Industrial Kelvin Double Bridge

Model : 55X-IK

DESCRIPTION-

“RAI” Industrial Kelvin Double Bridge Model 55X-IK is an important instrument for the measurement of low resistance values ranging from 0.2 Micro-ohms to 11 ohms. This kelvin double bridge is designed for accurate low-resistance measurement and is suitable for industrial, laboratory, calibration, and engineering applications.

The Industrial Kelvin Bridge employs 10 standard resistors made from well-aged manganin sheets having excellent stability and reproducibility. Manganin has a very low temperature coefficient, which is a critical parameter in the manufacturing of resistance standards. Four standard decade dials, ratio selector, and plug keys facilitate accurate null detection.

The instrument operates on the principle of a kelvin bridge, using a four-terminal measurement method to minimize the effects of lead and contact resistance. The arrangement of the bridge circuit, resistance arms, ratio settings, and measurement terminals can be understood through a kelvin double bridge diagram, which illustrates the low-resistance measurement principle and connection method.

SPECIFICATIONS

Accuracy

Range Factor, Total Range & Resolution

FEATURES

• Precision measurement range from 0.2 micro-ohm to 11 ohm.

• Four-terminal method for accurate low-resistance measurement.

• Manganin wire having an exceptionally low temperature coefficient.

• Remarkably long-lasting resistance values with excellent stability.

• Highly reproducible measurements.

• Perfectly aged Manganin coils/strips employed in the kelvin double bridge.

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

• Excellent elastic properties of Manganin.

• Solid brass blocks for positive plug contacts.

• Excellent calibration stability.

• Designed for accurate low-resistance measurement using the kelvin bridge principle.

• Suitable for applications requiring precise and stable low-resistance measurement.

ACCESSORIES FOR INDUSTRIAL KELVIN DOUBLE BRIDGE

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

• Conductivity Attachment

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

• Spot Reflecting Galvanometer

• Analogue Galvanometer with selector switch for protection of Spot Reflecting Galvanometer

Frequently Asked Questions

1. What is a Kelvin Double Bridge?

A Kelvin Double Bridge is a precision electrical instrument used for measuring very low resistance values while minimizing the effects of lead and contact resistance. The 55X-IK uses a four-terminal measurement method for accurate low-resistance measurement.

2. What is the measurement range of the 55X-IK?

The Industrial Kelvin Double Bridge Model 55X-IK measures resistance from 0.2 micro-ohms to 11 ohms, making it suitable for precise low-resistance measurement and calibration applications.

3. What is the accuracy of the Industrial Kelvin Double Bridge?

The 55X-IK provides accuracy of ±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. How does a Kelvin Bridge measure low resistance accurately?

A kelvin bridge uses a four-terminal measurement arrangement to reduce errors caused by lead and contact resistance. The ratio arms, standard resistance, current source, and null detection arrangement work together to provide accurate low-resistance measurements.

5. Where is the 55X-IK Industrial Kelvin Double Bridge used?

The 55X-IK is suitable for industrial, laboratory, calibration, and engineering applications requiring accurate low-resistance measurement. A kelvin double bridge diagram can also be used to understand its circuit arrangement and measurement principle.