7
MAN-147-0018-A
•
The recording will be made at a sampling rate of 1Hz or one of a selection of
higher frequencies, up to 25Hz.
•
On Multilog2, up to two channels can be used. Each of these must be for a
pressure sensor. The sensors must be allocated to channel 1, or channels 1 & 2.
The recordings can be set to occur either at specific times or in response to various
alarm events or a change in a Status Input (i.e., triggered by a switch output from
external equipment).
2.5.
S
ERVER
I
NTEGRATION
–
S
TORING AND
V
IEWING
D
ATA
The Multilog2 logger includes an interface (referred to as a modem) that provides
access to the internet via the cellular mobile communications network. A SIM card is
used to give access of the network.
Measurement data is initially stored within the logger, until the next call-in time. The
data can then be uploaded to the server using an encrypted format. Typically, the server
used to receive and store the data will be an HWM DataGate server, although other
servers may be used in conjunction with HWM software.
The logger data may be viewed using a viewing portal which has access to the data
stored on the server. (Refer to the relevant user guide for details of how your data
viewer can be used to view the logger data).
Note: Multilog2 loggers supporting WITS protocol behave differently to the above.
These loggers do not use DataGate but communicate with a WITS Master
Station. The data can be viewed only by use of the WITS system.
2.5.1.
D
ATA
G
ATE
S
ERVER
/
D
ATA
V
IEWING
P
ORTALS
When integrated with HWM’s DataGate server, the logger’s measurement data can be
stored centrally and made available to users via a viewing portal (website). The data
storage server can handle receipt and storage of data from a single unit, or from an
entire fleet of loggers.
Viewing Primary Recordings:
The data from your logger(s) can be viewed remotely / graphically by anyone authorised
to do so, with a suitable user account (and password) using a standard web-browser.
HWM has a selection of websites that can be used to view logger data. The best choice
of website depends upon the type of sensors used with the logger.
(For illustration purposes only)
