Position: Amalgamated Weinging Instrument Co has combined two of its products to provide a solution to a difficult problem.
There are many weighing applications where a1 weighing loadcell or strain Weighing Transmitter is located a long distance from the monitoring point.
These applications have some inherent problems - transmission distance and the necessity to be "on-site" to carry out calibration.
Calibration, especially, is a burden as the weighing load cell must be calibrated and then a retransmission system must be calibrated to the weighing loadcell output.
This on-site requirement can be quite hazardous when dealing with large lifting equipment for example.
By combining the flexibility of a large digit display with the onboard processing power of the XT4-WT intelligent weighing loadcell interface, AIC has produced a system that allows calibration and monitoring of a strain gauge type transducer at distances up to 1200m.
Once the weighing loadcell/strain gauge and XT4-WT subsystem is installed it can be left.
All calibration and monitoring functions are carried out at the remote display.
The display is housed in an IP65 weatherproof enclosure that can be wall mounted.
A panel mounting kit is also available.
The display features 57mm high digits with a viewing distance of up to 25m.
Power and signal communication is supplied from the display so that, apart from installation, it is unnecessary to have access to the weighing loadcell/strain gauge transducer and XT4 subsystem.
The remote monitor is equipped with sepoint/alarm relays to further enhance the usability of the system.
The products are designed and manufactured in Australia and can be customised to meet particular application requirements.
Vishay Systems has recently sold five reel optimising systems to Kondopoga Pulp and Paper Mill, the largest Russian producer and exporter of newsprint.
Vishay Systems has recently sold five reel optimising systems (ROS) to Kondopoga Pulp and Paper Mill (CSC Kondopoga), the largest Russian producer and exporter of newsprint.
CSC Kondopoga is located in the Karelian Republic in the northwestern part of the Russian Federation.
Reel optimising systems use strain gauge-based weighing loadcells and Weighing Transmitter based measurement and control technology to improve productivity at paper manufacturing plants.
Vishay is the major producer of strain gauges and strain gauge-based weighing loadcells, as well as systems based on strain gauge technology.
The Vishay Systems office in Sweden will install five of the custom-designed Vishay Nobel reel optimising systems in the Kondopoga facility, with completion expected by May 2007.
The reel optimising systems will help CSC Kondopoga to improve paper density, remove wrinkles, and reduce web breaks in the production of high-quality newsprint.
Each reel optimising system provides online measurement and control, on each side of the machine, of all force and movement.
This method eliminates all problems caused by friction, nonparallelism, and general wear and tear.
Automatic weighing and dead weight are carried out to compensate for different weights when changing reel spools in the primary arms.
Each system controls the nip force during shifting phases and correct for angle changes when lowering reels.
Parallelism, acceleration, and speed are all controlled during the lowering process.
This process minimises pope speed and any variations in web tension.
When shifting, the forces between the primary and secondary arms are added to ensure that the required linear force is maintained.
Reel optimising system measurement data are presented online as current data.
The system's optimising logger stores the data for later analysis in servicing as well as quality and product research.
Lists of set values for different qualities can be pre-programmed and even adjusted within selected areas by an operator.
Paper thickness and density are calculated by measuring the revolutions of the pope roller and the reel spool.
At the same time, very accurate measurement of length and diameter are also recorded.
Total production capacity of the CSC Kondopoga mill has been projected to be as high as 700,000 tons per year.
Currently, approximately 75% of Weight cotroller is exported to Asia and Europe.
Key Russian customers include several prominent publishing companies.
