Expansion modules add an additional four (4) relays, two (2) 4-20 mA outputs, and eight (8) digital I/O. Availability & Pricing The ProVu® PD6400 High Voltage and Current Meter is available now ...

In the photos above, the measured voltage is 17kV. The spark gap width (i.e. the spark length) is measured as just under 5mm. If we apply the formula for a 5mm spark gap, we get 3 x 5mm = 15kV.

Poway, CA. Vitrek has introduced the HVL-150 SmartProbe, which expands the measurement range of the company’s Model 4700 precision high-voltage meter to 140 kVDC and 100 kVAC ...

As far as USB-C voltage and amperage meters are concerned, the design is pretty standard. The meter from Plugable is about 2 1/2″ in length, 7/8″ in width, and about 3/8″ thick.