TUNKIA’s Testing Solution for Nanovoltmeter Calibration

Standard Voltage Divider Method

TH1950

Precision Multifunction Calibrator

TH0320 Reference Resistance Standard

 • The short-term stability of the TH1950 output voltage reaches 1.5 ppm/min, which is better than 1/10 of the absolute value of the relative maximum allowable error of the nanovoltmeter.

 • The maximum operating voltage and nominal resistance of TH0320 cover the calibration range of the nanovoltmeter, and the annual stability reaches 5 ppm, meeting the calibration requirements.

 • Before calibration, the DC voltage divider composed of standard resistors needs to be calibrated using the electric bridge method.

 • During the test, it is necessary to switch between different standard resistances according to the test range.

High Precision 8.5 Digit Multimeter

Current-

Voltage Conversion Method

TH1000

Ultra-Stable Current Standard

TH0320 Reference Resistance Standard

  • The short-term stability of the TH1000 output current reaches 10 ppm/min, which is better than 1/10 of the absolute value of the relative maximum allowable error of the nanovoltmeter.

  • The maximum operating voltage and nominal resistance of TH0320 cover the calibration range of the nanovoltmeter, and the annual stability reaches 5 ppm, meeting the calibration requirements.

  • Before calibration, the DC voltage divider composed of standard resistors needs to be calibrated using the electric bridge method.

  • During the test, it is necessary to switch between different standard resistances according to the test range.

High Precision 8.5 Digit Multimeter

Model

TH1200 Nanovoltmeter Calibration Device

Voltage Output Range

± (0~120V)

Display Digits

8-digit decimal

Measurement Uncertainty (1 year)

6 ~ 19 ppm

Short-term Stability (pk-pk)

0.7 ~ 2.8 ppm/min

Source Internal Resistance (Ω)

Load Current(mA)

≤ 2 Ω @ (1 mV ~ 100 mV)

≤ 50 mA @ (1V~100 V)

Stability Time

< 3 s to full uncertainty, range or polarity change +1 s

 Note: ① If the zero calibration operation is not performed on the 1 mV, 10mV, and 100 mV range blocks, the zero output error needs to be increased by 100 nV. ② The 100 V range only supports CH1 output.

 • The 1 mV output stability is better than 1.8 nV/min, and the typical value is better than 1 nV, meeting the needs of nanovoltmeter calibration.

• The equipment reserves a variety of communication interfaces (RS232, LAN, USB), and the host computer software is adapted to the common nanovoltmeters under test (34420A / 2182A) on the market, and supports automatic calibration of the nanovoltmeters under test according to calibration specifications.

 • Supports ± (0 ~ 120 V) voltage output, fully covering nanovolt voltmeter calibration needs;

 • Dual-channel voltage output terminals avoid the need to manually switch output terminals for calibration;

 • It supports adapting to the original low thermal electromotive force test wire of the nanovolt meter, and the calibration operation can be completed with a single connection. The calibration process completely simulates the actual working scenario.