Pressure Transducers for Plasma Spray Systems MKS lnsfnrmenfs Inc. Andover, Mass.

MKS Instruments Inc. manufactures absolute pressure transducers, which are used in vacuum plasma spray systems to provide accurate and auto- mated pressure measurement. The 600 Series Baratron pressure transducers feature accuracies of 0.12% of reading and, unlike most transducers and dial gauges, are designed to provide excel- lent performance at very low vacuum pressures. Full scale ranges of 1,000, 10, and 1 Torr are available with NIST traceability and a 2-year warranty. In addition to very low hysteresis, Bara- trons feature a high level electronic output for use with automatic control and data acquisition systems.

Circle 089 on reader information card

Vacuum Switches Vacuum Research Cop Pittsburgh

Vacuum Research Corp. has intro- duced a new line of low-cost vacuum switches featuring a built-in S.P.D.T. 5 A relay and output for PC, PLC, or other data acquisition and control sys- tems. The switch is about the size of a pack of cigarettes and mounts directly on standard gauge tubes such as the Hastings DV-6, Varian 531, or VRC Pirani and diaphragm tubes. Power required is less than 200 mA at 12 VDC. The switch includes a 115 or 220 VAC power supply, and is available in several ranges including l-l ,000 mTorr T/C; 5-5,000 mTorr with a Pirani sensor, l-1,500 Torr; and 30 in. Hg to atmosphere with stainless steel or silicon diaphragm sensors.

Circle 090 on reader information card

Precious Metal Sputtering Targets Handy and Harman Fairfield, Corm.

Handy and Harman offers precious metal sputtering targets, solid and bonded, in a broad range of alloys, shapes, and dimensions. Computer- controlled operations enable supply of precision-machined targets as well. Our engineers and metallurgists will work with you to develop alloys and forms for specialized requirements. They provide a complete package, from initial materials preparation to fabrication and refining.

CirCle 091 on reader information card Circle 092 on reader informatlon card

Rotary Vane2Vacuum Pumps Balzers Hudson, N. H.

Balzers has introduced a series of compact one- and two-stage rotary vane pumps for rough- and me- dium-vacuum generation. These pumps are ideally suited for use as backing pumps for Roots and tur- bomolecular pumps. An integral forced-oil lubrication system as- sures sufficient lubrication of bear- ings and shaft seal for extended operating life and high uptime in dirty environments or for corrosive- gas pumping applications. The dual-filtration system is more com- pact, easier to use, and less costly to maintain than alternative lubrica- tion methods. Balzers new rotary vane pumps are more compact than previous models and are extremely quiet in operation. They have fewer parts for higher reliability and ease of service and can start at an exceptionally low temperature of 12°C. The pumps contain an inte- gral gas ballast valve allowing effi- cient pumping of water vapor. Mod- els Uno 035 and 065D are single- stage design and have ultimate pressure of 1O-2 Torr. Models Duo 035 and 065D are two-stage design with ultimate pressure of 10m3 Torr. Pumping speed of Uno/Duo 035 is 22 cfm and pumping speed for Uno/Duo 065D is 42 cfm.

48 METAL FINISHING . MARCH 1995