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.
Monnit Industrial Sensors come in an IP65, NEMA 4X, CE rated, sealed, and weatherproof enclosure. They are powered by a single, replaceable, Industrial grade 3.6 V battery (included).
An optional solar powered version is also available. The solar powered version includes a Lithium Iron Phosphate rechargeable battery in conjunction with a solar power cell to keep the battery charged and at optimal capacity. If there is no light present at the solar cell, the battery alone could continue to power the sensor for up to 5 years.
* Actual range may vary depending on environment.
** Battery life is determined by sensor reporting frequency and other variables.
|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|
|Dimension||3.7 in x 2.32 in x 1.38 in|
|Max Operating Temperature||-40° to 85°C (-40° to 185°F)|
|Device Range||300 - 350 ft. non-line-of-sight device range*|
|Supply Voltage||2.0 - 3.6 V|
|Battery Type||Replaceable 3.6V, 1800mAH (single AA sized)|
|Optimal Battery Operating Temperature||+10°C to +50°C (+50°F to +122°F)|
|Battery Life||Up to 7 Year Battery Life.**|
|Solar Power Option||5 VDC Solar Panel
600 mAH Rechargeable Battery (>2000 Charge Cycles - 80% of Initial Capacity)
Charging Temperature Range: 0° to 45°C (32° to 113°F)
Max Temperature Range: -20° to 60°C (-4° to 140°F)
|Enclosure Material||IP65, NEMA 4X, CE rated, sealed, weatherproof enclosure|
|UL Rating||UL Listed to UL508-4x specifications (File E194432)|
920 MHz Specifications
|Operating Frequency||920 MHz Operating Frequency|