Product overview
The CZI SC99 measures tree diameter over the growth cycle, supporting repeated forestry measurements and remote collection of growth data. Its physical design combines a retractable measuring tape that expands as the tree grows with a lightweight, 180g instrument body. A clip-lock attachment supports quick installation and removal, while a telescopic structure permits height adjustment for terrain or environmental factors. IP65 protection supports outdoor deployment, and an external amorphous silicon panel uses ULP low-light charging technology to provide power under low-light conditions.
The communications architecture combines a built-in 4G wireless network card and LoRa module with relay-based collection. A stationary LoRa relay station receives data within a 1.4km diameter; where network signals are unavailable, a drone carrying a payload relay station collects data at stated vertical and horizontal distances of 100m and 300m. The instrument wakes at preset intervals to measure and transmit, then returns to sleep. The associated data platform provides map-based point selection, real-time tree growth viewing and analysis, and automatic trend charts.
Specifications
| Specification | Value & conditions |
|---|---|
| Product identity and purpose | CZI SC99 tree diameter measuring instrument for full growth cycle monitoring, periodic data collection and long-distance data transmission in forestry surveys and planning. |
| Mass | 180g. |
| Growth-following measurement | Retractable measuring tape expands with tree growth for real-time tree data monitoring. |
| Wireless communications hardware | Built-in 4G wireless network card and wireless LoRa module for long-distance data transmission. |
| Telescopic height adjustment | Telescopic structure provides height adjustment.Height adjusted according to terrain or environmental factors. |
| Attachment mechanism | Clip-lock design for quick installation and removal. |
| Stationary relay reception coverage | Data reception within a 1.4km diameter.Using LoRa spread spectrum technology with a stationary relay station. |
| Airborne data collection | Drone-carried payload relay station collects instrument data.When network signals are unavailable; drone carries the payload relay station. |
| Airborne collection distances | Vertical distance: 100m; horizontal distance: 300m.Data collection using the drone-carried payload relay station. |
| Ingress protection | IP65-rated dust and water resistance for common outdoor weather and environmental changes. |
| Charging hardware and technology | External amorphous silicon panel with ULP low-light charging technology.Low-light conditions. |
| Automatic collection and sleep cycle | Instrument wakes to collect and transmit data, then automatically returns to sleep mode to reduce energy consumption.At preset intervals. |
| Map-based monitoring | Map-based point selection with real-time viewing and analysis of tree growth data.Using the data collection platform. |
| Trend chart generation | Automatic conversion of collected data into trend charts for analysis of tree growth patterns.Using collected tree growth data. |
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