Amprobe DM-II-PLUS Power-Quality-Recorder - Manual (Page 21)

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The instrument can only store a total of 35 Smp, Rec, and R&a.
Smp – A sample of voltage and current with the parameters.
Rec – A recording without Voltage Sag and Surge detection.
R&a – A recording with Voltage Sag and Surge detection.
DATA SIZE – Amount of data saved (used) in the memory.
REC TIME – Amount of recording time (day.hours format) available, calculated based on
the amount of memory unused and the current parameters set.
Push F3 (LAST) to delete the most recent recording or sample. The instrument will ask
you to confirm. Push ENTER.
Push F4 (ALL) to delete all recordings and samples. The instrument will ask you to
confirm. Push ENTER.
Pushing the SAVE key will cause the instrument to “memorize” the sampled voltage and
current with the parameters (Smp).
Pushing the START key after proper settings will cause the instrument to “record” RMS values
of voltages, currents, corresponding harmonics, active, reactive and apparent powers, power
factors and cosϕ, active, reactive and apparent energies, voltage sag and surge with 8.3ms
resolution (Rec or R&a).
MAINtENANCE AND REPAIR
If there appears to be a malfunction during the operation of the meter, the following steps
should be performed in order to isolate the cause of the problem:
1. Check the batteries. When the battery indicator on the top right-hand corner of the
display appears almost empty ( ), the batteries must be replaced.
2. Review the operating instructions for possible mistakes in operating procedure.
3. Inspect and test the test leads for a broken or intermittent connection.
Except for the replacement of the batteries or test probes, repair of the multimeter should
be performed only by a Factory Authorized Service Center or by other qualified instrument
service personnel. The front panel and case can be cleaned with a mild solution of detergent
and water. Apply sparingly with a damp soft cloth and allow to dry completely before using.
Do not use aromatic hydrocarbons or chlorinated solvents for cleaning.
Battery Replacement
 Warning
To prevent electrical shock or meter damage, disconnect the meter’s test leads from any
circuit and the meter, then turn the meter off before removing the battery cover. Battery
replacement should be performed in a clean environment and with appropriate care taken to
avoid contaminating the meter’s interior components.
1. Remove the screws and lift the battery cover.
2. Replace the batteries with the same type, 1.5 V D. Note polarity of the batteries.
3. Replace the battery cover and screws
tECHNICAL SPECIfICAtIoNS
features
The accuracy is stated as [percentage of the reading ± number of digits]. It refers to the
following atmospheric conditions: temperature 23°C ± 1°C (73°F ± 2°F ) with relative humidity
< 75%.