Function: Data Logger; Activating, Reading And Deleting Log Books - ProMinent DULCOMETER Assembly And Operating Instructions Manual

Function: Data logger

16 Function: Data logger
Data backup / limited service life
There is a possibility of loss of data
with all types of data storage. Data
loss can be caused by damage to
hardware, software, or unauthorised
access etc. The operator of the
device is responsible for backing up
data, which is recorded by a data
logger. This has to be done in accord‐
ance with the national and interna‐
tional requirements, regulations and
norms applicable to the operator of
the device. Define and document this
data backup in a backup or recovery
plan.
The manufacturer of the device is not
responsible for backup or recovery of
data.
SD cards have only a limited service
life. This service life is based,
for example, on the general ageing of
the SD card and due to the memory
type (Flash Memory) from the funda‐
mentally limited number of write pro‐
cesses. Bear this in mind with your
data backup strategy and ensure that
you regularly use your SD card.
Activating, reading and
16.1
deleting log books
The controller supports the following log
books by default:
Calibration log book
n
Error log book
n
140
Access flap to SD card slot
Always keep the access flap to the
SD card slot closed during operation.
If the access flap is open, extraneous
matter, like dust and moisture, can
enter and cause damage to the con‐
troller.
7.55
-15
0.30
25
Fig. 100: Display showing symbol for the
presence of an SD card (top right)
The data log book (optional)
The data log book is an optional feature.
This option is currently supplied as an
industrial 512MB SD card. Unlike
'consumer' cards, industrial SD cards
have an operating temperature of up to 85
°C and the data is filed twice in the SD
card's memory for security reasons. The
SD card provided has a recording
capacity of around 20 years based on a
recording interval of 10 seconds. SD
cards with a capacity of up to 32 GB can
be used and can therefore record approxi‐
mately 1,280 years.
7.20
0.50
A1177