New Mountain NM150WX

New Mountain NM150WX

Ultrasonic Weather Station
Model: 0-1-1-0
Our Price: $1399.95
In Stock - Will Ship Today, 05/21/2019
If Ordered By 3:00 PM ET
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The New Mountain Innovations NM150WX Ultrasonic Weather Station is the perfect choice for mobile professionals who require accurate real-time wind measurements while on the go, such as hazmat and fire mobile command centers, storm chasers, chemical spray operations, remote severe environments, maritime operations, and many more.

It is the only all-in-one weather sensor that calculates true and apparent wind speed and direction, barometric pressure, air temperature, relative humidity, dew point and wind chill temperature. The internal compass and Global Positioning System, calculates true wind speed and direction. The UV stabilized; compact housing is fully waterproof and resistant to chemicals.

The cabled (not wireless) PC-based NM150WX Ultrasonic Weather Station comes with the professional version of Weatherview32 software. Data can be viewed in both digital and analog format and can be continuously saved to a file. A display console is not available for this weather station, a personal computer is required.

How the New Mountain NM150WX Ultrasonic Weather Station Works

The New Mountain NM150WX ultrasonic wind sensor (ultrasonic anemometer) measures apparent wind speed and direction. The weather station contains four ultrasonic transducers, visible through the four holes in the top of the sensor’s wind channel (see figure 1 above). These transducers operate in pairs - one transducer injects a pulse into the air, and the other (directly opposite to it) listens for the arrival of that pulse (see figure 2 above). Each pulse bounces off the anodized aluminum plate at the bottom of the wind channel and is carried by the wind to arrive at the opposing transducer a short time later. When there is no wind, the pulse travels at the speed of sound from the sender to the receiver. Whenever the wind is blowing in that direction, the pulse will arrive sooner than if the air is still. Similarly, whenever the wind is blowing in the opposite direction, the pulse will arrive later than if the air is still. The four transducers take turns in sending and receiving pulses to cover all eventualities of wind direction. A built-in microprocessor combines the measurements from all four transducers to calculate the resultant wind speed and direction. The sensor monitors the air temperature, to compensate for the fact that the speed of sound in air changes with temperature. (The aluminum plate heats up to prevent frost and moisture from altering the wind readings.) Flow disturbances caused by the five posts are compensated for in software.

Every NM150WX ultrasonic wind sensor is individually calibrated in New Mountain's state-of-the-art wind tunnel, whose wind measurements are traceable to a National Institute of Standards and Technology (NIST) Standard Reference Material. This testing provides compensation for variations in production as well as asymmetry in the airflow channel. The NM150WX has the unique ability to display both true and apparent wind. True wind is the actual motion of the air relative to the earth. Apparent wind is the wind which an observer experiences while moving or on a moving vehicle. It is the result of these two motions - the actual motion of the air (the true wind) and the motion of the vehicle. If the vehicle is not moving, then the true and apparent wind will be the same.

The New Mountain NM150WX utilizes a standard 1-14” UNS thread connection to accommodate standard mounting hardware. The waterproof base connector assures trouble-free installation and servicing, while a quick disconnect feature allows for easy removal. The NM150WX ships with a 82 foot (25 meter) data cable, RS485 to RS232 converter, data cable serial interface adapter, 12 volt power supply, and owners guide. A number of optional accessories are also available, including a serial to USB converter.


  • Apparent Wind Speed (mph, km/h, or knots)
  • Apparent Wind Direction
  • True Wind Speed (mph, km/h, or knots)
  • True Wind Direction
  • Outdoor Temperature (ºF or ºC)
  • Relative Humidity (RH)
  • Dew Point Temperature (ºF or ºC)
  • Wind Chill Temperature (ºF or ºC)
  • Barometric Pressure (mb or inHg)
  • Global Positioning System (GPS)
  • Magnetic Compass Heading
  • Heading Relative to True North
  • True Wind Chill Temperature (ºF or ºC)
  • Wind Speed
    • Range: 0.5 to 99.9 knots (0.6 to 114.5 mph)
    • Resolution: 0.1 knot (.01 mph)
    • Accuracy: +/-1 knot (+/-1.1 mph) or +/- 4%, whichever is greater. Below 0°C (32°F) the wind speed may be less accurate.
  • Wind Direction
    • Range: 0° to 359°
    • Resolution: 1°
    • Sensitivity: +/-1.5° - Below 0°C (32°F) the wind direction may be less accurate.
  • Temperature
    • Range: -30° to 50°C (-22° to 122°F)
    • Resolution: 0.1°C (0.1°F)
    • Accuracy: +/-1.5°C (+/-2.7°F) at 2 knots (2.3 mph) wind speed
  • Compass Accuracy: +/-2° static heading
  • Barometric Pressure
    • Range: 850 to 1150 mb (25 to 34 inHg)
    • Accuracy: +/-1.5%
  • Relative Humidity
    • Range: 10 to 95% RH
    • Accuracy: +/-4% RH
  • Operating Frequency: 40 KHz
  • Supply Voltage: 10 Vdc to 16 Vdc
  • Power Consumption: <100 mA in normal operation
  • Sensor Baud Rate: 4,800 bps (can be increased to 38,400 bps with a command)
  • Sensor Pole Mount Thread Size: 1-14” UNS (Unified National Standard)


  • See image above for dimensions

Computer Requirements (Professional version of Weather View 32):

  • Operating System: Windows NT 4.0+, 2000, XP or later
  • Processor: Pentium 1 GHz or above
  • RAM: 512 mb or above
  • Hard disk: 500 mb free space (plus 50 mb per year for data storage)
  • CD-ROM disk drive
  • Keyboard and mouse
  • RS232 Compatible COM Port or USB port with USB to Serial adapter

For Window Vista users (per Weather View 32 Help):

  • Exit out of Weather View 32
  • Go to the computers Desktop
  • Right-Click on the wv.bat icon if running 32 bit version of Vista
  • Right-Click on the wv64.bat icon if running 64 bit version of Vista
  • Click the “Run as Administrator” option
  • When asked “Windows needs your permission”, select Continue
  • A black window will appear and disappear
  • Start Weather View 32


Average Customer Rating 5.0 5 stars (based on 2 reviews)

By Jack
From Smyrna, GA
5 stars Weather Station
I am only the buyer and not the user.
By Richard
From Euless, TX
5 stars New Mountain Innovations NM150WX Ultrasonic Weather Station
The purchase of this professional weather station and mobility pack started out very bumpy. The unit and accessories arrived quickly, but the wrong data cable had been shipped with the order. An extension cable was shipped instead of the required primary data cable. The WeatherShack customer service team worked quickly to identify the reason for the mis-shipped cable. Evidently, the vendor had mistakenly shipped extension cables to WeatherShack and did not send any primary data cables with the weather stations. Customer service then communicated directly with the vendor and asked them to have a primary data cable sent directly to me via priority mail. The WeatherShack customer service representative also sent me a return-shipping label that I used to ship the extension cable back to New Mountain, so that I would not be charged. In the end, I received the correct cable and set up the station to begin testing. This unit is actually an AirMar 150WX station that has been re-branded for New Mountain (a common practice). I am very familiar with Airmar from past sailboat excursions and it is a good quality, solid unit engineered to withstand the elements. The Weathercaster software (from AirMar) is easy to install and set up but does not provide peak event data from the console view. The Weatherview32 software was a challenge to get installed due to the fact that all of the documentation dates back to Windows XP and Vista (my Chase vehicle laptops runs Windows 10) and it took a lot of trial and error to realize I needed to register multiple Active X components using a batch file (included with Weatherview32) that was created for Vista 64. Weatherview32 documentation needs to be updated to address devices running current Windows OS. In fact, the documentation states that the software is only certified to run on Windows XP, but I can state that I have it running reliably on a new ASUS Windows 10 laptop. Now on to the weather station tests... Running Weatherview32 on five separate 6 hour tests revealed very accurate readings that were all well within the specs advertised. Wind speed and direction is very precise and the accurate response to light swirling winds was exceptional. Wind speed readings above 70 MPH are as accurate as they are at 1 MPH. The unit sends updates each second and latency measured less than 1 ms at each 1 second update interval. All in all I am impressed with this mid-range professional weather station and look forward to many years of use. NOTE: All observed measurements were verified using a 6k dollar Orion Weather station mounted on a HAZMAT emergency response truck. I compared data readings while we were sitting still, moving at 30 to 40 MPH and at highway speeds (70-80 MPH). The Orion unit gets yellow-tagged (calibrated) every year so is a dependable source for comparing data.

WEATHERSHACK STAFF UPDATE: The product vendor has assured us that WeatherView32 is fully compatible with Windows 10. We regret this customer had issues getting it installed. We have had no reports of problems from other customers. We also regret this customer initially received the wrong cable. As the customer indicated, the vendor inadvertently sent us extension cables. The vendor resolved the customer’s issue by shipping the correct data cable directly to the customer.


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