PECM Issue 34 2018 | Page 159

measuring tubes high working frequency of over 200 Hz, the coupling of installation vibrations or similar oscillations into the measuring system is prevented and so with avoiding fault signals. A further advantage in mounting the sensor coils on a motionless PCB is the elimination of open wiring within the sensor, as is the case of standard commercially available devices. This wiring often presents a vulnerable weak point, since the wire and its point of connection must vibration continuously with the frequency of the measuring tubes. With the exception of the laser welded measuring tubes, the HPC consists essentially of a solid drilled and tapped stainless steel block. Furthermore, the HPC has been stripped of a splitter at the inflow of the tubes, instead possessing a reservoir – in which the process pressure distributes the fluid exact into the measuring tubes, hence preventing flow disturbances generally caused by splitters. This technique has the timesaving advantage of one less component to weld as well as one less potential material stress source. The result is an extremely robust device capable of withstanding temperatures and pressures of up to 180 °C and 600 bar respectively. “In principle, the device may also be ordered with Hastelloy tubes and other alloys”, added Schramm. Variable Assembly Concept For flexible installations, different constructive variations of the HPC are available: Besides the traditional Inline Version, which can be inserted directly into the process line, there are three further models available, which are suitable for either wall mounting, by means of wall brackets, or may simply be placed on a table. “For our Table model there are two available options: either with the measuring pipes pointing downwards below the supply line or pointing upwards above the supply line. For the measurement of gas, upward pointing tubes are recommended to prevent any issues with fluid collecting in the tubes. The same also goes visa versa for the measurement of fluids”, Schramm remarks. Collectively, the devices are available in three measuring ranges: 0–20, 0–50 and 0–160 kg/h. On request other adaptations are also available, for example, customer-specific enclosures, connectors or interfaces. In particular for the chemical and semiconductor industry, fully-welded stainless steel enclosures are also available. was drastically reduced, reducing so with development costs significantly”, Schramm says contentedly. Furthermore, with the aid of the simulation technology customer- specific requirements can be captured and individual solutions presented in the shortest of time. The HPC was presented for the first time on the Hannover trade fair from 23rd to the 27th of April, simultaneously being the official launch of sales. Furthermore, ATEX and IECEx approvals are also planned as well as a patent registration of the technology. Parallel to the launch of sales, Heinrichs Messtechnik is also working on a new miniaturized transmitter with flexible interfaces, specially designed for compatibility with the HPC. Rapid development success with High-End Simulation The whole development phase took a mere 1.5 years. To achieve this short development time, Heinrichs Messtechnik utilized a state- of-the-art simulation technology. “By these means the required number of prototypes About Heinrichs Founded in 1911 in Dusseldorf, Heinrichs Messtechnik has played a decisive role in the development and marketing of flow-meters for over a hundred years, one of its core target groups from the very beginning being the chemical and petrochemical industries. For this reason, the development of Full-Metal Area Flow-Meters was driven from the early 60’s onwards. In the mid-1980’s Heinrichs developed and marketed, as the first European company, a mass flow meter according to the Coriolis principle, systematically increasing its range of Coriolis meters in the following years. Further information can be found at: www.heinrichs.eu