Sensors

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Sensors

Rotronic's in-house produced humidity sensor elements are the centerpiece of our humidity and temperature probes. Manufactured with Swiss precision in a protected, clean environment, the humidity sensor elements guarantee the highest accuracy and long-term stability of the legendary Rotronic humidity and temperature sensors, from the standard humidity sensor to the meteo sensor and the special sensor for harsh, industrial applications. Special humidity sensor elements are also used in probes for water activity measurement or in humidity and temperature probes for measurements in challenging sterilization environments where chemicals such as hydrogen peroxide are used.

 

Rotronic offer the following humidity sensors:

 

HygroMer HT-1 High-Temperature - relative humidity sensor

HygroMer IN-1 Industrial-Temperature - relative humidity sensor

HygroMer WA-1 Water-Activity - relative humidity sensor

HygroMer HM1-SK Meteo & Outdoor - relative humidity sensor

HygroMer HH1-SK Hydrogen Peroxide - relative humidity sensor

 

 

Rotronic offer the following temperature sensors:

 

PT100 Platinum Temperature - temperature sensor

 

 

As a world-leading manufacturer of humidity measurement instruments, Rotronic is fully aware of its responsibility to offer instruments that can withstand the harshest operating conditions, while remaining user-friendly and requiring minimal maintenance. At the same time we urge our users to ensure continued performance within specification of the measurement instruments at the expense of a small amount of effort. The following checklist is provided as a guide:

  

 

1. Analyze the environment in which the humidity probe is used. What suspended substances and/or chemicals (Contamination/Pollutants)  exist and in approximately what concentration?

 

2. Install the probe at a place representative of the measured climate with good airflow across the sensor.

 

3. Choose the right filter. Measurement is fastest without a filter. For air velocities higher than 3 m/s, however, a filter must be used. The filter protects the sensor up to airflow velocities of 40 m/s,  

   depending on the filter type used. Suitable filters must also be used in the case of contaminants/pollutants and in harsh environmental conditions.

 

4. Install the probe correctly to suit the application.

 

5. Inspect and replace the filter more frequently in harsh operating conditions. Filters can be cleaned in an ultrasonic bath. However, always keep a new filter in stock.

 

6. Check the measurement probe is working correctly by performing a calibration at least every 6 to 12 months.

 

7. For calibrations, use one of our calibration services or the SCS-certified humidity standards. This will ensure your calibration is traceable to national standards, as a minimum.