ASTM D; IP Method A*. # to +30°C temperature range. # Accepts up to 12 SimAir® test cells. # Internal refrigeration unit. # Mounting for Brookfield. ASTM D Standard Test Method for Low-Temperature Viscosity of Automatic Transmission Fluids, Hydraulic Fluids, and Lubricants. ASTM D – Standard Test Method for Apparent Viscosity of Adhesives Having Shear-Rate-Dependent Flow Properties Using Rotational Viscometry. Scope.
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Block Bath for sample preconditioning, 20 test positions. No viewing window, but with digital sample temperature display.
No other units of measurement are included in this standard. Recommended accessories for BV40 or BV It is designed for those laboratories with a very light sample load and limited space and budget. The Lawler liquid baths are programmed such that the sample cooling rate equals the cooling rate experienced by a sample when immersed in the constant low temperature air chamber.
A video chart recorder option -V to track possible temperature upsets, and a digital sample temperature display d29883 -D are available for Model BV Historical Version s – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: The illuminated jar allows full visibility of the test samples to facilitate the proper position of the spindle bead immersion level. Ample storage is provided ast the cold chambers for pre- cooling the insulated cell carriers.
Floor Model Viewing Window. Mercury, or its vapor, may be hazardous to health and corrosive to materials. The turntable holds 10 test samples. The spindle is connected while the sample is still in the liquid bath.
Windows based PC proprietary software is capable of controlling two baths simultaneously. Far superior viscosity data repeatability is obtained using this procedure as opposed to the air chamber procedure. Caution should be taken when handling mercury and mercury containing products. Model BV has an 28 cm 11 inch square, multipane, insulated window with fluorescent light for observation of the interior, with 28 sample capacity.
This allows operating baths at two independent temperatures with independent start, stop, and duration times. At least two reference fluids are recommended for each desired test temperature per viscosity. Recommended d29983 for BV Model BV is a smaller, floor space saving, compact unit, with 12 sample capacity. A Windows based PC is required not supplied.
Lawler | ASTM D Low Temp Brookfield Viscosity Baths
The twin air chambers are independently temperature controlled. The success of the ATF correlation and the development of this test method has over time been applied to other fluids and lubricants such as gear oils, hydraulic fluids, and so forth.
Procedure A is used when only an air bath is used to cool samples in preparation for viscosity measurement. Measurement of the viscometric properties of these oils and fluids at low temperatures is often used to specify their acceptance for service. Model BV has an 28 cm 11 inch square, multipane, insulated window with fluorescent astn for observation of the interior, with 28 sample capacity.
SimAir™ Test Cells for ASTM D2983
A digital, indicating controller with resolution of 0. The bath is supplied with an integral leveling viscometer support rod.
The two chambers allow simultaneous conditioning of samples at the same or different temperatures d2893 quicker data collection then with only one apparatus.
Historical Version s – view previous versions of standard. This allows the measurement of viscosity without removing the sample from the temperature controlled environment.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Work Item s – proposed revisions of this standard.
SimAir™ Test Cells for ASTM D
Low temperature viscosity values obtained by either interpolation or extrapolation of oils may be subject to errors caused by gelation and other forms of non-Newtonian response to spindle speed and torque. After the 16 hours conditioning time, the turntable is manually rotated until the proper test cell is under the viscometer. Kits do not include the Brookfield Viscometer, which can be purchased separately.
Procedure C is used when a mechanically refrigerated constant temperature liquid bath is used to cool samples by means of a simulated air cell SimAir 3 Cell in preparation for viscosity measurement.
It is designed for those laboratories with a very light sample load and limited space and budget. Paperless videographic temperature recorder with flash memory card. Recommended are at least 2 reference fluids for each desired test temp. Each model is equipped with turntable rotating at 4 RPM. Specifications subject to change without notice.
No viewing window, but with digital sample temperature display. Each chamber has a turn table with 6 sample capacity each. Each model is equipped with turntable rotating at 4 RPM. The bath is an unsilvered Dewar jar holding about 3 liters of bath medium.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Sample temperature digital display for Model BV70 only; included with others. Brookfield digital viscometer and DV Loader configuration software. Procedure B is used when a mechanically refrigerated programmable liquid bath is used to cool samples in preparation for viscosity measurement. Model BV is a smaller, floor space saving, compact unit, with 12 sample capacity.