Resistance Standards, Modular Series

6634a Guildline Instruments

Overview

  • Normal Ohms Resistance Range: 0.1 Ω to 100 MΩ in Single Decade Increments
  • Low Ohms Resistance Range provides 1 mΩ to 0.1 Ω in Decade Steps
  • Temperature Coefficient < ± 0.005 ppm/°C
  • Stabilities Low as < 2 ppm/year
  • Eliminates Oil Bath Requirements

Spec.

  • 6634A series is a modular series of Resistance Standards that can be rack mountable or simply set on a bench. The 6634A Series provides a set of up to 10 precision resistance standards enclosed in a temperature controlled and EMI protected chamber. For the Normal Ohms Configurations, there are 10 standard resistance values available covering the range of 0.1 Ω to 100 MΩ. Each resistance element is isolated and has 4-terminal connections on the rear panel. The resistance elements are maintained at approximately 30 °C in a temperature stabilized chamber. Each element is built with Guildline’s “true” multi-element design.

Application

National Measurement Institutes, military, and calibration laboratories.

Downloads

More info on the 6634a

Perfect for Automated Measurement Systems or as a Primary Laboratory Resistance Standard

The Model 6634A is excellent as a working standard for automated resistance measurement systems or as reference standards at the primary level. Special resistance values are available in the range of 0.001 Ω to 100 MΩ. Standard model variations are available with 5, 6, 7, 8, 9 or 10 resistance elements installed. All models purchased with less than 10 resistance standards can be expanded at any time via a factory upgrade. Special resistance values can also be ordered.

A New Low Ohms Configuration is now available for values below 0.1 Ω. This Series has the same precision temperature stability as the Normal Ohms Configuration, but is limited to a maximum of 3 Resistance Elements. This is due to the large size of the low ohmic elements. The Resistance Range of the Low Ohms models is from 1 mΩ to 100 mΩ.

One key advantage of Guildline Resistance Standards is that each Resistance Value is made up from multiple resistance elements, not just a single element which is the technique used by most manufacturers. This approach lowers the drift that is seen with a single element and reduces the internal noise generated inside the reference resistor. Other real advantages are the use of a PRT vs a thermistor for internal temperature control, and the Guildline 6634A Standard does not require any fans like competitive models. The result is industry leading annual drift rates and very quiet measurements.

Where we add value

We are measurement system architects

We aim to exceed your expectations and provide solutions which add value to your business and make you more profitable. Our approach is simple yet effective; working with you to ensure that our solutions meet your requirements, perfectly.

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+44 (0)1264 316470

Servicing

To ensure longevity of your instrument, contact our service department for a quote.

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Parts

We supply a comprehensive range of parts and accessories, to support the products we supply.

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Calibration

Maintain precision and accuracy of your instrument with our calibration team.

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Need Assistance?

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Or speak to our expert UK-based team now

+44 (0)1264 316470