Distributed On-line Monitoring System - ME-811U
The ME-811U is Dynatronic’s next-generation distributed online monitoring system designed for continuous, large-scale structural and equipment monitoring. Using Ethernet communication, it supports flexible combinations of acquisition channels to monitor multiple physical parameters such as stress, acceleration, velocity, temperature, and current. The system can be expanded into a high-capacity testing network with thousands of channels, enabling 24/7 monitoring of operational conditions for large structures. By continuously recording equipment data and providing timely alarms when abnormal conditions or accident precursors are detected, the ME-811U helps capture critical event data for accurate accident analysis, cause investigation, and damage assessment.
Supports long-term continuous monitoring of equipment with configurable acquisition boards for vibration, strain, voltage, temperature, and other measurements.
Uses DMA-based Ethernet communication for stable, uninterrupted multi-channel data transmission and recording with sampling rates up to 128 kHz.
Includes isolation and grounding design for resistance to electrical noise and lightning interference in field environments.
Designed to maintain reliable operation and ensure accurate measurement data.
Can be used in both harsh outdoor environments and indoor spaces such as laboratories and control rooms.
Automatically restores operation after power or network interruptions and supports remote restart functions.
| Channel No. | 11 (8 channels dynamic + 2 channels speed + 1 channel RS485) |
| Communication | Ethernet |
| Sheating Material | Aluminium alloy |
| Depth of Data Blocks Processed by DSP | 1024, 2048, 4096, 8192 |
| Edge Computing Function | |
| Time-domain Analysis | Resampling |
| Amplitude domain analysis | kurtosis value, root mean square value |
| Frequency-domain analysis based on FFT | the top ten frequencies and their amplitudes |
| Order analysis | the amplitudes of 0.5, 1, 1.5, 2, 3, 4, 5 times the frequency shift |
| Startup and shutdown analysis | the amplitude at the critical speed |
| Envelope analysis | peak-to-peak extraction |
| Full-period sampling points No. | 32, 64, 128, 256 |
| Envelope Frequency Range | 500Hz - 10000Hz, adjustable (resonance frequency greater than 30kHz) |
| Tachometer | |
| Type | Electromagnetic tachometer / Magnetic sensitive tachometer / Photoelectric tachometer |
| Power supply | 5VDC/50mA or -24VDC/50mA (by FOC) |
| Measurement range: | 30 - 300,000 RPM (for individual speed measurement); 30 - 15,000 RPM (for bound vibration measurement points); |
| Accuracy: | <0.05% ± 1 RPM |
| RS-485 | |
| Communication mode: | Half-duplex, baud rate 9600bps - 230400bps; |
| Power supply: | 5V DC / 50mA or 12VDC/25mA(by FOC); |
| Channel No.: | 1 channel; (Expandable); |
| Size: | 185×100×50mm; |
| Weight: | Typ. 950g; |
| Instrument Protection: | IP65; |
| Power Supply: | PoE; |
| Strain Acquisition Card: | |
| Channel No. | 4 Channels/ card; |
| Input Impedance: | 10MΩ+10MΩ; |
| Input Mode | DIF_DC |
| Input Strain Range: | 50000με |
| Indication Error: | ±(0.5%red±3με) |
| Zero Drift: | 3με/2h |
| Stability: | 0.1%/2h |
| Nonlinearity: | 0.1% of F.S. |
| Noise: | <2μVRMS |
| Bridge Excitation: | |
| Bridge Configuration | Full, half, three-wire quarter bridge |
| Bridge Completion Resistors | 120Ω(Three-wire quarter bridge) 60Ω~20000Ω(Half bridge/Full bridge) |
| Bridge Voltage | 2V, 5V, 10V, 24V DC Within 0.1% |
| Current | Max. 20mA |
| Strain Gauge Sensitivity Coefficient | 1.0 ~ 3.0 (Auto. calibrating) |
| Sampling Rate | 1.28kHz, 2.56kHz, 5.12kHz, 12.8kHz, 25.6kHz, 51.2kHz, 128kHz, Grade Switching |
| A/D Converter: | 24 bits |
| Freq. Response: | DC~50kHz(-3dB±1dB) |
| On-site Verification Function: | Available |
| Electromagnetic Eddy Current Acquisition Card | |
| Channel No.: | 4 Channels/ card; |
| Sampling Rate | 1.28kHz, 2.56kHz, 5.12kHz, 12.8kHz, 25.6kHz, 51.2kHz, 128kHz, Grade Switching |
| A/D Converter | 24 bits |
| Input Mode | Displacement measurement (AC), gap voltage measurement (DC) |
| Range | 100mV, 500mV, 1V, 5V, 10V(By FOC) |
| Power Supply for Sensor | 24V(Max.4mA) |
| System Uncertainty | <0.5% of F.S. |
| Freq. Response | 0.1~10kHz(-3dB±1dB) |
| Accuracy | <0.5% F.S. |
| Stability | 0.05%/h |
| Linearity | 0.1%F.S. |
| Distortion | <0.5% |
| Anti-aliasing Filter: | |
| Filter type | An anti-interference filter combining independent analog filtering for each channel and real-time digital filtering; |
| Cut-off frequency | 1/2.56 of sampling rate |
| Stop-band attenuation: | -120dB/Oct. |
| Flatness: | ±0.1dB Within analysis frequency range |
| Input Protection | If the input signal exceeds ±15V (either DC or AC peak), full input protection is activated; |
| Single Integral | 1Hz to 1KHz or 10Hz to 10kHz or no integration(Error<3%)(by FOC) |
| Current Acquisition Card: | |
| Channel No.: | 4 Channels/ card; |
| Sampling Rate | 1.28kHz, 2.56kHz, 5.12kHz, 12.8kHz, 25.6kHz, 51.2kHz, 128kHz, Grade Switching |
| A/D Converter | 24 bits |
| Input Mode | DC, GND |
| Range | 4 - 20mA (full scale 5V @ 250Ω) |
| Power Supply | 24V(Max.50mA) |
| System Uncertainty | <0.5% of F.S. |
| Freq. Response | 0.1~5kHz(-3dB±1dB) |
| Accuracy | <0.5% F.S. |
| Stability | 0.05%/h |
| Linearity | 0.1%F.S. |
| Distortion | <0.5% |
| Anti-aliasing Filter: | |
| Filter type | An anti-interference filter combining independent analog filtering for each channel and real-time digital filtering; |
| Cut-off frequency | 1/2.56 of sampling rate |
| Stop-band attenuation: | -120dB/Oct. |
| Flatness: | ±0.1dB Within analysis frequency range |
| Input Protection | If the input signal exceeds ±15V (either DC or AC peak), full input protection is activated; |
| Single Integral | 1Hz to 1KHz or 10Hz to 10kHz or no integration(Error<3%)(by FOC) |
| Voltage Acquisition Card: | |
| Channel No.: | 4 Channels/ card; |
| Sampling Rate | 1.28kHz, 2.56kHz, 5.12kHz, 12.8kHz, 25.6kHz, 51.2kHz, 128kHz, Grade Switching |
| A/D Converter | 24 bits |
| Input Mode | AC, SIN-DC, DIF-DC(by FOC) |
| Range | 100mV, 500mV, 1V, 1.25V, 5V, 10V(by FOC) |
| System Uncertainty | <0.5% of F.S. |
| Freq. Response | 0.1~50kHz(-3dB±1dB) |
| Accuracy | <0.5% F.S. |
| Stability | 0.05%/h |
| Linearity | 0.1%F.S. |
| Distortion | <0.5% |
| Anti-aliasing Filter: | |
| Filter type | An anti-interference filter combining independent analog filtering for each channel and real-time digital filtering; |
| Cut-off frequency | 1/2.56 of sampling rate |
| Stop-band attenuation: | -120dB/Oct. |
| Flatness: | ±0.1dB Within analysis frequency range |
| Input Protection | If the input signal exceeds ±15V (either DC or AC peak), full input protection is activated; |
| Single Integral | 1Hz to 1KHz or 10Hz to 10kHz or no integration(Error<3%)(by FOC) |
| On-site Verification Function: | Available |
| Temperature Acquisition Card: | |
| Channel No.: | 4 Channels/ card |
| Sampling Rate | 256Hz |
| Sensor Type | PT10, PT100, PT1000 |
| Range | -200℃ ~ 850℃ |
| Accuracy | 0.5%±0.5℃ |
| Constant current source (Iout) | 1mA |
| DT1C330ET Acquisition Card: | |
| Channel No.: | 4 Channels/ card;(3-channel vibration + 1-channel temperature) |
| Sampling Rate | 1.28kHz, 2.56kHz, 5.12kHz, 12.8kHz, 25.6kHz, 51.2kHz, 128kHz, Grade Switching |
| A/D Converter | 24 bits |
| Input Voltage | 5V DC～12V DC/30mA MAX |
| Input Mode: | |
| Vibration | AC |
| Temp. | DIF_DC |
| Range: | |
| Vibration | 100mV, 500mV, 1V, 1.25V, 5V,(by FOC) |
| Temp. | -40℃～120℃ |
| System Uncertainty | <0.5% of F.S. |
| Vibration Freq. Response | 0.5~50kHz(-3dB±1dB) |
| Temp. Accuracy | ±3℃ |
| Stability | 0.05%/h |
| Linearity | 0.1%F.S. |
| Depth of data block processed by DSP | 1024 to 8192 (configurable); |
| On-site Verification Function: | Available |
| DT1C130ET Acquisition Card: | |
| Channel No. | 8 Channels/ card;(4-channel vibration + 4-channel temperature) |
| Sampling Rate | 1.28kHz, 2.56kHz, 5.12kHz, 12.8kHz, 25.6kHz, 51.2kHz, 128kHz, Grade Switching |
| A/D Converter | 24 bits |
| Input Voltage | 5V DC～12V DC/30mA MAX |
| Input Mode | |
| Vibration | AC |
| Temp. | DIF_DC |
| Range | |
| Vibration | 100mV, 500mV, 1V, 1.25V, 5V (by FOC) |
| Temp. | -40°C～120°C |
| System Uncertainty | <0.5% of F.S. |
| Vibration Freq. Response | 0.5~50kHz(-3dB±1dB) |
| Temp. Accuracy | <±3°C |
| Stability | 0.05%/h |
| Linearity | 0.1%F.S. |
| Depth of data block processed by DSP | 1024 to 8192 (configurable) |
| On-site Verification Function | Available |
| Environmental Conditions | |
| Operating Temperature | -10°C to 50°C |
| Operating Humidity | 20 ~ 90%RH@50°C |
| Storage Temperature | -40°C to 70°C |
| Storage Humidity | 90% RH 24h@60°C |
| Vibration | Frequency cycle range: 5Hz ~ 55Hz ~ 5Hz Drive amplitude (peak): 0.19mm Sweep frequency: ≤10ct./min Duration of resonant: 10min Vibration direction: x, y, z |
Figure 1 Single System Block Diagram
Figure 2 Multi-system Block Diagram
PHM Monitoring Software
1. System Architecture
B/S Architecture: Based on browser/server architecture, enabling equipment management over local LAN and internet networks.
2. Core Functions
Remote Monitoring: Real-time monitoring of field equipment operating status from remote locations.
Real-Time Monitoring & Analysis: Supports continuous real-time data acquisition and analysis.
User Management: Multi-level user permission management for secure system access.
Data Storage: Reliable storage of historical and real-time monitoring data.
Alarm Setting: Configurable alarm thresholds for conditions with notification capabilities.
Power-Off Self-Recovery: Automatic system recovery after power interruption, ensuring operational continuity.
Fault Setting: Configurable fault condition definitions and corresponding response mechanisms.
3. Built-In Analysis Algorithms
Correlation Analysis: Analyzes relationships between different monitoring parameters.
Statistical Analysis: Provides statistical processing and evaluation of monitoring data.
Strain Rosette Calculation: Calculates principal stress and strain direction using strain rosette data.
Trend Analysis: Tracks long-term trends of monitored parameters for predictive insights.
Spectrum Analysis: Performs frequency domain analysis for vibration and dynamic signal processing.
| Accessories | |
|---|---|
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ME-811U Main Controller:
Multiple types of acquisition cards can be freely combined and configured to monitor various physical quantities such as vibration, strain, voltage, and temperature; Communication/Power supply method: Ethernet and PoE power supply; Channel No. : 2-acquisition cards + 2-tachometer channels + 1-485 channel; Tachometer Power Supply: DC5V/50mA or DC-24V/50mA (determined during order placement); Instrument Protection: IP65 |
 |
| Strain Acquisition Card(Option):
Channel No.: 4 channels/card, maximum sampling frequency 128kHz; Bridge supply voltage: 2V, 5V, 10V, 24V (choose one of them); Bridge configuration: three-wire 1/4 bridge (120Ω or 350Ω), half-bridge, full-bridge(choose one of them); Quadrant bridge resistance value: 120Ω, 350Ω(choose one of them); Output range: ±50000με; Low-pass cut off frequency: 1kHz, 5kHz, 10kHz, 50kHz, PASS(choose one of them) |
|
| IEPE Acquisition Card(Option):
Channel No.: 4 channels per card, maximum sampling frequency 128kHz, Range: ±100mV, ±500mV, ±1V, ±5V, ±10V (choose one of them); Low-pass cut off frequency: 1kHz, 5kHz, 10kHz, 50kHz, PASS(choose one of them); Integration type: no integration, single integration 1Hz to 1kHz or single integration 10Hz to 10kHz(choose one of them); | |
| Electromagnetic Eddy Current Acquisition
Card(Option): Channel No.: 4 channels/card, maximum sampling frequency 128kHz; Range: ±100mV, ±500mV, ±1V, ±5V, ±10V(choose one of them); Power supply: DC-24V/50mA; Low-pass cutoff frequency: 1kHz, 5kHz, 10kHz, 50kHz | |
| Current Acquisition Card(Option):
Channel No.: 4 channels/card, maximum sampling frequency 12.8kHz; Suitable for adjustment and data acquisition of 4-20mA output signals from sensors using two-wire or three-wire connection methods; Range: 4-20mA; Power supply: DC24V/50mA; Low-pass cut off frequency: 1kHz, 5kHz, 10kHz, 50kHz, PASS(choose one of them) |
|
| Voltage Acquisition Card(Option):
Channel count: 4 channels/card, maximum sampling frequency 128kHz; Range: ±100mV, ±500mV, ±1V, ±5V, ±10V (choose one of them); Integration type: no integration, single integration 1Hz - 1kHz or single integration 10Hz - 10kHz (choose one of them); Excitation voltage: 5V, 12V, 24V (choose one of them); Low-pass cutoff frequency: 1kHz, 5kHz, 10kHz, 50kHz, PASS(choose one of them) |
|
| Temperature Acquisition Card(Option):
Channel count: 4 channels/card, maximum sampling frequency 12.8kHz; Sensor: PT10, PT100, PT1000(choose one of them) |
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| DT1C330ET Acquisition Card(Option):
Specifically designed for 3-Axis DT1C330ET Vibration-Temperature Integrated Sensor; |
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| DT1C130ET Acquisition Card(Option):
Specifically designed for 1-Axis DT1C130ET Vibration-Temperature Integrated Sensor |
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| PoE Switch(Option) |  |
| Gigabit Network Cable:
5m |
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| Copper Core Nylon Cable Cap (with Copper Core):
3mm |
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| Packing Case:
3U |
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| Fuse:
2A |
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| Software USB drive |  |