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Temperature/Humidity Data Loggers with 2 External Inputs

Temperature/Humidity Data Logger with 2 External Inputs


Item# OMYL-RH25

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 C$785.75
5-9 C$746.46
10-24 C$730.75
25-49 C$699.32
50-99 C$683.60
100+ C$667.89

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Temperature/Humidity Data Logger with 2 External Inputs OMYL-RH25 OMYL-RH25
  • Integral Temperature/Humidity Sensors
  • Plus 2 External Inputs for Temperature (Pt100/Pt1000 RTD/Thermistor) or Temperature/Humidity Probes
  • Up to 4 Million Readings (Internal Memory Size)
  • Up to 4 Hz Sampling Rate

OMYL-RH25 Model Options

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Measurement Type
Number of Measurements
Input Type
Maximum Samples
Data Interface
Max Sampling Rate
Additional Feature

The OMYL-RH25 is a temperature/humidity data logger that also accepts two external temperature or temperature/humidity inputs. This data logger is available with standard memory of 100,000 readings (OMYL-RH25) or expanded memory of 4 million readings (OMYL-RH25-4M). The following inputs can be configured:

• Internal temperature and humidity sensors
• External temperature (Pt100/Pt1000 RTD, Type U thermistor)
• External temperature/humidity (for combined external temperature/humidity probes)

The storage medium is non-volatile flash memory so no data is lost if the battery becomes discharged. Data logger setup as well as data retrieval is accomplished using the included standard OMYL-SOFT software. Downloaded data is stored in the OMYL-SOFT software as a text file for viewing in third party software packages or Microsoft Excel. The OMYL-SOFT standard software does not include any graphing functionality. Graphing and analyzing downloaded data files requires the OMYL-SOFT-PLUS version of the software (sold separately).

Internal Temperature
    Temperature Range: -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
    Temperature Resolution: 0.01°C (0.02°F)
    Accuracy: See chart on PDF
External Temperature Input
    Sensor: Pt100 or Pt1000 RTD, U thermistor (2000Ω @ 25°C)
    Range: -70 to 250°C (-94 to 482°F)
    Resolution: 0.01°C (0.02°F)
    Accuracy: See chart on PDF
Internal/External Humidity
    Humidity Range: 0 to 100% RH
    Humidity Resolution: 0.01% RH
    Accuracy: See chart on PDF
Reading Rate: 1 second to 24 hours; 2 Hz, 4 Hz in fast mode
Start Modes: Immediate start, delayed start
Memory Capacity
    OMYL-RH25: 100,000 readings
    OMYL-RH25-4M: 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
Dimensions: 30 H x 50 mm dia (1.18 x 1.97')
Weight: 70 g (2.5 oz)
Enclosure: Robust, shock-proof POM, IP65
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