Skip to search Skip to main content Skip to navigation

Call us at 1-888-826-6342

We noticed you are from . Visit your local site for regional offers and live support.

4-Channel Handheld Data Logger Thermometer


Item# HH378

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 C$633.29
5-9 C$601.63
10-24 C$588.96
25-49 C$563.63
50-99 C$550.96
100+ C$538.30

In stock

Lead Time (If not in stock): 6 weeks
4-Channel Handheld Data Logger Thermometer HH378 HH378
  • Auto Range
  • USB Interface with Windows® Software
  • LED Back Light
  • HOLD Function

HH378 Model Options

View all models

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
Input Type
Maximum Samples
Data Interface
Additional Feature

HH378 logger is in the end of its life cycle. As a possible substitute & upgrade, please check out Newest Released 8 Channel Thermocouple Data Logger OM-HL-EH-TC Series for more advanced features with better price.

The HH378 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:
    K: -200 to 1372°C (-328 to 2501°F)
    J: -150 to 1000°C (-238 to 1832°F)
    E: -150 to 750°C (-238 to 1382°F)
    T: -180 to 400°C (-292 to 752°F)
Input Protection: 250 Vac
Resolution: 0.1°C/°F <1000, 1°C/°F =1000
Accuracy: ±(0.1% of reading + 0.7°C) ±(0.1% of reading + 1.4°F)
    Below -100°C (-148°F): ±(0.4% of reading +0.7°C) ±(0.4% of reading +1.4°F)
Temperature Coefficient: 0.01% of reading + 0.05°C per °C (<18°C or >28°C)
Sample Rate: 1 time per second
Battery Type: 9V battery (included)
Battery Lifetime: Approximately 30 hours (alkaline battery)
AC Adaptor: 9 Vdc (8 to 10 Vdc maximum)
Operating Temperature: -10 to 50°C (14 to 122°F)
Operating Humidity: 10 to 90% RH (no condensing)
Storage Temperature: -40 to 60°C (-40 to 140°F)
Storage Humidity: 10 to 75% RH
Dimensions: 196 H x 65 W x 36 mm D (7.72 x 2.56 x 1.42')
Approximate Weight: 310 g (10.93 oz)
System Required: Windows NT 4.0/ NT2000/XP/Vista/Windows 7
loading all models
loading all reviews
Rated 3 out of 5 by from It works but need instructions, battery life This thermometer works good as far as recording the data and transferring them to the graphs. However, installation instructions in the manual are not very helpful. I have to download the driver for the USB from the manufacturer website. It also drained the battery very quickly in less than 24 hours, which is not good for long process.
Date published: 2019-01-03
Rated 5 out of 5 by from Recommended purchase, easy to use. Works as expected, user friendly. Second one to date that we have purchased. Accurate and reliable.
Date published: 2024-01-08
Rated 5 out of 5 by from Another great product from Omega. Very versatile temp logger that comes with everything you need to get started: battery, computer cable, temp probes and case. Easy to set up and use.
Date published: 2023-08-21
Rated 3 out of 5 by from Bad and good We bought two of this items before. The first one was perfect, but the second one had some issue. Saved data in the machine had glitchier every a couple of hours which caused some trouble when we transferred data later. Even so, the item is really convenient. If this one can be bundled with DC power supply (or at least has a link related), it will much easier. We bought another two recently, hope these two do not have issue.
Date published: 2021-06-30
  • y_2024, m_4, d_13, h_5
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.41
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_4
  • loc_en_CA, sid_HH378, prod, sort_[SortEntry(order=HELPFULNESS, direction=DESCENDING), SortEntry(order=POSITIVE_FEEDBACK, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_omega
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getReviews, 3ms
loading all QA

My HH378 4 channel logger is not connecting to my new computer, I am using the USB 120 connector that came with device. Can you suggest anything that could fix this?

Asked by: Applications Engineer MZ
The Software for the HH378 is suitable up to Windows operating system 7 so if your using OS10 you will need to uninstall and reload in back compatibility mode. If still an issue then contact for assistance.
Answered by: ApplicationsEngineeerANB
Date published: 2023-10-18

Hi, where can I download the software to connect to a PC?

Asked by: LuisB
Hello The software for the HH378 can be downloaded from this link (download via Internet Explorer):
Answered by: JA Engineer
Date published: 2023-11-14

Hi, which connector to pc is compatible with this device (Omega HH378)? I have a hard time finding it on your website. Could you help me find the right one? Thanks in advance.

Asked by: bob272727
The part number for the communication cable for the HH378 is HH300A-CABLE-USB and can be ordered on line.
Answered by: Applications Engineer AB
Date published: 2023-10-18

I have an older HH378 S/N 141009283, the REC display on the LCD screen does not display. Is it still recording data?

Asked by: Tazman
Thank you for your inquiry. Any time REC is pressed on the unit, the REC symbol will display on the screen. If it's not showing the unit maybe not be recording. Please call 1-888-826-6342, ask for Temperature Engineering for support.
Answered by: Application Engineer MC
Date published: 2023-07-26
  • y_2024, m_4, d_13, h_5CST
  • bvseo_bulk, prod_bvqa, vn_bulk_3.0.41
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_4
  • loc_en_CA, sid_HH378, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_omega
  • bvseo_sdk, java_sdk, bvseo-4.0.0
  • CLOUD, getContent, 10ms
Save Configuration