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Ultra-High Accuracy and Resolution Digital Thermistor Thermometer


Item# HH42A

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 $654.60
5-9 $621.87
10-24 $608.78
25-49 $582.59
50-99 $569.50
100+ $556.41

In stock

Lead Time ( If not in Stock): 2 weeks

Ultra-High Accuracy and Resolution Digital Thermistor Thermometer HH42A HH42A
  • Works with Standard OMEGA™ “400” Series Thermistor Probes with Phone Jack Termination
  • Ultra-High Accuracy, up to ±0.015°C (±0.027°F)
  • Includes NIST Traceable Calibration Certificate
  • High Resolution, up to 0.01°F or °C
  • -20 to 130°C (-4 to 266°F) Temperature Range
  • USB Communications
  • Hold Function, Auto Shutoff, Rate of Change Arrow Indicators, Over/Under Range and Low Battery Indication
5 Year Warranty

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Product Specs

The OMEGA™ HH42A digital thermometer is the most recent addition to a series of instruments based upon our high precision temperature measurement system technology.

This instrument provides the accuracy and resolution needed to meet the measurement needs of a precision laboratory or critical process control and testing functions. Free software is included enabling users to start recording, charting, and storing data in a familiar file format on their PC within minutes of opening the box. A well-defined command set and output data format allows users to easily connect computer systems to the thermometer to create custom displays and report formats. There are a wide range of custom designed application specific thermistor probes that can be selected for use with this instrument. The selected probe would be hardwired to the instrument and calibrated together to meet specific high accuracy requirements. Interchangeable probes with plug-in connectors are also offered.

Resolution: 0.01°C
Temperature Range: -20 to 130°C (-4 to 266°F) (dependent upon probe selection)
Display: °C or °F
Thermometer Measurement Accuracy: ±0.02°C
Total Accuracy and Temperature Range: Combination of the meter and the probe being used
Data Sample Rate: Approximately 7 samples/second
Storage Conditions: 10 to 60°C (50 to 140°F), 0 to 70% RH
Operating Conditions: 10 to 40°C (50 to 104°F), 0 to 85% RH
Output to Computer: USB
Power: 9V battery (included)
Recalibration: Recommended every 12 months
Software: Outputs .xls files; all drivers included, Java 6.0 or later must be installed; licensing to use drivers and software on multiple computers not required; no other software is required

Rated 4 out of 5 by from Good Unit Unit works great when it works. I have problems with the 1/4 inch phono jack on the unit recoginizing the temp probe. It is intermittent and I have to wiggle or re-insert it a couple of times so I can get it to work.
Date published: 2017-07-10
Rated 5 out of 5 by from Excellent temperature meter We have had these units for several years. What is great about them is that I can switch meters and/or probes and the replacements will always read the same to +/- 0.1 C. They really are this good, which means we don't need to do extensive internal calibrations.
Date published: 2020-06-11
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Are there drivers or documentation to communicate with the HH42A with an end user developed application (C, LabVIEW)?

Asked by: BMagiske
Omega provides the Software to communicate and Data log with the HH42A and no additional protocols are available. The drivers are accessible from the Software link of the product page.
Answered by: ANB ENG
Date published: 2021-01-08

i am looking to buy Ultra-High Accuracy and Resolution Digital Thermistor Thermometer. Item# HH42A does this model come with probe ?

Asked by: Dipak
Thank you for your inquiry! The model does not come with a probe included.
Answered by: Application Engineer CK
Date published: 2021-06-06

Will this Thermometer work with the HSTH-44033-40-PP and the HSTH-44033-120-PP?

Asked by: joep
Yes, the 44033 thermistor element (2252 ohm) is compatible with the HH42A meter which accepts the 2252 ohm thermistors.
Answered by: Temperature
Date published: 2019-12-14

The thermistor probe is already included in the total price of this unit?

Asked by: ORSS
Thank you for your inquiry. No Probe Included.
Answered by: Engineer CB
Date published: 2020-07-08
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