Flickermeter; Meter - METREL MI 2792 PowerQ4 Plus Instruction Manual

MI 2792 PowerQ4 Plus

3.6 Flickermeter

Flickermeter measures the human perception of the effect of amplitude modulation on
the mains voltage powering a light bulb. In Flickermeter menu instrument shows
measured flicker parameters. Results can be seen in a tabular (METER) or a graphical
form (TREND) - which is active only while RECORDER is active. See section 3.9 for
instructions how to start recording. In order to understand meanings of particular
parameter see section 5.1.9.

3.6.1 Meter

By entering FLICKERMETER
FLICKERMETER tabular screen is shown (see figure below).
Description of symbols and abbreviations used in METER screen is shown in table
bellow.
Table 3.24: Instrument screen symbols and abbreviations
Current recorder status:
RECORDER is active
RECORDER is busy (retrieving data from memory)
RECORDER is not active
Current instrument time
Urms True effective value U
Pst(1min) Short term (1 min) flicker P
Pst Short term (10 min) flicker P
Plt Long term flicker (2h) P
Inverted colors represent that measurement is not valid (in case of voltage
overrange, voltage dips, low voltage, etc.)
Table 3.25: Keys functions
menu
Figure 3.25: Flickermeter table screen
Rms
st1min
st
st
Waveform snapshoot:
Hold measurement on display
Save held measurement into memory
35
Operating the instrument
from MEASUREMENTS menu the