Electricity + Control April 2019

CONTROL SYSTEMS + AUTOMATION + SYSTEMS ENGINEERING

Logging accurate measurements over time

measurements as well. Delta OHM already offers the HD35 series, based on RF (radio frequency) communication. In some cases, when networks are very wide or complex, or divided across more than one facility, a mix of cabled, WiFi and RF loggers can be the best solution. The HD50 series can be integrated in such hybrid networks. Jan Grobler, Managing Director of GHM Messtechnik South Africa, says, “Apart from easy-to-use web browser access and its ability to be applied as a stand-alone or linked to numerous networks with hun- dreds of loggers, the HD50 can support practically ‘any signal’: universal inputs make it possible to integrate any transmit- ter with standard output. “Additional software is available for a wide range of solutions: database locally on PC, database on local server or cloud based. We also offer optional software for CFR21 Part 11 which is used in the phar- maceutical sector. “The HD50 has a range of standard sensors (measuring °C / RH / lux / atm / CO 2 ) and the logger sends an email alarm

when a value is higher or lower than the set threshold.” Grobler notes further, “One of the most important features of the web data logger is its ability to store variables accurately. It can be used in any industry requiring meas- urements ‘over time’. It offers reliability as well as the latest available software for ac- curate measurement readings.” Enquiries: Jan Grobler,

The ongoing tightening up of regulations that impact on industries where the mon- itoring of measurements of illuminance, temperature, atmospheric pressure, hu- midity and CO 2 is critical – in the manu- facture and storage of electronics, phar- maceuticals and frozen foods, for example – is making South African industry take a new look at how accurately it monitors its process measurements. The HD50 Web Data Logger, available from Delta OHM, part of the GHM Mess- technik Group, is a measuring device that stores data in a memory that can be lo- cated locally (in the instrument), in a data- base (on a pc or server), or in the cloud. It can be used, for instance, to ensure that temperature spikes outside of accepted parameters are recorded and can be acted on immediately. The HD50 was developed for use with one logger, which can be extended to an unlimited network of loggers. Settings can be opened from a web browser, as it has a built-in webserver, and this makes it possible to monitor the actual

GHM Messtechnik South Africa. Tel. +27 (0)11 902 0158, or email: info@ghm-sa.co.za

The data logger can store data locally, or in a database, or in the cloud to provide for monitoring over time.