Model 473-SHX
The MBW CALIBRATION™ MODEL 473-SHX™ Dew Point Chilled Mirror Analyzer’s measuring head is an evolution of the tried and tested SH measuring head. It is able to operate in test conditions up to 125°C thanks to the use of optical components, electronics and materials that are able to withstand high temperatures. Our development team tested a range of components over the SHX working range to achieve the best possible performance. By comparison with our state-of-the-art MODEL 373 reference hygrometer, we were able to verify that the performance meets or exceeds the specifications. The key components of the SHX such as the optical module and fan assembly can be easily replaced by the user without the need for system re-calibration. Precise dew point measurement depends on controlled and stable gas flow over the dew point mirror and known pressure. Flow rate is especially critical at high temperature and humidity conditions. The 473-SHX measuring head incorporates a sample fan with user controllable speed that maintains a stable flow within the recommended range of 0.3…1 liter per minute at atmospheric pressure. A high temperature motor is combined with a micro engineered aluminum impeller/cowl combination to maintain reliable and stable sample flow. Flow rate can be changed through the MODEL 473 front panel user interface or by serial commands.
Measuring Ranges
Frost/Dew Point -30…+99 °C *
Relative humidity 5…99 %rh **
Temperature -50…+125 °C
Accuracy
Frost/Dew point ≤ ± 0.1 °C
Temperature ≤ ± 0.07 °C
Reproducibility
Frost/Dew point ≤ ± 0.05 °C
Temperature ≤ ± 0.03 °C
Americas +1 713.947.9591
EMEA +49 69 20436910
China/APAC +86 400 086 0106
The 473 SHX MODEL measuring head is the very latest addition to our hygrometer range. It is based on some of the very latest high-performance technologies to achieve new levels of specifications and performance.
As a stable flow through a dew point mirror measuring head is essential to achieve stable measurement, we have focused much of the development on making sure that the 473 SHX MODEL flow fan functions over the whole working range. It uses a high temperature motor and custom design fan together with digital control from the 473 MODEL base instrument. In the event of need, the flow module can be easily replaced without specialist knowledge.
In the event of damage to the 473 SHX MODEL measuring head, it is possible to order a replacement that can be fitted by your local representative or the user.
Copyright © 2022 Process Insights, Inc. All Rights Reserved.