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Compact USB Temperature and Relative Humidity Data Logger

Temperature Data Logger


Item# OM-63

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 $144.29
5-9 $137.08
10-24 $134.19
25-49 $128.42
50-99 $125.53
100+ $122.65

In stock

Lead Time (If not in stock): 15 weeks
Temperature Data Logger OM-63 OM-63
  • Measure Temperature, Relative Humidity and Dew Point Simultaneously
  • Temperature and Humidity Alarm with Visual Indication on Demand
  • User Selectable Stop on Memory Full or Memory Rollover for Continuous Recording
  • PC or Push Button Recording Control

OM-63 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
Maximum Samples
Input Type
Data Interface
Max Sampling Rate

The OM-62 temperature/relative humidity data logger is an easy-to-use, versatile device which can be used for a wide range of logging applications. The OM-62 is capable of sampling as fast as once per second or as slow as every 18 hours. A total of 43,344 temperature measurements can be stored in the data logger memory if only temperature is measured, or 21,672 measurements for temperature and humidity.

In addition to measuring temperature and relative humidly, the easy-to-use Windows software included with the OM-62 data logger calculates and displays the dew point temperature. The software is a full-featured program that allows you to set up all data logger functions including sampling rate, logging duration, start mode, logging mode, and high and low temperature and relative humidity alarm values.
Once data has been logged, the program then allows you to download data from the logger, plot the data and export the data to an ASCII text or Excel file format for further analysis.

Temperature Measurement Range:

-40 to 70°C (-40 to 160°F)
Temperature Sensor: Internal digital sensor
Relative Humidity Range:
0 to 99% RH, non-condensing
Relative Humidity Sensor:
Polymer capacitive
Temperature Accuracy:
±0.5°C (±1°F)
Temperature Resolution:
±0.1°C (±0.1°F)
Relative Humidity Accuracy:
±2% RH from 10 to 90% RH
Relative Humidity Resolution: 0.01% RH
Temperature and Relative Humidity Alarms:
Programmable high and low alarm thresholds,
for both temperature and humidity
Sampling Rate: User selectable, 1 second to 18 hours,
in 1 second increments
Data Storage: 43,344 for temperature only;
21,672 for temperature and humidity
Recording Mode: User selectable; stop on memory full
or continuous recording with memory rollover
Recording Start: Push button, computer controlled,
or up to 6 week delayed start
PC Interface: USB Calibration: Single point offset calibration
available through software for both temperature and humidity
Time Accuracy: ±100 ppm @ 75°F
Power: 3.0 V lithium battery (included)
Battery Life: 6 years typical
Storage Temperature: -40 to 70°C (-40 to 160°F)
Dimensions: 76 x 40 x 15 mmD (3.0 x 1.6 x 0.6')
Compatibility: Windows XP/Vista/7 and 8 (32-bit and 64-bit)
Weight: 28 g (1 oz)
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Rated 4 out of 5 by from small size and great efficiency My experience with this instrument is short but up to date it works very well.
Date published: 2016-03-05
Rated 5 out of 5 by from OM-52 The Portable Low-cost Temp /Rel. Humidity Loggers are a little too sensitive to jarring like when the trucks have to go on bumpy roads.
Date published: 2020-04-13
Rated 1 out of 5 by from Very Slow to respond and short life span These are old technology and very slow to respond. They have to be downloaded to get data and the info is not accurate to the time it was gathered. Changes in environment may take 10 min to show up on the data loggers report and at high and low ranges may take an hour or more to respond.
Date published: 2019-04-15
Rated 4 out of 5 by from Logger Good device, intuitive SW. Good device, intuitive SW.
Date published: 2018-12-03
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We are trying to run a OM-63 Temperature Data Logger on Windows 10 and get an error 300 dialog box. We do not and will not have administrator priviledges and the interwebs have a couple indications this is the problem. How can we resolve this?

Asked by: Clayton
Hello, Disconnect the USB cable, Go to your Windows Start Menu, Click on My computer (or it may be just computer) Click on the “C” drive Click on Program Files (X86) Click on the Omega Log Folder (Maybe just Omega) Click on the USB Driver Folder Click on the executable file and run the installation (This will happen very quick you may not even notice it more than just a flash) Close everything out Plug the USB cable back in Wait a minute or so to let the driver fully load, Launch the software and try to communicate.
Answered by: cwengineer3
Date published: 2021-10-08

Is this device capable of measuring in 0.1’C increments?

Asked by: Cathie
Yes, it is capable. We also offer the new OM-HL-SH series with more features.
Answered by: Jane
Date published: 2019-01-09

Hello. I am wondering if this device would be suitable to monitor the temperature in a vaccine storage unit. What I want to know is if the refrigerator goes outside of 2'-8' C, will I be able to accurately determine for how long it was out of range?

Asked by: Cathie
Please note if you want to record the data, then OM-63 is ideal. However, If they want an alarm to tell you when your unit went out of range without accessing the data, then this is not the unit for them. What they really need in that case is the OM-THA2. The OM-THA2 with both provide an alarm AND record the data.
Answered by: Jane
Date published: 2019-01-30

What is the accuracy when it is greater than 90% relative humidity?

Asked by: metrologist
Thank you for your question. There is no accuracy specification outside of the range of 10- 90 % Rh.
Answered by: PVLENGR
Date published: 2024-05-06

I have OM-62 and I'm on Windows 10 I have tried with several software to make it works. Can somebody send me the right one for this device. Regards.

Asked by: Abel
Hello, the Software link is listed under the 'Product Specs' on the OM-62 Product Page. Please call our Tech Support to help troubleshoot and get you up and running. 1-888-826-6342 | 1-203-359-1660 (US & Canada).
Answered by: Jane
Date published: 2019-10-03

Can OM-62 units be purchased with, or do they come with calibration certs?

Asked by: Fritzy
Thank you for your question. We provide a Cal-1 ( certificate of conformance).
Answered by: Application Engineer PV
Date published: 2022-10-11
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