multimess D9-PQ - Power Quality analyzer

multimess D9-PQ - PQ network quality analyzer

Power quality analyzer for low and medium voltage networks

The multimess D9-PQ helps you to analyze the causes of malfunctions in electrical systemsand machines. By permanently monitoring and controlling network quality, you can detect possible malfunctions early on.

The multimess D9-PQ power quality analyzer and fault recorder is suitable for any measurement task required in electrical networks. You can use it as a power quality interface in accordance with network quality standard EN 50160 and as a measuring device for all physically defined measured values in alternating current networks. Additionally, it provides all consumption values required for energy data management.

In addition to standard evaluations, the In addition to standard evaluations, the multimess D9-PQ also features a high-speed fault recorder with a recording rate of 40.96 kHz/10.24 kHz as well as a 10 ms rms
value recorder. This makes a detailed evaluation of network interferences possible.

The network analyzer is primarily suitable for monitoring and recording quality agreements between energy providers and customers and making them available for evaluation or storage.

Voltage quality measuring devices operate according tothe IEC 61000-4-30 standard. This standard defines measurement methods to create a comparable basis for the user. Devices of different manufacturers operating according to this standard necessarily have to obtain the samemeasuring resultst.


  • Class A PQ analyzer
  • Automatic oscilloscope and 10 ms recording, triggered by adjustable trigger thresholds
  • Free-of-charge analysis software included
  • 4 voltage and current measurement inputs each
  • Oscilloscope and 10 ms report on trigger thresholds
  • Large internal 1 GB memory, expandable to up to 32 GB
  • Harmonic measurement up to 9 kHz optional

Technical data

  • 1.7 inch color display
  • Class A measured data processing
  • IEC 61000-4-30
  • Recording of power quality events according to DIN EN 50160; IEC 61000 -2-2; -2-12;-2-4
  • Automatic EN 50160 network quality report
  • 1 GB internal memory
  • Input channel bandwidth 20 kHz
  • 4 voltage inputs, measuring range end value: 480 V L-N, accuracy < 0.1 %
  • 4 current inputs
  • Simultaneous processing of scanned and calculated voltages and currents
  • Voltage and current oscillograph sampling rate: 40.96 kHz / 10.24 kHz
  • Half-cycle recorder: network frequency, 
    RMS voltage and current,
    voltage and current pointer,
    power recording rate: 10 ms (50 Hz)/8.33 ms (60 Hz)
  • Powerful triggering

Technical details

Technical details multimess F144-PQ
Color display 1,7-Zoll
Keypad for basic configuration on the device yes
Memory 1GB internal, up to 32GB SD card yes
Protection type IP 20
Voltage inputs, accuracy < 0.1 % 4
Current inputs 1/5 A rated current 4
Measuring channel band width 20 kHz (voltage and current) yes
ICE61000-4-30 Edition 3 Class A yes
Residual current input RCM yes
Temperature input PT100/PT1000
Digital inputs 82
Digital outputs 2
Voltage and current oscillograph 10.24 kHz (40.96 kHz option) yes
Online streaming of voltages and currents yes
Voltage and current harmonics 2. – 50. Harmonic yes
Voltage and current harmonics 51. – 180. Harmonic optional
Interfaces Ethernet / RS 485
Communication protocol  Modbus RTU | TCP
Mounting DIN rail, 9 horizontal pitch
Dimensions L x W x H (without terminals)
Dimensions L x W x H (with terminals) 160 x 90 x 58 mm
Dimensions breakout dimension (+0.8 mm)
Weight 502 g
Free evaluation software WinPQ Lite yes


Measurement and functions multimess F144-PQ

Automatic event detection and measurement standards:
EN50160 (2013) / IEC61000-2-2 / IEC61000-2-12 /IEC61000-2-4 (Klasse 1; 2; 3) / NRS048 / IEEE519 / IEC61000-4-30 Klasse A / IEC6:1000-4-7 / IEC61000-4-15

Permanent recording:
Five fixed and two variable measurement time intervals are available for permanent recording: 10/12 T (200ms), 1 sec, n*sec, 150/180 T (3sec), n*min, 10 min, 2 Std.

Measurement and functions
Voltage time interval 10/12
Network frequency, 10-s value (IEC61000-4-30)
Extreme, standard deviation of the network frequency (10 s)            
RMS values (IEC61000-4-30)
Extremes, standard deviation of T/2 values            
Breakdown [%], Overvoltage [%] (IEC61000-4-30)      
Harmonic subgroups n = 0...50 (IEC61000-4-7)      
Maximum values of 10/12 T harmonic subgroups n = 2..50            
Interharmonics subgroups n = 0...49 (IEC61000-4-7)      
Total distortion factor (THDS) (IEC61000-4-7)
Partially weighted distortion factor (PWHD)
Asymmetry, negative/positive sequence, sequence characters
Asymmetry, zero/positive sequence
Positive/Negative/Null Sequence Pointer
Phase angle (fundamental wave)
Flicker (IEC61000-4-15)          
Instantaneous value flicker (IEC61000-4-15)          
Ripple-control voltage [%] (IEC61000-4-30)          
Phase angle (zero crossings) of the phase voltage harmonic
n = 2. - 50. to the fundamental of the reference voltage
Frequency bands 1. - 35. 2 kHz - 9 kHz, RMS


Power Quality Service

Troubleshooting and Solutions

Power Quality - Troubleshooting and Solutions

Your carefree package
Power Quality Maintenance Service

Your network quality in view.
We do it for you!

 Brochure PQ Maintenance Service

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When measurement alone is not enough.

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