User's Manual

WESROC
®
RMS Industrial CTM - Operation Manual - Independent Technologies, Inc.
72-70-209, Rev. A Page 7 01/18/2017
Installation
Mounting Location
The WESROC
®
RMS Industrial LTE Cellular Tank Monitor (CTM) is designed to be
installed directly on the tank to be monitored. The CTM is connected to the tank gauge by
the tank level sensor and sensor cable. The CTM itself may be attached to the tank with
the supplied mounting magnets or with a mounting bracket. The CTM may also be located
a few feet away from the tank if necessary to improve cellular reception. Versions of the
CTM are available with a longer sensor cable to facilitate mounting the CTM further away
from the tank.
Tank Gauge
The standard CTM is equipped with a hall-effect based tank level sensor. This sensor is
designed to be snapped into a remote ready tank gauge dial. The sensor and dial are part
of the R3D dial and sensor system manufactured by Rochester Gauges. R3D dials are
available for a wide variety of tank and gauge types. The CTM is configurable to work
correctly with all available types. In addition, a version of the CTM is available that has an
in-line connector at the end of sensor cable. This enables the CTM to work on large bulk
tanks with large remote ready dials using the standard sensor manufactured by Rochester
Gauges, or the newer Precision Large Dial Sensor manufactured by Independent
Technologies, Inc.
Cellular Signal
The CTM must be installed in a location served by LTE based cellular service. (The MT-
9104CTMR and MT-9104CTMV model CTMs also support 3G GSM service.) The CTM is
supported by the largest LTE and GSM carriers in the U.S. and Canada, and by a number
of other smaller regional service provider partners.
The CTM has a robust cellular sub-system, but there are limits to the capabilities of the
cellular network in general. As with most wireless technologies, cellular signal reception
can be affected by obstructions such trees, mountainous terrain, buildings, metal
structures, large vehicles parked nearby, etc. In addition, cellular signal reception will be
directly affected by the distance between the CTM and the nearest cellular tower.
The best signal reception will be achieved with a line of sight path between the CTM and
the cellular tower. Obviously, this is rarely the case in the real world, but it should be kept
in mind when selecting a mounting location for the CTM. Elevation can also help; typically
performance will increase as the CTM is raised higher above the ground. The orientation
of the CTM itself will also affect performance. The CTM should be installed upright, and if
possible, with the sensor cable exit from the CTM enclosure pointed AWAY from the
nearest cellular tower.