Portable Analog Wattmeter
Product Code : SCL-PLE-11708
The StemAids Portable Analog Wattmeter is a high-precision electrodynamic instrument engineered for the empirical study of real power consumption in AC and DC circuits. Optimized for Secondary, Vocational (TVET), and University-level electrical engineering, this apparatus facilitates the quantification of the product of voltage, current, and power factor (P=VIcos?). Manufactured to ISO 9001:2015 standards, it provides a ruggedized, benchtop solution for verifying load efficiency and phase relationships within institutional power laboratories.
Technical Specifications
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Tender Specification |
OEM Technical Detail |
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Measurement Principle |
Air-cored Electrodynamometer (Moving Coil & Fixed Coil) |
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Functional Application |
Active Power (Watts) measurement for AC and DC loads |
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Accuracy Class |
1.0 to 1.5 (Laboratory Grade Precision) |
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Frequency Range |
Calibrated for 45 Hz – 65 Hz (AC) and pure DC |
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Input Interface |
4mm Safety Shrouded Sockets for Voltage (P1-P2) and Current (C1-C2) |
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Chassis Construction |
Impact-resistant, anti-static polymer housing with integrated handle |
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Scale Interface |
Knife-edge pointer with anti-parallax mirror and linear graduation |
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ISO Compliance Code |
Manufactured under ISO 9001:2015 Quality Management Systems |
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HS Code |
9030.33.00 (Instruments for measuring electrical power) |
Key Pedagogical Outcomes (Bloom’s Taxonomy Alignment)
- Electrodynamic Interaction Interface: Facilitates student visualization of the interaction between fixed current coils and the moving pressure coil, supporting Electrical Engineering Module 201.
- Real Power Quantification: Enables the physical study of electrical work, allowing learners to apply the meter to differentiate between Apparent Power (VA) and Real Power (Watts).
- Power Factor Analysis: Supports the analysis of phase shifts in inductive or capacitive loads by observing the deflection magnitude relative to calculated VI
- Instrument Connection Evaluation: Allows students to evaluate correct terminal wiring (L-M-C-V) to avoid short circuits or reverse deflection during multi-phase demonstrations.
International Logistics & Compliance
StemAids ensures comprehensive OEM readiness for global institutional procurement:
- Packaging: Export-grade seaworthy crating (ISPM-15 compliant) featuring high-density foam stabilization to protect the delicate taut-band suspension and pivot assemblies.
- Documentation: Includes Manufacturer’s Authorization Form (MAF), Certificate of Conformance (CoC), and detailed Schematic Connection Diagrams in English.
- Durability: Tropicalized design featuring high-insulation resistance and moisture-resistant internal coils for reliable performance in varied climates (up to 45°C).
Direct OEM Sourcing Advantages
Procuring the StemAids Portable Analog Wattmeter directly ensures vertical manufacturing control:
- In-House Precision Calibration: Every meter is batch-tested against secondary standards to ensure linearity across the entire scale and zero-drift performance.
- Batch-Tested for Uniform Reliability: Every unit undergoes a 2kV dielectric strength test to ensure user safety during high-voltage power measurements.
- Direct Factory Spares Availability: Guaranteed availability of replacement terminal knobs, glass windows, and internal multiplier resistors to maximize long-term laboratory ROI.
- Manufacturing Control: Direct oversight of the coil-winding density and hairspring tension ensures consistent damping and torque-to-weight ratios across all production lots.
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