Model RTH Temperature & Humidity Recorders
• Temperature and/or humidity recording at low cost
• Simple installation & maintenance
• Uses proven bimetallic coil and hygroscopic membrane
The RTH100 Series of temperature and humidity circular chart recorders uses the proven design combination of bimetallic coils and hygroscopic membrane for the direct measurement of temperature and humidity.
Changes in atmospheric temperature and humidity are detected by the two elements within the recorder. The bimetallic coil monitoring the temperature and hygroscopic membrane monitoring the humidity.
Air is drawn through the instrument and over the two sensing elements by an electrically driven fan. Expansion or contraction of the bimetallic coil, due to temperature change, causes the pen movement by direct linkage. Similarly a change in humidity causes extension, or contraction, of the hygroscopic membrane and direct linkage again causes movement of the second pen.
Please note that control options are no longer offered
Related Links
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..........................................>> Sentinel Chart Recorders
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Control options shown are no longer offered