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Electro
Industries developed and owns the patent
rights to Accu-Measure Technology. Accu-Measure
is a digital DSP based calculation technique
utilizing high-speed and high-resolution
data acquisition hardware to capture incoming
Voltage and Current signals and calculate
all power parameters. Using these algorithms,
the monitor will attain accuracies rivaling
most reference equipment. The biggest problem
faced with this design is that most Utility
companies do not posses equipment accurate
enough to verify the full range of the meter.
Typical
Accuracy at 0.01%
Extensive
testing reveals that this unit's Watt/hr
readings provide an astounding 0.01% typical
accuracy. Moreover, the unit maintains a
similar repeatability over many tests. The
unit is specified at 0.04%-0.06% for Watt/hr
readings. However, typical accuracy is much
more precise.
High
Performance at a Low Cost
This
unit's design concept was to create a power
meter that not only provided superior technology,
but also relied on a low manufacturing and
component cost. Our design team of engineers
painfully met these criteria.
Using
Accu-Measure technology, we are able to pass
our savings for premier technology to our
customers. The Nexus power monitor is competitively
priced breaking down industry cost barriers.
Using this power monitor often results in
no additional cost to a customer. It is
even competitive with our own existing metering
technology!!!
Auto-Calibration
with Temperature Compensation
1PPM
Reference is the Heart of Auto-calibration
An
important feature in the Nexus power monitor
is the auto-calibration technique associated
with the unit. The Nexus uses an internal reference
accurate to 1PPM. Periodically, every 6 hours
more specifically, the Nexus will switch to
the reference and recalibrate all internal
circuitry. In this manner, we are assured that
the unit always maintains its accuracy. A calibration
takes less than 6 cycles to perform. Calibration
is conducted on all channels simultaneously.
Temperature
Deviation has no Effect on Accuracy
Temperature
is another major factor affecting accuracy.
In addition to periodic calibration, the unit
will also fine-tune itself by auto-calibrating
on every temperature change of more than 1.5
degrees Celsius.
On-board
Time of Use Recording
TOU
at No Additional Cost
The
unit offers onboard TOU recording stored internally
in the Nexus' onboard memory. Most vendors
charge additional for TOU monitoring capability.
With Nexus, it's in there. It even ships in
the basic module with no trending memory.
Advanced
TOU Implementation
The
Nexus has one of the most advanced implementations
of TOU available. The following features are
included:
- 20
Year Calendar
- 8
Tariff Registers (On-Peak, Off-Peak, Shoulder
Peak…)
- 4
Seasons (Winter, Spring, Summer and Fall)
- Sliding
and Fixed Window Averaging
- Variable
Monthly Billing Dates
- 16
Programmable Billing Schedules
- Unlimited
Calendar Assignments
- Automatic
Daylight Savings Time Consideration
- Multiple
Accumulations
- Current
Month
- Current
Season
- Prior
Month
- Prior
Season
- Total
Accumulation to date
Load
Aggregation or Universal Metering
Load
Aggregation
The
unit provides 8 status inputs that can be used
to count pulses. These pulses can have values
and labels assigned to them for storage. Using
these pulses, the user can aggregate or net
multiple loads from other metering devices
with or without the Nexus. The unit also calculates
max demand for each of these pulses.
Universal
Metering
The
unit's pulse counting capability can also be
used for universal metering. For instance the
Nexus can be used to count Gas, Water, Steam
or any other measured value. Aggregating and
netting capabilities also apply. The unit will
calculate max demand for each of these parameters
as well.
Transformer
Loss Compensation
Transformer
Loss Compensate for Both Watts and VARs
The
Nexus monitor allows you to compensate for
Watts and VARs with both Ferris and Copper
losses. Additionally, the unit allows you to
add to or subtract from the values depending
on the use of the meter. As with TOU, this
feature is available at no extra charge.
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