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. 455-4450
Mfr. Part No.DPM 959B
BrandLascar
£56.08
Each
Units
DC 3.5 LED 40mm 72mm 8.4mm - - 0.1 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 365-6252
Mfr. Part No.EMV 1200
BrandLascar
£25.95
Each
Units
DC 3 LCD 44mm 21mm 9mm - - ±1 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 419-9356
Mfr. Part No.EMV 1025S-01
BrandLascar
£21.95
Each
Units
DC 3.5 LCD 44mm 21mm 9mm - - ±2 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 455-4494
Mfr. Part No.EM 32-1B-LED
BrandLascar
£37.45
Each
Units
DC 3.5 LED - - - - - ±1 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 399-0186
Mfr. Part No.SP 400
BrandLascar
£21.95
Each
Units
DC 3.5 LCD 21.3mm 34mm 16mm - - ±1 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 420-0557
Mfr. Part No.V 1
BrandLascar
£11.795
Each (In a Pack of 10)
Units
DC 3.5 LCD 15mm 34mm - - - ±3 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 446-2137
Mfr. Part No.OEM 1B-LED
BrandLascar
£19.95
Each
Units
DC 3.5 LED 16.4mm 23.4mm 5.5mm - - ±1 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 351-7567
Mfr. Part No.EMV 1125
BrandLascar
£29.95
Each
Units
DC 3.5 LCD 44mm 21mm 9mm - - ±1 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 223-199
Mfr. Part No.SP400-BLUE
BrandLascar
£23.95
Each
Units
DC 3.5 LCD 21.3mm 34mm 16mm - - ±1 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 419-9384
Mfr. Part No.V 125
BrandLascar
£12.795
Each (In a Pack of 10)
Units
DC 3.5 LCD 45mm 21.5mm - - - ±3 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 257-206
Mfr. Part No.DPM 40
BrandLascar
£44.95
Each
Units
DC 3.5 LED 33mm 68mm 10.6mm - - ±1 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 255-963
Mfr. Part No.DPM 2000
BrandLascar
£31.95
Each
Units
DC 3.5 LCD 36mm 72mm 9mm - - ±0.1 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 446-2121
Mfr. Part No.OEM 1B
BrandLascar
£19.95
Each
Units
DC 3.5 LCD - - 5.5mm - - ±1 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 106-4881
Mfr. Part No.DPM 160S
BrandLascar
£78.45
Each
Units
DC 4.5 LCD 27mm 57mm 8.2mm - - ±1 % Digits Only 0°C +50°C Voltmeter -
RS Stock No. 257-212
Mfr. Part No.DPM 125
BrandLascar
£28.45
Each
Units
DC 3.5 LCD 22.2mm 45mm 9mm - - ±1 % Digits Only 0°C +50°C Voltmeter -
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. 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 -