Centralized On-line Monitoring System - ME-84U
The ME-84U Centralized On-line Monitoring System, with the use of waterproof and dustproof chassis and 19-inch standard chassis, can be used for the long-term monitoring of various physical quantities such as force, stress, vibration, acceleration, speed, temperature, current. By using Ethernet network communication technology, a large-scale testing system with over a thousand channels can be built to monitor large structures for 24 hours. ME-84U can record the operating parameters of the equipment, and will give an alarm in time in case of failure, and collect as much equipment fault information as possible, so as to provide reliable data for understanding accident phenomena, finding the cause of failure and analyzing the damage caused.
Supports scalable system expansion for large structures with high channel counts.
Designed for reliable operation and accurate data acquisition.
Suitable for harsh outdoor environments and indoor monitoring applications.
Uses DMA-based real-time data transfer for stable, uninterrupted high-speed recording.
Features built-in DSP processing for real-time data analysis.
Includes built-in SSD storage with circular recording and high multi-channel sampling rates.
Supports channel grouping with independent sampling rate settings.
Provides automatic system self-diagnostics for sensors, hardware, and software.
Automatically restores communication after network or power interruptions with watchdog protection.
| Number of slots (Single Chassis) | |
| Standard case | 16 card slots (19" 3U Chassis) |
| Waterproof case | 16 card slots |
| Acquisition card type | Dynamic acquisition card / Static acquisition card (any combination) |
| Instrument Protection | IP54 waterproof case IP50 standard 19" 3U case |
| Built-in Storage Capacity | 32G |
| Power supply | 220VAC / 50Hz |
| Dimensions | 490×370×220mm (Waterproof chassis) 482×50×146mm (19" 3U chassis) |
| Weight | Typ. 17kg (Waterproof chassis) Typ. 6.2kg (19" 3U chassis) |
| Dynamic Acquisition Card | |
| Sampling rate | 1kHz~128kHz, Grade shift |
| 8 Channels/one chassis | Max. 128kHz / channel |
| 16 Channels/one chassis | Max. 51.2kHz / channel |
| 32 Channels/one chassis | Max. 25.6kHz / channel |
| 64 Channels/one chassis | Max. 12.8kHz / channel |
| Built-in DSP system | According to customer requirements, real-time analysis and processing of dynamic FFT, static information, etc., and real-time transmission of the results to the PC. |
| Dynamic IEPE Acquisition Card | |
| Channel No. | 4 channels/card |
| A/D Converter | 24-bit |
| Offset | <1mV |
| Sampling Rate (continuous) | 1kHz, 1.28kHz, 2kHz, 2.56kHz, 5kHz, 5.12kHz, 10kHz, 12.8kHz, 20kHz, 25.6kHz, 50kHz, 51.2kHz, 100kHz, 128kHz |
| Power Supply | 24VDC / 4mA constant current |
| Voltage range | ±1V, ±5V, ±10V (By FOC) |
| Input Protection | input signal greater than ±15V (DC or AC peak), input full protection |
| System Accuracy | <0.5% F.S |
| System Stability | 0.05%/h |
| Linearity | 0.1% F.S |
| Distortion | ≤0.5% |
| Analog Double Integration | 1Hz ~ 1kHz or 10Hz ~ 10kHz Amplitude error: <3% |
| One-time Integration | 1Hz ~ 100Hz or 10Hz ~ 1kHz Amplitude error: <5% |
| Dynamic Strain Acquisition Card | |
| Channel No. | 4 channels/card |
| A/D Converter | 24-bit |
| Sampling Rate (continuous) | 1kHz, 1.28kHz, 2kHz, 2.56kHz, 5kHz, 5.12kHz, 10kHz, 12.8kHz, 20kHz, 25.6kHz, 50kHz, 51.2kHz, 100kHz, 128kHz |
| Bridge Voltage | 2V (By FOC) |
| Range | 1000με, 10000με, 100000με (By FOC) |
| Bridge Mode | three-wire system quarter bridge, half bridge, full bridge |
| Bridge Resistance for Strain Gauge | |
| Half bridge, full bridge | 50Ω ~ 10000Ω |
| Three-wire 1/4 bridge | 120Ω or 350Ω (By FOC) |
| Automatic Balance Range | ±20000με |
| Strain Indication Error | ± (0.5%red±3με) |
| Dynamic Current Acquisition Card | |
| Channel No. | 4 channels/card |
| A/D Converter | 24-bit |
| Sampling Rate (continuous) | 1kHz, 1.28kHz, 2kHz, 2.56kHz, 5kHz, 5.12kHz, 10kHz, 12.8kHz, 20kHz, 25.6kHz, 50kHz, 51.2kHz, 100kHz, 128kHz |
| Suitable for | two wire system or three wire system 4–20mA sensor |
| Power Supply | 24VDC (Max current 50mA) |
| Measuring Range | 4–20mA |
| Dynamic Voltage Acquisition Card | |
| Channel No. | 4 channels/card |
| A/D Converter | 24-bit |
| Sampling Rate (continuous) | 1kHz, 1.28kHz, 2kHz, 2.56kHz, 5kHz, 5.12kHz, 10kHz, 12.8kHz, 20kHz, 25.6kHz, 50kHz, 51.2kHz, 100kHz, 128kHz |
| Supply Voltage of Sensor | 5V, 12V, 24V, ±15V (By FOC) |
| Range | ±1V, ±10V (By FOC) |
| Accuracy | 0.5% FS |
| Static Strain Acquisition Card | |
| Channel No. | 4 channels/card |
| A/D Converter | 24-bit |
| Sampling Rate (continuous) | 1Hz, 2Hz, 5Hz, 10Hz, 20Hz, 50Hz, 100Hz, 200Hz, Range switching |
| Bridge Supply Voltage | 2V, 5V, 10V (By FOC) |
| Measuring Range | 1000με, 10000με, 100000με (By FOC) |
| Bridge Mode | three wire system quarter bridge, half bridge, full bridge |
| Bridge Resistance for Strain Gauge | |
| Half bridge, full bridge | 50Ω ~ 10000Ω |
| three-wire 1/4 bridge | 120Ω or 350Ω (By FOC) |
| Automatic Balance Range | ±20000με |
| Strain Indication Error | ± (0.5%red ±3με) |
| Static Voltage Acquisition Card | |
| Channel No. | 4 channels/card |
| A/D Converter | 24-bit |
| Sampling Rate (continuous) | 1Hz, 2Hz, 5Hz, 10Hz, 20Hz, 50Hz, 100Hz, 200Hz, Range switching |
| Bridge Supply Voltage | 5V, 12V, 24V (By FOC) |
| Measuring Range | ±1V, ±5V, ±10V (By FOC) |
| Accuracy | 0.5% FS |
| Static Current Acquisition Card | |
| Channel No. | 4 channels/card |
| A/D Converter | 24-bit |
| Sampling Rate (continuous) | 1Hz, 2Hz, 5Hz, 10Hz, 20Hz, 50Hz, 100Hz, 200Hz, Range switching |
| Suitable for | two wire system or three wire system 4–20mA sensor |
| Power Supply | 24VDC |
| Measuring Range | 4–20mA |
| Temperature Acquisition Card | |
| Channel No. | 4 channels/card |
| A/D Converter | 24-bit |
| Sampling Rate (continuous) | 1Hz, 2Hz, 5Hz, 10Hz, 20Hz, 50Hz, 100Hz, 200Hz, Range switching |
| Applicable Sensor Type | PT10, PT100, PT1000 |
| Measuring Range | -200°C ~ 850°C |
| Measuring Accuracy | 0.5% ±0.5°C |
| Constant Current Source | 1mA |
| Accuracy | 1% FS |
| Static DIO Card | |
| Number of Channels | 4 channels DI/card |
| DI contact type | can be wet contact or dry contact |
| Max. output voltage of power output channel | 24V / 1A |
| DO supports the selection of two signal output conditions: | manual and channel trigger |
| Static Thermocouple Card | |
| Channel No. | 4 channels/card |
| A/D Converter | 24-bit |
| Sampling Rate (continuous) | 1Hz, 2Hz, 5Hz, 10Hz, 20Hz, 50Hz, 100Hz, 200Hz, Range switching |
| Thermocouple Type | S, K, B, E, J, T, etc |
| Measuring Range | according to the type of thermocouple and indexing table |
| Default measurement | relative temperature (To measure absolute temperature by FOC) |
| Accuracy | 0.5% FS |
| Static Magnetoelectric Acquisition Card | |
| Channel No. | 4 channels/card |
| A/D Converter | 24-bit |
| Sampling Rate (continuous) | 1Hz, 2Hz, 5Hz, 10Hz, 20Hz, 50Hz, 100Hz, 200Hz, Range switching |
| Range | ±5V |
| Input Mode | SIN_DC |
| Excitation Voltage | 1.5V |
| Excitation Frequency | 1Hz, 10Hz |
| Support magnetoelectric speed sensor in situ self-calibration function (With the DT2D001A sensor) | |
| Accuracy | 0.5% FS |
| Tachometer Acquisition Card | |
| Number of channels | 2 channels/card |
| Power Supply | DC5V, DC-24V 50mA |
| Measuring Range | 30 ~ 30000RPM |
| Accuracy | <0.05% ±1RPM |
| Real-time Order Analysis Card | |
| Number of Channels | 1 channel/card |
| Tachometer Measurement | |
| Type | Electromagnetic vortex tachometer, magnetic sensitive tachometer, photoelectric tachometer |
| Range | 30 - 300,000 RPM (separate rotational speed measurement) 30 - 15,000 RPM (bonded vibration measurement point) |
| Accuracy | <0.05% ±1RPM |
| Power Supply | DC5V, DC-24V 50mA |
| Built-in DSP system for real-time multi-channel order analysis of output signals of a specified group of channels | |
| Spectrum analysis and envelope analysis can be carried out on the output signals of this group of data acquisition system | |
| Vibration Temperature Card | |
| Compatibility | Can work with DT1851/DTTA902/DT903/TT904E vibration temperature sensor |
| A/D Converter | 24-bit |
| Sampling Rate (continuous) | 1kHz, 1.28kHz, 2kHz, 2.56kHz, 5kHz, 5.12kHz, 10kHz, 12.8kHz, 20kHz, 25.6kHz, 50kHz, 51.2kHz, 100kHz, 128kHz, Range switching |
| Power Supply | 24V / 4mA IEPE channel |
| Range | Temp: -20°C~80°C |
| Input Mode | IEPE |
| Number of Channels | 4 channels/card (2-channel IEPE+ 2-channel voltage/temperature, differential input mode) |
| Indication Error | <0.5% of F.S. |
| Input Protection | input signal exceeds ±15V (either DC or AC peak), full input protection is activated |
| Electromagnetic Eddy Current Acquisition Card | |
| Channel No. | 4 channels/card |
| A/D Converter | 24-bit |
| Sampling Rate (continuous) | 1kHz, 1.28kHz, 2kHz, 2.56kHz, 5kHz, 5.12kHz, 10kHz, 12.8kHz, 20kHz, 25.6kHz, 50kHz, 51.2kHz, 100kHz, 128kHz |
| Power Supply | 5VDC, 12VDC, 24VDC (by FOC) |
| Max. output Current | 100mA (5VDC), 40mA (12VDC), 20mA (-24VDC), 20mA (+24VDC) |
| Gap Voltage Range (DC) | ±30V |
| Gap Voltage Measurement Accuracy | 1% FS |
| Range (AC) | ±100 mV, ±1000 mV, ±5000mV (by FOC) |
| Accuracy | 0.3% FS |
| RS485 Bus Card | |
| Channel No. | 1 channel/card |
| Power Supply | DC12V (Max. current: 100mA) |
| Sampling Rate (continuous) | <1Hz |
| Protocol Support | Supports standard 485 (Modbus RTU) protocol connection. Non-standard 485 protocols require customization, with protocol parsing format provided by the user. |
| Environmental Conditions | |
| Operating Temperature | 0°C to 40°C |
| Operating Humidity | 20 ~ 90%RH@40°C |
| Storage Temperature | -40°C to 60°C |
| Storage Humidity | 90%RH24h@50°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-84U 19" 3U Chassis:
19-inch 3U standard chassis; Ethernet communication with the host computer; Real-time transmission of all measurement point characteristic values; Host computer control, real-time transmission of time- domain signals of each measurement point; Storage of time-domain signals before and after the event occurrence; Real-time calculation of characteristic values and event identification; Alarm output; Can control 16 acquisition card slots; 32G electronic hard disk; Working power supply: 220VAC. |
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| ME-84U Waterproof/Dustproof Chassis:
Anti-moisture, dust-proof, and anti-electromagnetic interference frame, suitable for installation in industrial sites; Ethernet and upper computer communication; Real-time transmission of all measurement point characteristic values; Upper computer control, real-time transmission of time-domain signals of each measurement point; Storage of time-domain signals before and after event occurrence; Real-time calculation of characteristic values and event identification; Alarm output; Control of 8 acquisition card slots; 32G electronic hard disk; Working power supply: 220VAC; |
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| Dynamic IEPE Acquisition Card(Option):
4 channels; IEPE input mode; The maximum sampling rate for each channel is 128kHz; Range: 1V, 5V, 10V, choose any one; |
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| Dynamic Strain Acquisition Card(Option):
4 channels, Each channel has a maximum sampling rate of 128kHz; Bridge voltage: 2V, 5V, 10V, choose any one; Bridge resistance: 120Ω, 350Ω, choose any one; Range: 1mV, 10mV, 100mV, choose any one; |
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| Static Strain Acquisition Card(Option):
4 channels, Each channel has a maximum sampling rate of 200Hz; Bridge voltage: 2V, 5V, 10V, choose any one; Bridge resistance: 120Ω, 350Ω, choose any one; Range: 1mV, 10mV, 100mV, choose any one; |
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| Dynamic Voltage Acquisition Card(Option):
4 channels, Each channel has a maximum sampling rate of 128kHz; Power supply: 5V or 12V,choose any one; Range: 5V or 10V choose any one; |
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| Static Voltage Acquisition Card(Option):
4 channels; Each channel has a maximum sampling rate of 200Hz; Power supply: 5V or 12V,choose any one; Range: 5V or 10V choose any one; |
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| Dynamic Current Acquisition Card(Option):
4 channels; Power supply: 24VDC; Maximum sampling rate/channel: 128kHz; Range: 4 - 20mA; |
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| Static Current Acquisition Card(Option):
4 channels; Power supply: 24VDC; Maximum sampling rate/channel: 200Hz; Range: 4 - 20mA; |
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| Electromagnetic Eddy Current Acquisition Card(Option):
4 channels; Power supply: 5V, 12V, 24V, -24V, choose any one; The maximum sampling rate for each channel is 128kHz; Range: 100mV, 1V, 5V, 10V, select one of them. |
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| Temperature Acquisition Card(Option):
4 channels; Sensor Type: PT10, PT100, or PT1000,choose any one; The maximum sampling rate for each channel is 200Hz; |
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| Static Thermocouple Card(Option):
4 channels; Sensor type: Supports common thermocouples such as K-type, T-type, and E-type; Connection type: Two-wire; Range: ±50mV; Channel No.: 4 channels/card |
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| Real-time Order Analysis Card(Option):
1 Channel tachometer measurement; Built-in DSP system, which conducts multi-channel order analysis on the real-time output signals of a specified set of data acquisition systems; It can also perform spectrum analysis and envelope analysis on these output signals of the data acquisition system. |
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| Vibration Temperature Card(Option):
Power supply: 24V/4mA; Range: ±5V; Channels: 4 channels/card (2 channels IEPE + 2 channels voltage/temperature, differential input mode); Specific for ME-84U, connected to Dynatronic vibration temperature sensor. Each acquisition card can only connect 2 sensors; |
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| Tachometer Acquisition Card(Option):
Channel No.: 2 Power supply: DC 5V, DC -24V 50mA; Tachometer measurement range: 30 - 300000 RPM |
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| RS485 Bus Card(Option):
1 channel/card; Standard RS485 protocol; The user needs to provide the protocol parsing format; Special requirements by FOC |
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| C4 Cable:
4 channel. Default 5m bare cable or 1.5 m cable with bridge box. |
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| Power Cable:
Three-phase power cable |
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| Gigabit Network Cable:
5m |
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| BNC Patch Cord:
One a DB-26 connector and other is a BNC female connector 0.1m |
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| BNC Cable (Option):
Signal connection cable, two BNC connectors |
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| IEPE Signal Input Cable(Option):
Signal connection cable, one BNC connector, one L5 connector |
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| L5 Cable(Option):
low noise cable |
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| Gigabit Switch(Option):
Used for network expansion of multiple instruments |
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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 |  |