be required.
When using the method descibe below, you may reach the liftime of EEPROM in a short period.
1) The store place for Tare cancellation data and Zero set data is specified as [EEPROM] and high
frequency in use of both data are seen.
2) High frequency in use of re-writing comparative data in RS-232C or optional RS-422/485 in
interface are seen.
(2) Electrolytic capacitor
It may be influenced largely by some applied using condition such as environmental temperature
and so on, but the lifetime shall be for approx. 10 years in normal operating in air conditioned room
and continuous operation.
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