The rrcfilter shall interpolate by 2, and its output shall be interpolated by 8, resulting in a total interpolation of 16. Smith meter turbine meters utilizing the smith meter. This master oscillator operates two counters which may be referred to herein as time counter a and time counter b. Please fill out the following form to request an evaluation copy.
Implementation of doubletiming pulse interpolation applied to. There are currently 3 main approaches to pulse interpolation. This allows a better reconstruction of the details including the use of the characteristics of this type of amplification in order to achieve linear phase response in the edge transitions of the high resolution image. To determine the transitions that compose each pulse, pulsesep estimates the state levels of x by a histogram method.
To determine the transitions for each pulse, pulseperiod estimates the state. The maxiflex meter prover module is used in meter proving systems for petroleum measurement the mx mp module uses pulse interpolation a method of doublechronometry for increasing the resolution of flow metering pulses when proving meters. Pulse interpolation function standards compliance performs all logic necessary to perform automated meter proving, and performs pulse interpolation using the double chronometry method in accordance with the manual of petroleum measurement standards chapter 4 proving systems. Dual chronometry pulse interpolation provides fractional pulses for small volumes. S pulsesepx returns the differences, s, between the midreference level instants of the final negativegoing transitions of every positivepolarity pulse and the next positivegoing transition. M factors computed by the software to the system and enjoy another. Double chronometry pulse interpolation requires a high frequency master oscillator which. Hello, im supposed to design a transmit chain with a rootraised cosine pulse shaping filter followed by some interpolation stages. This allows for more accurate interpolation of transient signals such as gf and hsa 3000 signals. Time taken to displace voume in the compact prover. Pulse interpolation flow measurement detector radio. While only the dual chronometry method is illustrated in the api manual of petroleum measurement standards, this does not preclude the use of other methods, as long as they meet the criteria and test.
Dual pulse input totalizer modbus or laurel ascii protocol. Metrology approvals1 include mid, oiml r117, and en12405. This we achieve by double chronometry pulse interpolation while proving the master meter w. Unhaltable, normal, period, error, maintenance, positive and. Unlimited number of period and batch totals and flow and time weighted averages. The complimentary flowxpress software allows for virtually unlimited. Compact, unidirectional, bidirectional, master meter, dual chronometry, pulse interpolation.
We offer emarketing, sales, service, project management, inventory and financials. Implementation of doubletiming pulse interpolation. The pulse generator thyristor block is controlled by the alpha angle reference signal and by the synchronization signal wt. All of our software is designed by pulse instruments for optimum flexibility and control. St500 is one of a range of new generation simulators designed to meet the requirements for checking and calibrating fiscal and custody transfer flow computer systems. A method and apparatus for utilizing a controller to monitor a flow volume in a fluid transportation system.
Instrumentation with timers, counters and pulse interpolation see diagram 6. Taking these measurements multiple times within required repeatability values allows for the calculation of the new kfactor. There are different types of prover arrangements in the market 3,57. Eliminates miles of field wiring during installation and the signal deterioration this generates. Time taken for the generation of pulses in the flow meter. Pulse interpolation is a pulse counting technique used to calculate the total number of meter pulses between two detectors, including fractional pulses. Pulse instruments specializing in meters and controls for ph, orp, oxidation reduction potential, ec, conductivity, tds, level, flow, ise electrodes, isfet ph meters, water treatment instruments, sanitizer and many others. All of the components including a choice of fluid reservoirs are together in one enclosure, temperature controlled, to maintain consistency. Separation between bilevel waveform pulses matlab pulsesep. A pulse interpolation method used in small volume provers to provide for fractional meter pulse counting. June 2005 part 2 small volume provers history, design.
Prover support with unidirectional, bidirectional, compact prover, master meter, with dual chronometry and pulse interpolation with a resolution of 100ns. Utilizing dynamic density values with the dual chronometry pulse interpolation standard equation of api 2540 takes into account the effects that changing pressure and temperature of the fluid and the material of the conduit 16 itself will have on the calculated flow volume. An electronic circuitry was built to activatedeactivate counters gates, and to collect pulses. Onboard storage 1 gb for audittrail, event and primary data logging in each module. Some requirements and limitations of pulse interpolation techniques. A single software command switches between the modbus and laurel ascii protocols. Computational cost is proportional to kernel length. Indication green led indicates when pulse input is on. P pulseperiodx returns a vector, p, containing the difference between the midreference level instants of the initial transition of each positivepolarity pulse and the next positivegoing transition in the bilevel waveform, x. When used with dual pulse turbine meters, the apm can be used to create two api 5. Select either windows or dos software based on step 2. Litre meter have developed a simple program that enables quick monitoring of.
Double chronometry for api meter proving as described in api mpms chapter 4. Uses pulse interpolation dual chronometry for small volume provers svp. Time counter a is started when displacer or flag 24 trips. Potential users are cautioned that use of the technique absent the requisite accuracy can produce misleading results. Chronometric definition of chronometric by the free dictionary. Options include dual solid state relays for local alarm or control and an isolated 420 ma or 10v selectable analog output, effectively providing a linearized analog transmitter output that tracks the reading that would be transmitted digitally. The wt signal is an angle varying between 0 and 2pi radians, synchronized on zero crossings of the fundamental positivesequence. Without pulse interpolation a prover that is 3 to 25 times larger than standard would be required to obtain a minimum of 10,000 counts per proving pass. The module also measures the fluid density of the fluid in the proving loop. Performs pulse interpolation calculations in real time. Index pulse interpolation double chronometry method topics that. Double chronometry for api meter proving as described in api mpms. Sep, 2015 this we achieve by double chronometry pulse interpolation while proving the master meter w. Pulse interpolation is calculated in compliance with api mpms chapter 4.
Mar 25, 2004 utilizing dynamic density values with the dual chronometry pulse interpolation standard equation of api 2540 takes into account the effects that changing pressure and temperature of the fluid and the material of the conduit 16 itself will have on the calculated flow volume. Pattern editing and control graphical waveform editor and control software for pulse instruments pi2005 patten generators, including pattern generators integrated into our test systems. Realistic simulation of radar pulses and complex radar. Dynamic fluid measurement sfc3 liquid pulse manual quick start 16 date. Automated pneumatic spring plenum pressure control. The controller being operably connected to a module. The range combines uptodate microprocessor and direct digital synthesis technology with easy to use, menudriven lcd operation. The reason given by the authors is the use of different proprietary algorithms, which measure different aspects of the pulse contour waveform which is an interesting point. Chronometric definition of chronometric by the free.
Onboard storage 1 gb for audittrail, event and primary data logging in. Hyperpulse background correction the hyperpulse background corrector, one of the fastest systems available, has been further improved by pulse interpolation. Pulse interpolation is used in much the same way as for dual chronometry, above, except that the mut and the height sensor are the two sources of pulses. This interrupt is used in the pulse accumulation between the detectors as well as the pulse interpolation calculations. Through the use of pulse interpolation, meter proving can be accomplished with less than. May 20, 2008 double chronometry pulse interpolation uses a high frequency master oscillator which increments time very precisely e. The use of the dynamic density values provides for a more accurate. The pulseinterpolation method known as doublechronometry, described in this chapter, is an established technique used in proving flowmeters. Determining parameters for images amplification by pulses. The machine requires the use of an operating computer that is capable of dual chronometry pulse interpolation.
These comparisons do, however, suggest that these three pulse contour methods are not interchangeable. The module being operably connected to a flow meter. Accuracy of interpolation dependent upon kernel length. Implementation of doubletiming pulse interpolation applied. Generate pulses for twelvepulse and sixpulse thyristor. Accuracy of sinc interpolation can be seen in frequency domain by comparing kernel spectrum to ilpf spectrum. Why then would one want to use something like this which generates x at outputs. This problem can be resolved by using pulse interpolation based on pulse chronometry techniques, similar to those described in api mpms chapter 4. Flowx series flow computers pt pratiwi putri sulung. Metering simulators hardware products swinton technology.
Pulse contour cardiac output relies on a good quality of arterial trace. The module senses a series of pulses that represent a known fluid volume in a proving loop. If pulseperiod does not find two positivepolarity transitions, p is empty. Pulse business software delivers innovative cloudbased business solutions to suit small, medium and corporate businesses. The maxiflex meter prover module is used in meter proving systems for petroleum measurement the mx mp module uses pulse interpolation a method of double chronometry for increasing the resolution of flow metering pulses when proving meters. Details of every prove will be recorded in the truproof micro3 microcomputer, and transferred to associated systems, such as, flowcals proveit proving software platform.
Calibration curve up to unlimited number of points linear and polynome. B2 others applied for, truproof is the most advanced dual chronometric, pulse interpolation proving technique in the world today. Period of bilevel pulse matlab pulseperiod mathworks. What flowmeter calibration techniques do litre meter use. Double chronometry pulse interpolation uses a high frequency master oscillator which increments time very precisely e. Data acquisition and control software were written using vb. We introduce the complex amplitude and the corresponding power of a gaussian pulse according to at a 0 exp t2 2t2 0. Full support for redundancy builtin, for power supply, ethernet, and in the software. Dual chronometry pulse interpolation english to french.
Chapter 4proving systems section 6pulse interpolation. With all background correction systems, there is a small time delay between the. Builtin redundancy for dual power supply, dual ethernet and software. Pulse interpolation, though a mathematical technique, relies on the underlying and contributing uncertainty of the prover detector signal.
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