SENIOR KELVIN DOUBLE BRIDGE

Model : 55X-SK

DESCRIPTION

“RAI Senior Kelvin Double Bridge” Model 55X-SK is an ideal kelvin double bridge instrument for precision low-resistance measurement. It is designed for applications in cable, transformer, and wire manufacturing industries. This double bridge is also suitable for quality control and maintenance of transformers in heavy electrical engineering and power transmission projects.

The instrument provides a versatile measurement range of 0.02 micro-ohms to 1.1 ohm and is designed for high-precision measurement of extremely low resistance values. Ten standard resistors drawn from manganin sheet, each having a value of 0.001 ohm, are provided in the bridge.

The slide wire is divided into 500 divisions to provide a resolution of 0.02 micro-ohms. This slide wire is totally immersed in oil to ensure excellent stability of resistance in the bridge. The four-terminal arrangement helps provide accurate low-resistance measurement while minimizing the effects of lead and contact resistance.

The Senior Kelvin Double Bridge is suitable for laboratories, manufacturing industries, calibration applications, transformer testing, cable testing, and other applications requiring a reliable kelvin double bridge instrument for extremely low resistance measurement.

SPECIFICATION

ACCURACY

RANGE FACTOR, TOTAL RANGE & RESOLUTION

FEATURES

• Precision measurement range from 0.02 micro-ohm to 1.1 ohm.

• Oil-immersed slide wire for improved resistance stability.

• Four terminals for accurate low-resistance measurement.

• Manganin wire having an exceptionally low temperature coefficient.

• Remarkably long-lasting resistance values with excellent stability.

• Reproducible measurements.

• Perfectly aged Manganin coils/strips employed in Kelvin Bridges.

• Click-type, hard silver-plated, self-cleaning switches.

• Excellent elastic properties of Manganin.

• Oil-immersed slide wire in the Kelvin Double Bridge.

• Solid brass blocks for positive plug contacts.

• Excellent calibration stability.

• Designed as a reliable kelvin double bridge instrument for precision resistance measurement.

• Suitable for industrial and laboratory applications using the double bridge measurement principle.

ACCESSORIES FOR SENIOR KELVIN DOUBLE BRIDGE

The following accessories are required with the Senior Kelvin Double Bridge as support accessories to complete the measurement system. The Bridge becomes a complete measurement system in conjunction with the following accessories:

1. Conductivity Attachment

2. High Amperage DC Source (0 to 50 Amp. suitable for bridge)

3. Spot Reflecting Galvanometer

4. Analogue Galvanometer with selector switch for protection of Spot Reflecting Galvanometer

5. Current Reversing Switch

Frequently Asked Questions

1. What is a Kelvin Double Bridge Instrument?

A kelvin double bridge instrument is a precision electrical measuring instrument used for accurate measurement of very low resistance values. The 55X-SK uses a four-terminal arrangement to minimize errors caused by lead and contact resistance.

2. What is the measurement range of the Senior Kelvin Double Bridge?

The 55X-SK has a measurement range from 0.02 micro-ohm to 1.1 ohm, making it suitable for high-precision measurement of extremely low resistance values.

3. What accuracy does the 55X-SK provide?

The Senior Kelvin Double Bridge provides ±0.2% ±1 slide wire division below 0.0001 ohm, ±0.1% from 0.0001 ohm to 0.01 ohm, and ±0.05% above 0.01 ohm.

4. What is the resolution of the Senior Kelvin Double Bridge?

The 55X-SK provides a resolution as low as 0.02 micro-ohm. Its slide wire is divided into 500 divisions and immersed in oil to improve resistance stability during measurement.

5. Where is the 55X-SK Double Bridge used?

The double bridge is suitable for cable, transformer, and wire manufacturing industries, as well as laboratories, calibration applications, quality control, transformer testing, and maintenance of electrical equipment.