Our MBW CALIBRATION™ MODEL 373™ dew point chilled mirror hygrometer has been measuring humidity for almost 20 years. Incremental development based on operational experience and customer feedback means that the 373 continues to exceed the expectations of hundreds of users in some of the most challenging humidity applications and mission critical industries. Despite its high performance and specification, the 373 is easy to use and simple to maintain. The touch panel user interface is simple and intuitive to use and enables even inexperienced users to perform measurements successfully. Even early instruments remain serviceable thanks to the use of industry standard components and careful control of software build records.
A unique feature of the 373 is its dual mirror PRT configuration. In standards laboratories, this means that the user can use an external resistance bridge to measure the mirror temperature independent of the 373 electronics so that measurement uncertainty can be reduced, and long-term stability maintained in the event of changes to the 373 measurement electronics. The latest 373 developments include improved materials of construction to further reduce sorption effects, higher pressure capability based on new measuring head designs, data acquisition software with automated humidity generator control, and multichannel thermometer data integration.
Climatic chambers are in widespread use across many industries. They are used to simulate climatic conditions including temperature, humidity, pressure, vibration and light intensity. Conditions are controlled or varied according to user or test specifications. Products and samples are placed within the controlled environment according to defined test specifications that require certain conditions to be maintained. Examples include 40 °C / 75 %rh for drug stability and 85 °C / 85 %rh for electronic component testing. Confirmation that the correct environmental conditions have been achieved is a pre-requisite for compliance with the respective standards that apply in each industry.
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