Guildline 6634A Series Temperature Stabilized Resistance Standards 0.1Ω to 100 MΩ
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GUILDLINE INSTRUMENTS 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 precision resistance standards enclosed in a temperature controlled chamber.
There are 10 standard resistance values available covering the range of 0.1 ohm to 100 Megohms.
Each resistance element is isolated and has a 4 terminal connection at the back panel. The resistance elements are maintained at 30 ± 0.01 °C in a temperature stabilized chamber. Chamber temperature set points of 35 °C and 40 0C ± 0.01 0C are available on request. Temperature monitoring is provided by a precision PRT sensor installed in the chamber with 4 terminal connectors provided on the front panel.
The Model 6634A is intended to be used as a Working Standard Resistance Reference for automated resistance measurement systems. Special resistance values are available in the range of 0.1 to 100M ohms.
Four standard model variations are available with 5, 8, 9 or 10 resistance elements installed. Special values or other sets of standard resistance values may be ordered. All models purchased with less than 10 resistance standards can be expanded at any time.
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Resistance Range: 0.1Ω to 100 MΩ in one decade incrementsSingle Decade Increments
Temperature Coefficient ± 0.005 ppm/0C
Stabilities Low as < 2 ppm/year
Thermometry Value Models Available
4 Terminal Connections
Eliminates Oil Bath Requirements
Internal PRT Stability : ±0.020°C / Year
Custom Internal Temperature Set Points
Ambient Temperature Range: 230°C ± 50°C
Low Thermal EMF's - Shielded Chamber
Temperature Regulation: ± 0.01 0°C overa 1 year period
Guarded Resistance Element Chamber
Custom Values / Models Available
CE Marked with World-Wide Voltage& Frequencies
Top End Range Values up to 100 TΩ with Guildline Model 6636