Voltmeters

Voltmeters are instruments that measure the voltage, or potential deviation, between two points in an electrical circuit. Voltmeters are panel mounted devices that can display with either an analogue or digital display. Analogue panel voltmeters have a pointer that moves along a scale proportional to the voltage level. Digital panel voltmeters measure the potential deviation in the same way and display this with a digital readout.

What are voltmeters used for?

Voltmeters can measure voltage levels in generators or fixed machinery. They're commonly used in chemical processing plants where pressure, temperature or fluid-flow readings can be converted into voltage measurements.

Types of Analogue Voltmeters

  • Moving coil voltmeters have either permanent magnets or dynamometers as measuring components with low power consumption benefits.
  • Moving iron voltmeters can measure both AC and DC currents by producing a deflective torque. The torque-to-weight ratio is high which means increased accuracy of readings.
  • Electrostatic voltmeters measure current flow based on attracting, repulsion or symmetry between two electrically charged plates. Their benefits is the high voltage range capacity of 200KV.

Types of Digital Voltmeters

Digital panel voltmeters have a number of different parameters such as supply voltage and meter accuracy. Typical mounting options include 12-pin DIPs and traditional bezel mounts. Digital screen options include a range of red, blue or green LED or LCD display units to suit your needs under different lighting conditions. Housings can be circular, square or rectangular.


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Description Price Current Type Number of Digits Display Type Cutout Height Cutout Width Depth Supply Voltage Digit Height Meter Accuracy Analogue Effect Minimum Temperature Maximum Temperature Meter Type Approvals
RS Stock No. 399-0209
Mfr. Part No.SP 200
BrandLascar
£20.95
Each
Units
DC 3.5 LCD 21.3mm 34mm 16mm - - ±1 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 332-1855
Mfr. Part No.DPM 970
BrandLascar
£69.95
Each
Units
AC 3.5 LCD 40mm 72mm 12.5mm - - ±2 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 392-8585
Mfr. Part No.9605000000B
£25.45
Each
Units
DC - - 92mm 92mm 53mm - - Class 1.5 - - +23°C Voltmeter -
RS Stock No. 163-8820
Mfr. Part No.PM-2/30V
BrandMonacor
£17.98
Each
Units
DC - - - - 23mm - - - - - - Voltmeter -
RS Stock No. 313-570
Mfr. Part No.D721MCS75MV/4-001 NO DIAL
BrandHOBUT
£35.79
Each
Units
DC - - - - - - - - - -25°C +40°C Voltmeter -
RS Stock No. 106-4875
Mfr. Part No.DPM 160
BrandLascar
£69.45
Each
Units
DC 4.5 LCD 27mm 57mm 8.2mm - - ±1 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 399-0215
Mfr. Part No.SP 300
BrandLascar
£25.95
Each
Units
DC 3.5 LED 21.3mm 34mm 16mm - - ±1 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 867-3066
Mfr. Part No.EMV 1200-40
BrandLascar
£28.55
Each
Units
DC 3 LCD - 5.5mm - - 12.5 mm ±0.4 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 904-7938
Mfr. Part No.APM-SHUNT-APO
BrandTrumeter
£80.67
Each
Units
DC 4 LCD 68mm 68mm 52mm 12 → 24 V dc 12 mm 0.1 % Digital -10°C 60°C Voltmeter CE, cUL, cULus, UL
RS Stock No. 176-4171
Mfr. Part No.DMS-20PC-1-LM-C
£45.86
Each
Units
AC 3.5 LED 21.29mm 33.93mm 17.45mm - - - Digits Only - - Voltmeter -
RS Stock No. 446-2159
Mfr. Part No.DPM 750S-BL
BrandLascar
£29.45
Each
Units
DC 3.5 LCD 32mm 62mm 9.5mm - - ±1 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 201-0318
Mfr. Part No.IS 11175
£44.67
Each
Units
AC - - 38mm 43mm - - - - - -25°C +55°C Voltmeter -
RS Stock No. 312-842
Mfr. Part No.D72MIS300V/2-001
BrandHOBUT
£19.72
Each
Units
AC - - 68mm 68mm - - - - - -25°C +40°C Voltmeter -
RS Stock No. 313-643
Mfr. Part No.D721MCS10V/2-001
BrandHOBUT
£37.30
Each
Units
DC - - - - - - - - - -25°C +40°C Voltmeter -
RS Stock No. 904-7932
Mfr. Part No.APM-SHUNT-ANO
BrandTrumeter
£73.29
Each
Units
DC 4 LCD 68mm 68mm 53mm 12 → 24 V dc 12 mm 0.1 % Digital -10°C 60°C Voltmeter CE, cUL, cULus, UL
RS Stock No. 903-3576
Mfr. Part No.DMS-40LCD-0/1-5B-C
£67.16
Each
Units
DC 4.5 LCD 22.3mm 53.80mm 13.2mm - 10.2 mm ±3 % Digits Only 0°C +50°C Voltmeter RoHS Compliant
RS Stock No. 810-3324
Mfr. Part No.DMR20-1-ACV-R-C
£40.13
Each
Units
AC 4 LED - 30.73mm 29.9mm - - ±2 V Digits Only -25°C +60°C Voltmeter -
RS Stock No. 203-978
Mfr. Part No.DPM 950
BrandLascar
£41.95
Each
Units
DC 3.5 LCD 40mm 72mm 8.4mm - - ±1 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 905-5661
Mfr. Part No.PAXLA0U0
BrandRed Lion
£202.46
Each
Units
DC 5 LED 49.5mm 96.5mm 104.1mm - 14.2 mm - Digits Only 0°C +50°C Voltmeter CE, UL
RS Stock No. 106-0031
Mfr. Part No.DPM 950S
BrandLascar
£44.95
Each
Units
DC 3.5 LCD 40mm 72mm 8.4mm - - ±1 % Digits Only 0°C +50°C Voltmeter -