Monnit Vibration Meters use an accelerometer to measure g-force on 3 axes and then determines speed and frequency from this measurement. The sensor measures vibration once every Measurement Interval, which can be set as low as 1 minute and as high the Heartbeat Interval. The sensor is designed to measure continuous vibration and be low powered so it captures vibration for less than a second during its Measurement Interval.
The sensor uses a Sensitivity Threshold to filter noise or low level vibrations. If this threshold is set to 0 then any vibration captured during the Measurement
Interval will contribute to the duty cycle and will be analyzed, even very low level vibrations. The Vibration Meter will also report the duty cycle,
or how long the sensor was measuring vibrations throughout the heartbeat.
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. Monnit's AA sensors have a battery
life that typically lasts 10+ years.
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.
Features:
- Reports data as speed (mm/s) and frequency (Hz) on all three axes, and how long the sensor was measuring during the interval.
- Adjustable measurement methods: Peak acceleration RMS, peak velocity RMS, and true RMS.
- Free iMonnit basic online wireless sensor monitoring and notification system to configure sensors, view data and set alerts via SMS text and email.
- Includes wireless sensor, mounting hardware and 2x AA batteries
Specifications
- Speed Measurement Range: 0 to 25.5 mm/s
- Speed Measurement Resolution: 0.1 mm/s
- Frequency Measurement Range: 0 to 256 Hz
- Frequency Measurement Resolution: 1.5625 Hz rounded down to nearest 1 Hz
- Vibration Intensity Threshold Range: 0 to 1.701 g
- Vibration Intensity Threshold Resolution: 0.063 g
- Security: Encrypt-RF (256-bit key exchange and AES-128 CTR)
- 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
