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Peak-to-valley
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Surface profilometers are contact or non-contact instruments used to measures surface profiles, roughness, waviness and other finish parameters.
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Supplier: Simpson Electric CompanyDescription: DC Process, time delay & hysteresis, peak valley Values
- Triggers: Numeric Display
- Display Technology: LED
- Digit or Character Size: 0.37" to 0.56" (9.4mm to 14.2mm)
- Standard Display Colors: Red
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Supplier: Omegadyne, Inc.Description: Compatible with Strain Gage Bridge Sensors or Ratiometric Voltage Sensors Adjustable Filtering Up to 13 Hz Displays Up to 999,999 Counts NEMA-4 Front Panel Remote Tare, Min, Max, Reset and Hold Features Min/Max (Peak/Valley) Detection
- Triggers: Numeric Display
- Display Technology: LCD
- Standard Display Colors: Red, Green
- Analog Input Type: DC Voltage, Strain Gauge
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Supplier: Interface, Inc. - AZDescription: Why the Interface series 9820 General Purpose Indicator is the best in class: Bipolar 5 digit bipolar LED display Nonlinearity < 0.01% Analog output - 10 VDC, with 2 kHz bandwidth Front panel shunt calibration, tension or compression, internal or external resistor Peak and valley
- Triggers: Numeric Display
- Display Technology: LED
- Digit or Character Size: 0.37" to 0.56" (9.4mm to 14.2mm)
- Standard Display Colors: Red
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Supplier: OMEGA Engineering, Inc.Description: , and peak/valley indication for each zone. RS485 Serial communication is optional.
- Controller Inputs: DC Voltage Input
- Control Signal Output: Current Loop, Pulse / Frequency
- Control Technique: Limit / Set Point Control
- Special Capabilities (if required): Environmental Controller, HVAC Controller
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Supplier: Weschler InstrumentsDescription: Features Tri-color and single color bars 3½, 4½, 5 and 6 digit displays Measure AC/DC volts, amps, watts, VARs, rate, time, temperature and more Up to 6 relay outputs Setpoints, Trend, Peak/Valley AC or DC powered Analog retransmit and RS232/485 communications Modbus
- Transformer Category: Current Transformer
- Type / Applications: Toroidal / Window
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Supplier: Weschler InstrumentsDescription: Features Tri-color and single color bars 3½, 4½, 5 and 6 digit displays Measure AC/DC volts, amps, watts, VARs, rate, time, temperature and more Up to 6 relay outputs Setpoints, Trend, Peak/Valley AC or DC powered Analog retransmit and RS232/485 communications Modbus
- Triggers: Numeric Display
- Display Technology: LED
- Digit or Character Size: > 0.56" (14.2mm)
- Standard Display Colors: Red
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Supplier: Weschler InstrumentsDescription: Features Tri-color and single color bars 3½, 4½, 5 and 6 digit displays Measure AC/DC volts, amps, watts, VARs, rate, time, temperature and more Up to 6 relay outputs Setpoints, Trend, Peak/Valley AC or DC powered Analog retransmit and RS232/485 communications Modbus
- Detector Type: Flying Spot
- Cooling: Uncooled
- Features & Options: Battery Powered, Built-in Color / Visual Camera, Frame Grabber Included, Portable, Removable Data Storage, Infrared / Spectral Filters
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Supplier: Interface, Inc. - AZDescription: ; +0.01% Front panel calibration Peak and valley monitoring Remote and front panel tare 4 limit setpoints Designed for CE compliance More Information For use with amplified load cells and rotary torque sensors. Features 120 readings per second, programmable +/-10V or 4-20mA analog output
- Measurement Type: Torque
- Special Instrument Type: Portable
- Measurement Features: Tare, Limits / Set Points, Peak Hold
- Output: Analog Voltage, Analog Current, Serial
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Supplier: OMEGA Engineering, Inc.Description: power. The meter provides a peak HI and valley LO reading memory with selectable capture delay time. The capture delay is used to prevent detection of false peak or valley readings that may occur during start-up or unusual process events. The peak and valley readings are stored at power-down
- Triggers: Numeric Display
- Display Technology: LED
- Digit or Character Size: 0.37" to 0.56" (9.4mm to 14.2mm)
- Standard Display Colors: Red
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Supplier: Allied Electronics, Inc.Description: Brain Board, Rack Mounting, 16 Channel, 5 VDC Power Source Read point Write point Input averaging Min⁄max (peak and valley) recording Gain and offset calculation Waveform generation It is intelligent digital processors that operate as slave devices to a host computer. Each
Featured Products for Peak-to-valley Top
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Melles Griot Absolute ™ transmission flats cost-effectively increase the absolute accuracy of Zygo®-style fizeau surface- and wavefront-testing interferometers to λ/50 (peak to valley), without the need to store, manipulate, or subtract reference wavefronts during the testing process. When reference wavefront subtraction is employed, the absolute accuracy is significantly greater than λ/50 (peak to valley). Absolute fizeau transmission and reference flats are produced using... (read more)Browse Datasheets for CVI Melles Griot -
The DFI Infinity bench top or panel indicator, is a versatile six digit process controller with 1 microvolt resolution. The Infinity can be calibrated to any 350 ohm strain gage transducer via the front panel push-button or the optional serial communications board. This portable unit allows the user to scale and offset their input signal into any engineering units desired. Standard features include peak and valley hold, zero tare and 4 alarm set points. Other options available are duplex RS 232... (read more)Browse Digital Readouts Datasheets for Cooper Instruments & Systems
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to the application. Gross, net, peak and trough (valley) measurements are easily selected. An annunciator indicates which range has been selected. There is also a window to insert a legend describing each range. Once these parameters are set, it provides the user with the simplest of indicators. FEATURES: Portable, handheld precision instrument weighing only 250 g. 7½ digit LCD display, with battery, peak, trough, net, error, and shunt cal indication. Tactile keyboard, with dual-range selection, peak... (read more)Browse Force and Load Sensors Datasheets for Honeywell Test & Measurement
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linearity. Battery voltage of the MasterLink 3000 can be monitored as well. Peak and valley conditions are inherently captured utilizing the logging capability of the software. Up to 40 hours of operation on a rechargeable battery makes the MasterLink 3000 a reliable and low maintenance wireless solution. There's simply nothing like it on the market. (read more)Browse Load Cells Datasheets for Cooper Instruments & Systems
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Standard Features. Front panel scalable to ±99,999 for external current shunts. Up to 60 conversions per second. Peak or valley capture & display. Selectable adaptive digital filter. Selectable fixed zero or active least significant digit. Universal AC power, 85-264 Vac. 5, 10 or 24 Vdc excitation supply. External controls for reset, meter hold and decimal points. NEMA 4X, 1/8 DIN case. Certified to EN 61010-1 (CE mark), and RoHS. Options. Serial communications: Ethernet Interface, Ethernet... (read more)Browse Digital Panel Meters Datasheets for AA Electric
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Melles Griot Absolute ™ Fizeau λ/50 reference spheres record and store reference wavefronts for subtraction from interferometric test data, improving your system's absolute accuracy to greater than λ/50 peak-to-valley @ 633nm. Absolute reference spheres are produced using advanced subaperture stitching interferometry (SSI®) and magnetorheological finishing (MRF®). Both concave and convex versions are available. (read more)Browse Datasheets for CVI Melles Griot
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cost-effective performance in household appliances, chemical equipment, sporting goods and other applications. The material performs well in both dry and lubricated operating conditions. Maximum static load is 50 N/mm2; maximum sliding speed dry is 1 m/s; operating temperature range is -50oC to +170 oC; coefficient of friction dry is 0.22-0.37; required peak-to-valley height of the ground sliding partner is 0.3 ± 0.2 μm; and recommended hardness of the sliding partner is >200 HV. The PV limit... (read more)Browse Plastic Bearings Datasheets for GGB
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and all the accuracy and ruggedness of a pressure transducer. The bright and easy to read digital display is 4 digits and 3/8" high. Conveniently located on the front face are; zero, peak/ valley and on/off buttons. Battery powered version or AC Adaptor versions are available. Automatic shut-off saves battery life on battery version. Various pressure adapters may be purchased. gage, absolute, differential or vacuum. high over pressure rating. peak & valley hold. automatic shut-off. intrinsically... (read more)Browse Pressure Gauges Datasheets for Cooper Instruments & Systems
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transducers, multi-point and mV/V calibration, remote sense excitation, and a 24-bit internal resolution with 16-bit analog output. CellMite® 4325B Features: Single channel. 2-pt mV/V Calibration. 6-pt Linearization Calibration. Scalable +/-10V Analog Output. 16-Bit Analog Output. Direct to PC with RS232 Data. 24 Bit Resolution. Multiple Filter Selections. Storage for 3 Calibrated Transducers. Remote Sense Excitation. Addressable for Serial Network. Tare, Peak, Valley. Unit Support: In, Cm, mm, %... (read more)Browse Signal Conditioners Datasheets for Electro Standards Laboratories
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The PSD portable strain gauge indicator or load cell display combines extremely high resolution and low power with the convenience of a hand held display and keypad. The 7 digit LCD display has peak and valley hold facilities. Calibration modes are auto, mv/v table or digital gain and offset. The display is TEDS enabled for automatic sensor calibration. RS232 output can be chosen as an option allowing connection to any RS232 interface whether it's a PC or simple data logger. See the PSD232... (read more)Browse Signal Converters Datasheets for Micron Instruments
Conduct Research Top
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Mean Peak to Valley Height (Rtm, Rz)
Mean peak to valley height is the difference between the highest peak and lowest valley in each sample on the evaluation length. Usually, the assessment length is divided into five sampling or cutoff lengths. Rtm is not as sensitive a single high peak or low valley measurement of the profile
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Maximum Roughness Depth (Rmax, Ry)
Maximum roughness depth refers to Rmax or Ry. Rmax is the maximum peak to valley profile height. Rmax, Ry, Rz1max or Rymax has the highest value of all peak to valley surface texture parameters. The single roughness depths are first determined by measuring the peak to valley distance within each
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Measuring Surface Slope Error on Precision Aspheres (.pdf)
Optical designers are becoming increasingly aware of the importance of specifying and tolerancing slope errors on optical surfaces, especially aspheric surfaces. Slope errors can degrade system optical performance - in some cases even if the peak to valley surface figure errors meets the optical
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Multiaxial fatigue models the real world
is minimal and that uniaxial conditions exist. Mobility refers to a stress factor with a wide range of excursions -- it's not stationary along one plane. Stress cycles that show mobility should be eliminated with peak-and-valley-slicing because they have no influence on damage to the component under test
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Straightness Measurement
. Straightness can be measured using the minimum zone or least-squares methods. With a least-squares method, a reference or centerline is fitted to the surface or feature. The areas above and below the reference line are equal and kept to a minimum separation. The highest peak-to-valley measurement normal
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Flatness
, and kept to a minimum separation. The highest peak-to-valley normal measurement provides an indication of part flatness. Flatness can also be analyzed with the minimum zone calculation method. The surface data to be analyzed is enclosed by two parallel planes with only minimal separation. The level
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Using Optical Flats
in fractions of a reference wavelength, 632.8nm. A 1/20 wave flat will have a maximum peak to valley deviation of 632.8/20 or 31.64nm. We offer five different levels of accuracy for our single surface flats: 1/4 wave, 1/10 wave, 1/20 wave, 1/60 wave and 1/100wave. For our dual surface flats, 1/4, 1/10
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Surface Texture Parameters
technique that effectively uses two. parallel planes to "squeeze" the surface data points from. both inside and outside, adjusting the angle to minimize. the distance between the planes. Pt ISO. Total peak-to-valley profile. height. The distance. between the highest peak. and the deepest valley over
Engineering Web Search: Peak-to-valley Top
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Peak Detector PtByPt VI - NI LabVIEW 8.6 Help
The default is 3. If width is an odd number, the VI can find a peak or valley only at the position (width + 1)/2.
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Peak Detector (Not in Base Package) - LabVIEW 7.1 Help -...
Notice that in real time processing, peaks/valleys are not detected until approximately width/2 data points past the peak or valley.
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State Water Resources Research Institute Program
Title: Impacts of surface mine valley fills on downstream peak flows in eastern Kentucky
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Hydroelectric Power: How it works, USGS Water Science for...
Take a look at this diagram (courtesy of the Tennessee Valley Authority) of a hydroelectric power plant to see the details:
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BATSE Solar Flare Server
To access monthly BATSE event listings containing start and peak time, duration, peak counts, burst trigger, and triggertime seconds, click on
- Copper - Wikipedia, the free encyclopedia
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Solar flare - Wikipedia, the free encyclopedia
Classification Peak Flux Range at 100-800 picometer (Watts/square meter)
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Table
Valley current mode Yes No No 300 13.5
