Rheostat, Constantine (Eureka) Wire Manufacturer,Supplier and Exporter in India
Product Code : SCL-ES-11801
This Educational Instrument is a precision-engineered linear potentiometer designed for current regulation and voltage division in University, Secondary TVET, and Vocational laboratories.1 Utilizing a high-stability Constantine (Eureka) alloy winding on a reinforced porcelain tube, it ensures minimal thermal drift during resistive load experiments. Compliant with international pedagogical standards for DC/AC circuit analysis and Ohm’s Law verification.
Technical Specifications
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Tender Specification |
OEM Technical Detail |
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Resistive Element |
Constantine (Eureka) Wire; Cu-Ni Alloy (approx. 55% Cu, 45% Ni) |
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Insulation Core |
Heavy-duty, non-porous Porcelain Tube (High-dielectric strength) |
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Slider Assembly |
Heavy-duty Brass contact with spring-loaded compression for uniform friction |
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End Supports |
Precision-molded Bakelite or powder-coated die-cast metal for thermal decoupling |
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Terminal Type |
4mm safety-shrouded or heavy-duty brass screw terminals (Bench-mountable) |
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Available Lengths |
15cm to 50cm (standardized increments) |
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Resistance Range |
10 $\Omega$ to 500 $\Omega$ (Model dependent) |
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Current Rating |
0.5A to 10A (Variable by wire gauge and winding density) |
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Operational Temp |
Calibrated for 20°C; Operational range up to 45°C/90% RH |
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HS Code |
8533.29 (Other fixed resistors) / 9023.00 (Educational Apparatus) |
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ISO Compliance |
Manufactured in ISO 9001:2015 certified facilities |
Key Pedagogical Outcomes
Feature: Constantine (Eureka) Alloy Winding.2 -> Outcome: Demonstrates a low temperature coefficient of resistance, allowing students to record stable data during long-duration thermal-electrical experiments.
Feature: Triple-Terminal Configuration. -> Outcome: Facilitates dual-mode application as both a series rheostat (current limiter) and a parallel potentiometer (voltage divider).
Feature: Exposed Linear Geometry. -> Outcome: Enables physical measurement of wire length vs. resistance, supporting the derivation of the Resistivity Formula ($\rho$).
Feature: Robust Porcelain Insulation.3 -> Outcome: Provides safe heat dissipation during high-current demonstrations, ensuring user safety during continuous load testing.
International Logistics & Compliance
This instrument is engineered for global procurement programs and large-scale educational tenders. Packaging consists of export-grade, seaworthy crating (ISPM-15 compliant) with high-density polyethylene (HDPE) internal cushioning to prevent filament displacement during transit. Each consignment is supplied with a Manufacturer’s Authorization Form (MAF), IQ/OQ/PQ certification protocols upon request, and comprehensive technical manuals in English. The hardware features a tropicalized design, rigorously tested for performance stability in high-humidity environments (up to 90% RH) and ambient temperatures up to 45°C.
Why Source from the OEM?
Procuring directly from the manufacturer ensures vertical integration and long-term technical support. Our facility manages the entire production lifecycle—from the precision winding of Constantine wire to the molding of high-dielectric supports—ensuring batch-to-batch uniformity that third-party traders cannot guarantee. OEM sourcing provides immediate access to factory-original spares, specialized calibration data, and the ability to customize resistance/current parameters for specific national curricula.
