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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 $407.57
5-9 $387.19
10-24 $379.04
25-49 $362.74
50-99 $354.59
100+ $346.43

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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Does this come with 4 k-type thermocouples?

Asked by: b_mag
Thank you for your inquiry. The HH374 comes with only 2 K Type Bead Probes.
Answered by: Application Engineer SP
Date published: 2023-04-25

Does the unit come with a certificate of calibration? Does the software work with Window 10 Enterprise?

Asked by: Joey4444
The HH374 comes with a NIST certification but no points and software version V45 is Windows 10 compatible which should be fine for Enterprise.
Answered by: ApplicationsEngineerANB
Date published: 2022-03-07

What is the part number for the custom designed USB cable for SE374 software? Is that the AC adapter referenced above?

Asked by: kmk842
The USB cable is included with the original purchase of the meter and is for data transfer only. The AC adaptor is included too and this is for powering the meter bypassing the batteries. Each are not sold as accessories and need to be requested as spare parts with Customer Service at
Answered by: ApplicationsEngineerANB
Date published: 2021-08-05

What kind of thermocouple connector I can use with these reader? Can I use :

Asked by: LuisP
Thank you for your inquiry LuisP. Any K type thermocouple with a miniature connector should work with this unit. No you cannot use the KQXL-M30G-300 thermocouple with this unit since it has a standard connector.
Answered by: Application Engineer SP
Date published: 2021-10-11

Lately maybe due to updated windows 10 software, I really don't understand why, I'm not able to connect with my computer and use with the SE374 software. I've updated the software and rebooted with no luck. help!!

Asked by: LabTech
Thank you for your inquiry. Please contact our Temperature Group for assistance at
Answered by: Application Engineer JB
Date published: 2020-03-13

What are the AC adapter jack dimensions?

Asked by: Jane15
Thank you for your inquiry Jane15. This is just a standard AC adapter used on a regular basis. If you need the dimensions of this adapter, please email us at
Answered by: Application Engineer SP
Date published: 2021-10-11

What is the part number for the matching AC adapter for this logger?

Asked by: jjo2
Thank you for your inquiry! The part number for the AC adapter is HH300-ADAPTER
Answered by: Application Engineer JM
Date published: 2021-04-15
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