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Hot Wire Anemometer with Real Time Data Logger

LCD Display, Range 40 to 3940 FPM, RS232/USB


Item# HHF-SD1

 This item is available for quick shipping
Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 $551.95
5-9 $518.83
10-24 $507.79
25-49 $474.68
50-99 $469.16
100+ $452.60

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Lead Time ( If not in Stock): 2 weeks

LCD Display, Range 40 to 3940 FPM, RS232/USB HHF-SD1 HHF-SD1
  • Slim Probe, Ideal for Grilles and Diffusers
  • Type K or J Thermocouple Input
  • Real Time SD Memory Card Data Logger
  • LCD with Green Light Backlighting
  • Velocity and Air Temperature Measurements
  • RS232/USB Interface (Optional Cable)
5 Year Warranty

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Application Type
Velocity Range
Max Process Temperature
Probe Diameter
Probe Length (Maximum)
Supply Power
Output Signal

Product Specs

The OMEGA™ HHF-SD1 combination hot wire and standard thermistor anemometer with SD card data logger has multiple features that make it suitable to use in such applications as environmental testing, balancing of fans/motors/ blowers, air conveyors, clean rooms, and flow hoods. What sets the HHF-SD1 apart from other hot wire anemometers is that it incorporates a real-time SD card data logger.

The HHF-SD1 measures velocity, and air temperature, and has an input socket that accepts a Type J or K thermocouple that can be used as a highly accurate thermometer. The integrated hot wire and standard thermistors provide fast and accurate readings-even at low velocities. The HHF-SD1 is innovative and easy to operate. Download data from the SD card into an Excel spreadsheet without the need for special software.

Display: 52 x 38 mm (2.05 x 1.5') LCD with green backlight (on/off)
Measurement Units:
    Velocity: m/s, km/h, ft/min, knots, mile/hr
    Temperature: °C or °F
Sensor Construction: Glass bead thermistor
Sampling Time:
    Auto: 1 to 3600 seconds
    Manual: Push the data logger button once; will save data one time
Memory Card: SD memory card
Temperature Compensation: Automatic
Display Update: At 1 second
Data Output (RS232/USB): With optional cable/software
Operating Temperature: 0 to 50°C (32 to 122°F)
Operating Humidity: Less than 85% RH
Power: 6 'AAA' alkaline or heavy-duty batteries (included), or 9V power adaptor (optional)
Current Draw: 15 mA DC (without SD card or backlight), 36 mA (all functions)
Weight: 515 g (1.13 lb)
    Instrument: 203 L x 76 W x 38 mm D (8 x 3 x 1.50')
    Probe: 12 mm (0.47') diameter, 280 to 940 mm (11 to 37') length Air
Temperature Measuring Range: 0 to 50°C (32 to 122°F)
Resolution: 0.1°C (0.1°F)
Accuracy: ± 0.8°C (1.5°F)

Rated 4 out of 5 by from Good service As always I so happy with my last purchase, thank you!!
Date published: 2017-08-16
Rated 5 out of 5 by from Useful for outdoor wind monitoring Has worked as advertised for us. Anything that outputs a .csv rather than some proprietary filetype is worth it as far as I am concerned.
Date published: 2021-07-13
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Hi, ihave 2questions:1)when i put aKthermocouple tomeasure velocity and low temperature does itaffect the measurement of velocity because the device normally works from 0 to 50°C,2)would it also give a temp/veloc vs time plot when i put this thermocouple.

Asked by: moun1992
Thank you for your inquiry. If you plan to measure below or at lower temperatures, it will not measure accurately and it will not provide a velocity plot.
Answered by: Applications Engineer JC
Date published: 2020-12-15

How many hours of continuous measurement can Hot Wire Anemometer with Real Time Data Logger (Item# HHF-SD1) do while logging. Can it be set to take measurements only at certain intervals e.g. every 10 seconds?

Asked by: Dammy
Thanks for your question. This model can be set for one of the following sampling times: 0, 1, 2, 5, 10, 30, 60, 120, 300, 600, 1800 or 3600 seconds. The length of time this unit is able to record depends upon the sampling time selected and the size of the SD card being used. Also, depending on the sampling time and how long you intend to record for, you may want to get a 9-VDC adapter to power the unit PART # ADAPTER-SD.
Answered by: Jane
Date published: 2019-05-20

Hi, May i know is this a Constant Temperature Anemometer (CTA)? Could this be able to measure air velocity (or possibly other turbulent properties) in a high turbulence condition (Turbulence intensity 5%)?

Asked by: Melvin
Thank you for your inquiry. This anemometer is not CTA, as it can do temperature compensation. Also, this meter is meant for turbulent applications.
Answered by: AS Engineer
Date published: 2020-02-13

Does this product come with a certificate of calibration?

Asked by: ssulliv3
Yes, there is an option to include a NIST Certificate and that part number is HHF-SD1-CAL-3.
Answered by: Applications Engineer JC
Date published: 2020-02-26

Can we write our own software to automatically read data from the instrument? Where can we find the commands?

Asked by: Gino
Thank you for inquiry about the hot wire anemometer and would advise if you can compose an email and send it to flow@omega.com and can provide the information.
Answered by: Applications Engineer JC
Date published: 2020-03-27

When taking velocity measurements, the meter will show increasing velocity until about 3100 ft/ min. As air speed increases beyond this, the measurement will decrease and a '-' sign appears at the far left. What does this mean and how to fix?

Asked by: BillDee
Measurements are coming close to the upper measurement limit for this device (3940ft/min). But for why the measurements would start decreasing and '-' code, I don’t have an answer. The unit will need to come back for evaluation.
Answered by: ASE HPO
Date published: 2020-04-29

What frequency range is this able to measure? What is the format of the output, a time series or does it provide any FFT outputs?

Asked by: Doug99
Thanks for your question. The HHF-SD1 does not measure frequency; it measures velocity and temperature and it only has a serial communication output RS232.
Answered by: ASE HPO
Date published: 2019-08-20

Hi, does it give velocity values in ducts where the air is circulated at low temperatures (0 to -24 degrees) when we put a K thermocouple? thanks

Asked by: moun1992
Thank you for your inquiry. Unfortunately, it will not be able to measure that low of a temperature.
Answered by: JC ENGR
Date published: 2020-12-18
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