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6622A Series
Direct Current Comparator Resistance Bridges
World's First ONE BRIDGE Family of Modular and Expandable DCC Bridges

GUILDLINE INSTRUMENTS 6622A SERIES introduces new
design concepts and the best in measurement uncertainties
for Direct Current Comparator (DCC) Resistance Bridges
manufactured by anyone today. Unique innovations in 6622A
design and modularity means users no longer have to decide
what Bridge satisfies current requirements as well as guess as
to what Bridge would meet future requirements. Optional
modules allow for normal, high ohms, and low ohms
measurements without having to purchase multiple bridges.

The 6622A Series modular design allows you to buy what is
required today with existing budgets, and when workload
requirements change, simply expand your bridge to meet
these requirements without any loss of your original
investment! Modular design provides a ONE BRIDGE solution
reducing life cycle costs not only for equipment support, but
also for software development and technician training.
6622A SERIES FEATURES Modular design provides the perfect solution for current and
future needs, whether you need secondary uncertainties or a
Primary Laboratory Standard.
Widest Available Range from 1 m ~1 G
Modular Design, Expandable Capabilities, The concept and implementation is easy. You can start with
Complete Investment Protection the low-cost 6622A Base DCC Bridge with uncertainties down
to 0.1 ppm and measurement range to 100 k. Workload
Full 10.5 Digits (0.1 ppb) Display Resolution requirements demand higher measurement range? Then
start with the eXtended Range (XR) model with its
Unique Measurement Trending Display measurement range to 100 M. You can move to better
Provides Measurement Results on Display uncertainties with an eXtended Performance (XP) or eXtended
Performance & Range (XPR) models. You can even start with
Change All Key parameters "on-the-fly" or upgrade to the world's leading High Voltage Model (HV)
while the measurement is running with uncertainties down to 0.02 ppm and a measurement
range of 1 G and with built-in voltages to 1000 Vdc.
Built-In Voltages to 1000 Vdc
Linearity: