configure a complete sensor application, you must specify the
catalog numbers for a sensor unit, an output unit, an enclosure and
power source and a
communication cable. Consult the factory for guidance if assistance
is needed to correctly specify the system components.
Sensor Unit - Voltage Only
Voltage ratings are line to line. Specify the catalog number that corresponds
to your BIL and nominal voltage requirements
Voltage Output (VAC)
Note: To complete the Output Unit catalog number, add the
required VA value to each of the three output signal fields of the base
catalog number. If no output signal is required for the second
or third fields use "00" for null value. Valid VA
values are "01" (1.44), "15" and "25"
The Output Unit can be
provided in several different configurations based on the
requirements of customer's specific application:
Voltage Output Signal Formats -
Output signals are available with standard formats of 0-115 or 0-67
VAC and an optional 0-10 VAC. Standard VA is 1.44 but optional
15 and 25 VA are available for the 0-115 and 0-67 outputs. The
1.44 and 15 VA can be provided on all three outputs while the 25 VA
can be provided for up to two outputs only. Other formats may be supported. Please contact
the factory if your device requirements are other than the output
formats offered here.
Inputs/Outputs - The Output Unit accepts up to three voltage
inputs and provides up to three analog voltage outputs. This allows a
single Output Unit to support up to three Sensor Units of the same
or different ratings. Alternately, the input signal from a
single Sensor Unit can be used to provide up to three voltage output signals
for three separate load devices (meters, relays, rtu's, etc.)
Power Source - The Output Unit will operate with customer supplied
24, 48 and 125 VDC or 120 VAC. An optional SEECO supplied 24 VDC
power source complete with batteries, battery charger, and battery testing
mechanism can be provided, which requires customer supplied 120 VAC.
A solar power source can also be supplied for geographically remote
Enclosure - The Output Unit can be provided
complete with an enclosure. The standard enclosure is provided for
most typical applications and is sized to accommodate the output device,
terminal blocks for output signal wiring connections, up to three
circular, MS connectors and power source inputs. A larger enclosure
is available and is sized to accommodate the above material plus the
optional SEECO supplied 24 VDC or solar power source, or other customer
supplied equipment (SEL relays, rtu's, etc.)
Note: To complete the Communication Cable catalog
number, add the required cable length to the base catalog number.
Add leading zeroes where necessary to create a four digit length
value, i.e. a 170 foot linear length would be specified as
Communication from the Sensor Unit to the
Output Unit is digital not analog, providing a maximum cable length of up
to 4,000 feet. The cable length can be specified in 10 foot
increments. One cable is required per Sensor.
The cable has a UV protected black PVC jacket,
which is sunlight resistant, impervious to moisture and vapor penetration
and is suitable for installation in both wet and dry locations. Each
end of the cable is pre-terminated with a circular MS connector for quick
and easy connection to both the Sensor and Output Unit devices.
Cable is suitable for direct burial.