All ProductsAnalyticalAnalyzersCalibratorsHumidityData LoggersLight MetersMeasurement

 

MultimetersOhmmetersPressureStandardsTemperatureTransmitters

STANDARD RESISTORS
Standard Resistors Type 5615 and 5686 

5615 High Value Resistance Standards
5686 Low Value Resistance Standards

The design of our standard resistors is based on work carried out over many years with the co-operation of the National Physical Laboratory. 


Much of the design originated with FJ.Wilkins of the NPL. Tinsley Standards are in use by many of the National and Industrial Standards Laboratories throughout the world

5615 High Value Resistance Standards

These high resistance value Standard Resistors are of similar appearance to the Type 5685/5686 Series, but of higher resistance value. 

The resistance elements are specially wound in a strain-free manner from selected precision resistance alloy. These resistors can be supplied with a NAMAS Certificate.

 

SPECIFICATION

Value Accuracy Temperature Coefficient
100kΩ +/-0.005% 10ppm
1MΩ +/-0.005% 20ppm
10MΩ +/-0.005% 20ppm
Dimensions 140 x 83mm diameter
Net Weight 0.6kg approximately

5686 Low Value Resistance Standards

These four-terminal Standard Resistors are for direct current use and have three nominal values: 
0.001, 0.01, 0.1 Ohms. 
They are sealed into stainless steel cases and oil filled. 

These resistors are suitable for air cooling or for use in a temperature controlled enclosure or oil bath for greater stability. 

The resistance elements are made from selected manganin which is heat treated to improve stability and to reduce temperature coefficient. Joints are silver soldered with copper being used for connections to the terminals. The insulating material is high grade phenolic and the panel is fitted to the stainless steel can by means of an ‘0’ ring. 

For most accurate work the recommended wattage dissipation is 10 milli-Watts but up to 1 Watt may be dissipated without harm to the elements. (In the case of the 0.001 Ohm Resistor the current should not exceed 10 amperes, 100 milli-Watts).

SPECIFICATION

Value 0.001 Ohm 0.01 Ohm 0.1 Ohm
Limit of Error 0.02% 0.01% 0.002%
Calibrated Accuracy 60 ppm 30 ppm 10 ppm
Maximum Dissipation 0.1 Watts 1.0 Watts 1.0 Watts
Recommended Dissipation 10 milli-Watts 10 milli-Watts 10 milli-Watts
Temperature Coefficient of Resistance at 20°C 50 ppm/°C +/- 10 ppm/°C +/- 10 ppm/°C
Appropriate Load Characteristic 100 ppm / Watt 20 ppm / Watt 20 ppm / Watt
A.C Characteristic at 50 Hz 50 ppm 50 ppm 50 ppm
Dimensions Can: - 114 x 76 mm  Overall: -  140 x 83mm
Net Weight 0.6kg approx.

 

A Test Certificate giving the actual resistance value to the limit of error and temperature coefficient at 20°C will be supplied with each Standard Resistor.

Please email sales@hotektech.com or call 253-927-6186 if you are interested in a purchase, or
  need additional information.

[Home] [Top] [Distribution] [Contact Us]