Pulse
General Description
The ALTA® Wireless Pulse Counter connects to pulse output devices (water meter, power meter, etc.) directly recording the number of pulses counted.
Key Features
Counts the number of pulses in a given frame, or aggregates pulses in an ongoing accumulation.
Robust filter options:
No filter - Ultra-fast counting, no noise rejection
40 Hz filter - Fast counting, basic noise rejection
4 Hz filter - Slow counting, superior noise rejection
Counts either passive (open/closed switch) and active (up to +15 VDC) pulses.
Capable of counting the positive edge, negative edge, or both edges of a pulse.
Principles of Operation
The ALTA Wireless Pulse Counter counts active or passive pulses generated by common industry systems. The counter includes three software configurable low-pass filter settings (no filter, 40 Hz, and 4 Hz). When one of the filters is on, the pulse counter will filter out any pulses that are shorter than 1 / filter frequency. The sensor will record the number of pulses counted over a user-configurable time interval or Heartbeat. On every Heartbeat, the sensor will report the number of pulses counted to the gateway, making the data available in iMonnit or another approved data service.
The ALTA Pulse Counter can be configured to report urgently if the number of pulses counted in one Heartbeat is greater than specified threshold.
Features of Monnit ALTA Sensors
Wireless range of 2,000+ feet through 18+ walls1
Frequency-Hopping Spread Spectrum (FHSS)
Best-in-class interference immunity
Best-in-class power management for longer battery life2
Encrypt-RF® Security (Diffie-Hellman Key Exchange + Advanced Encryption Standard (AES)-128 Cipher Block Chaining (CBC) for sensor data messages)
Sensor logs 2000 to 4000 readings if the gateway connection is lost (non-volatile flash, persists through power cycling):
10-minute Heartbeats = ~ 22 days
2-hour Heartbeats = ~ 266 days
Automatic over-the-air updates to sensor firmware (future-proof)
Free iMonnit Basic Online Wireless Sensor Monitoring and Notification System to configure sensors, view data, and send alerts via SMS text, email, and voice call
1 Actual range may vary depending on the environment and gateway.
2 Battery life is determined by the sensor reporting frequency and other variables. Other power options are also available
