The SRC-Tnetwork is a standard resistor designed for calibration of various electrometers and megohmmeters.
The SRC-Tnetwork is a high resistance standard that uses 3 lower value resistors configured in a T network to create a higher resistance.
T-Networks
For high resistance measurements a T-network is often used with instruments such as electrometers and megohmmeters equipped with a guard terminal.
A T-network uses low value resistors to achieve what electronically looks like a high value resistor.
The basic operation of a T-network is three resistors are place in a T configuration and connected to the positive, negative and guard terminals of the megohmmeter.
The ratio of the resistors then determines the effective resistance value that will actually be displayed by the megohmmeter.
The advantages of the T network is that low value resistors are used that can be easily and accurately measured as compared with trying to calibrate a single high value resistor.
The use of binding posts makes it easy to connect to a wide variety of megohmmeters. The use of Kel-F washers under the binding posts minimizes leakage.
The bnc connector provides easy access to the center tap of the T network for calibration, without having to open the housing.
A shorting link allows for guard to be connected to chassis or be used separately depending upon the megohmmeter being calibrated.
More information on the use of wye-delta networks containing three resistance elements to achieve high resistance values can be found at the articles belowComparison of Multiple Methods for Obtaining PΩ Resistances with Low Uncertainties
Uncertainty estimation for high-resistance standards of the wye-delta type
'
‘
‘
Hubungi:
PT Bopana Arga Prima Jaya
Jalan Jupiter VI Perum Bintang Metropol
Blok A7 No.16 Bekasi Utara 17122
Jawa Barat, Indonesia
Telp : 021-22163350
Hp : 08119762505 / 081285345374
Email : boney@bapj.co.id / tesa@bapj.co.id
