Operation Manual

WESROC Residential LTE Cellular Tank Monitor - Operation Manual
72-70-214, Rev. D Page 11 06/25/2018
NORMAL Mode: (No programming magnets.)
Normal mode is used while the RTM is monitoring the level of the tank. This is the default
operating mode of the RTM once it has been installed. While in this mode, the RTM will
wake up once per minute and measure the level of the tank contents. The RTM will then
go back to sleep or will take the appropriate action if the tank level has changed since the
last measurement. Actions may include starting or ending the qualification of a tank level
event, reporting a tank level event to the Host, or reporting to the Host at a scheduled
report time. While in Normal mode, the RTM is also constantly monitoring itself for any
conditions that may require reporting to the Host. The RTM will also simulate a WESROC
Tank Transmitter and will send ISM radio data packets to a Base Unit while in this mode if
the “Local Display” system configuration parameter has been enabled.
INITIALIZATION Mode: (One programming magnet in INIT position.)
Initialization mode is used for initializing the RTM to a WESROC Base Unit (Base Unit)
before using the Base Unit as a local tank level display device. Once the RTM has been
put into Initialization mode, it will simulate a WESROC Tank Transmitter and will send an
initialization data packet to the Base Unit once every 15 seconds (or sooner if the tank
level changes.) The RTM will time out of Initialization mode and will revert to the Normal
operating mode after 60 minutes. This is done to conserve battery life and to ensure that
the RTM continues reporting to the Host once the installer has left the site. See the
operating manual for the type of Base Unit that you are using for instructions on putting the
Base Unit into Initialization mode.
CONFIGURATION Mode: (One programming magnet in both OFF and INIT positions.)
Configuration mode is used to change one or more of the internal RTM configuration
parameters. When in this mode, system (RTM) or application (tank level) operating
characteristics can be changed using a PDU.
Changes made with a PDU are reported to the Host once the RTM is returned to Normal
mode. If field configuration is enabled in the Host, the Host will store the changes to its
configuration database, and will send the changes back to the RTM to confirm acceptance
of the changes. If field configuration is not enabled in the Host, the Host will overrule the
RTM and will send the previous configuration back to the RTM. The RTM will time out of
Configuration mode and return to Normal mode if it has not received a configuration
command from the PDU for 15 minutes. This is done to conserve battery life and to ensure
that the RTM continues reporting to the Host once the installer has left the site.
Reporting To Host
The RTM reports to the Host on a schedule determined by the Host configuration. The
reporting schedule can range from once per day to once per month. The report interval will
directly affect battery life as the cellular sub-system is the major consumer of power in the
RTM. It is not recommended to leave the RTM configured with a reporting schedule
shorter than weekly as it will shorten battery life and may lead to excessive cellular
data charges.
In addition to scheduled reporting, the RTM will contact the Host to report RTM
configuration changes, and tank level events.