Anemometers & Digital Manometers

Air velocity meters and digital manometers for HVAC airflow, duct, and differential pressure checks — vane and hot-wire anemometers, thermo-anemometers, and pitot/manometer combinations. Products below are live REED SKUs on this site.

Common tools on this site

• Vane / thermo-anemometers — REED R1600 vane anemometer (Smart Series); 8906 and R4100 anemometer/thermometers with R4100-PROBE replacement vane when stocked; R4000SD and R4500SD data logging thermo-anemometers with R4000SD-PROBE and R4500SD-PROBE.
• Hot-wire — REED R4500SD data logging hot wire thermo-anemometer for low air speeds (from 40 fpm).
• Anemometer / manometer combo — REED R3001 anemometer/manometer when you need airflow and differential pressure in one instrument.
• Manometers — REED R3002, R3030, and R3100 manometers for gauge or differential pressure on filters, fans, and building pressure.

What these tools measure

• Air velocity / volume — duct traverses, supply/return balancing, and fume hood checks.
• Manometers — gauge or differential pressure for filters, fans, and building pressure.

Handheld air flow meters

The anemometers here are handheld air flow meters for HVAC ducts, grilles and open air. They measure air velocity, and several also calculate air volume. They are not inline flowmeters for compressed-air or process lines.

• Air volume (CFM/CMM): REED R4100 (0 to 9999 CFM/CMM), REED 8906 (calculates CFM) and REED R3001 (0 to 99,999 CFM/CMM, with push-button calculation of rectangular or circular duct areas).
• Low air speeds: the REED R4500SD hot wire thermo-anemometer, from 40 fpm.
• Logging air flow readings: the R4000SD and R4500SD data logging thermo-anemometers.

Choosing a meter

• Vane vs hot-wire — vanes (R1600, R4100, 8906) for larger ducts; hot-wire (R4500SD) for lower velocities and tighter spaces.
• Logging — R4000SD / R4500SD when you document as-found airflow; Smart Series R1600 adds app logging when your workflow needs it.
• Probe length / reach — match the duct depth and access; keep OEM replacement probes with the meter.
• Manometer range — pick R3002 / R3030 / R3100 to match the differential or gauge span your procedure uses (see each product page for its range).

Related categories

Browse environmental meters for ambient RH alongside airflow, air quality for IAQ gases, and instrument accessories for cases and media.

Models in this category

Anemometers and airflow meters

• REED 8906 Vane Anemometer: measures fpm, m/s, kph, mph and knots.
• REED R1600 Vane Anemometer: measures air velocity (m/s, ft/min, km/h and mph), air temperature and humidity.
• REED R4000SD Data Logging Vane Thermo-Anemometer: measures air velocity (fpm, m/s, kph, mph and knots) and air temperature.
• REED R4100 Vane Thermo-Anemometer with Air Volume: measures fpm, m/s, km/h, mph, knots and beaufort.
• REED R4500SD Data Logging Hot Wire Thermo-Anemometer: measures air velocity (fpm, m/s, kph, mph and knots) and air temperature.

Manometers

• REED R3001 Anemometer / Manometer: dual LCD simultaneously displays pressure, air velocity or airflow with temperature.
• REED R3002 Digital Manometer: measures gauge and differential pressure up to 5psi.
• REED R3030 Digital Manometer: measures gauge and differential pressure up to 30psi.
• REED R3100 Digital Manometer: measures gauge and differential pressure up to 100psi.

Accessories and replacement parts: REED R4000SD-PROBE Replacement Probe For R4000SD & SD-4207, REED R4100-PROBE Replacement Vane Probe For R4100, REED R4500SD-PROBE Replacement Probe For R4500SD & SD-4214.

Accessories for the REED R3300 refrigerant system: add-on and replacement parts for existing R3300 digital manifold users: REED R3300-PG Wireless Pressure Gauge, REED R3300-VAC Wireless Vacuum Gauge, REED R3300-PROBE Wireless Temperature Probe, REED R3300-TEMP Temperature Clamp for R3300-PG and REED R3300-HOSE Refrigerant Hose Set (blue, yellow, red).

Calibration

Most meters in this category can ship with ISO/IEC 17025 accredited calibration. Specify velocity and/or pressure points at quote.

Frequently asked questions

Should I choose a vane or a hot wire anemometer?

It depends on the air speed you need to measure. - Hot wire: the REED R4500SD measures from 40 fpm (to 4,921 fpm), which suits low air speeds. - Vane: the REED R4000SD covers 79 to 5,906 fpm, and the REED 8906 covers 80 to 6,900 fpm.

Are these air flow meters for ducts or for compressed-air lines?

They are handheld air flow meters for ducts, grilles and open air. They measure air velocity, and the R4100, 8906 and R3001 calculate air volume in CFM. This category does not include inline flowmeters for compressed-air or process lines.

Which anemometers calculate air volume (CFM)?

• REED R4100: calculates air volume from 0 to 9999 CFM/CMM.
• REED R3001: anemometer/manometer; air volume from 0 to 99,999 CFM/CMM, plus pressure.

Which models log data or connect to a phone?

• R4000SD (vane) and R4500SD (hot wire): data logging thermo-anemometers.
• REED R1600: a vane anemometer that also measures air temperature and humidity, with a Bluetooth 5.0 connection to the REED Smart Series App (iOS and Android).

How do the REED digital manometers differ?

All three measure gauge and differential pressure at ±0.3% FS accuracy. The difference is range: - R3002: 5 psi range, 20 psi max pressure. - R3030: 30 psi range, 60 psi max pressure. - R3100: 100 psi range, 150 psi max pressure.

For low differential pressure plus air velocity, the R3001 measures ±5000 Pa (20.07 inH2O).

Do these meters measure temperature as well?

Yes, on several models. - R4000SD and R4500SD: air temperature from 32 to 122°F (0 to 50°C), plus Type K and Type J thermocouple inputs (Type K −148 to 2372°F). - 8906: displays air velocity and air temperature at the same time.