The self-contained viscometer system consists of a thermostatic bath with circular heater and a systems operation control column. The bath contains four patented viscometer tubes (which operate independently of each other) with optical sensors to detect the flow of oil through the tubes. The control column contains an LCD display that provides the user with information concerning the system's status, and LEDs indicate each tube's status. For applications involving extensive data-handling requirements, an optional external computer can be used.
Other features of the viscometer include:
Compliant with requirements for ASTM D445, D446, D7279, IP 71 and ISO 3104
High throughput - up to 60 samples per hour to ASTM precision
Small sample volume - 0.3 to 0.6 ml
Low solvent consumption - 2.5ml per sample
Easy to use
Automatic flow time measurement
Fully automatic cleaning and drying
Single or dual solvent injection system
Optional dual measurement capability
Chemically resistant system
The system can also carry out analyses without the need of an external computer, an advantage in laboratories utilizing the laboratory information management system (LIMS) where an additional computer is not required.
The viscometer operates in two modes: standard viscosity determinations or measuring tube calibration. In both modes, the user selects how many determinations must be made for an average result. The operator controls additional parameters such as tube constants and cleaning cycles.
Table 1. SpecificationsOperation
Upon completing the measurements, the system automatically initiates the cleaning cycle by draining the tube, performing the user-specified number of cleaning solvent injections and then drying the tube. An optional dual cleaning solvent system is also available for difficult and heavily contaminated samples. The entire cycle time from sample injection to data readout ranges from four to eight minutes per tube when ASTM D445 precision is required. Sample throughput can be increased considerably by reducing cycle times for used oil analysis applications based on trending.About the Company