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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®
power
monitor 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® power monitor 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® power
monitor . 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® monitor 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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