Hello. My name is John Olobri.
I'm Director of Sales and Marketing here at AEMC instruments
AEMC is a world-leading manufacturer of electrical test and measurement equipment.
Specifically known for Power Quality Analysis,
Ground Resistance testers,
Insulation Resistance testers (more commonly referred to as Megohmmeters),
Data Loggers, Bond Resistance Micro-Ohmmeters,
and a whole variety of other products.
The Model 8335 is a full function power quality analyzer.
It incorporates many unique features and functions
that make the job of analyzing power quality rather easy.
The main area here
includes direct function buttons. When these buttons are pressed
you immediately see that function and those results on the screen.
There's a waveform button, which is what we're looking at here on the screen now
where we see real time updates of the wave.
There's a harmonics button where we can see the harmonic content
for both current and voltage for each of the phases,
phases 1, 2 and 3 from the 1st
through the 50th harmonic. There is a Transient
Inrush mode where we can see and select
whether we want to measure Transients or whether we want to measure Inrush
and then see the results of those functions on the screen
There is a recording function where we can set up
the time and the date to start a recording the time and date of ending the recording
and the frequency which we want the sample data.
The Model 8335 includes 2 Gigabytes of memory
and with this amount of memory we can record
up to 22 different variables,
once per second for 30 days or longer.
There is an alarm function where we can pick
the start and the stop time for tracking events
and these events are catalogged by the
time they start, the duration and the value of each event.
The 8335 can store up to 10,000 events
from any 1 of 40 or up to including all 40 different variables.
There is a setup button.
In the setup function we can pick and set the time and date. We can
set the contrast and the clarity of the display.
We can set the configuration mode.
For example: if I scroll down to
electrical hookup, press the Enter key
now I can scroll through whether I'm on a three-phase
4-wire hookup, a single phase hookup,
a split-phase hookup, a three-phase
5-wire for a WYE connection hook up and so on.
It's very intuitive, very straightforward, not only does the display tell you
which hookup your choosing but also gives the operator
the schematic on how to connect it. Once I made my selection I press the Enter key.
and I move on to my next choice. If I go to
sensor selection here, we have an opportunity to determine which
sensors we're going to use to measure current. However, the Model 8335
is a smart recorder. It automatically knows what sensor is plugged into it and
calibrates to it.
We'll talk a little bit more about sensors in a few minutes.
In the trend mode that we talked about. This is where I can pick
those parameters that we want to record. As you can see from this screen here,
there are a multitude of parameters that we can record.
The ones that show up as a red diamond
have been selected for recording.
To un-select a channel, I simply go to it,
press the Enter key, now that red diamond turned into a white diamond.
So I can pick any, up to any 1 of 22 parameters or all 22 parameters to record in the trend mode.
In the Alarm mode that we talked about
this is where we're tracking the parameters that we want to record in
this case we're looking at Volts-RMS,
we're looking at for all three phases and we set a threshold
of some voltage value and we set conditions for which
we have to meet in terms of time and
percentage deviation for this event to occur.
There up to 40 of these variables we can pick and, as we said, we can save up to 10,000 of them.
OK. If I go back to the screen mode here
There is a screen capture feature. Simply press the screen capture button
and now this screen is saved into memory
and we can save up to
50 of those screen captures into memory.
The sampling mechanism for the Model 8335
is such that we sample all 8 inputs
at 256 times per cycle.
So we get a very good trace fidelity, very good reproduction of the signal.
All the power quality functions that you would expect
in a power quality analyzer are in this instrument.
Volts, Amps, Watts, vars,
Power Factor, K-Factor, Crest Factor
Unbalance, Flicker and many, many others.
There's also a phase rotation Phasor diagram
where we can see, if I had all three phases hooked up here, we can see the
phase relationship to all of the inputs. This assists you
in getting the configuration correctly before starting a recording
To start a recording is pretty simple.
You press the record button and
you press the key here, that looks like a disk,
and we would then begin starting recording at the sample rate and the parameters for which you selected.
Some of the key specifications on the 8335:
it will measure True RMS voltage and True RMS current.
It will measure up to 1,000 volts phase-to-phase
or phase-to-neutral. The current measurement is dependent upon the probe
that's connected to it and we'll talk about the probes in a little bit.
It can be for as low as a few hundred milli-amps
to as high as 6500 amps. As we also mentioned
it records vars, Power Factor, Displacement Power Factor,
Demand, kilowatt hours, and many other variables.
The unit is powered by a 9.6 volt Nickel Metal Hydride rechargeable battery
and it has a external charger.
We will talk about how that's connected in little bit.
A fully charged battery, with the display on, will run about eight hours.
With the display off and recording
it will run for about 35 hours on the battery.
Of course, it can run indefinitely plugged into the charger.
For more information and technical support on this product, or other
products manufactured by AEMC,
please call us on our technical hotline at 800-343-1391