Aclara I-210+, Руководство пользователя, Страница: 29 / 55

CHAPTER
4
M
AINTENANCE
The I-210+ meter is designed for unattended operation over a long life. When the
meter or the site requires attention, the meter has features to facilitate the following
tasks:
• Enabling various modes of operation and enhanced functions already built
into the meter software.
• Displayable disk analog, instantaneous power, and RMS voltage capabilities,
for field calibration and testing.
• Application verification through limited site diagnostics.
This section provides information to aid qualified personnel when testing or
troubleshooting a meter.
Meter Accuracy Testing
The I-210+ meter includes provisions to verify the accuracy of calibration.
Test Mode
The I-210+ meter does not provide an independent test mode. Energy measured
during meter tests is accumulated normally.
Configuration Port
The optical configuration port is intended primarily for use in a controlled indoor
environment and is not shielded from ambient light. Bright light conditions may
interfere with field operation of the port. If field operation is required, a cover with
a shielded optical port is recommended.
Calibration
The meter is equipped with an infra-red light-emitting diode (IR- LED) for
calibration and a LCD with disk analog and test displays. The calibration IR-LED
is part of the configuration port as shown in the figure below.
The Configuration Port LED emits calibration pulses of infrared light unless the
meter detects the presence of OPTOCOM communications. Each calibration pulse
is equal to the value assigned to Kt (watt-hours). The duration of each output pulse
is approximately 25 milliseconds. The pulses are intended to be compatible with
the optical pickups provided by most watt-hour meter test equipment
manufacturers.