Maintenance, Test & Measurement, Calibration


Keeping the clean room more than clean

January 2021 Maintenance, Test & Measurement, Calibration

Industrial, manufacturing and scientific clean rooms, by the very nature of their activities, are required to maintain extremely high levels of cleanliness. This means it is imperative to monitor differential pressure, temperature and humidity to keep compliant with local and international standards.

The Delta OHM HD50CR multi-functional clean room logger/transmitter device offers the user highly accurate clean room monitoring, along with documentation for quality purposes. Any measurement recorded out of range will trigger an alert via a predetermined list of email addresses, configured upon installation.

“The main advantage of the new monitoring device is its webserver flexibility,” said Jan Grobler, managing director of GHM Messtechnik South Africa. “Configuring the instrument is simple and can be done through any device that has been granted access to the instrument’s webserver, be it a smartphone, PC or laptop.”

The system is password protected and configuration can also take place offline by connecting the instrument to a PC with the free software installed. The instrument is pre-set to get a dynamic IP address from the network DHCP server. A static IP address can be set by using the webserver feature of the instrument or the HD35AP-S application software.

The HD50CR offers a differential pressure reading range of +/-125 Pa with an accuracy of 0,35% of measuring span. With zero drift self-calibration and a temperature drift of 0,5% of measuring span, the device’s units of measurement are Pa, mmH20, mbar, inH20 and mmHg. A variety of measuring/logging intervals are available and there is an optional T/RH probe.

The instrument will calibrate automatically at configurable intervals, the zero of the differential pressure temporarily disconnecting the pressure inputs through an internal solenoid valve.

“The HD50CR provides a perfect solution for the tracking of out-of-range values and provides evidence for any quality audit that may be conducted,” concluded Grobler. “Delta OHM has developed the instrument specifically for clean room applications, and optional modules can be provided to meet tighter regulations that may be applicable to the pharmaceutical industry. It is an excellent choice to ensure clean rooms are accurately monitored and their standards maintained.”

The HD50CR is well suited to clean room applications across all industries, but in particular to laboratories in food and pharmaceutical manufacture, as well as at chemical and petrochemical facilities.


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