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Humidity
Loggers
YL-RH20
2 x int. sensors 
YL-RH20E 
2 x integr. in tube
YL-RH23 
3 x int. sensors 
YL-RH23E
2 x integr. in tube
YL-RH25
2 x int. & 2 x ext. 
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RH20E

The sensors for humidity and temperature are integrated in a 100mm stainless steel tube.
It can be attached to the solar radiation screen (YY-31-OM) in order to operate accurately even during rainfall and in direct sunlight.

Download Brochure HERE

YL-RH20E HumiLog with 1 external temperature and humdity sensor
Upgraded Memory Humidity Logger YL-RH20E-4M HumiLog
Temperature operating range with standard battery (CR2477N) -30...+70°C
Temperature operating range with high
temperature battery (CR2450HT)
-40...+90°C*
Internal temperature sensor measuring
range & resolution
-40...+90°C & 0.01 K
Humidity sensor (internal & external) 0..100%RH / 0,01%RH
Condensation sensor wet/dry
Dimensions d x h (mm) 50/30
Standard Memory capacity / Upgraded Memory capacity 100,000 readings / 4 million readings
Interval 1 sec to 24 hr/
or Fastmode 4, 2Hz
Enclosure Robust, shock-proof POM, protection class IP65 (dust and spray proof)
Standard lithium battery life 4 years @ 1 min. / 230 days @ 10 sec. / 25 days @ 1 sec.

Included in delivery: Data logger, 1 standard battery, Software YoyoView, USB cable, manual, declaration of conformity

* Using the logger within the extended temperature operating range requires the use of the CR2450HT battery.

TEMPERATURE ACCURACY
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ACCESSORIES
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Wall Holder Enables you to securely install the logger onto walls. Complete with tamper-evident lead seal.

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Lead seal kit For Temperatue and Humidity LoggersContains 50 pieces of wire and 50 numbered lead tamper-evident seals for single use. These are manually closed around the wire and can only be released by cutting.

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YoyoView Software In addition to the functionalities of the included basic software, the optional upgrade allows more complex analysis of data, creation of charts and calculation of data statistics.
» Three scaleable Y-axes
» Zoom function
» Cursor readings
» Display in spreadsheet format
» Combination of a series of measurements in one chart
» Definition of thresholds
» Y/T-charts (values over time)
» Statistics (min, max, and average values)
» Online metering (display actual values)

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Solar Radiation Screen Protecting the external humidity/temperature sensor from the effects of direct sunlight and rainfall when used in out-of-doors. Optimises measurement accuracy in eviromental / climatic data collection.

APPLICATIONS
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Environmental monitoring

Room temperature monitoring, water temperature survey (rivers, lakes), outside temperature, research projects involving trees, ice

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Logictics and transport

Monitoring of temperature and humidity conditions during transportation and warehousing for various goods such as frozen food, pharmaceuticals, live stock, chemicals

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Drying processes

Food processing and manufacture; paint drying processes; curing monitoring

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Storage

Storage rooms for medical, pharmaceutical products (qualification), chemical products

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Production

Humidity monitoring of seeds during production, pharmaceutical products