www.accuenergy.com
V: 1.0 Revised: Jan. 2018
84
AcuDC 240 Series
DC Energy & Power meters
D. Glossary of Definitions
AWG: American Wire Gauge, is an U.S. standard of wire conductor sizes. The ‘gauge’ is
related to the diameter of the wire. Larger ‘gauge’ means smaller diameter and thinner
wire.
AO (Analog Output): is a measurable electrical signal with a defined range that is
generated by a controller and sent to a controlled device. The AcuDC 240 series power
meter can output analog voltage or analog current. When it outputs analog voltage, the
range of voltage is from 0 to 5V or from 1 to 5V. When it outputs analog current, the range
of current is from 0 to 20mA or from 4 to 20mA.
Baud Rate: Baud rate is the data transmission rate. In the AcuDC 240 series power meter,
the Baud Rate is used to define the communication rate of RS485, which can be set as
1200, 2400, 4800, 9600, 19200 or 38400.
Charge: the flow of electric charge is called electric current. In the AcuDC 240 series
power meter, the unit of charge is Ah (ampere hour), which equals to the charge
transferred by a steady current of oneampereflowing for one hour
Import Charge: Charge that flows to the load from the grid or source
Export Charge: Charge that flows to the grid or source from the load
Total Charge: absolute sum of import charge and export charge
Net Charge: algebraic sum of import charge and export charge
DC: Direct Current is the electrical current which flows consistently in one direction.
DI counter: Digital Input counter for interfacing with devices that output pulses such as a
gas meter.
EMC filter: is a passive electronic device (comprised of multiple components) for
suppressing conducted interference found on any signal or power line to improve the
immunity from EMI (Electromagnetic Interference) signals in the surrounding setting.
Energy: is the integration of power over a defined time increment, measured in unit
of kWh (kilowatt hours). A kWh represents a constant load of 1000 watts for one hour.
Almost all electric bills are based on energy, so energy is a very important measurement
parameter.
Import Energy: energy that is consumed by the load from the grid or source.
Export Energy: energy that is absorbed by the grid or source from the load.
Total Energy: absolute sum of import energy and export energy
Net Energy: algebraic sum of import energy and export energy
To Next Page
Loading...
Need help?
General
