Technical description
18
3.4
Power supply
3.4.1
Internal supply
The device is powered by internal Lithium batteries. Depending on the variant, one or
two batteries can be installed.
The effective lifetime of the batteries strongly depends on which functions are used and
how often they are used.
Using the following settings and under the following conditions a logger can be operated
for up to five years without changing the batteries.
Parameter
Setting
Channel 1
Internal pressure sensor
Channel 2
External sensor; Input signal: Pulse
Channel 3
External sensor; Input signal: Pulse
Channel 4
External sensor; Input signal: Pulse
Log interval
15 min
Event
Number
Data transfer via GSM
Once a day (SMS / e-mail / FTP upload)
Pressure surge recording
Once a day
Alarm events per day
No
When the batteries get low, the logger switches itself off. Measurement data, logged up
to that point, remain safely in the loggers’ memory until the next programming.
Flat batteries can be replaced (see page 85). A set of matching spare batteries is
available from SebaKMT.
3.4.2
External power supply
In order to expand the operating time of the measuring system, the logger can be
supplied by an external energy source.
The logger is connected to this source using the VK 76 connection cable (see page 30).
•
Supply voltage:
12 V
•
Supply current:
approx. 0.5 A (if the GSM function is not used)
approx. 1.5 A (when using the GSM function)
NOTE
Peaks of 4 A can occur.
There is an external rechargeable battery pack available from SebaKMT which can be
connected to the data logger in order to expand the operating time of the measuring
system.The logger is connected to the external battery pack by means of the VK88
connection cable. The 10-pole connector (red) of the cable has to be plugged in the
Battery lifetime
Empty batteries
External rechargeable
battery pack
Summary of Contents for Sebalog D-3
Page 2: ...Consultation with SebaKMT 2...
Page 8: ...Terms of Warranty 8...
Page 26: ...Commissioning the logger 26...
Page 34: ...Connecting the logger and installing it on site 34...
Page 70: ...Programming the logger using the SebaDataView 3 software 70...
Page 78: ...Retrieving and evaluating data 78...
Page 88: ...Changing the battery 88...
