Marmonix MAN-740 HVAC Anemometer with Airflow CFM
28 Comments
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3-in-1 Tech: Wind speed, temp, and humidity on one screen
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Fast Data: Captures 5 precise readings every second
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Airflow Pro: Full CMM, CFM, and CMS volume calculations
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HVAC Ready: Max/Min modes for easy duct and vent testing
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Description
The Marmonix MAN-740 is a compact multifunction anemometer for HVAC and environmental work. It measures wind speed (0.4–30.00 m/s), airflow volume (CMM, CFM, CMS with area setting), temperature (–20 °C to +60 °C), and relative humidity (0–100% RH) on a backlit LCD—sampling up to five readings per second.
Max/Min, data hold, and selectable units (m/s, km/h, ft/s, ft/min, knots) keep duct and vent checks efficient. Compare vane and multifunction options in the anemometers category, and see how airflow meters sit beside other field tools in our complete test & measurement guide.
MarMonix MAN 740 Anemometer Key Features
Before listing the features, it’s worth noting that the MAN 740 combines portability with professional-grade accuracy. This ensures consistent performance in both indoor and outdoor environments.
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Accurate measurement of wind speed, airflow, temperature, and humidity
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Multiple display units for wind speed (m/s, km/h, ft/min, knots) and airflow (CMM, CFM, CMS)
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Fast sampling rate with up to 5 readings per second
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Max/Min recording, data hold, and airflow area setting for duct analysis
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Bright backlit LCD for clear visibility in dark environments
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Automatic power-off to conserve battery life
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Compact dimensions (~177 × 50.15 × 30 mm) and lightweight (~85 g) for portability
MarMonix MAN 740 Anemometer Specifications
| Parameter | Details |
|---|---|
| Wind Speed Range | 0.4 – 30.00 m/s |
| Wind Speed Accuracy | ±(2% + 2) |
| Temperature Range | –20 °C to +60 °C |
| Temperature Accuracy | ±2 °C |
| Humidity Range | 0% – 100% RH |
| Humidity Accuracy | ±2% RH |
| Sampling Rate | 5 readings per second |
| Units | m/s, km/h, ft/s, ft/min, knots, CMM, CFM, CMS |
| Functions | Max/Min, Data Hold, Area Calculation |
| Display | LCD with backlight |
| Auto Power-Off | Yes (can be disabled) |
| Dimensions | 177 × 50.15 × 30 mm |
| Weight | ≈85g (without batteries) |
Use cases
- HVAC balancing — supply/return vents and duct traverses
- Indoor air / comfort surveys — velocity with temp and humidity context
- Warehouse and factory ventilation checks
- Outdoor spot wind readings for site work (within instrument limits)
Note: The MAN-740 is positioned as a handheld multifunction airflow meter for HVAC and field surveys. Always match probe type and range to your application when comparing models in the anemometer range.
Contents of the MarMonix MAN 740 Anemometer box
- MAN 740 (main unit)
- User Manual
- 2 x AAA Battery
- Certificate of Conformity
- Warranty card
Downloads
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Reviews (28)
Jean_Tech –
fast shipping and great product the MAN 740 is exactly what our team needed for field service
Airflow_Expert_99 –
build quality is very solid for the man740 backlit display is actually bright enough to use in dark ducts very happy with it
Kwame_Field_Pro –
very lightweight and easy to carry around all day man_740 is now my favorite tool for quick diagnostics on site
Hans “Metric” Schmidt –
top quality i tested the marmonix 740 against my expensive bench meter and the wind speed is spot on fast shipping too
Sanjay_G –
simple to use and very accurate the man740 is great but i wish the carry case was a bit stiffer for protection in my truck
Niklas_Berg –
best handheld anemometer for hvac the temp sensor on the man_740 is actually accurate compared to others
Chloé Dubois –
meter works fine but it took too long to arrive at my house in france MAN-740 is accurate though once i got it
Javier Gomez –
excelente producto the marmonix man 740 is very tough and the measurements are consistent
Ivan_P –
everything works as described the humidity sensor is reliable for my industrial jobs man-740 is a beast
Lucas “Fan” Silva –
solid meter for the price MAN740 is good but i wish the buttons were a little larger for when i wear gloves
Min-Jun K –
great support from the team they helped me understand the area setting on the man-740 very quickly
Siobhán O’Reilly –
love the screen on this man740 very easy to read even in direct sun but the manual font is very small
Lars Jensen –
good tool overall the man-740 is great for my hvac projects but the batteries were tricky to get in at first still a solid 4 stars
Chen_Wei –
very good for factory maintenance the sampling rate on the man740 covers everything i need
Ingrid_N –
perfect for my toolkit man-740 is small but powerful delivery was fast though the box was slightly dented
Tuan_HVAC –
safe and reliable the sensors on the man740 give me peace of mind when signing off reports
Fatima Al-Harbi –
excellent service and fast delivery i use the MAN_740 for our environmental surveys and it works perfectly
Gábor_F –
highly recommend the man_740 for anyone doing maintenance build quality is top tier for a handheld
Amira_M –
i love how simple the panel is on the man-740 no confusing buttons just works
Ali_90 –
five stars for the man 740 the backlight is a game changer in dark attics and basement vents
Reza_Rahmani –
accurate and durable the man_740 has been dropped once and still works like new
Arjun_The_Sparky –
very fast delivery to dubai using the man740 for residential vent checks and it hasnt failed me yet
Svetlana_82 –
the meter is good but i had a hard time switching between m/s and knots at first man 740 is accurate though
Piotr “Vane” Kowalski –
the cfm calculation feature on this man 740 is exactly what i needed for duct testing very rugged device
Mateo “Windy” Rossi –
finally a good anemometer that doesnt cost a fortune the MAN 740 is very accurate and shipping was super fast to italy
Budi_Tech –
package arrived in perfect condition to jakarta the MAN 740 is very precise for warehouse ventilation checks
Liam “Ohm” O’S –
best value for an anemometer the man740 is easy to use but i had to buy my own spare batteries immediately
Diego_Air_Flow –
cfm mode is a must for my job and the man 740 delivers perfectly but the strap is a bit thin