APP Microprocessor Controlled Valves Advanced Pressure Products makes a complete line of compact On-Off, Servo, and Flow Control. Valves with a wide variety of controller options. Valves are easily retrofitted to automatic existing applications. With APP's Pressure Generator, custom pressure systems can be created. CIRCLE 63 ON READER SERVICE CARD
APP Custom Control Systems Advanced Pressure Products designs custom pressure and flow control systems to meet your specifications. By combining APP onoff, metering, and servo controlled valves, pressure generation systems, flow meters, pressure gauges, and other components, APP can provide solutions ranging from small desktop applications to complete automated laboratory or process control needs. CIRCLE 67 ON READER SERVICE CARD
AUTOMATED PRESSURE CONTROL SYSTEM
GSH APP Remote Position Controlled Valve The Advanced Pressure Products Remote Position Controlled Valve provides a very cost-effective remote controller for metering valves. The valve is controlled by a single analog voltage which determines the desired position of the valve. The controller moves the valve to match this target position. Automatic limit protection is provided. Control can be provided from a simple remote potentiometer or an analog output of an existing computer system. CIRCLE 64 ON READER SERVICE CARD
APP Servo Valve Controllers The Advanced Pressure Products Dual Servo Valve Controller uses a pair of Microprocessor Controlled Metering Valves which allow computer control of the flow into and out of a system to maintain pressure, flow, or other variables. The system is controlled using a PCCompatible computer and custom software. Single valve servo systems are also available. CIRCLE 65 ON READER SERVICE CARD
APP Pressure Testing Advanced Pressure Products offers an isostatic pressure testing service, with test pressure up to 60,000 PSI. The user can specify ramp speeds and holding times, and custom test designs are available.
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ADVANCED PRESSURE PRODUCTS Call: (800) 825-5764 (Toll Free in U.S. and Canada) 83 Brown Rd„ Ithaca, NY 14850 · Phone (607) 257-5544, Fax (607) 257-5639 Free Phone Service From Most Countries · Sales Offices Worldwide
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ANALYTICAL CHEMISTRY, VOL. 65, NO. 3, FEBRUARY 1, 1993 · 109 A
