Lab High Impedance 100KV DC High Voltage Probe. The HVL-100G is a high impedance bench top high voltage probe which connects to the 4700 probe input to extend the measurement range up to 100 KV. Its higher impedance allows it to be used in electrostatic voltmeter applications. It is supplied with an ISO 17025 accredited certificate of calibration with data and uncertainties and a detachable toroid corona shield. Overall height is 495mm with 1.8m cable. (DC Only)

The Vitrek 4700 Precision High Voltage Meter is the top choice when you require high voltage test equipment, the 4700 offers the highest level of measurement accuracy, yet is surprisingly easy to use. Vitrek has harnessed DSP technology to provide outstanding AC & DC voltage accuracy, stability and resolution. Performance that rivals traditional HV reference dividers, yet unlike the delicate HV divider, the 4700 provides instant, direct, high voltage measurements in a highly portable, compact and rugged bench top enclosure.


The 4700’s large, high resolution, color, touch graphic display simultaneously shows the AC and DC content of the voltage being measured and can plot readings from a few seconds to several days.

Direct Measurement or HV SmartProbe™

Vitrek’s 4700 precisely measures voltages directly up to 10KV, right out of the box – with no external probes. That’s high enough for most of the HV sources out there. However, should you care to expand your high voltage measurement range – just add one or more of the available 35KV, 70KV, 100KV and 150KV SmartProbes™. The Vitrek SmartProbes™ each store their own calibration data which is down loaded when they are plugged in to the 4700 – this results in high accuracy, calibrated readings and allows any Vitrek SmartProbe™ to be used with any 4700 High Voltage Meter. The SmartProbe’s™ proprietary, ultra-low TC attenuator design minimizes self-heating – while its lower capacitance construction technology enhances AC performance. In addition to the direct input terminal the 4700 has two probe inputs – use one probe to extend your measurement range or use two probes for making high voltage differential measurements.

Superior High Voltage Measurement Equipment — Performance by Design

Measurement integrity is our bottom line – whether you are on a production line manufacturing high voltage medical imaging equipment, in a national laboratory conducting ground breaking research or in the cal lab certifying test equipment, it is essential to choose your high voltage measurement equipment carefully. To insure the best possible measurement accuracy, the 4700 makes over 40,000 reading per second which are then filtered, sub-sampled, scaled and offset corrected – all with “error free” mathematic methodology. The True RMS AC readings are as true as they come, while the DC measurements offer rocket fast settling with rock solid stability. In addition to this, the 4700 provides VLF AC readings down to 0.01 Hz, as well as, peak to peak, crest factor and fundamental frequency measurement. Available G series probes offer extremely high input impedance options for electrostatic voltmeter applications.

High Voltage Test Automation

With Vitrek’s high voltage test automation feature, you can automate your HV test requirement with the 4700’s built-in Ethernet port, high speed serial communication port or available GPIB. The 4700 is fully programmable – so you can select your measurement mode and bandwidth, then take readings as often as desired. The 4700 high voltage tester also comes standard with a USB printer port, to capture readings and get hardcopy printouts of HV plots – so you can document the sag or overshoot in a typical hipot test.

Available ISO 17025 Accredited Calibration

The 4700 and probes come with an ISO 17025 accredited calibration certificate with data at no charge. Vitrek is accredited to ISO 17025 by A2LA. Consider Vitrek at the forefront when it comes to your annual calibrations for the 4700 and probes.

Product Features

  • Calibrates Hipot Testers, HV Power Supplies and Insulation Testers
  • Measures up to 10KV directly and 35, 70 , 100 or 150KV with HV Smartprobes
  • Basic Accuracy – 0.03% DC and 0.1% True RMS AC
  • Color Touch Screen – Makes for Easy Measurement Selection and Display
  • Ethernet, Serial, USB Printer Port all standard, GPIB optional
  • Simultaneous AC & DC Voltage Readings
  • Chart Mode provides Graphic documentation of HV drift, ramp time, overshoot and sag
  • Dual inputs allows Differential or Phase to Phase Voltage Measurement
  • High Speed DSP provides up to 60 filtered readings per second
  • True RMS AC Measurement from 0.01Hz to 600Hz – Covering VLF to Aviation Frequencies
  • AC Noise Rejection 78dB – For Rock Solid, 6 Digit DC Measurements
  • Optional Battery Pack goes up to 11 hours between charges
  • G Series – High Input Impedance DC Probes for Electrostatic applications
  • CE mark Certified to EN61010
  • Standard ISO 17025 Accredited Calibration comes standard with all 4700 units and probes
  • Three Year Extended Warranty (One Year Standard Warranty)

Abbreviated 4700 Performance Specifications

For full specifications, please see the Operator’s manual available in the Downloads tab.

Maximum Voltage Measurement (Input Impedance)
Direct Input Terminal 10KVDC, 10KVACrms (110 Meg ohms)
HVL-35 / HVP-35 Probe 35KVDC, 30KVACrms (200 Meg ohms)
HVL-35G Probe 35KVDC (10 Gig ohms)
HVL-70 Probe 70KVDC, 50KVACrms (400 Meg ohms)
HVL-70G Probe 70KVDC (20 Gig ohms)
HVL-100 Probe 100KVDC, 75KVACrms (600 Meg ohms)
HVL-100G Probe 100KVDC (30 Gig ohms)
HVL-150 Probe 140KVDC, 100KVACrms (1000 Meg ohms)
DC Voltage Measurement Accuracy (Resolution)
Direct Input Terminal 0.03% of reading + 0.03V (10mV)
HVL-35 / HVP-35 Probe 0.035% of reading + 0.07V (100mV)
HVL-35G Probe 0.25% of reading + 1.5V (1V)
HVL-70 Probe 0.04% of reading + 0.2V (1V)
HVL-70G Probe 0.35% of reading + 3.5V (1V)
HVL-100 Probe 0.05% of reading + 0.3V (1V)
HVL-100G Probe 0.5% of reading + 15 (10V)
HVL-150 Probe 0.08% of reading + 0.7V (10V)
AC Voltage Measurement Accuracy (Resolution)
Direct Input Terminal 0.12% of reading + 0.1V (10mV)
HVL-35 / HVP-35 Probe 0.1% of reading + 0.2V (100mV)
HVL-70 Probe 0.1% of reading + 0.4V (1V)
HVL-100 Probe 0.1% of reading + 0.6V (1V)
HVL-150 Probe 0.5% of reading + 1V (10V)
High Voltage Self Heating Effect
Direct Input Terminal 1.5 ppm of reading per KV2
HVL-35 / HVP-35 Probe 0.4 ppm of reading per KV2 / 0.75 ppm of reading per KV2
HVL-70 Probe 0.14 ppm of reading per KV2
HVL-100 Probe 0.14 ppm of reading per KV2
HVL-150 Probe 0.2 ppm of reading per KV2
General Specifications
AC/DC Voltage Measurement Resolution Selectable 4, 5 or 6 digits
Measurement Functions DC Voltage, True RMS AC Voltage, Ripple, Peak to Peak, Crest Factor & Frequency Measurement (4 digits 0.01 Hz to 600Hz)
Measurement Time Selectable down to 16mS (60 readings per sec.)
Maximum Input to Common Terminal 3 KV Peak for 1 sec, no damage
Accuracy Specifications Valid one year ± 5C from Cal temperature
Interfaces LAN (Ethernet), RS232/Serial and USB printer port standard. GPIB optional.
Operating Environment 0 to 50C, <85% RH (non-condensing)
Dimensions 218mm (8.5″) wide x 130mm (5″) high x 253mm (10″) deep, nominally
Weight 2.4kg max (4kg shipping)
AC Source 45 to 450Hz, 100 to 265Vrms at
DC Source 11 to 16Vdc at <1.2A, using a center positive 2.5mm DC power connector
BP-47 Battery Option Up to 11 hours continuous operation

Standard Accessories

The 4700 is shipped with an ISO 17025 cal cert with data and uncertainties, direct input test leads, chassis ground lead, operator’s manual, and external power supply. All probes ship with an ISO 17025 cal cert with data and uncertainties. The HVP handheld probes comes with a detachable probe tip and the HVL series probes ship with a toroid corona shield.


3 year extended parts and labor warranty with no charge registration and annual factory calibration. 1 year standard warranty.

Ordering & Accessories

Below prices in US$ are for destinations in North America with terms of prepay, net 30 days (OAC) and accepted credit cards. For shipment beyond North America or terms beyond 30 days, please contact the factory for a quotation. If you require rush/expedited shipment please contact Vitrek at (858) 689-2755 or email info@vitrek.com

4700 Series High Voltage Meter

4700 Series High Voltage SmartProbes

4700 Series High Voltage Meter Accessories


The 4700 Precision HV meter (with available probes and accessories) is available for rent. Please contact the factory for a rental quotation on the items and period of time you desire. Vitrek offers a generous rental allowance for rentals that are converted to a purchase and rentals of 12 months come with a 10% buyout.