Digital Power Meters

A digital power meter is an electric meter that measures the amount of electrical energy consumed by residences, businesses or electrically powered devices. These meters continuously measure the instantaneous voltage and current to give a reading of energy used. The quantity of the reading is given by a numerical display.

What are digital power meters used for?

The primary function of a digital power meter is to measure energy consumption. These meters can also record other parameters of the load and supply of energy. For example, maximum rates of usage demands, voltages, power factors and reactive factors are also measured by power meters. A further use is time-of-day billing, where the amount of energy consumed can be split into on-peak and off-peak hours.

Types of digital power meters

The choice of a digital power meter depends on the functionality you require for energy consumption measurement. This could be either management and monitoring of network power quality or level and cost of consumption. Devices can allocate energy usage for tenant metering, sub-billing and highlight energy saving time periods. Power consumption measurements can be done on three-phase or single-phase networks.


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Description Price Cutout Height Cutout Width Display Type Number of Digits Number of Phases Pulse Output Depth Digit Height Meter Accuracy Minimum Temperature Maximum Temperature Approvals Maximum Measurement Measurement Range
RS Stock No. 819-9776
Mfr. Part No.E2 Classic
BrandEfergy
HK$715.71
Each
units
- - LCD 3 - - - - >90 % - - - - 50mA - 90A
RS Stock No. 841-7765
Mfr. Part No.METSEPM5100
HK$1,772.01
Each
units
92mm 92mm LCD - 3 Yes 90mm - ±0.5 % -25°C - - - -
RS Stock No. 871-8302
BrandRS PRO
HK$341.92
Each
units
119mm 17.5mm LCD 6 1 Yes 62mm - 1 % -25°C +55°C CE, RoHS Compliant 9999999.9 (Active) kWh, 9999999.9 (Reactive) kVarh 0 → 99999.99kWh
RS Stock No. 913-9665
Mfr. Part No.A9MEM2010
HK$1,082.21
Each
units
- - Electromechanical - 1 Yes 67mm - ±20 V -20°C - - - -
RS Stock No. 789-4085
Mfr. Part No.2CMA100149R1000
BrandABB
HK$915.49
Each
units
- - LCD 6 1 Yes 65mm - 1 % -40°C - - - -
RS Stock No. 797-5459
Mfr. Part No.1506603
HK$219.70
Each
units
- - LCD - 1 - - - ±1 % -10°C - - - -
RS Stock No. 709-9707
Mfr. Part No.4850 3010
BrandSocomec
HK$1,190.69
Each
units
92mm 92mm LCD - 3 Yes 80mm - Class 0.5 s (EN62053-21), Class 2 (EN61268) -10°C - - - -
RS Stock No. 797-5456
Mfr. Part No.1506600
HK$203.30
Each
units
- - LCD - 1 - - - ±1 % -10°C - - - -
RS Stock No. 914-5281
Mfr. Part No.M850-LTHN-RS-PO
BrandHOBUT
HK$1,244.66
Each
units
92mm 92mm LCD 4 3 Yes 80mm - 0.1 (Frequency) %, 0.5 (Volts/Amps) %, 1 (Active Power) %, 1 (Apparent Power) %, 1 (Power Factor) % -20°C 70°C IEC 1036 Class 1, IEC 60947-1, IEC 61000-4-11, IEC 61000-4-2, IEC 61000-4-3, IEC 61000-4-4, IEC 61000-4-5, IEC 61000-4-6, IEC 61010-1 - 28 → 570V
RS Stock No. 871-8314
BrandRS PRO
HK$931.31
Each
units
96mm 96mm LCD 4 3 Yes 55mm - 1 % -25°C +55°C EN 61000-6-1: 2007 (LVD), EN 61010-1: 2010 (EMC), UK Laboratory EN 61000-6-3: 2007 9999999.9 (Active) kWh, 9999999.9 (Reactive) kVarh 0 → 9999999.9 (Active) kWh, 0 → 9999999.9 (Reactive) kVArh
RS Stock No. 841-7756
Mfr. Part No.METSEPM3250
HK$3,591.52
Each
units
- - LCD - 1, 3 Yes 70mm - 0.3 %, 0.5 % -25°C - - - -
RS Stock No. 789-4105
Mfr. Part No.2CMA100166R1000
BrandABB
HK$1,977.60
Each
units
- - LCD 7 3 Yes 65mm - 1 % -40°C - - - -
RS Stock No. 841-7768
Mfr. Part No.METSEPM5111
HK$2,580.60
Each
units
92mm 92mm LCD - 3 Yes 90mm - ±0.5 % -25°C - - - -
RS Stock No. 789-4149
Mfr. Part No.2CSG299883R4052
BrandABB
HK$2,895.60
Each
units
- - LCD - 3 Yes 77mm - ±0.5 % -5°C - - - -
RS Stock No. 613-7417
Mfr. Part No.7E1682300010R
BrandFinder
HK$1,939.52
Each
units
89mm 35mm Mechanical 7 1 Yes 56mm 4 mm Class 1 -10°C +55°C - - -
RS Stock No. 841-7762
Mfr. Part No.METSEPM5310
HK$3,446.36
Each
units
92mm 92mm LCD - 3 Yes 90mm - ±0.5 % -25°C - - - -
RS Stock No. 789-4114
Mfr. Part No.2CMA100177R1000
BrandABB
HK$1,614.43
Each
units
- - LCD 7 3 Yes 65mm - 1 % -40°C - - - -
RS Stock No. 841-7774
Mfr. Part No.METSEPM5320
HK$3,414.27
Each
units
92mm 92mm LCD - 3 Yes 90mm - ±0.5 % -25°C - - - -
RS Stock No. 913-9744
Mfr. Part No.METSEPM5330
HK$4,892.74
Each
units
- - LCD - 3 - 72mm - ±0.005 (Power Factor) %, ±0.05 (Frequency) %, ±0.5 (Active Energy) %, ±0.5 (Active Power) %, ±0.5 (Apparent Power) %, ±0.5 (Current) %, ±0.5 (Voltage) %, ±2 (Reactive Energy) % -25°C +70°C CE Conforming to IEC 61010-1c, CULus Conforming to UL 61010-1, EN 50470-1, EN 50470-3, EN 55022, IEC 60529, IEC 61000-4-2, IEC 61000-4-8, IEC 61557-12, IEC 62053-22, IEC 62053-24 9 A, 65 Hz, 400 (Phase and Neutral) V ac, 690 (Phase) V ac 10 mA → 9 A, 20 → 400 (Phase and Neutral) V ac, 35 → 690 (Phase) V ac, 45 → 65 Hz
RS Stock No. 819-9789
Mfr. Part No.Engage Hub Classic Kit
BrandEfergy
HK$805.74
Each
units
- - - - - - - - - - - CSA, FCC, UL - 50mA - 90A
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