RheoVac® DR Drying Monitor

The RheoVac DR is a monitoring system that eliminates the guesswork involved with vacuum drying operations. It monitors several parameters in the vacuum chamber exhaust line, before the vacuum pump or ejector, to provide a real-time, detailed measurement of the mass flow rate of the water vapor being removed from the drying process. This view of the process can be used to chart the drying cycle, make informed decisions about changes to the process and quickly evaluate the impact of these changes. One chemical manufacturer reported reductions of approximately $2,000,000 in operating costs over a four-year period. Click here to read more about these impressive results (PDF).

What Are the Benefits?

• Decreased drying time – Cycles can be reduced by as much as 40%
• Increased capacity and throughput – Production bottlenecks created by the drying process are reduced.
• Improved product integrity – Elimination of off-line sampling reduces risk of product contamination.
• Reduced costs – Closer control and shorter cycles reduce energy consumption and maximize yield.
• Tighter process control – Multiple process variables are monitored simultaneously.

How Do They Work?

The RheoVac DR uses a dual probe flow measurement along with three other primary process measurements to determine when dry conditions are met.

Output data includes:

• Water vapor flow: the rate at which moisture is being removed during the drying cycle.
• Pressure: the level of vacuum actually being achieved in the dryer.
• Total mass flow and actual volumetric flow:  actual operating effectiveness of the vacuum equipment to remove gas and water vapor in comparison with the vacuum equipment’s performance curves.
• Relative saturation: an output that shows the percent moisture content in the vacuum line.
• Temperature: accurate, real-time display of the process temperature.

How Do I Get One?

Submit your inquiry today using the on-page form to send us the application data to review, or visit our contact us page for telephone, fax and email information.

• Features
• Specifications
• Documentation

• Provides direct reading of water vapor flow
• Measure vacuum level and quality
• Quantify vacuum equipment capacity and performance
• On-board sensor diagnostics
• Real time data is stored locally and can be routed to DCS

Temperature	Probe: 40° – 160 °F   Electronics: 40° – 120 °F
Pressure	0 – 29” HgA
Calibration    Accuracy	± 5% of total mass flow
Repeatability	± 0.5% of reading
Line Sizes	3” minimum
Process  Connection	1” MNPT and ½” NPT
Wetted  Material	316 Stainless steel probe; Engineered plastic probe tip
Display	Backlit LCD
Enclosure	NEMA 4
Outputs	Local display, Ethernet 10Base-T, RS-422/232,and 4-20mA (optional)
Input Power	100 – 250 VAC; 50 – 60 Hz

Product Brochure
RheoVac DR Application Data Sheet (download document)