DH5902N rugged dynamic data acquisition system, up to 32 channels per unit, measuring strain, voltage and IEPE acceleration for bridge testing.
Overview
The DH5902N is a rugged multi-channel dynamic data-acquisition system in an aluminium fan-cooled chassis with plug-in boards, 4 channels per board and up to 32 channels per unit, expandable to unlimited channels over Gigabit Ethernet. A built-in signal conditioner directly measures resistance strain, voltage and IEPE accelerometer inputs without external conditioning; external conditioners extend to charge, current and resistance. It supports full/half/three-wire quarter bridges with four-wire excitation for remote bridge accuracy, and recognises smart leads (EID) and TEDS transducers. With an embedded industrial PC, shock-mounted SSD and rechargeable battery, it supports online/offline modes; it withstands 100 g shock, -20 to +60C and IP65, making it suitable for unattended long-term recording in strong vibration, wide temperature and high humidity. Widely used in structural dynamics testing for aerospace, automotive, rail transit, shipbuilding, machinery and defence.
Applications
• Road and highway engineering laboratory testing
• Construction material quality control and acceptance
• Research and teaching laboratories
• Third-party inspection and certification bodies
Features
• High measurement accuracy with stable repeatability
• Robust construction suitable for both laboratory and field use
• Compliant with relevant Chinese and international testing standards
• Complete with calibration certificate and operation manual
Technical Specifications
| Item | Specification |
| Channels | 4/ch, up to 32/unit, expandable over Ethernet |
| Interface | Gigabit Ethernet + Wi-Fi |
| Voltage range | ±20 mV to ±10 V, multi-range |
| Voltage error | ≤0.3% |
| Strain range | ±1000 / ±10000 / ±100000 µε |
| Strain error | ±(0.5% rdg ±3 µε) |
| Bridge | full / half / three-wire quarter |
| Excitation | four-wire, lead-resistance independent |
| Inputs | strain, voltage, IEPE; optional charge/current/Ω |
| Sampling | per-channel simultaneous A/D |
| Modes | online / offline, seamless switch |
| Power | built-in battery, ≥4h at 32 ch |
| Ruggedness | 100 g shock, -20 to +60°C, IP65 |
| Sensor ID | EID smart lead, TEDS |
| Applications | aerospace, automotive, rail, ship structural dynamics |
Standards
GB/T, JTG, ASTM
Standard Delivery
• Main instrument unit
• Power cable
• Operation manual
• Dedicated analysis software (PC)
• Spare parts kit
FAQ
Q1: What standards does the DH5902N Dynamic Strain Data Acquisition System comply with?
A1: The DH5902N Dynamic Strain Data Acquisition System is designed and manufactured in accordance with relevant Chinese national (GB) and transport industry (JTG) standards, as well as applicable ASTM and AASHTO international standards. A calibration certificate traceable to national standards is provided with each unit.
Q2: How often should the DH5902N Dynamic Strain Data Acquisition System be calibrated?
A2: We recommend annual calibration by authorized technicians or by iRoad after-sales service center. For high-frequency laboratory use, semi-annual calibration is advised. The instrument is supplied with a factory calibration certificate.
Q3: What is the lead time and do you provide training?
A3: Standard units are usually shipped within 7-15 working days. Custom configurations may require 20-30 days. iRoad provides on-site installation, commissioning and operator training for major equipment; remote video guidance is available for standard laboratory instruments.
Overview
The DH5902N is a rugged multi-channel dynamic data-acquisition system in an aluminium fan-cooled chassis with plug-in boards, 4 channels per board and up to 32 channels per unit, expandable to unlimited channels over Gigabit Ethernet. A built-in signal conditioner directly measures resistance strain, voltage and IEPE accelerometer inputs without external conditioning; external conditioners extend to charge, current and resistance. It supports full/half/three-wire quarter bridges with four-wire excitation for remote bridge accuracy, and recognises smart leads (EID) and TEDS transducers. With an embedded industrial PC, shock-mounted SSD and rechargeable battery, it supports online/offline modes; it withstands 100 g shock, -20 to +60C and IP65, making it suitable for unattended long-term recording in strong vibration, wide temperature and high humidity. Widely used in structural dynamics testing for aerospace, automotive, rail transit, shipbuilding, machinery and defence.
Applications
• Road and highway engineering laboratory testing
• Construction material quality control and acceptance
• Research and teaching laboratories
• Third-party inspection and certification bodies
Features
• High measurement accuracy with stable repeatability
• Robust construction suitable for both laboratory and field use
• Compliant with relevant Chinese and international testing standards
• Complete with calibration certificate and operation manual
Technical Specifications
| Item | Specification |
| Channels | 4/ch, up to 32/unit, expandable over Ethernet |
| Interface | Gigabit Ethernet + Wi-Fi |
| Voltage range | ±20 mV to ±10 V, multi-range |
| Voltage error | ≤0.3% |
| Strain range | ±1000 / ±10000 / ±100000 µε |
| Strain error | ±(0.5% rdg ±3 µε) |
| Bridge | full / half / three-wire quarter |
| Excitation | four-wire, lead-resistance independent |
| Inputs | strain, voltage, IEPE; optional charge/current/Ω |
| Sampling | per-channel simultaneous A/D |
| Modes | online / offline, seamless switch |
| Power | built-in battery, ≥4h at 32 ch |
| Ruggedness | 100 g shock, -20 to +60°C, IP65 |
| Sensor ID | EID smart lead, TEDS |
| Applications | aerospace, automotive, rail, ship structural dynamics |
Standards
GB/T, JTG, ASTM
Standard Delivery
• Main instrument unit
• Power cable
• Operation manual
• Dedicated analysis software (PC)
• Spare parts kit
FAQ
Q1: What standards does the DH5902N Dynamic Strain Data Acquisition System comply with?
A1: The DH5902N Dynamic Strain Data Acquisition System is designed and manufactured in accordance with relevant Chinese national (GB) and transport industry (JTG) standards, as well as applicable ASTM and AASHTO international standards. A calibration certificate traceable to national standards is provided with each unit.
Q2: How often should the DH5902N Dynamic Strain Data Acquisition System be calibrated?
A2: We recommend annual calibration by authorized technicians or by iRoad after-sales service center. For high-frequency laboratory use, semi-annual calibration is advised. The instrument is supplied with a factory calibration certificate.
Q3: What is the lead time and do you provide training?
A3: Standard units are usually shipped within 7-15 working days. Custom configurations may require 20-30 days. iRoad provides on-site installation, commissioning and operator training for major equipment; remote video guidance is available for standard laboratory instruments.
