ALTA Wireless Air Speed Sensor (AA)


The ALTA wireless air speed sensor measures the pressure difference between two input ports, the temperature, and altitude determines the speed at which the air is moving in a system and transmits the measurement to iMonnit. The sensor measures the pressure difference between two ports. When viewing the sensor from the top, the right inlet port is the negative or low side pressure input. When the pressure on this port is greater than the left port the sensor produces a negative pressure reading. When the pressure is greater on the left port the sensor produces a positive pressure reading. Combined with the temperature and the altitude, the sensor determines at what rate the air is flowing in a system.

ALTA Wireless Air Speed Sensor (AA) - ALTA WIRELESS AIR VELOCITY / SPEED SENSOR, 900 MHz, Line Power w/Batt Backup
Part No. Description Price Stock
MNS2-4-W2-PS-AV-LPO ALTA WIRELESS AIR VELOCITY / SPEED SENSOR, 433 MHz, Line Power w/Batt Backup $469
MNS2-8-W2-PS-AV-LPO ALTA WIRELESS AIR VELOCITY / SPEED SENSOR, 868 MHz, Line Power w/Batt Backup $458
MNS2-9-W2-PS-AV-LPO ALTA WIRELESS AIR VELOCITY / SPEED SENSOR, 900 MHz, Line Power w/Batt Backup $458
MNS2-91-W2-PS-AV-LPO ALTA WIRELESS AIR VELOCITY / SPEED SENSOR, 920 MHz Korea, Line Power w/Batt Backup $458
∗ Standard lead time is 1 week

ALTA - Leading Enterprise Grade "Internet of Things" Solutions

ALTA sensors offer 3 to 4 times the range of standard sensor platforms, extending non-line-of-sight reach to an exceptional 1,200+ feet through walls (12-14 walls typical). Using Frequency-hopping Spread Spectrum (FHSS) also allows ALTA sensors to have better interference immunity from other wireless devices.

Superior power management provides ALTA sensors with almost twice the battery life of Monnit's standard wireless sensors.

  • Coin cell sensors typically last 3+ years.
  • AA and Industrial sensors typically last up to 12+ years.
ALTA products employ Monnit's new Encrypt-RF® Security (256-bit Diffie Hellman key exchange and AES-128 CBC encryption for all sensor data messages), so security is maintained at all communication points from sensor to gateway, gateway to software, then back again.

Integrated on-board data storage allows ALTA sensors to store data messages if communication to a wireless gateway is disrupted (power outage, Internet outage, or out of range). Messages that can't be delivered will be time-stamped and stored in memory (up to the last 512 messages) until communication with the gateway is restored, at which point the messages will all be transmitted.

Over-the-air updates allow ALTA products to be updated remotely if new fixes or features become available.

The standard version of this sensor is powered by two replaceable 1.5 V AA sized batteries (included with purchase). This sensor is also available with a line power option. The line powered version of this sensor has a barrel power connector allowing it to be powered by a standard 3.0 - 3.8 V power supply (Included with Line Power option upgrade). The line powered version also uses two standard 1.5 V AA batteries as backup for uninterrupted operation in the event of line power outage.

Power options must be selected at time of purchase, as the internal hardware of the sensor must be changed to support the selected power requirements.

Packing List


  • Power Supply
  • USB Cable
  • Wireless Sensor
  • Mounting Hardware
  • 2 x AA Batteries
  • AC Power Supply

Features


  • 900/868/433 MHz Operating Frequency
  • Pressure Range: -500 Pa to 500 Pa
  • Allowable Overpressure: 100 kPa
  • Rated Burst Pressure: 500 kPa
  • Max Humidity for Long-Term Exposure: 40°C dew point
  • Sensing Range: Range at 0 m Altitude: 0-30m/s
  • Range at 5000 m Altitude: 0-40m/s
  • Range at 8000 m Altitude: 0-50m/s
  • Span Repeatability: 0.5% of reading
  • Span Shift Due to Temperature Variation: < 0.5% of reading per 10°C
  • Offset Stability: < 0.05 Pa/year
  • Calibrated For: Air, N2
  • Media Compatibility: Air, N2, O2, non-condensing
  • Weight: 3.7 oz.
  • Security: Encrypt-RF® (Diffie-Hellman Key Exchange + AES-128 CBC)
  • Supply Voltage: 2.7 - 3.8 VDC (3.0 - 3.8 VDC using power supply)
  • Battery Type: 2 Replaceable AA 1.5 V Batteries
  • Dimension: 4.375 in x 2.470 in x 1.12 in
  • Battery Life: At 1 hour heartbeat setting, included AA batteries will typically last 6-8 Years. **
  • Max Operating Temperature Using AA Alkaline: -18°C to 55°C (0°F to 130°F)
  • Max Operating Temperature Using AA Lithium: -40°C to 60°C (-40°F to 140°F)
  • Optimal Battery Operating Temperature: +10°C to +50°C (+50°F to +122°F)
  • Enclosure Material: ABS

* Actual range may vary depending on environment.
** Battery life is determined by sensor reporting frequency and other variables.