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HHF144-Series
Precision Handheld Rotating Metal Vane Hygro-Thermo Aneometer
- Measure Relative from 5.0 to 95% RH
- Measure Airflow in Environments from -20 to 100°C (-4 to 212°F)
- Temp Measurements in Humidity Sensor Standard
- Minimum and Maximum Air Speed and Temp
HHF144-Series
From
£
1,317.69
Product Overview
- Accuracy ± 1 %
- Accuracy Detail ± 1.0% of reading ± 1-digit
- Additional Features 1 Volume Calculation, Temperature, Humidity
- Battery life 150 hr
- Battery Size and Type Alkaline AA
- Cable Length 5 ft
- Certifications NIST Traceable Calibration
- Display Type Backlit LCD
- Enclosure Temperature, Max 50 °C
- Enclosure Temperature, Min 0 °C
- Form factor Handheld
- Height 6.5 in
- Humidity Accuracy ± 2% RH
- Humidity Range 5 to 95% RH
- Length 3.25 in
- Number of Digits 4
- Process Temperature, Max 80 °C
- Process Temperature, Min -20 °C
- Resolution 1 FPM
- Response Time Note Response Time Relative Humidity: Up to 90% of change in measured value in 15 seconds Temperature: Approx. 60 sec in still air; Approx. 10 sec in moving air streams
- Series ID HHF144-Series
- Supply Power Note 150 hours Appx
- Temperature Accuracy ± 0.3 °C
- Temperature Note Temperature (Using Standard Combination Temp/Humidity Probe): -20 to 80°C (-4 to 176°F) Temperature (Using Optional Separate Temperature Probe): -95 to 200°C (-139 to 392°F)
- Temperature Sensor Type Thermocouple Type K or Thermistor
- Width 1.5 in
Supported Applications
The Omega HHF144 Series is a precision handheld rotating metal vane hygro-thermo anemometer designed to measure air velocity, temperature, and relative humidity. The series supports applications in HVAC systems, aerospace development, industrial process airflow monitoring, fluids research, manufacturing facilities, laboratories, computer rooms, environmental control setups, and flow hood monitoring.
Operating Conditions & Performance
The HHF144 Series operates across distinct measurement ranges depending on the probe configuration. The 70 mm (2¾") diameter probe (HHF144B) measures air velocity from 0.2 to 40.00 m/s (40 to 7800 FPM), while the 25 mm (1") diameter probe (HHF144A) covers 1.5 to 35.00 m/s (300 to 6800 FPM). Relative humidity is measured from 5.0 to 95% RH with a resolution of 0.1% RH.
Temperature measurement capabilities vary by sensor type: the integrated air probe supports -20 to 100°C (-4 to 212°F), and the temperature/humidity probe covers -20 to 80°C (-4 to 176°F). When using an optional separate temperature probe, the range extends from -95 to 200°C (-139 to 392°F).
Accuracy specifications are defined as follows:
- Air Velocity: ±1.0% of reading ±1-digit
- Temperature: ±(0.3°C + 0.2% of reading in °C)
- Relative Humidity: ±2.0% RH
The instrument operates within an ambient temperature range of 0 to 50°C (32 to 125°F). Response times are approximately 60 seconds for temperature in still air and 10 seconds in moving air streams; relative humidity reaches up to 90% of the measured value change in 15 seconds.
Configuration Options
The series is configurable by probe diameter, output signal type, and protective accessories. The primary variants include:
- Probe Sizes: HHF144A with a 25 mm (1") dia. probe; HHF144B with a 70 mm (2¾") dia. probe.
- Output Options: Standard units provide digital display readings. Optional configurations include analog voltage output (suffix "-V"), USB communications (suffix "-USB"), and RS-232 or 4–20 mA modules referenced in supporting documentation.
- Protective Accessories: A protective boot is available by adding the suffix "-PB" to the model number. Extension rods (flexible, straight, and with handle) are offered as accessories.
The instrument is powered by 3 AA alkaline batteries (included). Replacement parts include specific vane probes for both diameters, a replacement temperature/humidity probe, and battery packs.
Key Product Differences
Differences within the HHF144 Series are primarily defined by the physical dimensions of the rotating vane probe and the inclusion of optional output interfaces. The HHF144A model utilizes a 25 mm (1") diameter probe optimized for higher velocity ranges starting at 300 FPM, whereas the HHF144B employs a larger 70 mm (2¾") diameter probe capable of measuring lower velocities down to 40 FPM. Models with suffixes such as "-V" or "-USB" denote specific hardware additions for analog voltage transmission or digital data logging via USB, respectively.
PDFs & Manuals
