Alternative zu Vitrek 4700 Precision High Voltage Meter

Hallo liebe Community,

ich suche fürs HV Prüffeld eine Alternative für Vitrek 4700  + HVP-35 
Messspitze (USA). Kennt sich jemand aus? Ziel sind die präzisen DC 
Messungen bis 35 kV.

https://vitrek.com/4700-precision-high-voltage-meter/

Messgerät:
Basic accuracy—0.03% DC and 0.1% true RMS AC
Ethernet, serial, USB printer port all standard, GPIB optional
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

Messspitze:
Maximum Voltage Measurement (Input Impedance)
HVL/P-35 Probe : 35KVDC, 30KVACrms (200 Meg ohms)
DC Voltage Measurement Accuracy (Resolution):
HVL/P-35 Probe : 0.035% of reading + 0.07V (100mV)

Danke!