MHK ISDB/Instruments/OMEGA OMYL-RH23 Series Data Logger

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OMEGA OMYL-RH23 Series Data Logger

Manufacturer: Not Provided
Measurement Category: Meteorological, Condition Monitoring
Operating Environment: Dry Enclosed Space
Version(s): OMYL-RH23/OMYL-RH23-4M: Internal temperature, humidity and pressure sensors
OMYL-RH23E/OMYL-RH23E-4M: Internal pressure sensor with temperature and humidity sensors fitted in integral probe

Communication Protocol: Internal Logging
Operating Mode: Stand Alone
Power Supply Type: Battery
Power Specification: 3V lithium battery; user replaceable; optional high temperature range battery available


The OMYL-RH23 and OMYL-RH23E are robust devices capable of logging temperature, humidity and barometric pressure readings and are software configurable to record either all three of these parameters or just individual variables. These data loggers are available with standard memory of 100,000 readings or expanded memory of 4 million readings. The storage medium is non-volatile flash memory so no data is lost if the battery becomes discharged.

Instrument Measurements

  • Barometric Pressure (Air)
  • Relative Humidity (Air)
  • Temperature (Air)
  • Relative Humidity (Internal Environment)
  • Temperature (Internal Environment)
  • Fluid Presence (Internal Environment)

Measurement Specifications
Temperature Range: -30 to 70°C (-22 to 158°F) with standard lithium battery (included); Resolution: 0.01°C (0.02°F)
Humidity Range: 0 to 100 %RH Resolution: 0.01 %RH
Barometric Pressure Range: 10 to 1100 hPa Resolution: 0.1 hPa Absolute Accuracy @25°C: ±1.5 hPa Relative Accuracy @25°C: ±0.5 hPa

Optional Sensors

No optional sensors provided. Please add sensors.

Guides and Manuals

Product Web Page:

Notes, Considerations & Recommendations

No notes have been provided. If you have worked with this instrument, please contribute your notes.

User Experience

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