Constant Temperature Viscosity Bath

Constant Temperature Viscosity Bath is designed for use with capillary viscometers but also adapts for general laboratory work requiring precise temperature control. It can also be used with Zeitfuchs® Cross-Arm Viscometers and Asphalt Institute Vacuum Viscometers.

The Viscosity Bath meets ASTM D445 requirements with selectable temperature presets and variable control options. A stainless steel encased thermistor in the Bath senses temperature. The 12x12in (305x305mm) Pyrex bath jar is lit by fluorescent lamps and viscometers are easily read against the white background. Bath Covers have seven 2in (51mm) diameter holes for viscometers and two 3/8in (10mm) holes for ASTM thermometers. The circuitry is in the base platform drawer on ball-bearing glides for easy access.

The temperature range is 20°–100°C and control is proportional to ±0.01°C. Users can set the temperature at any point within their ranges and make adjustments within hundredths of a degree. The 900-Watt unit uses a motor-driven stirrer, two heating elements, and advanced over-temperature protection standards. A second thermistor provides fault protection for over-temperature conditions. The unit shuts off until the user resets the limit circuit, if the control thermistor is disconnected, or if the bath liquid falls below the safe operating level.

Features:

• Optimal for use with capillary viscometers but adapts to general lab applications
• Compliant with ASTM D445 requirements and features selectable presets or variable temperature control options
• Advanced over-temperature protection and safety-guard features shut the unit off when hazards occur

Included Items:

• Constant Temperature Viscosity Bath, 120V, 50/60Hz or 240V, 50/60Hz

Accessories:

• Glass Capillary Viscometers, select from the Zeitfuchs Cross-Arm® or Asphalt Institute Vacuum Viscometers for measuring bitumen viscosity.
• PTA-100 Neoprene Viscometer Holder is required to secure the Asphalt Institute Vacuum Viscometers.
• PTA-119 Plastic Viscometer Holder is required to secure the Zeitfuchs Cross-Arm® Viscometers.
• PTA-70 Drawer Unit for Viscosity Bath fits under bath for storing viscometers and accessories
• MA-210C ASTM 9C Pensky-Martens & Tag Closed High Use Mercury Thermometer, -5°-110°C has 0.5°C divisions
• PTA-61 High Temp Bath Fluid, 5 Gallons recommended when testing to 100°C (212°F)