Humidity Temperature Indicators and Probes : Rotronic PS1



Indispensable to the paper professional to maintain product quality and troubleshoot problems

The PS1 is a battery operated portable indicator with an integral sword probe that measures temperature and relative humidity when inserted in a stack of paper.  Both parameters are simultaneously displayed on an easy to read LC display. The PS1 was designed with the paper and printing industries in mind. Its speed and reliability for measuring relative humidity and temperature in paper stacks is unparalleled. In contrast to the classical sword probe hygrometer, the PS1 measuring chamber is much smaller and therefore comes into equilibrium with the surrounding paper within a few minutes. This guarantees quick, reliable measurements. Our advanced technology stems from many years of collaboration with paper industry professionals. The PS1 is also used for measuring paper rolls. This is done by cutting through 3 or 4 layers of paper, over a length of 7 to 10 inches from one edge of the roll, to permit insertion of the probe.

Key Features:

  • Routinely used by hundreds of paper mills, converters, packagers, wholesalers and printers
  • Accuracy at 23 °C: ± 1.0 %RH and 0.2 °C
  • Measurement of stacks and rolls
  • Swivel probe base facilitates storage and also provides for optimum viewing angle of the LC display
  • HOLD function facilitates measurements in hard-to-reach places
  • Auto-power-off conserves battery power
  • Operates with 9V alkaline battery or with AC adapter
  • Available as a set with carrying case and calibration accessories) or as instrument alone


For Quotes, Pricing, & Availability please call our toll free number 800-878-1551 or send an email to sales@industronics.com


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