User's Guide

36 A c l a r a R F E l e c t r i c I - 2 1 0 + c U s e r G u i d e
Supported Measurements
Supported Measurements
It should be noted that the meter supports a wide variety of measurements, but the
particular measurements available at any given time will be governed by the meter
programming. An I-210+c is considered to be a demand meter, demand / load
profile meter, or time of use / load profile meter depending on its softswitch
enablements. The meter supports 8 Data Accumulations. From this it can support 4
billing measures and 2 demand measures. The values programmed in the meter as
billing measures can be used for DS, OR, or DR messages. The values
programmed as demand measures can be used in DR messages.
Some customers may want to reset demand daily and others monthly. The meter
treats demand as demand. It can be reset daily if you wish (with MeterMate
configuring the meter to perform an Automatic Demand Reset on a daily basis).
One of these maximum demands captured daily will be the largest one in a month
and can serve as the monthly maximum demand. The MDMS should be able to
help make that determination. To collect daily demand, use MeterMate to set the
Reset Interval to 1 day. Then in the NIC, be sure to configure the Daily Shift
message to report the previous demand values you want to collect.
It should be noted that when demand is enabled, both maximum demand and a
cumulative demand will be captured by the meter and either or both may be
reported.
Since a demand reset causes present maximum demand to be zeroed, and the
timestamp for the maximum to be made invalid, it is recommended to not
configure the module to report present maximum demand as part of a DR message.
It could however be useful as a DS message for the CSR who wants to monitor
progress towards a monthly maximum demand. For utilities that instead desire
information regarding a daily maximum, previous maximum demand values, and
the demand reset counter, these should be placed in the DS message list.
LP Data
The measurements supported by various NIC firmware versions are listed in their
respective customer configuration worksheets. The NIC will bring back anything
the meter can produce, but the latest NIC firmware must be present in order to
support the latest meter firmware. Furthermore, not every size of LP data
supported by the meter is supported by the NIC. The NIC will support interval
sizes of 60, 30,15, and 5 minutes. The meter will support a few additional interval
sizes such as 10 minutes and 1 minute. These are currently not supported in the
NIC. The user must select another interval size. Upon power-up, the NIC will read
the meter tables, determine what is defined, and automatically make messages to
bring back every defined channel at the specified message rate.
The meter is capable of reporting each of the four flow directions (forward,
reverse, total, and net) for kWh and kVArh energy. Being LP data, these will be
expressed as delta data rather than bulk quantities. If a bulk quantity of these
channels are reported with a Daily Shift message, and every interval of LP data is