• ALTA Wireless Accelerometer - Advanced Vibration Meter - Commercial AA
ALTA Wireless Accelerometer - Advanced Vibration Meter - Commercial AA

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Product Variations

Product Description

The ALTA Wireless Advanced Vibration Meter uses an accelerometer to measure vibration and frequency on 3 axes. The sensor reports vibration (acceleration, velocity, displacement, or acceleration peak), frequency (Hz/RPM), and crest factor on all three axes. It also reports duty cycle (how much of the report interval that vibration was present), and temperature.

Frequency Measurement Range (Based on Configured Sample Rate)
ACC RMS/AccPeak Velocity Displacement
Sample Rate Min Freq (Hz) Max Freq (Hz) Min Freq (Hz) Max Freq (Hz) Min Freq (Hz) Max Freq (Hz)
12800 200 4800 300 4800 400 4800
6400 100 2400 150 2400 200 2400
3200 50 1200 75 1200 100 1200
1600 25 600 37.5 600 50 600
800 12.5 300 18.75 300 25 300
400 6.25 150 9.375 150 12.5 150
200 3.125 75 4.6875 75 6.25 75
100 1.5625 37.5 2.34375 37.5 3.125 37.5
50 0.78125 18.75 1.171875 18.75 1.5625 18.75
25 0.390625 9.375 .5859375 9.375 0.78125 9.375

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.

What does this wireless sensor's data look like in software?

ALTA Wireless Accelerometer - Advanced Vibration Meter

What's in the box?

  • Wireless Sensor
  • Mounting Hardware
  • 2 x AA Batteries

Accelerometer Specifications

Supply Voltage 2.0–3.8 VDC (3.0–3.8 VDC using power supply) *
Current Consumption 0.2 µA (sleep mode), 0.7 µA (RTC sleep), 570 µA (MCU idle), 2.5 mA (MCU active), 5.5 mA (radio RX mode), 22.6 mA (radio TX mode)
Vibration Intensity Threshold Range Acc RMS / Acc Peak: 0 to 65.535 mm/s^2, Velocity RMS: 0 to 655 35 mm/s, Displacement: 0 to 655.35 mm **
Vibration Intensity Threshold Resolution 0.001 mm/s^2, 0.01 mm/s, .01 mm
Frequency Measurement Range See Frequency Measurement Range table in product description
Frequency Measurement Resolution 0.1 Hz
Sensitivity Range Software Configurable (0 to 2.56 g / .01 g)
Thermistor Operating Range -40°C to +125°C ( -40°F to +257°F ) / 0.1 C (0.1 F)
Rated Input Frequency Software Configurable (See Frequency Measurement Range table in product information for available Sample Rates)
Window Software Configurable (Rectangular, Hanning, Flat Top)***
Security Encrypt-RF® (256-bit key exchange and AES-128 CTR)
Weight 3.7 ounces

ALTA AA Specifications

Battery Type 2 Replaceable AA 1.5 V Batteries
Dimension 4.375 in x 2.470 in x 1.12 in
Supply Voltage 2.0 - 3.8 V (2 x AA 1.5V Batteries or Optional Power Supply)
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

ALTA 900 MHz Specifications

Operating Frequency 900 MHz Operating Frequency
Certifications Complies with Part 15 of the FCC Rules. (FCC ID: ZTL-G2SC1)
Complies with Industry Canada standards. (IC: 9794A-G2SC1)
Device Range Device Range Up to 1,200 ft. non-line-of-sight, wireless device range*
Security Encrypt-RF® (Diffie-Hellman Key Exchange + AES-128 CBC)
Specifications Image
* Hardware cannot withstand negative voltage. Please take care when connecting a power device.
** Vibration measurement mode is software configurable. Only one measurement mode can be used at a time.
*** When making Displacement measurements the Hanning filter is recommended for best accuracy and performance.

Suggested Application Uses for This Sensor

  • Vibration Monitoring
  • Bearing Monitoring
  • Bridge Monitoring
  • Motor Monitoring