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Product Groups
Temperature- Humidity and Barometric Pressure Data Loggers
TRODEKS Engineering | Thermocouples, Pressure Transducers, Flow Meters, PID Controllers
  • Integral Temperature/Humidity/Pressure Sensors
  • OMYL-RH23 Has Internal Temperature/Humidity/Pressure Sensors
  • OMYL-RH23E Has Internal Pressure Sensor with Temperature/Humidity Sensors Fitted in Integral Probe
  • Up to 4 Million Readings (Internal Memory Size)
  • Up to 4 Hz Sampling Rate
  • High Accuracy
  • 20 Bit A/D Converter
  • Shock Proof, IP65 Housing (Dust and Water Jet Proof)
  • Transfer Rate of 500 kbps
  • Low Current Consumption
  • Up to 4 Years Battery Life
 Manuals (contact with email : [email protected])


The OMYL-RH23 and OMYL-RH23E are robustdevices capable of logging temperature, humidityand barometric pressure readings and are softwareconfigurable to record either all three of theseparameters or just individual variables. These dataloggers are available with standard memory of100,000 readings (OMYL-RH23, OMYL-RH23E) orexpanded memory of 4 million readings(OMYL-RH23-4M, OMYL-RH23E-4M). TheOMYL-RH23/OMYL-RH23-4M have built-in sensorsfor temperature, humidity and barometric pressure.The OMYL-RH23E/OMYL-RH23E-4M have aninternal pressure sensor with the temperature/humidity sensors fitted in an integral 100 mm (3.94")steel probe. These data loggers are suited for avariety of applications including environmental orclimate studies, meteorological research and also inclean rooms and laboratories.

The storage medium is non-volatile flash memoryso no data is lost if the battery becomes discharged.Data logger setup as well as data retrieval isaccomplished using the included standardOMYL-SOFT software. Downloaded data isstored in the OMYL-SOFT software as a textfile for viewing in third party software packagesor Microsoft Excel. The OMYL-SOFT standardsoftware does not include any graphing functionality.Graphing and analyzing downloaded data filesrequires the OMYL-SOFT-PLUS version of thesoftware (sold separately).

Sensor Type
    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
Temperature Range: -30 to 70°C (-22 to 158°F) with standard lithium battery (included); -40 to 90°C (-40 to 194°F) with optional high temperature lithium battery
Resolution: 0.01°C (0.02°F)
Accuracy: See chart on PDF
    Range: 0 to 100 %RH
    Resolution: 0.01 %RH
    Accuracy See chart on PDF
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
Reading Rate: 1 second to 24 hours; 2 Hz, 4 Hz in fast mode
Start Modes: Immediate start, delayed start
Memory Capacity
    OMYL-RH23, OMYL-RH23E: 100,000 readings
    OMYL-RH23-4M, OMYL-RH23E-4M: 4 million readings
Memory Wrap Around: Yes (software configurable)
Battery: 3V lithium battery [standard temperature range battery (included) optional high temperature range battery]; user replaceable
Battery Life (Standard Temperature Range Battery): 4 years at 1 minute reading rate, 230 days at 10 second reading rate, 25 days at 1 second reading rate
LED Functionality: Integrated status LED indicates data logging status, low battery or alarm condition
Alarms: Software programmable high/low thresholds
Computer Interface: USB (interface cable included)
Software: XP SP3/Vista/7 and 8 (32- and 64-bit)
Operating Environment: -30 to 70°C (-22 to 158°F) with standard lithium battery; -40 to 90°C (-40 to 194°F) with optional high temperature lithium battery
    OMYL-RH23, OMYL-RH23-4M: 30 H x 50 dia mm (1.18 x 1.97")
    OMYL-RH23E, OMYL-RH23E-4M: 30 H x 50 dia mm (1.18 x 1.97") with 100 L x 8 dia mm probe (3.94 x 0.31")
Weight: 70 g (2.5 oz)
Enclosure: Robust, shock-proof POM, IP65
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