To determine the transitions that compose each pulse, pulsesep estimates the state levels of x by a histogram method. Realistic simulation of radar pulses and complex radar. Time counter a is started when displacer or flag 24 trips. June 2005 part 2 small volume provers history, design.
Please fill out the following form to request an evaluation copy. With all background correction systems, there is a small time delay between the. An electronic circuitry was built to activatedeactivate counters gates, and to collect pulses. Pulse interpolation is a pulse counting technique used to calculate the total number of meter pulses between two detectors, including fractional pulses. Double chronometry for api meter proving as described in api mpms chapter 4. Metering simulators hardware products swinton technology. 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. Taking these measurements multiple times within required repeatability values allows for the calculation of the new kfactor. Builtin redundancy for dual power supply, dual ethernet and software. Pattern editing and control graphical waveform editor and control software for pulse instruments pi2005 patten generators, including pattern generators integrated into our test systems. These comparisons do, however, suggest that these three pulse contour methods are not interchangeable. The module also measures the fluid density of the fluid in the proving loop. We offer emarketing, sales, service, project management, inventory and financials. 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.
May 20, 2008 double chronometry pulse interpolation uses a high frequency master oscillator which increments time very precisely e. What flowmeter calibration techniques do litre meter use. Double chronometry pulse interpolation uses a high frequency master oscillator which increments time very precisely e. Select either windows or dos software based on step 2. To determine the transitions for each pulse, pulseperiod estimates the state. 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. 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. Metrology approvals1 include mid, oiml r117, and en12405.
Data acquisition and control software were written using vb. Generate pulses for twelvepulse and sixpulse thyristor. 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. A single software command switches between the modbus and laurel ascii protocols. Prover support with unidirectional, bidirectional, compact prover, master meter, with dual chronometry and pulse interpolation with a resolution of 100ns. Unlimited number of period and batch totals and flow and time weighted averages. We introduce the complex amplitude and the corresponding power of a gaussian pulse according to at a 0 exp t2 2t2 0. The wt signal is an angle varying between 0 and 2pi radians, synchronized on zero crossings of the fundamental positivesequence. This problem can be resolved by using pulse interpolation based on pulse chronometry techniques, similar to those described in api mpms chapter 4. Eliminates miles of field wiring during installation and the signal deterioration this generates. Onboard storage 1 gb for audittrail, event and primary data logging in. Compact, unidirectional, bidirectional, master meter, dual chronometry, pulse interpolation. Instrumentation with timers, counters and pulse interpolation see diagram 6.
Interpolation kernel can be pregenerated in subsample intervals and stored in a table. Dual chronometry pulse interpolation english to french. The pulse generator thyristor block is controlled by the alpha angle reference signal and by the synchronization signal wt. Details of every prove will be recorded in the truproof micro3 microcomputer, and transferred to associated systems, such as, flowcals proveit proving software platform. 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.
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. Implementation of doubletiming pulse interpolation applied. This we achieve by double chronometry pulse interpolation while proving the master meter w. Svps require the use of an operating computer that is capable of dual chronometry pulse interpolation. Pulse contour cardiac output relies on a good quality of arterial trace. The module being operably connected to a flow meter. Onboard storage 1 gb for audittrail, event and primary data logging in each module. 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 is used in much the same way as for dual.
Double chronometry for api meter proving as described in api mpms. There are currently 3 main approaches to pulse interpolation. 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. Full support for redundancy builtin, for power supply, ethernet, and in the software. Chapter 4proving systems section 6pulse interpolation. Potential users are cautioned that use of the technique absent the requisite accuracy can produce misleading results. All of our software is designed by pulse instruments for optimum flexibility and control. Computational cost is proportional to kernel length. Indication green led indicates when pulse input is on. The use of the dynamic density values provides for a more accurate. Calibration curve up to unlimited number of points linear and polynome. Separation between bilevel waveform pulses matlab pulsesep.
Sep, 2015 this we achieve by double chronometry pulse interpolation while proving the master meter w. Automated pneumatic spring plenum pressure control. 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. Litre meter have developed a simple program that enables quick monitoring of. Accuracy of sinc interpolation can be seen in frequency domain by comparing kernel spectrum to ilpf spectrum. This master oscillator operates two counters which may be referred to herein as time counter a and time counter b. Unhaltable, normal, period, error, maintenance, positive and. When used with dual pulse turbine meters, the apm can be used to create two api 5. 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. Uses pulse interpolation dual chronometry for small volume provers svp. Dual pulse input totalizer modbus or laurel ascii protocol. This allows for more accurate interpolation of transient signals such as gf and hsa 3000 signals. 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. 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.
If pulseperiod does not find two positivepolarity transitions, p is empty. Chronometric definition of chronometric by the free dictionary. Pulse business software delivers innovative cloudbased business solutions to suit small, medium and corporate businesses. Period of bilevel pulse matlab pulseperiod mathworks. The complimentary flowxpress software allows for virtually unlimited.
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. B2 others applied for, truproof is the most advanced dual chronometric, pulse interpolation proving technique in the world today. Smith meter turbine meters utilizing the smith meter. Pulse interpolation is calculated in compliance with api mpms chapter 4. M factors computed by the software to the system and enjoy another. The machine requires the use of an operating computer that is capable of dual chronometry pulse interpolation. Dual chronometry pulse interpolation provides fractional pulses for small volumes. A pulse interpolation method used in small volume provers to provide for fractional meter pulse counting.
All of the components including a choice of fluid reservoirs are together in one enclosure, temperature controlled, to maintain consistency. Some requirements and limitations of pulse interpolation techniques. Through the use of pulse interpolation, meter proving can be accomplished with less than. The pulseinterpolation method known as doublechronometry, described in this chapter, is an established technique used in proving flowmeters. The controller being operably connected to a module. Determining parameters for images amplification by pulses. 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. Time taken to displace voume in the compact prover. Hello, im supposed to design a transmit chain with a rootraised cosine pulse shaping filter followed by some interpolation stages.
Accuracy of interpolation dependent upon kernel length. Time taken for the generation of pulses in the flow meter. The module senses a series of pulses that represent a known fluid volume in a proving loop. Index pulse interpolation double chronometry method topics that. Pulse interpolation flow measurement detector radio.
The rrcfilter shall interpolate by 2, and its output shall be interpolated by 8, resulting in a total interpolation of 16. Hyperpulse background correction the hyperpulse background corrector, one of the fastest systems available, has been further improved by pulse interpolation. Dynamic fluid measurement sfc3 liquid pulse manual quick start 16 date. Implementation of doubletiming pulse interpolation applied to. A method and apparatus for utilizing a controller to monitor a flow volume in a fluid transportation system. Implementation of doubletiming pulse interpolation. Double chronometry pulse interpolation requires a high frequency master oscillator which. Chronometric definition of chronometric by the free. There are different types of prover arrangements in the market 3,57.1166 1436 170 41 1066 1584 498 205 100 1052 822 1364 371 1264 336 375 1194 739 1287 1154 1404 348 692 670 340 228 1557 1118 1021 391 1312 213 695 946 1464 379 1232 1163 475 680 1081