Chilled mirror dew-point hygrometers provide highly accurate and stable measurements of trace moisture and humidity. The precision chilled-mirror reference hygrometers are sensitive to changes in very low moisture concentrations (less than 5 ppbV).
Read more...Industrial dew-point hygrometers are capable of withstanding high temperatures and hot saturated gases while still providing highly stable and accurate humidity measurements. As well as being used as reference instruments in calibration laboratories they are used for precise environmental control in research laboratories, testing automotive emissions and controlling metallurgical processes.
Chilled mirror dew-point hygrometers measure the actual formation of liquid water on a temperature-controlled surface to determine the dew-point of the sample gas. We offer a range of chilled mirror dew-point sensors optimized for specific applications that require high-temperature or humidity, trace moisture or fast-response.
The S8000 and Optidew ranges share a common HMI and operating system making it simple for operators to transition between instruments. The operating system is intuitive, and the touch screen display makes setting parameters and logging quick and easy to do.
Dew point is the temperature to which you need to cool a gas for condensation to occur. If the condensate is liquid, we call it dew point, if the condensate is solid it’s frost point.
Chilled mirrors are a fundamental method of moisture measurement.
The sample gas is passed over the mirrored surface which is constantly cooled until the optics module ‘sees’ condensation. This is achieved by shining a laser on the mirror and detecting the intensity of light reflected by the surface.
The temperature of the mirror at that point is a direct measurement of dew point.
They are used in calibration labs, environmental control for research, automotive emissions testing, and metallurgical processes.
No, none of our chilled mirrors are designed for use in hazardous areas due to heating/cooling element in the sensors.
That really depends on the application. In general, a higher risk of contamination means the mirror should be cleaned more often. A good rule of thumb is to give the mirror a quick clean every time you set up a new test.
The first troubleshooting step with chilled mirror products is to run the DCC cycle, if that doesn’t resolve the issue, we recommend cleaning the mirror following the procedure detailed in the manuals.
With the addition of a PRT to measure the sample (or environment) temperature, chilled mirrors can also measure the relative humidity. The S8000 Remote and the Optidew are supplied with an external PRT, for the other S8000’s the PRT must be purchased separately.
Annual calibration is recommended for optimal accuracy and performance.
Contact our experienced engineers to discuss your application needs.