T: 01568 760671 F: 01568 760484 info@windandsun.co.uk Humber Marsh, Stoke Prior, Leominster, Herefordshire, HR6 0NR
...voltmeters & ammeters
Amp Hour Meters
Voltmeters and Ammeters
Accurate and sensitive meters enable the best use and understanding of a system.
Analogue (moving needle type) meters are cheapest and for some applications with fluctuating current, eg. wind turbine output, preferred.
Digital voltmeters allow much greater resolution and so provide more information about state of charge etc..
Voltmeters are connected between positive and negative. If connected directly to a battery a small (eg. 100mA) fuse should be fitted in the wire to positive.
Ammeters are usually connected in a break in the positive wire of the circuit being measured.
For currents above 25A ammeters making use of an external shunt are used. The shunt is usually placed in the negative wire to the load or charge source being measured, and the meter mounted remotely using smaller signal wires.
Note - To accurately measure modified sine wave inverter AC outputs, meters
which record true RMS values are required. POA
To measure energy generated or consumed kilowatt hour (kWh) meters are
needed. OFGEM approved kWh meters are available to enable credits to be obtained
for renewable generation - See Grid Connect Accessories.
Dimensions: 100 x 80 x 48mm; Accuracy +/- 4%
Bench meters ideally suited for educational use.
Connection is via captive 4mm screw terminals.
Dimensions: 34 x 21 mm;
LCD meter uses 3mA, Accuracy +/- 0.01V;
LED meter uses 13mA,
Accuracy +/- 0.1V.
Self powered.
Clips onto cables (without a break) and shows approximate current and direction of flow. Useful in checking operation of inverters and chargers.
Essential for all work on electrical systems. Inexpensive hand held meter with sensing probes. Measures voltage (DC or AC); DC current (up to 10A); resistance (useful for checking wiring continuity)
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Voltmeters and Ammeters
Voltmeters and Ammeters
Accurate and sensitive meters enable the best use and understanding of a system.
Analogue (moving needle type) meters are cheapest and for some applications with fluctuating current, eg. wind turbine output, preferred.
Digital voltmeters allow much greater resolution and so provide more information about state of charge etc..
Voltmeters are connected between positive and negative. If connected directly to a battery a small (eg. 100mA) fuse should be fitted in the wire to positive.
Ammeters are usually connected in a break in the positive wire of the circuit being measured.
For currents above 25A ammeters making use of an external shunt are used. The shunt is usually placed in the negative wire to the load or charge source being measured, and the meter mounted remotely using smaller signal wires.
Note - To accurately measure modified sine wave inverter AC outputs, meters
which record true RMS values are required. POA
To measure energy generated or consumed kilowatt hour (kWh) meters are
needed. OFGEM approved kWh meters are available to enable credits to be obtained
for renewable generation - See Grid Connect Accessories.Meters
DC Moving Coil Panel Mounted Analogue Meters
Dimensions: 72 x 72mm; Accuracy +/- 1.5%| Model Number | Description |
| MCV-15 | 0-15 V voltmeter (for 12V systems) |
| MCV-40 | 0-40 V voltmeter (for 24V systems) |
| MCA-5 | 0-5 A ammeter |
| MCA-10 | 0-10 A ammeter |
| MCA-15 | 0-15 A ammeter |
| MCA-25 | 0-25 A ammeter |
| MCA-40 | 0-40 V ammeter c/w external shunt |
Educational DC Moving Coil Panel Mounted Analogue Meters
Dimensions: 100 x 80 x 48mm; Accuracy +/- 4%
Bench meters ideally suited for educational use.
Connection is via captive 4mm screw terminals.
| Model Number | Description |
| EMCA-5 | 0-5 A educational ammeter |
| EMCA-15 | 0-15 V educational voltmeter |
DC Panel Mounted Digital Meters
Dimensions: 34 x 21 mm;
LCD meter uses 3mA, Accuracy +/- 0.01V;
LED meter uses 13mA,
Accuracy +/- 0.1V.
Self powered.
| Model Number | Description |
| DVM-1 | LCD panel mounting digital voltmeter 6.5 to 18 VDC (for 12V systems) |
| DVM-2 | LCD Panel mounting digital voltmeter 8 to 60 VDC (for 12, 24 or 48V systems) |
DC Induction Ammeter
Clips onto cables (without a break) and shows approximate current and direction of flow. Useful in checking operation of inverters and chargers.
| Model Number | Description |
| IA-1 | 70-0-70 A induction ammeter |
Digital Multimeter
Essential for all work on electrical systems. Inexpensive hand held meter with sensing probes. Measures voltage (DC or AC); DC current (up to 10A); resistance (useful for checking wiring continuity)
| Model Number | Description |
| MM-1 | Digital Multimeter |
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Stoke Prior, Leominster, Herefordshire, HR6 0NR