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ASTM D7279

AUTOMATIC HOUILLON VISCOMETER - MODEL NVH 450

This test method covers the determination of kinematic viscosity of transparent and opaque liquid such as fresh and used engine oils using and automated Houillon viscometer.

MAIN CHARACTERISTICS:

4 simultaneous tests
Viscosity range : 0,2 to 5000 centistokes
Bath working temperature range: from ambient up to 120°C
Bath temperature accuracy: 0.015°C
Accuracy of flow measurement: 0.01S.
Solvent tanks included (1 or 2 solvents)
Automatic tube cleaning one by one
Easy calibration (12 tubes can be stored) by reference fluid
Possibility to calculate the VI from 2 different tests or between 2 connected instruments
Easy tube replacement and adjustment
Solvent resistant solenoid valves

All Parameters Accessible By Touch Screen

Unique cleaning system
2 calibration procedure steps
Quick: 50 to 200 seconds per run
Economical
Small volume samples between 100 microlitre and 400 microlitre injected by micro pipette
Small solvent consumption to clean the tubes (between 5 and 10ml).

BATH FEATURES:

Capacity : 11 litres
Medium type : silicon oil 200-10 or water
Temperature range : 40 to 120°C
Stability : ą 0.02°C
Bath refrigeration : by built-in cooling coil
Nature of coolant : WATER or external chiller
Temperature rising time from ambient to 120°C : 1h30
Temperature lowering time from 120°C to ambient with coolant : ą 2 h

Catalogue No. NL 60100