Arbiter Systems®, Inc. Model 933A Portable
Power SentinelTM is the most accurate and most affordable portable
power quality meter in the industry. The proprietary EnergyDSATM
Digital Signal Analysis algorithms allow the user to measure
or record harmonics, flicker (per IEC 61000-4-15, PST and Instantaneous),
K-factor and interruptions. The data logging capabilities of
the Portable Power SentinelTM allow the user to specify the
data to log as well as when to log the data, continuously or
when user specified thresholds are exceeded. The high accuracy,
portability and data logging capabilities make the Portable
Power SentinelTM the perfect field analyzer for the power quality
engineer.
Portability
Thanks to the high level of integration made possible with
EnergyDSATM, the Model 933A Portable Power SentinelTM combines
multiple capabilities into one compact, light weight instrument.
Weighing less than 5.8 kg (12.8 lbs), the Portable Power SentinelTM
is a power quality monitor, data and event logger, a system
monitor, and a revenue meter just like the Model 1133A Power
SentinelTM but is designed to accompany you wherever you go
and operate continuously for a full eight-hour shift.
Capabilities
Primarily designed with the power quality engineer in mind
the Portable Power SentinelTM measures and records harmonics,
flicker, K-factor, and interruptions. In addition to these
measurements, the Portable Power SentinelTM has the ability
to measure system time, phase, frequency and phasors. When
synchronized using the IRIG-B input or the optional GPS input,
the Model 933A is capable of accurate revenue metering. Pre-fault
data can be buffered up to a half second (user definable)
allowing for accurate fault recording. The standard 32 MB
of memory gives ample space for the storage of detected faults,
user defined events, power quality, revenue, and standard
data.
Features
The Model 933A Portable Power SentinelTM includes a 320 x
240 graphic LCD display with a CCFL backlight and a 30-key
multifunction keypad. Communications are made via an RS-232
or USB 2.0 port that supports DNP 3.0, Modbus, PQ-DIF and
proprietary protocols. The standard memory capacity of 32
MB allows for extended data logging capabilities. The 933A
may be powered either from a NiMH battery (8 hours typical
run time) or an external power supply (85 to 264 Vac, 120
to 275 Vdc)
Options
and Accessories
Available options include GPS synchronization for 1 μs timing
accuracy allowing for increased revenue accuracy, optically
isolated event inputs, flexible CT inputs, direct current
inputs, and programmable KYZ output contacts. Available accessories
include an adjustable tilt-handle/bail assembly, a wide selection
of test leads, RS-232 and USB cables.
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