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.
* Actual range may vary depending on environment.
** Battery life is determined by sensor reporting frequency and other variables.
Accelerometer Specifications |
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Speed Measurement Range | 0 to 25.5 mm/s |
Speed Measurement Resolution | 0.1 mm/s |
Frequency Measurement Range | 10 to 200 Hz |
Frequency Measurement Resolution | 1 Hz |
Vibration Intensity Threshold Range | 0 to 1.701 g |
Vibration Intensity Threshold Resolution | 0.063 g |
Weight | 4.7 oz. |
Variation Specifications |
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Security | Encrypt-RF® (256-bit key exchange and AES-128 CTR) |
ALTA Industrial Specifications |
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Supply Voltage | 2.0 - 3.8 VDC |
Battery Type | Replaceable 3.6V, 1800mAH (single AA sized) |
Battery Life | At 1 hour heartbeat setting, battery will last up to 10 years.** |
Max Operating Temperature | -40° to 85°C (-40° to 185°F) |
Optimal Battery Operating Temperature | +10°C to +50°C (+50°F to +122°F) |
Solar Power Option | 3.0 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) |
Dimension | 3.7 in x 2.32 in x 1.38 in |
ALTA 900 MHz Specifications |
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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) |