Computational Systems orporated 8000RF Laser Alignment Fixture User Manual Appendix A
Computational Systems Incorporated Laser Alignment Fixture Appendix A
Contents
Appendix
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| Document Description | Appendix |
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| Document Type | User Manual |
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| Date Submitted | 2001-01-30 00:00:00 |
| Date Available | 2001-01-30 00:00:00 |
| Creation Date | 2001-01-26 10:38:22 |
| Producing Software | Acrobat Distiller 4.0 for Macintosh |
| Document Lastmod | 2001-01-30 16:02:12 |
| Document Title | Appendix A |
| Document Creator | FrameMaker 6.0: LaserWriter 8 8.7 |
| Document Author: | sweetb |
Appendix Foot Pre-Check Types Foot Pre-Check Measurement Methods – Soft Foot and Frame Distortion Index (FDI) Soft foot is a condition where all feet (typically four) of a machine component (such as a motor or gearbox) will not rest on the same plane. This condition also exists if the machine baseplate pads (where the machine foot rests) are not on that same plane. If this condition continues to exist and is not corrected, two problems will occur. First, it will be very difficult to align the machine. You will appear to be “going in circles” trying to move the machine into alignment. Second, but most important, the machine will not operate properly. The component was not designed to operate in a bound condition. When this happens, binding will occur causing stress at the bearings and changing the operating clearances (inside the component). To prevent binding, you must check all the feet, even those on the machine not being moved. Traditional methods of measuring soft foot conditions included mounting a dial indicator at the machine foot (similar to Fig 1). The hold-down bolt was then loosened while the indicator was watched for movement. If the indicator moved more than a predetermined amount (usually 0.003 inch), the foot required correction. A shim equal to the amount of the indicator movement was then shoved under the foot. Fig 1 Fig 2 A-1 This method assumed that a parallel soft foot existed. However, a large percentage of problem feet are angular soft feet (similar to Fig 2). Correcting this type of problem with a full shim can make the condition worse (see Fig 3). Correction should be determined with a set of thickness gauges (feeler gauges). The result is usually a wedge shim similar to Fig 4. Fig 3 Fig 4 The laser alignment system allows you to locate the problem feet and bypass those feet that are OK. While the hold-down bolts are individually loosened and retightened, the laser system will measure the shaft to shaft position. This actually measures how much each connection affects shaft alignment. In a perfect condition, loosening bolts should not move the shafts at all. Two different laser methods are available to evaluate the measured movement at the shafts. They are: • Soft Foot • Frame Distortion Index (FDI) Although they evaluate the data differently, both methods give you a sense of soft foot severity at each location. Soft Foot results are shown by the number of X’s displayed and FDI results are shown as a numerical value. A-2 Foot Pre-Check Types Soft Foot Evaluation The Soft Foot evaluation provides you with a sense of severity without showing numbers. Numbers are not used because, most of the time, they are mistaken for the value of the shims (totally wrong). When the numbers are calculated, they are compared against the tolerance (usually 0.5 mils/inch). If a particular foot is below the tolerance, it is labeled OK. If the number is between one and two times the tolerance, it is labeled with a single X. If the number is between two and three times the tolerance, it is labeled as XX. If the number is greater than three times the tolerance, it is labeled as XXX (the more X’s, the greater the severity). The tolerance can be changed in UltraMgr and downloaded to the analyzer. The number is evaluated by taking the horizontal and vertical movement on each target and calculating the total movement on each target. The largest movement of the two is then divided by the distance between the heads (dimension C) to determine the angle of deflection caused by loosening a hold-down bolt. This angle is compared to the tolerance for final evaluation for that foot. The advantage of this method is that it uses a combination of horizontal and vertical movements on the target to determine the problem feet. Experience has shown that approximately 20% of the soft foot conditions cause a horizontal move because of a severely bent foot. FDI Evaluation The Frame Distortion Index provides you with a sense of severity with numbers. Caution! Do not mistake these numbers for shim values. When the numbers are calculated, they are compared against the tolerance (usually excellent <2 mils and acceptable <3 mils). If a particular foot is in the excellent range, the number is plain. If the foot is acceptable, it will have a clear box around the number. If the foot is out-of-tolerance, it will have a solid box around the number. The higher the number, the greater the severity. The tolerance values can be changed in UltraMgr and downloaded to the analyzer. A-3 The number is evaluated by measuring the vertical angle and applying it to an old millwright’s “rule of thumb”. It is: FDI = 2 x Vertical Angle x Inboard to Outboard Foot Distance Vertical angle is measured at the shafts when the hold-down bolts are loosened and the Inboard to Outboard Distance is the distance from the front to the back feet of the component being measured (dimensions A or E in the Machine Dimensions screen). This value is compared to the tolerance for final evaluation for that foot. The disadvantage of this method is that it uses only vertical movement to determine the problem feet (and the numbers are commonly mistaken for shim correction values). However, this is the only method currently used by Prüftechnic alignment products. A-4 Foot Pre-Check Types Appendix Pinouts and Wiring Diagrams RS232 D Connector Pinouts Pin Description 01 Ground (connected to 7, 16, 22) 02 Transmit (RS-232) 03 Receive (RS-232) 04 Connected to 05 05 Connected to 04 06 Connected to 08 and 20 07 Ground (connected to 1, 16, 22) 08 Connected to 06 and 20 0910 11 Transmit (for CSI Modem only) 12 Receive (for CSI Modem only) 13 +5.0 Volts 14 Sensor Button 15 CTS (for CSI Modem) 16 Ground (connected to 1, 7, 22) 17 18 +9.5 Volts 19 20 Connected to 06 and 08 21 +10 Volts — Accelerometer Signal Input 22 Ground (connected to 1, 7, 16) 23 Volts In (Signal Input) 24 -10 Volts — Accelerometer 25 B-1 Model 635 Modem Cable to UltraSpec Analyzer 20 to Modem Black Brown Red Orange Yellow Blue Green Violet White 20 Model 639 Communications Cable to UltraSpec Analyzer 20 to Computer Brown Red Orange Yellow Green Blue Violet B-2 Pinouts and Wiring Diagrams Appendix Technical Specifications UltraSpec 8215/8225 Laser Alignment Fixtures Specifications Specification Description Laser Diode In-Ga-Al-P, Class II (CDRH) / Class2 (IEC), Visible Wavelength 670 nm (typical) Output power Pulsed, <1.0 mW (average) Laser Safety Class Class II (CDRH) / Class2 (IEC) FDA 21CFR 1040.10 and 1040.11 Beam Divergence ≤ 225 µrad (8215), ≤ 30 µrad (8225), Target Size 8215: 10 mm by 10 mm (0.394 inches by 0.394 inches) 8225: 20 mm by 20 mm (0.787 inches by 0.787 inches) Target Range (typical) 8215: 9 mm by 9 mm (0.354 inches by 0.354 inches) 8225: 18 mm by 18 mm (0.709 inches by 0.709 inches) Resolution 0.0000394 inches / 0.001 mm Linearity Better than 1.5% Environment Protected from ambient light interference Laser housing Aluminum Inclinometer Internal, fully automatic Inclinometer resolution Better than 1° Measurement axes 6 total, 2 displacement and 1 rotational axis per laser head Operating temperature 0° to 115° F (-17.8° C to 45° C) Storage temperature 0° to 140° F (-17.8° C to 60° C)° C-1 UltraSpec 8215/8225 Laser Alignment Fixtures Specifications (continued) Specification C-2 Description Humidity 10 to 95%, non-condensing Power management Auto “sleep” and “power down” modes Battery Nickel cadmium RF Operating Frequency 916.5 MHz RF Operating Range 0 - 50 ft (0 - 15 m), typical Battery life 3 - 4 hours continuous operation – 8 hours typical 1 Battery charging station Fully automatic super fast smart charger (auto-switching, 110-240 VAC, 50/60 Hz) Battery charging time 15 minutes (zero to full charge) Laser to analyzer communication Cableless RF and/or direct cable connection Minimum separation Any positive separation (faces not touching) Maximum separation 8215: 30 ft (9 m), 8225: 100 ft. (30.5 m) Standard mounting bracket 2 Carbon steel base – thickness 0.75 in (19 mm) Minimum shaft diameter with standard bracket 0.625 in (16mm) Maximum shaft diameter with standard bracket 2 26 in (660 mm) – requires chain extension for shaft diameters above 8 in (200 mm) Vertical clearance with standard brackets 2 5.25 in (152 mm) Calibration Calibration to NIST traceable standards Weight of total system 33 lbs (15 kg) – includes laser heads, brackets, analyzer and accessories 1 Based on 25% laser operation, 25% sleep mode, and 50% analyzer only 2 Other brackets are available for special applications Technical Specifications UltraSpec Analyzer General Specifications Physical Dimensions Height: 27 cm (10.5 inches) Width: 17 cm (6.8 inches) Depth: 4 cm (1.8 inches) Weight: 2.5 kg (5.0 pounds) Environmental Limits Temperature: -10° to 50° C (15° to 120° F) Relative Humidity: 0 to 95% non-condensing Enclosure UltraSpec 8000 analyzer: Extruded aluminum case housed in a leather case with a clear vinyl front and flip stand. UltraSpec 8117 analyzer: Extruded aluminum case housed in a leather case and a wrap-around clear vinyl sheath. (No flip stand.) Power Supply Battery: Model 8000 rechargeable, ±12 V battery pack Model 8117 rechargeable, ±7.2 V battery pack Capacity: 1.2 amp-hours Recharge time: 14 to 16 hours (fast charge) Operation time: Model 8000 10 hours of normal usage on a full charge Model 8117: 8 hours of normal usage on a full charge UltraSpec Analyzer General Specifications C-3 Note To prevent loss of memory, install a new battery within four hours after removing the old battery. An optional recharging adapter is available which will permit charging a spare battery pack external to the analyzer. LCD Display Viewable area: 7 x 13 cm (2.75 x 5.0 inches) Dot resolution: 128 vertical x 256 horizontal pixels Alphanumeric text: 8 lines x 42 characters The text and graphic displays use “super-twist” liquid crystal technology. This technology provides a super-sharp dark screen image that you can see more easily in conditions of low ambient lighting. Electroluminescent backlighting also enhances visibility. C-4 Technical Specifications UltraSpec Analyzer Input Specifications Input Signal Types A two milliamp ICP type power supply inside the instrument powers sensors such as accelerometers. This power supply provides a 2 milliamp constant current at 20 volts nominal. ICP power may be used or bypassed depending upon type of input selected. • ICP Used: + 9 volts • ICP Bypassed: + 21 volts • Input Impedance: greater than 150 k ohms • A/D Converter: 12 bits accuracy • Dynamic Range: 70 dB or greater Note Full scale vibration level depends on the type of sensor used and its sensitivity. Full scale vibration level is ± 90 g’s when using an accelerometer with a sensitivity of 100 mV/g. Autoranging The UltraSpec analyzer automatically scans the input signal for each measurement. It sets the input range to maximize the dynamic resolution while maintaining the dynamic range of the A/D converter at 72 dB. Full-scale ranges from 21V to 8 mV are supported. The noise floor is typically less than 3 microvolts for a 400-line spectra taken using a 1000 Hz maximum frequency. Input Sensor Types (ProAlign Plus Only) Portable sensors: UltraSpec Analyzer Input Specifications Laser sensor heads (Model 8215/Model 8225) C-5 Communications The UltraSpec analyzer can be downloaded from standard IBM PC/XT, PC/AT, or fully compatible computers that have an RS232 serial link. Baud rates may be selected up to 76.8K. Remote links via modem are fully supported. C-6 Technical Specifications Measurement Specifications Data Storage Capacity Standard memory: 1.0 Mbytes Maximum number of stored jobs: 100 (Alignment only) Ranges (Alignment Only) Maximum PSD input for 8215: ± 170 mils (±4.318 mm); for 8225: ± 340 mils (±8.636 mm) Maximum thermal growth input: ± 250 mils (± 6.35 mm) Resolution (Alignment Only) Manual Input: 0.1 mil (.002 mm) Display: 0.1 mil (0.002 mm) Machine move: 1.0 mil (.025 mm) Notes Total predefined/user defined notes available: 99 Maximum number of notes/job: 40 Reading Sets (Alignment Only) Maximum number of reading sets per job: 20 Baud Rates 300, 1200, 2400, 4800, 9600, 19.2k, 38.4k, or 76.8k Measurement Specifications C-7 RF Operating Frequency (Alignment Only) 916.5 MHz Data Collection (ProAlign Plus Only) Method Mode Auto Sweep 4 Point Auto CSI Laser Manual Sweep 4 Point Manual Straightness Dual Pass C-8 Technical Specifications Appendix Accessories and Optional Products Optional Items for Laser System Part No. Description D22773 ................. Mounting Chain extension, 2 ft (660 mm), standard mounting base 800002.................. with one straight and one rigid angle Lemo connectors 800003.................. with straight Lemo connectors 8AA50 .................. Magnetic straightness fixtures (see 800056) 800052.................. Non-rotational (Soft Mount) alignment fixtures 8AA54 .................. Thin mounting brackets, 5/8 inch - 4 1/2 inches (15 - 115 mm) diameter 8AA55 .................. Thin mounting brackets, 3/4 inch - 20 inches (19 - 510 mm) diameter 800056.................. Magnetic coupling fixtures Other Accessories Part No. Description 8JB050.................. Portable horizontal jackbolts kit; motor sizes 2 to 300 HP 8JB100 .................. Portable horizontal jackbolts kit; motor sizes 300 HP+ 8JB200.................. Portable horizontal jackbolts kit; motor sizes 2 to 300 HP+ See Price List ....... Precut stainless steel shims Recommended Spare Parts* Part No. Description D22745 ................. Chain Clip 8AA10 .................. CSI Tape Measure, 6 ft (2 m) 800001.................. 8210 Direct Connect Cable 821510................... 8215/8225 Direct Connect Cable 8215C2-PM.......... 8215/8225 Dual Pass Cable * Other spare parts are available upon request. D-1 Analyzer Travel/Carrying Cases Part No. Description 801 ........................ Accessory pouch (leather; worn on belt) D22735 ................. Leather case for UltraSpec 8000 analyzer D24312 ................. Leather Case for UltraSpec 8117 analyzer 812......................... Breakaway shoulder strap for UltraSpec 8117 analyzer D24492................. Hard shell case (locking) for UltraSpec analyzer and laser fixtures D24266................. Leather case for UltraSpec 8117 analyzer D10690................. Clear vinyl sheath for UltraSpec 8117 analyzer Analyzer Accessories Part No. Description 705 ........................ 2400-baud modem (DB25(F) to Tele(F)) 705-1 ..................... Model 705 AC adapter, input 220VAC @ 50 Hz, output 9VDC @ 200 mA 720A ..................... Analyzer printer interface (DB25(M) to DB25(F)) 8003 ...................... 3-Way Splitter (DB25(F) and DB25(F) to DB25(M)) D24129 ................. UltraSpec 8117 Icon Front Panel Legend Card Temperature Sensors Part No. Description 505 ........................ Infrared temperature sensor with 615-C cable (displays in Fahrenheit) 505-C.................... Infrared temperature sensor with 615-C cable (displays in Celsius) 515......................... Laser temperature probe D-2 Accessories and Optional Products Batteries/Analyzer Chargers Part No. Description A2115-C-120 ........ UltraSpec 8000 analyzer spare battery charger, 120V, 60 or 120 mA A108-12-3............. UltraSpec 8000 analyzer battery pack, 1200 mA hr, 3-pin 660-3..................... Charge adapters for Model 105-3, 105A-3, 108-3 battery pack to charger connector (3-pin) 660-5..................... Charge adapters for Model 105-5, 108-5 battery pack to charger connector (5-pin) 8211 ...................... Laser head and UltraSpec analyzer battery charger 93140 .................... UltraSpec 8117 analyzer battery charger, 120V 8212 ...................... 8210 Sensor head and UltraSpec analyzer trickle charger Note To fast charge the battery outside the analyzer, a 660-3 or 660-5 charger adapter is required. D-3 Cables and Adapters Part No. Description Input Output 639 ............. Analyzer to computer communications cable DB9 (M) 634............... Computer to modem cable 635 .............. Analyzer to modem cable 650............... Union connector 652............... BNC Tee 654............... BNC 50Ω terminator 661............... General, 4' cable (RG59) 75Ω 662............... Hi-temperature, 4' cable (RG142) 50Ω 665............... Accel., 10' cable (RG174) 8000IQ........Infrared transceiver for analyzer to 8210 communication 80000RF ..... Radio Frequency (RF) interface for analyzer communication 800001 ........ 8210 Direct connection adapter at Analyzer 821510 ........8215/8225 Direct Connection adapter at analyzer 800002 ........ Direct connection cable interface DB25 (F) DB25 (M) DB25 (M) DB25 (M) BNC (F) BNC (F) BNC (F) 2 ea. BNC(M) BNC (F) – BNC (M) BNC (M) BNC (M) BNC (M) Microdot (M)BNC (M) DB25 (M) Infrared 800003 ........Direct connection cable interface at analyzer 8215C2-PM ...8215/8225 Dual Pass Direct Connection cable LEMO (F) D-4 DB25 (M) DB25 (M) RF DB25 (M) DB25 (M) LEMO (M)-2 LEMO (M)-2 LEMO (F) LEMO (M) (right angle) LEMO (M) LEMO (M) LEMO (M) Accessories and Optional Products Balancing Part No. Description 8000-BK ............... UltraSpec Balancing Accessory Kit, 4-channel BK1 ...................... Balancing Accessory Kit Alignment Part No. Description 8210 ...................... IR Laser Alignment Fixtures with 10 mm by 10 mm PSD’s 8215 ...................... RF Laser Alignment Fixtures with 10 mm by 10 mm PSD’s 8225...................... RF Laser Alignment Fixtures with 20 mm by 20 mm PSD’s D-5 Customer Support CSI takes great pride in our customers and is committed to providing the highest standard of customer support. Our number one priority is to provide prompt and efficient service to all of our customers. To contact our Customer Support department, please call (865) 671-4274 (4CSI). To reach the Sales Support department, dial (865) 675-2110 and ask our receptionists to direct your call. To extend the level of support to CSI customers, we have an electronic mail system which is connected through the Internet directly to the Customer Support group. The address is: custserv@compsys.com Customer Support also has a Web page on the Internet. You can access it by visiting our corporate Web page at: http://www.CSImeansReliability.com Once there, choose the Customer Support option and a set of frames will be displayed with general information about CSI Customer Support. There are links to specific information such as TechNotes, MasterService Warranties, and Maintenance Quotes. Also, the following prompt provides a link to the Customer Support Web page. Visit our Customer Service Site for additional Customer Support information. Click on this option to access additional technical information and assistance for CSI products. D-6 Accessories and Optional Products DoctorKnow™ The DoctorKnow system was originally developed to provide a means of transferring high volume, ever-changing technical information to support personnel at CSI. Because it was so successful, further enhancements were made so that it could also be provided to CSI customers. It now provides: • A mechanism to FAX information to the customer (while on-line) and • Direct access to the Customer Support Web page (through the Internet – see previous section) In the future, Customer Support plans to include file transfer capabilities. This will allow prompt evaluation of customer data and/or setups. We also plan to provide software updates (for customers with maintenance agreements) by using the Internet. Reliability Services CSI provides a broad range of in-plant services including startups, database troubleshooting and diagnostics. Our Reliability Services Department consists of qualified individuals with experience in a variety of technologies and industries. For information, call (865) 675-2400, Ext 2358. Customer Support D-7 D-8 Accessories and Optional Products Glossary Accuracy How close a measurement is to the absolute quantity being measured. Alignment Positioning two or more machines so that the rotational centerlines of their shafts are co-linear under operating conditions. Anchor Bolts (or Hold-down Bolts) Bolts use to anchor or hold the machine to the base or foundation. Angularity The angle between two machine shaft centerlines; this angle is the same at any point along either centerline. Normally specified in rise/run. Axial Float (or End Float) Movement of one shaft along its centerline due to the freedom of movement permitted by a journal bearing or sleeve bearing. This adjustment should be set before performing vertical and horizontal moves. Backlash Normally refers to the torsional play caused by the design or degraded condition of a flexible coupling. Baseplate The surface (often made of steel plate or cast iron) to which the feet of a machine are attached. The baseplate is normally mounted on a foundation and grout. Baud Rate Unit of speed for data transmission over a serial communications link. The UltraSpec analyzer supports rates from 300 to 76.8K baud. G-1 Bolt Bound The situation whereby the machine cannot be moved in the desired direction (either horizontally or vertically) because of mounting bolt restrictions, or a limited number of shims. Brackets (or Fixtures) Components that mount to machine shafts or couplings to measure the relative position of the centerlines of two machines. Coefficient of Thermal Expansion The constant value or factor of expansion of a metal for a given increase in temperature per length of the metal. This is different for each type of material. Cold Alignment (or Static Alignment, or Primary Alignment) Condition in which machines are normally aligned. Changes in off-line to on-line running conditions should be allowed for during this procedure so that the machine will “grow” into alignment during operation. Co-linear Two or more lines positioned in space with no offset or angularity between them. Co-planar Lying or acting in the same plane. CPM Cycles per minute. (Same as RPM.) Current Job Job in the UltraSpec analyzer that is currently active – the one that can be easily modified. Dodd Bars A secondary alignment method. Dutchman A tapered filler ring for squaring cocked flanges, or a ring of uniform thickness used to fill pipe gaps. G-2 End Float See axial float. Essinger Bars A secondary alignment method, or method to measure off-line to on-line running condition change. Face-rim Method (or Rim-face Method) A method of shaft alignment measurement where the indicators are mounted radially and axially on one machine or the other (not both). Firmware A term referring to the software that controls or instructs the function of the UltraSpec analyzer. Fixtures See Brackets. Foundation The surface, often made of concrete, to which the machine baseplate is mounted, often with grout between the baseplate and foundation to provide even support. Frame Distortion Index Method of measuring how much a Soft Foot condition will distort a machine casting (casting distortion affects the alignment). Frequency Number of times an event repeats in a specific period of time. Hertz The measurement of frequency in cycles per second. Hold-down Bolts The bolts anchoring or holding the machine to the baseplate and foundation. Inclinometer A device that indicates the rotational position of shafts. G-3 Induced Soft Foot A type of soft foot that is caused by external forces (coupling, pipe strain, etc.) acting on a machine independent of the foot to baseplate connection. In-phase When applied to alignment brackets, the term means the Move and Fixed brackets make the same angle with the horizon at each point of measurement. Jackscrew (or Jackbolt) A bolt or screw attached to the base or foundation that is used to move or position the machine (normally horizontally but sometimes vertically) which is being moved. Jackshaft A long shaft used as a spacer between two machines. Job Usually identified with a number and description; represents data accumulated during an individual alignment session. Machinery Train Three or more machines that must be aligned to one another. Master When used as a communications term, it is the unit that controls and determines when data will be transferred. In the UltraSpec system, the P/C is the Master and the UltraSpec Analyzer is the Slave. Micrometer, Outside Tool used to measure the thickness of shims. Milliradian A unit (normally metric) used to describe the angle of one machine shaft centerline to the other. It is the equivalent of mils/inch. It can also be expressed as rise/run (1° = 17.45 milliradians). Mils A unit of measure for displacement (thousandths of an inch). G-4 Mils/Inch A unit (normally English) used to describe the angle of one shaft centerline to the other. It is equivalent to milliradians. It can also be expressed as rise/ run (1° = 17.45 mils/inch). Modem A device that enables remote communications between the host computer and the analyzer over telephone lines. Notes Specific observations that can be stored in each alignment job along with the collected data. These observations can be predefined notes or userdefined notes that have been created via the analyzer’s keypad, or a combination of the two methods. Off-line to On-line Running Condition Movement of shaft centerlines associated with (or due to) a change in pressures, temperatures and other forces between the static and operating condition. Offset Distance between rotational centerlines at any given normal plane, usually measured at the coupling midpoint. Perpendicular At right angles (90°) to a given line or plane. Pipe Strain Casing and shaft distortion caused by improper pipe flange fitup. Predictive Maintenance Technology of periodically monitoring the actual condition of machines to discover faults, to determine probable time of breakdown, and to provide scheduled downtime for repair that avoids excessive cost and lost production. Primary Alignment See Cold Alignment. G-5 RBM Reliability Base Maintenance – the modern maintenance management method that integrates preventive, predictive, and proactive maintenance strategies. This total management method not only improves detection methods but uses root cause analyses to find and correct the actual cause(s) of the problems thereby eliminating unpredictable failures in the future. Repeatability The consistency (or variation) of readings and results between consecutive sets of measurements. Resolution The smallest change or amount that a measurement system can detect. Reverse Indicator Method Method for taking shaft alignment reading with indicators mounted radially at opposite ends of a spanned section (on each machine). Rim and Face Method See Face-rim Method. Rise/Run For smaller angles, the ratio obtained when the change in offset between two centerlines is divided by the distance along either centerline (between the points of offset measurement). In effect, it is the slope of one line in a plane compared to another line in the same plane. Angularity is normally specified in mils/inch, or milliradians which is rise/run. Rotor The part (or assembly of parts) of a machine that spins or revolves as a single unit. For alignment purposes, the shafts of both machines are the rotors. RS232 A serial, asynchronous communication standard; a type designation for cables that are used to connect communications ports on host computer, analyzer, and telephone modems. G-6 Sag Deflection due to gravity acting on a cantilevered or otherwise supported object. Mechanical brackets always sag a certain amount. This sag must be corrected for if machine moves are to be calculated correctly. Secondary Alignment The act of measuring off-line to on-line machine movement. Shim A thin piece of metal material inserted between the base and machine feet to produce precise vertical adjustments of the machine centerline. Slave When used as a communications term, it is the unit that is controlled when data is transferred. In the UltraSpec system, the P/C is the Master and the UltraSpec analyzer is the Slave. Soft Foot A term used to describe any condition where tightening or loosening the bolt(s) of a single foot distorts the machine frame. Also the name of a method used to measure this condition. Spacers A generic term for any coupling that has two flex planes separated by a connecting shaft without bearings or other supports (between the flex points). Sometimes called an insert or spider. Spool Piece Any piece of pipe or shafting which can be removed from a line of piping or shafting without disturbing or disassembling any other components. The name spool piece comes from the physical appearance of the piece, often a short cylinder with flanges on the ends, that resembles a spool of string or thread. Squishy Foot A type of soft foot characterized by material (could be shims, paint, rust, grease, oil, dirt, etc.) acting like a spring between the underside of the machine foot and the baseplate contact area. G-7 Static Alignment See Cold Alignment. Stored Job A job that has been moved from the current job location and stored in memory. All the data related to that particular job will then be available for recall. TIR Total Indicator Runout. The total movement in mils that an indicator would read after the shaft is rotated 180° or 360°. Thermal Growth Movement of shaft centerlines associated with (or due to) a change in machinery temperature between the static and operating condition. Thermal Profile A secondary alignment method used to measure thermal growth. Torsional Play The relative rotation between two coupled shafts that will cause the fixtures to move out of phase with each other (also called backlash). Tolerance The maximum permissible deviation from a specified alignment position, defining the limits of offset at the coupling center and angularity. UltraMgr CSI’s database management software package used to store technology specific information such as alignment or balancing job details. Unassigned Job A job that has not been assigned to stations and machines in the UltraMgr database. G-8 Wedge Shim Use of several shims to fill the wedge shaped gap of a bent foot. Each shim is inserted to a different depth so that a stair-step shaped support is built to better support the entire foot. G-9 G-10
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