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Amprobe's DM-II PLUS is a full-featured
three phase power quality recorder to maintain, diagnose and
troubleshoot electrical systems. It measures and records a broad
spectrum of power quality parameters. Easy to use, it’s capable of
measuring and recording voltage, current, voltage anomalies
(sags or surges), harmonics, energy and power (active,
reactive and apparent), power factor (true and
displacement), and frequency. This unique product comes as
a complete kit with current transducers and an increased memory
size for data storage, larger display size, and real-time
downloading using Amprobe's unique Download Suite software.
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Features
- AC Current up to 1000A, AC Voltage, Active, Reactive and
Apparent Power, Energy, Peak Demand & Power Factor.
- All readings are True RMS.
- 5 built-in selectable languages: English, French, Italian,
German and Spanish.
- User selectable rates allow recording from one hour to
several months.
- Works with single & three phase systems (Y and delta).
- Readings and charts can be viewed on the DM-II LCD screen or
downloaded to a PC.
- Capable of recording all parameters (single or three phase)
simultaneously.
- Optional transducers available for 100A and 3000A (flexible)
current capability.
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Specifications
(Accuracy 23°C ±1°C
with R.H. <75%) |
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Voltage measurement (Auto-ranging) |
| Range |
Accuracy |
Resolution |
Input
Impedance |
| 15V to 370V |
±(0.5% of Rdg + 2 digits) |
0.2V |
300kΩ (phase -
neutral) |
| 310V to 635V |
±(0.5% of Rdg + 2 digits) |
0.4V |
300kΩ (phase -
phase) |
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Voltage Anomalies Detection (Manual
Selection of Range) |
| Range |
Accuracy |
Resolution |
Input
Impedance |
| 15V to 370V |
±(0.5% of Rdg + 2 digits) |
0.2V |
300kΩ (phase -
neutral) |
| 310V to 635V |
±(0.5% of Rdg + 2 digits) |
0.4V |
300kΩ (phase -
phase) |
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Current Measurement (DM-II Plus only) |
| Range |
Accuracy |
Resolution |
Input
Impedance |
Overload
Protection |
| 0.005V to 0.26V |
±(0.5% of Rdg + 2 digits) |
0.0001V |
100kΩ, 5V |
0.26 to 1V, 0.0004V |
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Current Measurement (Using DM-CT-HTA
Clamp) |
| Range |
Accuracy |
Resolution |
Input
Impedance |
Overload
Protection |
| 5A to 1000A |
±(1.5% of Range) |
0.1A |
N/A |
600V |
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Note: Minimal Current measurable is equal to 1.5% of Clamp Full Scale
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Current Measurement (Using AM-FLEX 33
Clamp) |
| Range |
Accuracy |
Resolution |
Input
Impedance |
Overload
Protection |
| 15A to 3000A |
±(1.5% of Range) |
0.1A |
N/A |
600V |
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Power Measurement (cos: 0.5c[positive] -
0.5i[negative]) |
| Value |
Ranges |
Accuracy |
Resolution |
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Active Power |
0 to 999.9W |
±(1.5% of Rdg + 2 digits) |
0.1W |
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1kW to 999.9kW |
±(1.5% of Rdg + 2 digits) |
0.1kW |
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1MW to 999.9MW |
±(1.5% of Rdg + 2 digits) |
0.1MW |
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Reactive Power |
0 to 999.9VAR |
±(1.5% of Rdg + 2 digits) |
0.1VAR |
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1kVAR to 999.9kVAR |
±(1.5% of Rdg + 2 digits) |
0.1kVAR |
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1MVAR to 999.9MVAR |
±(1.5% of Rdg + 2 digits) |
0.1MVAR |
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Apparent Power |
0 to 999.9VA |
±(1.5% of Rdg + 2 digits) |
0.1VA |
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1kVA to 999.9kVA |
±(1.5% of Rdg + 2 digits) |
0.1kVA |
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1MVA to 999.9MVA |
±(1.5% of Rdg + 2 digits) |
0.1MVA |
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Active Energy |
0 to 999.9Wh |
±(1.5% of Rdg + 2 digits) |
0.1Wh |
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1kWh to 999.9kWh |
±(1.5% of Rdg + 2 digits) |
0.1kWh |
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1MWh to 999.9MWh |
±(1.5% of Rdg + 2 digits) |
0.1MWh |
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Reactive Energy |
0 to 999.9VARh |
±(1.5% of Rdg + 2 digits) |
0.1VARh |
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1kVARh to 999.9kVARh |
±(1.5% of Rdg + 2 digits) |
0.1kVARh |
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1MVARh to 999.9MVARh |
±(1.5% of Rdg + 2 digits) |
0.1MVARh |
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Cos
ф Measurement |
| Cos
ф Range |
Resolution |
Accuracy (expressed
in degrees) |
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0 to 0.20 |
0.01 |
0.6 |
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0.21 to 0.50 |
0.01 |
0.7 |
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0.51 to 0.80 |
0.01 |
1 |
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Measurement of Harmonics |
| Range |
Accuracy |
Resolution |
| DC to 25h |
±(5.0% of Rdg + 2 digits) |
0.1V |
| 26h to 33h |
±(10% of Rdg + 2 digits) |
0.1V |
| 34h to 49h |
±(15% of Rdg + 2 digits) |
0.1V |
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The voltage harmonic will be null under the following threshold:
DC: if <1V or <2% of 1st harmonic
1st harmonic: if <2V
2nd to 49th: if <1V or <2% 1st harmonic
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Current |
| Range |
Accuracy |
Resolution |
| DC to 25h |
±(5.0% of Rdg + 2 digits) |
0.1A |
| 26h to 33h |
±(10% of Rdg + 2 digits) |
0.1A |
| 34h to 49h |
±(15% of Rdg + 2 digits) |
0.1A |
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The current harmonics will be null under the following threshold:
DC: if <2% of 1st harmonic or <0.2% of clamp full scale
1st harmonic: if <0.2% of clamp full scale
2nd to 49th: if <2% 1st harmonic or <0.2% of clamp full scale
Setting the FLEX option the DC component will be ignored.
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Frequency Measurement (instrument set to
50Hz) |
| Range |
Accuracy |
Resolution |
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47Hz to 53Hz |
±(1.0% + 1 digit) |
0.1Hz |
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Frequency Measurement (instrument set to
60Hz) |
| Range |
Accuracy |
Resolution |
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57Hz to 63.6Hz |
±(1.0% + 1 digit) |
0.1Hz |
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General Specifications |
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Dimensions |
444.5mm (L) x
273.05mm (W) x 190.5mm (D) |
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17.5" (L) x 10.75"
(W) x 7.5" (D) |
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Weight |
5.2kg (11.5lb) |
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Internal Power
Supply |
6 batteries 1.5V
type 'D' size NEDA 13A, IEC L20R |
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Battery Life |
22 hours |
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External Power
Supply |
Use only Amprobe
power supply Adapter code DMT-EXTPS |
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Display |
Dot matrix with
backlight |
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Display
Resolution |
128 x 128 dots
(16384 dots) |
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Dot Size |
0.5mm x 0.5mm |
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Visible area |
73mm x 73mm (2.9" x
2.9") |
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No. of Samples
per Period |
128 |
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Clamp Opening |
53mm (2.15") |
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Maximum Diameter
of the cable |
50mm (2.0") |
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Reference
Temperature |
23°C
±1°C (73°F ±2°F) |
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Operating
Temperature |
0°C
to 50°C (32°F 122°F) |
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Relative
Humidity |
<70% |
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Storage
Temperature |
-10°C
to 60°C (14°F 140°F) |
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Storage Humidity |
<80% |
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EMC/EMI/ESD |
EN 61326-1:2006 |
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Safety |
EN 61010-1:2002 |
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Insulation |
Class 2 , Pollution
Degree 2 |
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Over-voltage
category |
CAT III 370V (Phase
to Earth) |
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CAT III 635V (Phase
to Phase) |
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Clamps |
IEC 61010-2-032 Ed.
2.0 |
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Phase Sequence
Detection |
EN 61557-7:2003 |
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Included Accessories |
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Instrument supplied as a complete kit,
CT's and PC software, and user manual |
