GW Instek GDM-531/532/533/541 Handheld Digital Multimeters
Digital MultimetersHandheld digital multimeters from 6,000 to 22,000 counts with True RMS, temperature measurement, and USB interface for field service and production testing. Buy in India from GSAS.
Models
GDM-531/532/533/541
Resolution
6,000 to 22,000 counts
Ranging
Auto/manual (model dependent)
Current
Up to 20A (GDM-541/533)
Features
True RMS, temperature, continuity
Interface
USB (GDM-533)
Overview
About GDM-531/532/533/541 Handheld Digital Multimeters
The GDM-530 series handheld digital multimeters cover field service, production line, and educational applications with models ranging from 6,000 counts (GDM-531) to 22,000 counts (GDM-541).
GDM-541 and GDM-533 offer auto/manual ranging with current measurement up to 20A, suitable for power supply testing, motor diagnostics, and industrial maintenance. GDM-532 and GDM-531 provide manual ranging at lower price points for education and basic measurement tasks.
True RMS measurement (GDM-541/532) handles distorted AC waveforms accurately. Temperature measurement (GDM-533/532) via thermocouple supports HVAC commissioning and process verification. Audible/visual overload alarm protects the operator. USB interface on the GDM-533 enables data logging and remote monitoring.
Blog
GW Instek Insights
Battery Simulator vs Battery Emulator: Hardware for BMS and Pack Testing
The bench instrument whose terminals behave like a battery pack, why a plain DC supply leaves BMS code paths unexercised, and the capability list to specify against. Worked through the GW Instek RBS Series battery simulation function.
BESS Test Benches: Rack-Level Charge and Discharge Qualification
The bench that qualifies a storage rack: which voltage classes rack buses land in, the current envelope at top of charge, parallel growth in the class you buy first, and cycling that runs unattended for weeks.
Motor Drive Test Benches: DC Bus Supply and Regenerative Braking
A motor drive bench powered at its DC link terminals needs a bus that supplies the drive and takes energy back when the motor brakes. How one bidirectional source, sized against the real bus voltage, replaces the supply, blocking diode and load.
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