ALTA Vibration Meters use an accelerometer to measure g-force on 3 axis and then determine speed and frequency. They can be set to only capture when a vibration occurs and sleep when no vibrations are present, or they can be set to measure at a given assessment interval regardless of whether a vibration has occurred. If set to always measure, the sensitivity can be further adjusted to filter out noise. The Vibration Meter will also report the duty cycle, or how long the sensor was measuring vibrations throughout the heartbeat.
ALTA Vibration Meters use an accelerometer to measure g-force on 3 axis and then determine speed and frequency. They can be set to only capture when a vibration occurs and sleep when no vibrations are present, or they can be set to measure at a given assessment interval regardless of whether a vibration has occurred. If set to always measure, the sensitivity can be further adjusted to filter out noise. 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.
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.
* Actual range may vary depending on environment.
** Battery life is determined by sensor reporting frequency and other variables.
Accelerometer Specifications |
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| Current Consumption | 6 µA (accelerometer listening for vibrations) 0.7 µA (sleep mode) 2mA (radio idle/off mode) 2mA (measurement mode) 25mA (radio RX mode) 35mA (radio TX mode) |
| Speed Measurement Range | 0 to 25.5 mm/s |
| Speed Measurement Resolution | 0.1 mm/s |
| Frequency Measurement Range | 0 to 200 Hz |
| Frequency Measurement Resolution | 3.125 Hz rounded down to nearest 1 Hz |
ALTA AA Specifications |
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| 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 |
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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) |
