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Portable Temperature/Humidity Data Loggers with Display

$170.00

Item# OM-71

 This item is available for quick shipping
Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 $170.00
10-24 $161.50
25-49 $158.10
50-99 $151.30
100-199 $147.90
200+ $144.50

In stock

Lead Time ( If not in Stock): 2 weeks

Portable Temperature/Humidity Data Loggers with Display OM-71 OM-71
Portable Temperature/Humidity Data Loggers with Display is rated 4.0 out of 5 by 5.
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  • Compact, Light Weight, Easy-to-Use
  • User Selectable Stop on Memory Full or Memory Rollover for Continuous Recording
  • PC Delayed Start or Pushbutton Recording Control
  • Read Recorded Data on Logger Display
  • Displays Alarm Icon for High/Low Alarm Conditions
  • Nonvolatile EEPROM Memory Retains Data Even if Battery Fails
  • USB Interface for Fast Data Transfer
  • Includes Free Software

Product info

Measurement Type
Temperature
Number of Measurements
1
Input Type
Internal
Maximum Samples
~45K
Display
LCD
Power
Battery
Data Interface
USB
Max Sampling Rate
1 sec
Additional Feature
Not Applicable

Product Specs

  • Alarm Over/under alarm with visual indication
  • Display Type LCD
  • Configurable Parameters Start on button press
  • Maximum Storage Temperature 80°C (175°F)
  • Maximum Ambient Temperature 55°C (131°F)
  • Minimum Ambient Temperature -18°C (0°F)
  • Minimum Storage Temperature 30°C (-20°F)

Please check out Newest Released Temperature and Humidity Portable Data Logger with LCD Display OM-HL-SH Series for more advanced features with excellent user experience.

The OM-70 Series of portable temperature and temperature/humidity data loggers are easy-to use, versatile devices which can be used for a wide range of logging applications including coolers, freezers, greenhouses, museums, laboratories, shipping containers, warehouses, environmental monitoring and food storage.

These data loggers are capable of sampling as fast as once per second or as slow as every 18 hours. Models OM-71 and OM-72 can store a total of 43,344 temperature measurements in memory. Model OM-73 can store a total of 43,344 measurement points for temperature only or 21,672 points of temperature, humidity and dew point. The model OM-74 thermocouple data logger can store 32,638 temperature samples. Easy-to-use Windows software is included with each data logger.

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 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.

Software Features Include:
• Data summary to read statistics and alarm information in a simplified report format.
• Data listing for tabular view of detailed dates, times and values of recorded data.
• Graph function displays data in clear graphical format.
• Zoom magnifies data with powerful zoom and autoscale functions.
• Autoscale function fits data to the screen or allows user to manually enter their own values.
• Graphical Cursor displays exact data of any point in the graphical display.
• Export data in text or Excel format.
• Print graph or text data with print preview and setup options.
• Logger configuration allows easy set up and launch of data loggers with immediate or delayed start, preferred sample rate, alarm setup, and custom ID.
• Password protected calibration function automatically stores with parameters in device or restores factory defaults. A calibration Window is provided in the software to simplify the calibration procedure.
• Status windows display unique ID of logger, battery voltage, memory used, sample rate, duration, alarm condition and logging status.
• Menu Bar along the top of the screen provides one click access to software functions.

Specifications
OM-71, OM-72, OM-73
Ambient Temperature Measurement Range
(Models OM-71, OM-73):
-20 to 70°C (-4 to 160°F)
External Sensor Temperature Measurement Range
(Model OM-72):
-40 to 70°C (-40 to 160°F)
Storage Temperature: -40 to 77°C (-40 to 170°F)
Temperature Accuracy: ±0.5°C (±1°F), from -17 to 50°C (1 to 122°F)
Temperature Resolution: 0.1°C (0.05°F)
Relative Humidity Range
(Model OM-73):
0 to 99% RH non-condensing
Relative Humidity Accuracy
(Model OM-73):
±2% RH from 10 to 90% RH @ 25°C (77°F)
Relative Humidity Resolution
(Model OM-73):
0.05% RH

OM-74
Display Temperature Resolution:
0.1°C (0.2°F) up to 199.9 °C or °F,
1°C (1°F) above 200 °C or °F
Logged Temperature Resolution: 0.1°C (0.2°F)
Thermocouple Impedance: 50 ? max for specified accuracy
Cold Junction Temperature Accuracy: ± 0.3°C (±0.5°F)
Operating Temperature: -18 to 55°C (0 to 131°F)
Storage Temperature:-30 to 80°C (-20 to 175°F)

GENERAL
Sample Rate:
1 second to 18 hours user selectable
Alarm Settings: Over/under alarm with visual indication
LCD Display: Displays temperature, date, time,
alarm condition recording status and battery condition
Time Accuracy: ±100 ppm @ 24°C (75°F)
Measurement Capacity: OM-71, OM-72, OM-73:
Non-volatile memory; 43,344 samples
for temperature only, or 21,672 samples for temperature,
humidity and dew point (Model OM-73); OM-74; 32,638 temperature samples
Recording Control: Start on button press, immediate after setup,
or at a user specified date and time
Recording Mode: Stop on memory full,
or continuous recording with memory rollover
Minimum System Requirements: 8MB of RAM, 2MB of disk space,
800 x 600 resolution, 1 free USB port
Software Compatibility: Windows XP/Vista/7 and 8 (32-bit and 64-bit)
Interface: USB 2.0
Power: OM-71, OM-72, OM-73: 3 V CR2032 lithium battery (included);
OM-74; 3 AAA batteries (alkaline or lithium)
Battery Life: 3 years (average)
Dimensions:
OM-71, OM-72, OM-73: 6 H x 5.7 W x 1.3 cm D (2.36 x 2.24 x 0.51')
OM-74: 5.7 H x 5.5 W x 3.0 cm D (2.25 x 2.15 x 1.2')
Weight:
OM-71, OM-72, OM-73:
91 g (3.2 oz)
OM-74: 62 g (2.2 oz)

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 4 out of 5 by from Hi temp data logger The unit works as very well. Only issue is the directions. they are all online and incomplete so it is trial and error until you figure out how to operate to unit.
Date published: 2018-01-17
Rated 4 out of 5 by from Excellent applicability For price and accuracy both effectively combined in this products.
Date published: 2015-12-16
Rated 4 out of 5 by from Good value for a stand alone data logger I have bought these many times over the years and appreciate the updates to the user interface. The data loggers are very robust and accurate. I would give this a 5 star review if there was a version of the software that would also calculate Heat Index as part of the standard data output. Very useful for safety studies.
Date published: 2019-07-11
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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What wireless receiver will work with the MWTC-D-J-915? For some reason I thought the receiver would come with it.

Asked by: Wells
Hello Wells, receiver is sold separately. You can take a look at the MWTC-REC1-915 or MWTC-REC5-915 for your consideration: https://www.omega.com/en-us/control-and-monitoring-devices/wireless-monitoring-devices/wireless-receivers/p/MWTC-REC1-915 https://www.omega.com/en-us/control-and-monitoring-devices/wireless-monitoring-devices/wireless-receivers/p/MWTC-REC5-915
Answered by: DA Engineer
Date published: 2019-10-11

Would this device be compatible with any type of probe . we are currently loooking for a device to measure compost temperature and humidity via some kind of probe. Thank you !

Asked by: Marc Andre Lauzon
Hello Marc As long as it is one of the following thermocouple types: J, K, T, E, R, S, B, C or N Also the probe will need either a standard round prong or mini blade type connector attached at the end so it can connect to the transmitter.
Answered by: JA Engineer
Date published: 2019-08-28

What are the physical dimensions of the unit (length)? I would need to add the length of the thermocouple plug to find the overall length of the assembly. I need to verify if it will fit in our enclosure.

Asked by: ScottG
Hello Scott The dimensions of the device are 82.5 L x 25.4 W x 15.2 H mm (3.25 x 1 x 0.6") A mini-thermocouple connector's dimensions when connected to the transmitter are 20.6 (0.81") by 7.9 (0.31") and the width being 16.8 (0.66)
Answered by: JA Engineer
Date published: 2019-08-28

Dear Sir, We are interesting to purchase the product but we need some clarifications for this products, If the equipment is 24/7 working (Recorded) or only particular time working (Auto power off without disturbing the equipment? please advice.

Asked by: Urjita Electronics
When you are setting up the logger you can select either to stop on Memory Full or Memory Rollover for Continuous Recording. Thank you.
Answered by: Application Engineer
Date published: 2019-07-22

I have the HH-309A temp mapping tool, it was working while I was running on windows 7 but not that I am running windows 10 the tool no longer shows a connection to the computer. Is there another program that I need to download?

Asked by: Scott White
Scott, The problem is the driver. Not the program. I have the HH-309A as well and the communication to the unit stopped working with Windows 10. Luckily Windows 10 identifies my USB to serial cable (labeled USB-300 by Omega) as: - CP2102 USB to UART serial connection. But the provided driver by Microsoft did not work... nor the original driver by Omega. I found the Silicon Labs CP210x driver to USB connection in this site: https://www.pololu.com/docs/0J7/all#2 I installed the X64 bit version of it and it now shows in the Windows Device Manager under Port (COM & LPT) as: Silicon Labs CP210x USB to UART Bridge (COM1) I re-installed the SE309 Software from the original mini-CD disk that came with the HH-309A unit and everything is now working perfect. Home this helped. Adrian Crisci
Answered by: AEC007
Date published: 2019-07-19

Is this data logger completely portable? Meaning, when used in an autoclave, does it require a connection to a computer? Or does it simply get removed from the autoclave and downloaded onto a computer following completion of a cycle?

Asked by: Kaitlyn
Hi, thanks for connecting with Omega. The OM-CP-HITEMP140 logger series requires a docking station OM-CP-IFC400 (sold separately) to interface with the computer. You would use the computer only for set up and to download data. After removing your logger from the autoclave, please allow it to cool down and clean it with a dry cloth before placing it in the docking station. This is really important as the docking station is not designed to withstand the autoclave operating conditions.
Answered by: Jane
Date published: 2019-05-31

I use Linux, not Windows. A few Qs: 1. What is the default setting for sampling rate? 2. Will the device appear as a storage device if plugged into a Linux kernel? 3. If yes to 2., will the .txt data file appear on the device? Thx

Asked by: Cam W
Thanks for your questions. Unfortunately, the OM-141 (or the OM-HL-SP) will not support Linux since both logger’s software is designed for Windows. However, we can recommend the product OM-HL-SP, the max logging rate is 1 sec and the default is set to 60 secs. Please contact us anytime with further questions.
Answered by: Jane
Date published: 2019-05-15

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: 2019-04-29
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