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Portable Automatic Kinematic Viscometer for On-Site Oil Quality Inspection HM-YN4

【Introduction】Portable automatic kinematic viscometer housed in a rugged three-proof engineering case, requiring only 0.3 mL micro-sample volume, featuring integrated automatic cleaning and drying, 24V lithium battery operation (up to 16h at 40°C), and ASTM D445/D446/D7279 compliance.

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Product details

Kinematic viscosity tester with constant temperature glass bath and capillary measurement ports

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Technical specifications comparison table for HM-YN1 HM-YN2 and HM-WYN kinematic viscosity testers

Technical specifications comparison table for HM-YN3-1 and HM-YN3-2 fully automatic viscosity testers

Technical specifications table for HM-YN4 portable automatic kinematic viscometer

Shandong Hengmei Electronic Technology corporate headquarters team and instrument manufacturing facility

Laboratory research analysts performing analytical sample testing and instrument calibration workflows

Product Overview

For marine engineering teams, mining haul truck maintenance depots, aerospace ground crews, and power utility substations, transporting oil samples back to a centralized testing laboratory frequently causes critical maintenance delays. The HM-YN4 brings automated viscometric analysis directly to the machinery point of care. Complying with international standards including ASTM D445, ASTM D446, and ASTM D7279, its dual capillary viscometer design delivers 100-fold dynamic range coverage (customizable within 1 ~ 2000 mm²/s) for both transparent and dark opaque fluids without manual wash intervention.

Key Features

Rugged mobile design: fully integrated within a customized three-proof engineering protective case
Rapid sample throughput: completes full viscosity measurement cycle in approximately 3 minutes
Micro-volume sampling: requires only 300 μL (0.3 mL) of fluid via precision micro-pipette
Self-contained automatic washing: built-in automated capillary cleaning and rapid drying system
Exceptional battery endurance: high-capacity 24V lithium battery supports 16h at 40°C or 8h at 100°C
Dual capillary viscometers providing 100-fold dynamic range coverage (1 to 2000 mm²/s customizable)
Photoelectric meniscus transit detection delivering 0.01s timing accuracy and repeatable metrics
Intuitive guided interface on high-contrast screen with quick-change plug-in viscometer sockets
Compliance with international standards: ASTM D445, ASTM D446, ASTM D7279, GB 265, and GB 11137

Applications

The HM-YN4 provides critical mobile oil analysis across diverse field environments:

Marine & Offshore Engineering: Main engine cylinder oils, auxiliary generator crankcase oils, and stern tube lubricants on cargo vessels and drilling rigs.
Mining & Heavy Plant Maintenance: Hydraulic excavators, heavy haulage gearboxes, and open-pit mining machinery fluid checks.
Aviation Ground Support: Ramp-side inspection of ground equipment hydraulic oils and turbine servicing fluids.
Fleet Transport & Railways: Locomotive crankcase oils, bus fleet diesel engine oils, and depot maintenance fluid checks.
Emergency Quality Response: Environmental spill identification and on-site fuel adulteration screening.

Technical Specifications

Parameter	Specification
Instrument Model	HM-YN4
Form Factor	Portable with integrated customized three-proof engineering protective case
Reference Standards	ASTM D445, ASTM D446, ASTM D7279; Complies with GB265-88 and GB 11137-89
Viscometer Capillary	2 capillary viscometers (standard configuration: inner diameter 0.5 or 0.8 mm)
Measurement Range	1 ~ 2000 mm²/s (customizable; two tubes provide 100-fold dynamic range)
Sample Volume	300 μL (0.3 mL via micro-volume liquid transfer device)
Testing Duration	Typically ~3 minutes per test cycle
Constant Temperature Range	Ambient ~ 100°C
Temperature Control Accuracy	±0.01°C
Temperature Control Resolution	<0.01°C
Timing Accuracy	0.01s
Detection Method	Photoelectric detection
Temperature Sensor	Pt100 platinum resistance thermometer
Repeatability	≤1%
Reproducibility	≤3%
Measurement Accuracy	≤1%
Power Consumption	Standby power: ≤10W; Maximum power: ≤50W
Power Supply	Built-in 24V lithium battery (16h at 40°C; 8h at 100°C)
Dimensions & Weight	360 mm (L) × 265 mm (W) × 290 mm (H); 9 kg
Operating Environment	Temperature: 10 ~ 35°C (target temp must exceed ambient by >5°C); Humidity: <80% RH
Operating Precautions	Avoid strong vibrations, air turbulence, strong electromagnetic interference, and corrosive gases

Configuration and Accessories

HM-YN4 Portable automatic kinematic viscometer in engineering protective case
2 Calibrated capillary viscometer tubes (standard 0.5 / 0.8 mm)
Adjustable volume micro-pipette with disposable pipette tips
Internal cleaning solvent container, waste bottle, and connection tubes
24V High-performance lithium battery pack and dedicated AC power adapter/charger
User operation guide, calibration report, and certification sheet

Related Models

For stationary benchtop analysis in standard analytical facilities, explore the HM-YN1 or the 3-in-1 HM-YN2. For high-volume automated laboratory batch work, review the HM-YN3 series. For sub-ambient chilling down to 5°C, consider the compressor-equipped HM-WYN.