HHF11-Meter

Air Velocity/Humidity/Dew Point/Wet Bulb/Air Volume Meter

Measures: Temperature, Dew Point, Relative Humidity, Wet Bulb, Air Velocity, Air Volume, Capacity
Lightweight, Easy to Maneuver Measurement Vane
Single Point Average
°C/°F Selectable

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HHF11-Meter

From ^SGD 812.23

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1 Variations available

See all series options below

Data Sheet

Product Overview

Accuracy ± 5 %
Air Velocity, Min 0.3 m/h
Battery Size and Type Alkaline AAA
Cable Length 50 cm
Display Type LCD
Enclosure Temperature, Max 50 °C
Enclosure Temperature, Min 0 °C
Form factor Handheld
Height 6.14 in
Humidity Accuracy ± 3% from 10 to 90%, ± 5% above 90%
Length 2.44 in
Number of Digits 5
Operating Humidity 0 to 90% RH
Process Temperature, Max 60 °C
Process Temperature, Min -20 °C
Resolution 0.1 m/s
Response Time 1 Sec
Series ID HHF11-Meter
Supply Current 8 mA
Supply Power Note Operating Current: 5 to 8 mA
Temperature Accuracy ± 0.6%
Temperature Sensor Type Thermocouple Type K or Thermistor
Vane Diameter 2.9 in
Volumetric Flow Rate, Max 99999 CFM
Volumetric Flow Rate, Min 0 CFM
Weight 263 g
Width 1.1 in

Supported Applications

The Omega HHF11 series is a handheld anemometer-psychrometer designed for HVAC applications. The HHF11A model measures air velocity, humidity, dew point, wet bulb temperature, air volume, and capacity (BTU). It features a remote fan sensor with a tunable protective cap and microprocessor-based circuitry to track maximum and minimum values.

Operating Conditions & Performance

The HHF11A operates within an ambient temperature range of 0 to 50°C (32 to 122°F) with a humidity rating of less than 90% RH. The device is powered by four "AAA" batteries or a 9VDC adapter and includes auto power-off after 10 minutes of inactivity.

Performance specifications per the series data sheet include:

Air Velocity: Range 0.3 to 35 m/s (1 to 114 ft/s) with ±5% accuracy and a response time of 1 second.
Air Volume: Range 0 to 99,999 m³/min (0 to 99,999 ft³/min) with ±5% accuracy.
Capacity: Range 0 to 99,999 BTU/h (0 to 99,999 kcal/h) with ±3% accuracy.
Temperature: Range -20 to 60°C (-4 to 140°F) with ±0.6°C (1°F) accuracy.
Humidity: Range 0 to 100% with ±3% from 10 to 90%, and ±5% above 90% accuracy.
Dew Point: Range -68 to 70°C (-90 to 158°F) with ±3% from 10 to 90%, and ±5% above 90% accuracy.
Wet Bulb: Range -22 to 70°C (-7.6 to 158°F) with ±3% from 10 to 90%, and ±5% above 90% accuracy.

The unit weighs 263 g (9.28 oz) without batteries and has overall dimensions of 157 x 62 x 28 mm (6.18 x 2.44 x 1.1"). The measurement vane diameter is 74 mm (2.9").

Configuration Options

The HHF11 series supports the following configuration options and accessories:

Housing & Display: Features a jumbo LCD display with selectable units for °C/°F, %RH, m/s/ft/m (or ft/s), Kw/Btu/h, cm/inch. The keypad includes Power, MODE, ENTER, Mx/Mn, REC START, and HOLD functions.
Power: Operates on 4 "AAA" batteries or a 9VDC adapter; auto-sleep mode is active when the meter is off.
Data Management: Tracks maximum (MAX) and minimum (MIN) values. Optional software and RS232 cable are available for data transfer.
Calibration & Certification: The fan and meter are sold as a kit calibrated together. A NIST-traceable 4-point calibration certificate is available via the CAL-3-FLOW option.

Key Product Differences

The primary model in this series is the HHF11A, described as an air-flow meter with a lightweight measurement vane and ball-bearing fan. The device includes a hard carrying case and operation manual. Available accessories include:

HHF11A-VANE: Replacement vane.
HHF91-SW: Software and RS232 cable (also referenced as ASFT KIT in the user guide).
CAL-3-FLOW: NIST-traceable 4-point calibration certificate.
MN2400-12: Package of 12 replacement "AAA" batteries.