Royce now offers a complete line of Interface Level Analyzers that make it possible to reliably monitor and control the solid/liquid interfaces in settling tanks and clarifiers; regardless of the size of the plant, process or budgetary constraints.
The Royce series of Interface Level Analyzers use an ultrasonic ranging technique to measure the depth of interfaces within the tank. The 25 dual series sensor is available in polyurethane for standard applications and Kynar for high temperature or chemical applications. The sensor is mounted just below the surface of the water. Royce offers a hinged bracket sensor mounting option that accommodates surface skimmer passage automatically with the rotation of the rake.
The Model 2501A is a low-priced instrument designed for interface monitoring applications which do not require control outputs. The Model 2511A is capable of having the ultrasonic speed-of-sound signal from its transducers changed by the user in applications where liquid mediums other than water are in use; it also has four setpoint relays which can each be used as either a “high” or “low” setpoint. The Model 2511A also has a serial output available for the purpose of tying a number of the units to a central process control computer. The Model 2505 system incorporates all the features of the 2511A allowing individual monitoring and control on every primary, secondary, and thickening clarifier in the plant—economically.

• No moving parts, no maintenance, no recalibration required.
• Surface skimmer friendly.
• Microprocessor based electronics.
• Back-lit LCD displays.
• Full featured set point relays available (Models 2511A/2505).
• Simple, user friendly menu driven programming.
• Numerical and graphical displays.

The Royce answer to accurate point level detection can be found in the Model 2110 and Model 2120 Point Level Detectors. An optical system, these instruments are the first point level detectors available in the industry with self-cleaning capabilities built into the sensor.
Simplicity in design with field proven technology makes the Royce Point Level Detectors the best choice for interface detection applications. The microprocessor-based electronics of the detector are programmed for high and low setpoints, relay time delays, and self-cleaning optics by adjusting the setup switches on the printed circuit board.
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How many times have you had one of the following experiences while using a portable instrument? Been caught in a downpour and instrument electronics became wet; dropped the instrument in the water and soaked the electronics; dropped the instrument on a hard surface and it became inoperable; got to the field only to find out that your batteries were too low to operate the instrument. These are just some of the experiences our customers told us about when they asked for a reliable portable instrument. Royce portable water quality analyzers have been designed with continual field use in mind. We have answered all of these problems and more.
When we say submersible we mean it - all our portables will work underwater. The enclosures are made of a glass-filled nylon material that will not warp or dissolve when placed close to heat or chemicals. The instruments all use a standard 9V battery that can be purchased anywhere. Military components are used to guarantee quality and reliability. You can count on the electronic sensor innovation that you expect from Royce Instrument Corporation, when purchasing one of our portables. All of them have rugged, long life sensors that will operate in the most negative environments you can find; and electronics that continually diagnose themselves and the sensors - alerting the operator when recalibration or maintenance is necessary. Royce portable instruments will give any operator correct data under any environmental condition!
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