ASTM D7279 Automated Kinematic Viscometer By Houillon Method
ASTM D7279 Automated Kinematic Viscometer by Houillon Method
I. Overview
This houillon kinematic viscosity tester complies with ASTM D7279 standards, delivering results consistent with ASTM D445 and GB/T265 methods. Featuring a modular design, it integrates high-precision sensors, advanced AD conversion circuits, and industrial-grade 32-bit RISC microprocessors for ultra-low power consumption and reliable communication. The system combines streamlined software with robust hardware to automate temperature control, liquid-level detection, timing, calculations, and printing.
1.1 Instrument Appearance
1.2 Key Features
User Interface: Imported LCD display with touch-sensitive keys.
Sample Versatility: Measures transparent and opaque liquids (e.g., gasoline, diesel, kerosene, lubricants, cutting fluids, new/in-service oils).
Efficiency: Low sample/reagent consumption, rapid detection, and high accuracy.
Convenience: Dedicated oil drain port; motorized stirring for uniform temperature.
Automation: Dual-CPU control; simultaneous testing of 4 samples; automatic result printing.
Precision: Digital PID temperature control (±0.01°C); infrared liquid-level detection.
Visibility: Energy-efficient bath lighting for clear process observation.
II. Technical Specifications
| Category | Details |
|---|---|
| Display | LCD |
| Temperature Range | Ambient to 100°C (circulating chiller required below ambient) |
| Temperature Control | ±0.01°C accuracy; 0.01°C resolution |
| Viscosity Range | 0.75–6800 mm²/s; resolution: 0.0001 mm²/s |
| Sample Volume | 0.1–2.0 mL |
| Viscometer Type | Hou's capillary |
| Test Capacity | 4 independent channels (asynchronous operation) |
| Calibration | 6-point temperature calibration |
| Data Storage | 100 test results |
| Heating | 1500W electric PID; bath volume: 10L |
| Cleaning/Drying | Manual capillary cleaning; automatic drying |
| Output | RS232 interface |
| Environmental | 5–40°C; ≤85% RH; AC 220V±22V, 50Hz±5Hz |
| Dimensions/Weight | 320 × 440 × 600 mm; 30 kg |
Working Principle
Under the conditions specified by ASTM D7279, D445 and D446, the sample to be tested is injected into the folded tube viscometer through the sampler. It is automatic timing through interval between the upper and lower detection lines of the sample passing through the viscosity tube, the viscosity value is obtained and stored after using the time multiply by the viscosity tube coefficient.
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