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Call us at 1-888-826-6342.

Multi-Use PDF Temperature and Humidity Data Loggers


Item# OM-24

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 C$173.90
5-9 C$165.21
10-24 C$161.73
25-49 C$154.77
50-99 C$151.29
100+ C$147.82

In stock

Lead Time (If not in stock): 15 weeks
Multi-Use PDF Temperature and Humidity Data Loggers OM-24 OM-24
  • Plug-and-Play Multi-Use Temperature Data Logger with USB 2.0 Interface
  • Accurate Thermistor Temperature Sensor
  • No Special Software or Driver Required for Programming and Download
  • Configuration Utility and Calibration Certificate Stored in the Data Logger
  • Generate a PDF and Excel® Report on Completion of Data Logging
  • PDF Report Contains Summary, Graph and Detailed Data List
  • LCD Display
  • Dual Color Status LED
  • Start/Stop Logging via Single Button Press
  • MIN/MAX Function
  • EN 12830 Compliance

OM-24 Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

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


The OM-22, OM-23 and OM-24 are multiple use temperature and humidity data loggers that are ideal for a wide range of test and measurement, quality control, and environmental monitoring applications. They conveniently generate a PDF and Excel report on completion of data logging. The OM-22 measures ambient temperature using an internal thermistor temperature sensor. The OM-23 measures ambient temperature and also accepts an external thermistor temperature probe as input. Model OM-24 measures ambient temperature and relative humidity. These data loggers are completely user-programmable including language selection, sampling interval, start delay, alarm delay, temperature units, alarm range, alarm type, password and user name. No special software or driver is required for setup or download of data. The data logger appears as a mass storage device when connected to the PC. The user manual, a calibration certificate and data logger configuration utility are all stored in the data logger.

To setup the data logger simply plug it into a USB port on your computer and run the on-board configuration utility. Once configuration is complete the data logger can be removed from the PC’s USB port. On completion of data logging re-connect the data logger to the computer and open the configuration utility. Choose the function convert to PDF or convert to Excel and select the desired location on your computer to store the reports. The PDF report contains the data summary, graph and tabular results. The Excel report contains all of the information in the PDF report except for the graph.
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Rated 5 out of 5 by from Simple, efficient and effective datalogger Dataloggers were just what I needed to provide ongoing monitoring of production and storage rooms. The visual display is a bonus. The built in software is perfect for setting up parameters and the printout macros are simple and effective. Also like the fact that the certification information for each unit appears in the report printouts.
Date published: 2021-10-17
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Does this unit allow for annual calibration? Or is it only calibrated initially?

Asked by: CG_1820
Thank you for your question. You must e-mail our Customer Service Dept at CSERVICE@OMEGA.COM and they will be able to assist you.
Answered by: Application Engineer PV
Date published: 2022-08-08

Is there an audible alarm on this unit or just a flashing LED?

Asked by: AGCCVC
Thank you for your question. The unit has no audible alarm.
Answered by: Application Engineer PV
Date published: 2022-04-01

How can I check whether the data logger time synced correctly with the laptop? After configuring the set up/ mapping, I found that the time of some data loggers was faster than the laptop's time.

Asked by: Actual time sync
Thank you for your question. We will require more information to help on this question, please email the DAS team at DAS@OMEGA.COM”
Answered by: Application Engineer PV
Date published: 2022-01-24

for what time period (how long) can I measure the humidity in a room?

Asked by: David King
The manual states that it can sample up to 24000 data points. At rates of: Sampling interval 30 seconds, 5, 10, 30, 60, 90, 120 minutes. So at 30 second interval: 200 hours (8.3 days), at 120 minute interval: 2000 days. Note however battery life is 3 months. It is not clear if the unit is connected to a USB power source if it will function without the internal batteries.
Answered by: Greg9504
Date published: 2019-04-27

We are interested in purchasing a data logger. This would be suitable to read packages shipped with dry ice? Thank you

Asked by: Tish
As long as units min temp does not exceed -30°C (-22°F). The display will not work at is temp range only above 0 deg c. The OM-CP-CRYO-TEMP is better suited for this application. https://www.omega.com/en-us/control-and-monitoring-devices/data-loggers/om-cp-cryo-temp-series/p/OM-CP-CRYO-TEMP?searchterm=OM-CP-CRYO
Answered by: Raptor
Date published: 2020-06-09

With what operation system works? Windows only, IOS, Chrome?

Asked by: Marius
Thank you for your question. Windows operating system only.
Answered by: Application Engineer PV
Date published: 2022-02-07

Does this calculate MKT? Included on the report?

Asked by: Raj007
Thank you for your question. It does calculate MKT. Please download Data sheet from page. https://www.omega.com/en-us/temperature-measurement/temperature-and-humidity-data-loggers/om-22-series/p/OM-22
Answered by: Raptor
Date published: 2021-01-29

Can the USB port be connected with a cord or does it have to be directly plugged into a computer?

Asked by: Stapse
Thank you for your question. The logger has to be directly plugged into PC usb port in order to work properly.
Answered by: Raptor
Date published: 2020-07-17
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