Galvanometer
Product Code : SCL-PLE-11741
The JLab India Galvanometer is a precision moving-coil instrument engineered for the detection and indication of extremely small electric currents. Optimized for Secondary and University-level physics, this center-zero meter is the foundational component for null-point detection in Wheatstone bridge and potentiometer experiments. It provides a high-stability, low-damping solution for quantifying electrical equilibrium within institutional laboratory environments.
Technical Specifications
| Tender Specification | OEM Technical Detail |
| Movement Type | High-sensitivity Moving Coil (PMMC) with jewel bearings |
| Scale Configuration | Center-Zero (30−0−30 or 50−0−50 divisions) |
| Sensitivity / Figure of Merit | Typically 20μA/div or 50μA/div |
| Internal Resistance | G≈50Ω to 100Ω (Batch-specific calibration) |
| Zero Adjustment | External mechanical screw for precise pointer alignment |
| Chassis Construction | High-impact ABS polymer case with a clear, anti-glare acrylic window |
| Terminals | Color-coded, safety-shrouded 4mm brass binding posts |
Certification | ISO certificates available on request |
| HS Code | 9030.33.00 (Instruments for measuring/detecting voltage/current) |
Key Pedagogical Outcomes (Bloom’s Taxonomy Alignment)
- Current Detection Interface: Facilitates student visualization of the direction and magnitude of small currents (I), supporting Electromagnetism Module 101.
- Figure of Merit Quantification: Enables the physical study of sensitivity, allowing learners to apply the formula k=I/θ to determine the current required for a one-division deflection.
- Bridge Balancing Analysis: Supports the analysis of balanced networks; the galvanometer’s center-zero design is critical for achieving a "null-point" where Ig=0.
- Instrument Conversion Evaluation: Allows students to evaluate the versatility of the device as it serves as the base movement for conversion into a Voltmeter (via high-resistance series multiplier) or an Ammeter (via low-resistance parallel shunt).
International Logistics & Compliance
JLab India ensures comprehensive OEM readiness for global institutional procurement:
- Packaging: Export-grade seaworthy crating (ISPM-15 compliant) featuring high-density foam molding to lock the pointer and protect the delicate hairspring and jewel bearings from vibrational stress during transit.
- Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and individual calibration data.
- Durability: Tropicalized design featuring anti-fungal treatment on the scale plate and oxidation-resistant coil windings, tested for performance in high-humidity climates (up to 90% RH).
Direct OEM Sourcing Advantages
Procuring the JLab India Galvanometer directly ensures vertical manufacturing control:
- In-House Magnetic Flux Calibration: Every permanent magnet is batch-stabilized to ensure a uniform radial magnetic field, resulting in a perfectly linear scale.
- Batch-Tested for Uniform Reliability: Every unit undergoes a "zero-return" test to ensure the pointer returns to center without hysteresis after full-scale deflection.
- Direct Factory Spares Availability: Guaranteed availability of replacement glass windows, terminal nuts, and calibrated pointer assemblies to maximize long-term laboratory ROI.
- Manufacturing Control: Direct oversight of the coil-winding process ensures minimal internal resistance variation, providing consistent results across entire classroom sets.