VH1 and VH2- AUTOMATIC HOUILLON VISCOMETER
Test Methods
ASTM D7279, ASTM D2270
Description
Using a “Houillon” capillary tube, ISL’s VH Series Viscometers automatically determine kinematic viscosity of lubricating oils, used oils, fuels, polymers, and similar materials over a wide viscosity range. Initially developed for lubricant blending facilities, research laboratories, and used oil monitoring where small sample size and quick results were required, the ISL VH viscometer offers exceptional performance, providing results in 60 seconds using less than 1 ml of sample.
The VH series of viscometers include:
Model VH1 - integrates a single solvent capacity for tube cleaning
Model VH2 - accommodates two solvents, offering added flexibility in solvent selection for efficient tube cleaning and drying and withstands the use of aggressive solvents
In both models, ISL’s custom Windows-based management software enables central monitoring of up to 16 capillaries spanning up to 4 baths. Results are displayed, saved to the database, and printed or sent directly to a LIMS following user-defined protocols. With 40C and 100C bath temperatures programmed, viscosity index can be performed, calculated and printed within minutes.
Houillon Viscosity Method
The term “Houillon” refers to the specific capillary tube used to measure viscosity in ISL’s VH systems. The principle - based on straight flow approach - requires less than 1ml of sample, therefore speeding the warm-up and analysis time. Because the specimen flows through the detection points only once, the houillon method is ideal for both transparent and opaque samples.
Applications
Viscosity
Features & Benefits
RAPID, SMART AND VERSATILE OPERATION
Modular design with ultimate configuration flexibility enables up to 16 simultaneous test runs
High throughput with complete results in minutes; can complete up to 75 tests per hour
Easy constant calibration with reference fluids
Reduce waste with small sample size; uses less than 1 ml
Easy tube replacement in minutes
POWERFUL PC-BASED DATA MANAGEMENT
Multi-instrument networking and PC-based data management
Viscosity Index computation in minutes when 40C and 100C bath temperatures are programmed
Tags outlier results according to user preferences
Saves calibration parameters for multiple bath temperature settings
Diagnostic menus for service
EFFICIENT CLEANING PROCEDURE
Automated cleaning system, individually programmable for each tube
Minimal solvent consumption for cleaning cycle
All solvent removed under vacuum, not under pressureof aggressive