Maximum performance, designed simply

Metrum PQR is a combined 19'' control meter for energy and power quality measurement. The instrument is designed with built-in Essailec contact to facilitate installation.

Intelligent solution

The PQR-meter is using the latest available measurement performance and is a natural part of smart grid solutions. Thanks to the built-in intelligence it can be used both as a class A-reference meter (IEC 61000-4-30) for power quality, and as an energy control meter (0,2S).

Technical specifications

Measurement Inputs

Parameters Specification Information PQR
Voltage channels 0 - 110 V RMS Standard measurement (Class A) Adapted for PT 3
Voltage channels HF Max 4 kV, 1 µs peak detection 3
Current channels 0 - 6 A RMS 1(6) A 4
General inputs 0 - 20 mA 4


Parameters Specification PQR
Supply voltage 85-264 VAC (47-63 Hz) or 110-375 VDC
Power 5 W
Built-in backup Yes


Parameters Specification Information PQR
IEC 61000-4-30 Class A Reference instrument Yes
IEC 61000-4-7 Harmonics Yes
IEC 61000-4-15 Flicker Yes
EN 50160 Compiled in the instrument Yes
EIFS 2013:1 Compiled in the instrument Yes
Norwegian injunction FoL Compiled in the instrument Yes
PQDIF format Export option Yes


Parameters Specification PQR
Memory 128MB
Sampling rate 12,8 kHz
Accuracy < 0,1 %
Resolution Voltage/Current channels 16 bits
Resolution General inputs 12 bits
Bandwidth Standard inputs 3,5 kHz
Bandwidth HF inputs 1 MHz
Input impedance Voltage channels >1 MΩ
Input impedance Current channels 10 mΩ
Anti-alias filter Yes
PLL synchronization Yes


Parameters Information PQR
RS-232 Modem port Yes
RS-232 Computer port Yes
CL-port 20 mA current loop Yes
Ethernet (RJ-45) Option
Modbus TCP/IP Option

Physical data

Parameters Information
Size (W x L x H) 200 x 340 x 110 mm
Weight 3,7 kg
Working temperature -10 °C to +55 °C
Relative humidity 10 % - 85 %, non-condensing