Ametek 9000 Manual

[Vickiana Sconyers]

Atthe core of the system is ZYGO's Coherence Scanning Interferometry (CSI) technology which delivers sub-nanometer precision at all magnifications, and measures a wider range of surfaces faster and more precisely than other commercially-available technologies, thus optimizing your return on investment.

Flexibility is the hallmark of ZYGO's NewView products. The NewView 9000 profiler offers exceptional value with applications as varied as flatness, roughness and waviness, thin films, step heights and more.

All NewView 9000 profilers are equipped with a triple-zoom turret which can be populated with discrete zoom optics tailor made for the system. Sample staging configurations range from completely manual to fully automated with encoded travel.

Regardless of your configuration, all NewView 9000 systems offer high-accuracy measurements, ease of use, and fast measurements, all at an attractive price point that make it the ideal choice for versatility and value in 3D optical profilers.

The NewView 9000 profiler features an open work area, with clear lines of sight, to help make measurement setups and changeovers simple and quick. Systems can be equipped with a variety of sample staging that range from fully manual X/Y and tilt stages, to fully automated stages with 150 mm of travel and 4 degrees of tilt. With the integrated isolation system and compact size, it is well suited for benchtop installations; using the optional stand and workstation make an ideal production-style system.

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WARNINGS, CAUTIONS, and NOTES contained in this manual emphasize critically instructions as follows:

Important information that should not be overlooked.

operating procedure which, if not strictly observed, may result in personal injury or environmental contamination.

operating procedure that, if not strictly observed, may result in damage to the equipment.

Burn hazard. Hot surface. Do not touch, allow to cool before servicing.Electrical SafetyHigh voltages are present in the analyzer housings. Always shut down power source(s) before performing maintenance or troubleshooting. Only a qualified electrician should

make electrical connections and ground checks.

Any use of the equipment in a manner not specified by the manufacturer may impair the safety protection originally provided by the equipment.

The WDG-V UOP is designed to be used in Category 3 hazardous locations where explosive gases may be present. Protection against explosion is provided by purge technique. There are four rules that must always be followed:Do not open the enclosure unless the power is removed from both sensor and control unit for 90 minutes while maintaining pressurization, or the area is demonstrated to be hazardous. Perform purge system maintenance as described in Chapter 2 of this manual. Use only appropriate approved conduit fittings or cable glands for cable entry

(IIC, IP40 minimum). No holes shall be left unplugged. Internal temperature rises above the rated T-class. The end user must take immedi- ate action on the loss of pressure to reinstate purge.HAZARDOUS LOCATION LIMITATIONS

The WDG-V UOP is a Category 3 analyzer specifically designed and certified for use in ATEX II 3 G and IECEx hazardous locations. It can be safely operated in a location in which:

The interface is industry-standard MODBUS which allows customized user software. Contact the factory for the MODBUS register definitions.How the Oxygen Measuring Cell WorksThe sensing element is a closed-end tube made from ceramic zirconium oxide stabilized with an oxide of yttrium or calcium. Porous platinum coatings on the inside and outside serve as both a catalyst and as electrodes. At high temperatures (generally above 650 C/1200 F), oxygen molecules coming in contact with the platinum electrodes near the sensor become ionic.As long as the oxygen partial pressures on either side of the Cell are equal, the movement is random and no net flow of ions occurs.If, however, gases having different oxygen partial pressures are on either side of the Cell, a potentiometric voltage is produced. The magnitude of this voltage is a function of the ratio of the two oxygen partial pressures.If the oxygen partial pressure of one gas is known, the voltage produced by the Cell indicates the oxygen content of the other gas. A reference gas, usually air (20.9 % O2 ), is used for one of the gases.The voltage of the Cell depends on temperature, and so the Cell is maintained at a constant temperature. The oxygen content is then determined from the Nernst equation:where R and F are constants, T is absolute temperature, and O1 and O2 are the oxygen partial pressures on either side of the Cell.

Measuring Non-Combustible Gases

For measuring oxygen in non-combustibles gases, the calibration of an analyzer is obtained using the formula:

Where A is a constant, T is the Cell temperature on an absolute scale (C +273) and O2 Unk% is the unknown oxygen concentration of the gas to be analyzed, and which is calculated by the analyzer.

The Cell produces zero voltage when the same amount of oxygen is on both sides. Voltage increases as the oxygen concentration of the sample decreases. The voltage created

by the difference in the sample gas and the reference, air is transmitted to the microprocessor control unit and linearized to an output signal.Hydrocarbons in the Gas Sample

When hydrocarbons are present in a gas sample, a combustion process occurs when the sample is exposed to the high temperature of the Zirconia Cell. If the oxygen reading is lower than expected, it may be an indication that hydrocarbons are present.

The amount of oxygen reduction is dependent on the type of hydrocarbons present in the sample gas.About the Analyzer Sample System,The WDG-V UOP was designed for meeting the purpose of low level oxygen measurement during the regeneration cycle in which coke deposits are removed from the catalyst by oxidation. The WDG-V UOP analyzer has a specially treated Zirconium Oxide Cell which is used to survive the destructive effects of halogen-oxidation.

The analyzer uses a nitrogen-operated aspirator to draw a sample of gas from the catalyst regenerator. A portion of this gas passes over the Zirconia Cell. Because the aspirator gas contains no oxygen, the sample can simply be returned to the process.

Personnel Technical Level Required for Installation

The operations in this section should be performed only by qualified service personnel experienced in electrical safety techniques. Never service the analyzer unless power has been removed from the analyzer, and the analyzer has been allowed to cool for at least 90 minutes. Also, always use gloves when working on the analyzer.Storage Prior to InstallationIf the analyzer is stored for any period of time prior to installation, store the equipment in an environment where it is not subject to dripping or splashing liquids, corrosive gases, high humidity, or excessive heat or cold. Recommended storage conditions

include: 0 C to 50 C (32 F to 122 F)

Temperature: Relative Humidity:

Figure 2-5.1.

RCU Mounting Dimensions.Installing the AMEVision Display User InterfaceThe AMEVision Control Unit can be mounted to either a panel or a wall. Refer to the AMEVision Display User Interface Installation and User Manual for complete installation and operation details.

Remove AC mains power from the controller before making any electrical connections.

Connections to the analyzer unit are made through the Wiring board. The Wiring board is located on the front-bottom of the analyzer (Figure 2-7).

Any screw terminals on the Wiring board not described in this section are reserved for future use.

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