Jianhu CMJ Series Water Resistance Test Chamber
| Brand | Jianhu |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | CMJ |
| Pricing | Available Upon Request |
| Turntable Speed | 4–17 rpm (adjustable) |
| Nozzle Rotation Speed | 23 rpm |
| Weight | 350 kg |
| Chamber Dimensions (W×H×D) | 100 × 100 × 100 cm |
| Overall Dimensions (W×H×D) | 145 × 200 × 130 cm |
| Flow Rates | R1 = 1.8 L/min, R2 = 3.2 L/min, S1 = 24.5 L/min, S2 = 39.2 L/min |
| Spray Pressures | R1 = 0.1 kg/cm², R2 = 0.3 kg/cm², S1 = 1.0 kg/cm², S2 = 3.0 kg/cm² |
| Operating Temperature Range | Ambient to 85 °C |
| Power Supply | 220 V, 5 kW (WIT-RAIN-A) |
Overview
The Jianhu CMJ Series Water Resistance Test Chamber is an engineered environmental simulation system designed to evaluate the ingress protection (IP) performance of industrial components and enclosures under controlled water exposure conditions. Based on the principles of calibrated spray impact, dynamic rotation, and thermal regulation, the chamber replicates real-world hydrodynamic stress scenarios—including oscillating rainfall, high-pressure jetting, and immersion-simulated wetting—per ISO 20653, IEC 60529 (IPX3–IPX6), SAE J575, and MIL-STD-810H Method 506.5. Unlike static drip or simple hose-test setups, the CMJ integrates synchronized turntable motion (4–17 rpm) with precisely rotating nozzles (23 rpm) to ensure uniform, repeatable angular coverage across complex 3D geometries—critical for validating automotive lighting assemblies, avionics housings, missile guidance modules, radar domes, and aerospace sensor enclosures.
Key Features
- Programmable dual-axis rotational architecture: Independent control of specimen turntable (4–17 rpm, stepless adjustment) and spray nozzle carousel (fixed 23 rpm) enables full 360° circumferential exposure without manual repositioning.
- Multi-tier hydraulic delivery system: Four selectable flow/pressure configurations (R1/R2/S1/S2) support standardized test profiles—from low-intensity rain simulation (IPX3) to high-velocity water jet resistance (IPX6), with pressure stability maintained ±0.02 kg/cm² under load.
- Thermally regulated test volume: Integrated heating system maintains ambient-to-85 °C operational range within the 100 L test chamber, enabling combined thermal-hydraulic stress testing per IEC 60068-2-14 and ASTM D4329.
- Structural integrity and safety compliance: Constructed from 304 stainless steel interior and reinforced powder-coated carbon steel frame; includes overtemperature cutoff, water-level monitoring, and emergency stop circuitry meeting CE machinery directive requirements.
- Modular electrical interface: Dual power variants (5 kW / 9 kW) accommodate both standard laboratory environments (WIT-RAIN-A) and high-capacity production-line validation (WIT-RAIN-B), with dedicated 220 V AC input and grounded NEMA L6-30P receptacle.
Sample Compatibility & Compliance
The CMJ chamber accommodates specimens up to 90 cm in maximum dimension, including headlamps, instrument clusters, navigation system casings, missile arming units, and UAV payload enclosures. Its open-top design with removable access panel allows rapid fixture mounting using standardized T-slot rails and adjustable clamping brackets. All operational parameters—including rotation speed, spray duration, temperature setpoint, and cycle sequencing—are traceable and auditable, supporting GLP-compliant documentation workflows. The system satisfies functional verification requirements for ISO/IEC 17025-accredited laboratories and aligns with FDA 21 CFR Part 11 data integrity expectations when paired with validated software logging.
Software & Data Management
While the base CMJ configuration operates via front-panel digital controllers with LED status indicators, optional PC-based control software (Jianhu TestSuite v3.2) provides automated test sequencing, real-time parameter logging (timestamped RPM, pressure, temperature, elapsed time), and CSV export for statistical process control (SPC). Audit trails record operator ID, method version, calibration date, and deviation flags—enabling full traceability for internal quality audits or third-party certification reviews. Software validation documentation (IQ/OQ protocols) is available upon request for regulated industries.
Applications
- Automotive: Headlamp lens sealing validation (SAE J175), wiper motor housing IP rating verification, ECU enclosure water intrusion testing.
- Aerospace & Defense: Radar radome hydrophobic coating durability assessment, missile seeker dome thermal-shock + water impact cycling, inertial navigation system environmental qualification.
- Consumer Electronics: Smartwatch gasket integrity testing, outdoor camera housing IP67/IP68 pre-certification screening, battery pack enclosure leak path analysis.
- Industrial Equipment: Control panel NEMA 4X equivalency checks, motor drive cabinet ingress resistance mapping, solar inverter junction box validation.
FAQ
What IP ratings can the CMJ chamber validate?
The system supports full compliance testing for IPX3 (oscillating shower), IPX4 (splashing water), IPX5 (water jet), and IPX6 (powerful water jet) per IEC 60529, with optional fixtures enabling IPX7 (temporary immersion) correlation studies.
Is calibration documentation included with shipment?
Yes—each unit ships with a factory calibration certificate covering turntable speed accuracy (±0.2 rpm), pressure transducer linearity (±1% FS), and temperature uniformity (±2 °C across chamber volume), traceable to NIM (China National Institute of Metrology).
Can the chamber be integrated into an existing environmental test lab network?
Standard RS-485 Modbus RTU and optional Ethernet TCP/IP interfaces allow seamless integration with LabVantage, TrackWise, or custom MES platforms for centralized test execution and data aggregation.
What maintenance intervals are recommended?
Nozzle inspection and descaling every 200 operational hours; turntable bearing lubrication every 1,000 hours; annual pressure sensor recalibration and water filtration system replacement per preventive maintenance schedule provided in the technical manual.
