Donghua Testing / Dynatronic — Data Acquisition Systems & Dynamic Test Instrumentation

Multichannel DAQ Systems DE-944 and Dynamic Signal Analysis

Multichannel dynamic signal testing platforms DE-944 and DE-926U provide high-accuracy signal digitization during structural dynamics and vibration testing programs.

Chinese manufacturer Donghua Testing / Dynatronic (Jiangsu Donghua Testing Technology Co., Ltd.) engineers advanced measurement hardware for aerospace, rail transit, and heavy civil infrastructure.

Each acquisition channel incorporates a dedicated 24-bit sigma-delta ADC converter reaching sample rates up to 256 kHz, integral 24V/4mA IEPE sensor conditioning, and Gigabit Ethernet data streaming to streamline synchronized multichannel measurements.

Strain Gauge Stations SE-884U and Static Stress Analysis

Multichannel strain measurement systems SE-884U and dynamic platforms SE-98 evaluate mechanical stress and structural strain across industrial assemblies and heavy mechanical equipment.

The instrumentation accommodates full-bridge, half-bridge, and three-wire quarter-bridge Wheatstone configurations.

Integrated digital zero balancing and calibration circuitry guarantee long-term measurement stability. Modular hardware architectures expand from 8, 16, or 24 channels up to comprehensive centralized testing rigs operating at sampling rates up to 5 kHz.

Wireless Telemetry Systems WW-826D for Modal Testing

Wireless measurement systems WW-826D and WW-844D evaluate dynamic structural vibration and modal parameters without running long signal cables. Autonomous testing nodes attach directly to measured machinery using secure magnetic mounting fixtures.

Each remote unit features integrated magnetoelectric velocity sensors, precision signal conditioning, and 2.4 GHz WiFi wireless links communicating up to 200 m line of sight. Internal rechargeable lithium battery packs ensure beyond 10 hours continuous field testing.

Rugged Data Recorders RE-846U for Severe Operating Environments

Onboard data acquisition recorders RE-846U and RU-846 acquire dynamic data across vehicle, airborne, maritime, and defense testing scenarios. The instrumentation utilizes solid milled aluminum alloy enclosures engineered for high mechanical durability.

The hardware resists severe mechanical shock up to 100g on RE-846U and up to 500g on miniature RU-846 recorders. Built-in industrial microcomputers and shock-protected solid-state drives enable dependable standalone data recording from -20 deg C up to +60 deg C.

Continuous Online Vibration Monitoring Platforms ME-84U and ME-82S

Stationary online monitoring systems ME-84U and distributed platforms ME-82S deliver round-the-clock surveillance of vibration severity, mechanical stresses, and temperature gradients across large machinery. Systems install inside standard 19-inch rack enclosures.

The architecture networks beyond 1000 measurement channels over optical fiber and industrial Ethernet backbones. Real-time software compares measured dynamic spectra with preset threshold limits, triggering automated alerts and archiving diagnostic logs for predictive maintenance.

Engineering Selection Criteria for Dynamic Test Systems

Selecting appropriate Donghua Testing / Dynatronic testing systems depends on required channel counts, frequency response bandwidth, sensor types, and environmental duty ratings. Modular PXIe bus platforms provide point-to-point data throughput up to 250 MB/s for real-time closed-loop control.

SpareX engineering specialists provide technical application analysis, instrumentation sizing, sensor matching, and international procurement support for global industrial clients.