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4-Channel Handheld Data Logger Thermometer

  • RoHS Icon
  • CE Approved
  • UKCA


Item# HH374

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 $420.61
5-9 $399.58
10-24 $391.17
25-49 $374.34
50-99 $365.93
100+ $357.52

In stock

Lead Time (If not in stock): 6 weeks
4-Channel Handheld Data Logger Thermometer HH374 HH374
  • Auto Range
  • USB Interface with Windows® Software
  • LED Back Light
  • HOLD Function

HH374 Model Options

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Measurement Type
Input Type
Maximum Samples
Data Interface
Additional Feature

The HH374 has a high resolution and fast analog to digital converter. Measurements settings and results are shown on the backlit LCD display. Data can be stored in the meter or directly saved on a computer through PC interface. Recorded data can be further processed on a computer. With the exclusive software, recording/recalling of data and programming of logging parameters can be done directly through a PC.

Measurement Range: -200 to 1370°C (-328 to 2498°F)
Accuracy: -200 to 1370°C (-328 to 2498°F) ±0.1% rdg + 0.7°C (±0.1% rdg + 1.4°F)
Input Protection: 60V DC or 24 Vrms AC Max
Battery Type: 9V battery (included)
Operating Condition: 0 to 50°C (32 to 122°F) (<80% RH)
Storage Condition: -20 to 60°C (-4 to 140°F) (<70% RH)
System Required: Windows NT 4.0/NT2000/XP/Vista/ Windows 7
Dimensions: 196 H x 65 W x 36 mm D (7.72 x 2.56 x 1.42')
Approx Weight: 285 g (10.05 oz)

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Rated 5 out of 5 by from Great portable tuning instrument!!! I purchased the HH374 about 3 months ago to as a tuning aid for my UTV/ATV DYNO and has been one of the best tuning tools I have ever purchased.
Date published: 2016-11-09
Rated 3 out of 5 by from Not as accurate as the old HH506RA I compared with HH506RA with same probes in ice bath and boiling water. Set offset to compensate for bias error, but HH374 still had a 1C error at the other end of the scale. No way to compensate for that. Design is really nice. UI is easier than the HH506RA's. However, the binary serial interface of the HH374 can lock up. In this case, there's no recovery except to power cycle the HH374, which means unattended operation is not possible. Also, very sensitive to power supply. Readings shifted by >1C when run on the AC adapter.
Date published: 2020-08-14
Rated 4 out of 5 by from Thermometer REview This is a great and versatile thermometer. My unit came with cheap non Omega temperature probes. The last one I purchased had the probes pictured in the advertising. I prefer the probes that are pictured with the thermometer because they can be easily stored by winding the cords onto their built in spool. PC interface works good. My unit came with a 2 moth old calibration certificate. I would buy again.
Date published: 2020-04-25
Rated 3 out of 5 by from Good product Purchased the unit several years ago and it still works great. However, I lost the software and have been requesting a new copy, or information on how to get a new copy, to no avail.
Date published: 2019-04-01
Rated 3 out of 5 by from Nice functions, but some issues In using the HH374 we found that the unit can be impacted by radiated noise for other systems in close proximity to the unit. Built a small shield, grounded it, and made sure not to touch in order to get stable information/data.
Date published: 2018-10-07
Rated 5 out of 5 by from Reliable, great battery life, stellar accuracy! reliable, great battery life, stellar accuracy!!!!
Date published: 2016-07-14
Rated 5 out of 5 by from Amazing Unit! Excellent product. and the shipping time was ahead of scheduled time. I love Omega products and their customer service is outstanding.
Date published: 2022-09-20
Rated 5 out of 5 by from works great works great i haven't tried the logging feature yet
Date published: 2020-04-17
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I am looking for 4 channel temperature data logger for verifying the temperature of our lab dry oven. Does HH374 can be used for this kind of purpose? Thanks in advance

Asked by: QC Lab
Is this logger appropriate to verify the temperature of vacuum ovens too? Thanks
Answered by: Alessandra
Date published: 2021-09-23

I am trying to disable the auto power off mode. I went trough the manual procedures on holding the Hold button down before turning on the unit. There is no Auto Power Off symbol that appears on the screen. How do I make sure the unit does not power down?

Asked by: BtngFn1999
The symbol that appears when you power up the meter normally will not be there if auto power off is correctly activated. You cannot activated auto power off if you are connected to a PC or in data log mode.
Answered by: ApplicationsEngineerANB
Date published: 2023-04-24


Asked by: JEFFD
Thank you for your inquiry. Please see link for HH300-ADAPTER:
Answered by: Application Engineer CB
Date published: 2023-03-04

Is the software compatible with Windows 7? We have older machines that can't be upgraded to newer Windows versions.

Asked by: Uncle Bob
The Software available on Omega's FTP site is compatible with OS7 and can be accessed at using Explorer or Firefox browsers.
Answered by: ApplicationsEngineerANB
Date published: 2021-12-08

I am looking to use this data logger through an oven door which means the thermocouple could be pinched in the closed door. Will this be a problem or can the thermocouples withstand the bending within the closed oven door?

Asked by: cmil
Thank you for your inquiry. Most thermocouple wire can bend and still function in a closed door.
Answered by: Engineer CB
Date published: 2020-05-27

Does this thermometer comes with calibration certificate?

Asked by: NipunS
Hi NipunS Thank you for the inquiry. This product does not include calibration certificate. Best regards OMEGA
Answered by: NorwalkAE_RS
Date published: 2022-05-31

Hi, I have a HH374 Data Logger connected via USB. When I start the real-time sampling I got an error message: INVALID FLOATING POINT OPERATION. The Real-time set up is: 2000 data, sampling rate 10s, recording period 5:33:20 How could be fixed?

Asked by: JADA
Thank you for connecting with Omega. Please download the latest software update below.
Answered by: Jane
Date published: 2019-04-24

For my application, I plan to connect the data logger to my laptop and let it sit for days to collect the data. If the laptop goes to sleep, does the software on the computer and data loggers keep logging the data?

Asked by: jacob88
Hi Jacob88, Thank you for the inquiry. This would be the real time mode of logging to PC. Logging would be interrupted on occurrence of PC sleep mode. Best regards, OMEGA
Answered by: NorwalkAE_RS
Date published: 2022-11-11
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