GSI Grain Storage benefitted in several key ways following installation of the Novus FieldLogger. The main problems that arise during the testing phase can be due to incorrect installation of instruments and accessories. After having defined the type of instrument best suited to the needs, if the measurement is performed by indirect insertion, the accessories of the measuring system, such as current and voltage transformers must be chosen with care. A current transformer suitable for the application must therefore be selected. In a three-phase system, instruments can be installed that measure the single electrical parameter, one per phase, or a voltmeter and a current can be installed with the voltage and current switches, allowing the measurements to be displayed in sequence. There are different families of products on the market: instruments which measure a single electrical parameter (voltage, current, frequency, and phase angle cosϕ), generally used in single-phase systems, as instrumentation on the machine, and instruments allowing all the electrical parameters to be measured and displayed, both for the single-phase system and for the three-phase system. Before digital instruments begin to operate, they must be set with measurement system parameters and communication parameters.

The instrument must be selected according to the type of distribution system. Choosing a digital instrument guarantees better readability, also in low light conditions, especially for instruments with LED displays, and immediate reaction to measurement variation. Even better is Ethernet cable, because it is twisted and often shielded. A precision plastic hybrid 10K-ohm potentiometer delivered a voltage divider output signal that was linearly proportional to the travel of the spring-loaded measuring cable, based on the movement of the grain bins, which the FieldLogger then read and recorded at 1 reading an hour. The Novus FieldLogger functioned as a versatile yet powerful data acquisition and SCADA system which the product engineer found simple to use. Use Laurel’s 6-wire data cables CBL03-1 (1 ft) and CBL03-7 (7 ft) to interconnect meters if these lengths fit your application. To get the solar PV power from the roof down to the basement shed, we purchased 20 meters of 6mm armoured cable; this was routed down the back of the house and into the shed through the stone wall. These devices allow you to view and modify the parameters of heat controllers, connected to the RS485 port via the communication protocol and the NCP to monitor the parameters of heat meters (Mbus), connected to RS232 port via a converter RS232/Mbus (M-bus master).

Our plans to upgrade our solar PV system this year are slowly progressing with installing a new Solis 1.5kW inverter and an EM112 Series Energy Meter, which have RS485 output and communicate using Modbus protocol. The sizing of the measurement system begins with knowing the main parameters of the plant; in particular, from the characteristics of the protection switch, the type of distribution system, the rated current, the rated voltage and the type of busbar can be known. GSI Grain Storage installed a Novus FieldLogger data acquisition system in a grain storage bin that was repeatedly loaded and unloaded into the storage floor area to measure the separation of the floor sections. The product engineer then connected the FieldLogger to a Celesco SM2 miniature string pot to detect and measure linear position and velocity over time. Especially when the transmission is carried over a long wire outdoor, the wires is potential to carry the dangerous signal like lightning or other high voltage induction.

If there is a large potential difference between neutral and earth, this could negatively affect the measurement, in the case of instruments with non-galvanically isolated measurement inputs. This analog and digital variables data logger featured 8 configurable analog inputs that could read thermocouples, Pt100, Pt1000, voltage and current signals. The only possible reference is the reading of the displayed value, for example, of the current. This high performance and high connectivity equipment also offered personnel easy configuration and operation to get the project underway as quickly as possible. Therefore it is possible to use the AVR1284-3U board with 64k, 32k, rs485 cable and 16k microcontrollers to save money. The board with dual RJ11 jacks is the more popular since is can use commercial straight-through, non-reversing, 6-wire data cables with RJ11 connectors. With this boards, a CBL03 lines with RJ11 connectors can branch out to support an RS485 line consisting of three discrete wires. LCD displays can be connected using 1x16, 2x7 or 2x8 connectors. From there, the data logger insures that their processes are completed at the correct parameters and can also send out alerts if the data exceeds preset levels. If not only the electrical parameters are to be monitored, but also the energy consumption, measuring instruments which also have active and reactive energy metering should be selected.