Brookfield Process Viscosity Controllers
AST-100 Advanced Sensor Technology
The new AST-300SY Single Station Viscosity Controller and AST-400SY Multi-Station Viscosity Controller are designed for use with Brookfield AST-100 Systems to accurately measure and control viscosity.
- Precise, programmable, on/off dosing control
- Intuitive screen layout
- Quick selection of setup and menu items
- At-a-glance set point and alarm status
- Displays viscosity in cP, mPa•s, cSt or cup-seconds, current pH value a temperature in °C or °F
- Viscosity and pH data trending
- pH and pump interlock
- Multi-level password protection
- Viscosity high/low alarms
AST-300SY Single Station Controller
The AST-300SY Single Station Controller is designed for use with the Brookfield AST-100TSY as part of the viscosity control system to measure viscosity and temperature, interlock with other process devices, and accurately control the viscosity of your product in a variety of industrial applications.

Download - Brookfield AST-300SY brochure, English
AST-400SY Multi-Station Controller
The AST-400SY Multi-Station Controller is designed for use with up to ten Brookfield AST-100TSY viscosity control units as part of a multi-product viscosity control system. The system will measure viscosity and temperature, interlock with other process devices, and accurately control the viscosity of your products in a variety of industrial applications.

Download - Brookfield AST-400SY brochure, English
AST options
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Explosion Proof
- Explosion-proof with FM and Atex approval
- Sanitary with APV housing and 3A approval
- pH control for printing applications
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Flange Mount
Flange mount designs are available to allow for direct mounting onto a process tank through a sidewall flange.
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Probe Style
Probe Style mount designs allow for insertions into tanks from above.
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