HT instruments PQA824 - Manual (Page 7)

PQA400 - PQA823 - PQA824
EN - 6
2. GENERAL DESCRIPTION
2.1. INTRODUCTION
The PQA400, PQA823 and PQA824 meters permits a completely new approach to the
world of electrical measures on network quality. In fact the computer assisted instruments
along with Windows CE technology permit an easy and widely fast analysis of a huge
quantity of data, which would be impossible with any other system.
This user’s manual is common to all meters, the PQA823 and PQA824 are indicated as
“PQA82x” and the differences between meters’, if necessary, are clearly declared in
manual. Each model is generically called “meter”.
2.2. FUNCTIONS
This meter are able to performs:
 Real time visualization of numeric values of any electrical parameters of a single phase
and three-phase 3-wire or 4-wire systems, harmonic analysis of voltages and currents
up to 49
st
order, Voltage anomalies (surge and dips) with 10ms resolution, Flicker (Pst,
Plt) of input voltages, voltages unbalance, inrush current measurements (PQA82x
models only) and fast voltage transients analysis with 5
s resolution (PQA824 only).
 Real time display of any input signal waveform, histogram graphics of harmonics
analysis and vectorial diagrams of mutual angles between voltages and currents.
 Recording (by pressing GO/STOP key) of this values: TRMS values of voltages,
currents, corresponding harmonics, active, reactive and apparent powers, power
factors and cosphi, active, reactive and apparent energies, voltage anomalies. It will
be possible to analyze the recorded data ONLY by transferring them to a PC.
 Saving (by pressing SAVE key) of a “Instant” sampled of instantaneous values of any
parameters present at instrument input inside memory. It will be possible to analyze
the memorized data ONLY by transferring them to a PC.
2.3. INITIAL
SCREEN
When turning on the instrument by pressing ON/OFF key, this below screen will appear for
a few seconds:
PQA824
HT
Sn:13030004 Rel:1.32
Calibration Date: 09/01/2013
Here you can see (besides model code and manufacturer name):
 The serial number of the meter (Sn:).
 The release of internal meter Firmware (Rel:).
 Date of last calibration (Calibration Date:).