Description
Description
Manuals & Software
Lightning Detector LD–1TM is a Modbus sensor that can be connected to Dyacon weather station control modules and other automation systems, such as PLCs.
The sensor provides strike count, estimated distance of the last strike (0 to 40 km/24 miles), and several other parameters through the Modbus connection.
LD–1 is designed for industrial users, weather researchers, safety management applications, and system integrators where advisory instruments may be helpful in making safety and management decisions.
Feature Summary
- Modbus RTU slave
- Lightning distance estimate
- Strike count
- Cloud-to-cloud detection
- Cloud-to-ground detection
- Customizable thresholds
- Modbus RTU slave
- 5 to 24 VDC input
- Low power: 1.6 mAmp
- Easy mounting
- Made in USA
Key Features
Detection
LD-1 detects lightning by analyzing electromagnetic disturbances. The processing chip analyzes the shape and energy level of detected signals to identify characteristic lightning patterns.
LD-1 contains several settings so that users may tune the sensor performance for their environment.
Construction
The LD-1 enclosure and mounting fitting are made of machined Delrin®.
Outdoor-rated cable length may be configurable at order time.
Data Connection
Power and data are provided through a 4-wire connection. LD-1 uses an RS-485 (Modbus RTU slave) data connection that allows for long cable runs.
Firmware updates may be done through the same data cable.
Mounting
The LD-1 uses a female 1” NPT pipe thread to provide a versatile, low-cost, and convenient mounting system that does not require proprietary hardware and can be readily installed in a variety of locations.
Accessories
LD-1 can be used with Dyacon weather station controllers to provide alert SMS text messages and email alerts when lightning is detected.
Specifications
| DETECTION | |
|---|---|
| Sensor | AMS AS3935 |
| Stormhead Range Estimate | 15 values from 0 km to 40 km (0 miles to 24 miles) |
| Consecutive Strike Span | 1 s |
| Detection Efficiency* | Approximately 40% |
| Response Time | <1 s |
| DATA | |
|---|---|
| Protcol | Modbus slave with configurable data rate and address. |
| Detection Parameters | Strike Count Since Last Read
Noise Count Since Last Read Disturber Count Since Last Read Distance Estimation Energy of Last Strike (relative) Strike Count 10 minute Strike Count 30 minute Strike Count 60 minute Noise Count 60 minute Disturber Count 60 minute |
| Configuration Parameters | Front-end Amplifier Gain
Noise Floor Level Watchdog Threshold Minimum Number Lightning Strikes Spike Rejection Level |
*Detection efficiency is dependent on the use environment and the level of ambient, man-made electromagnetic noise. Detection thresholds are user configurable and may be increased to reduce the false detection rate at industrial environments, but this will also impact lightning detection.
| ELECTRICAL | |
|---|---|
| Power Input | 5 VDC to 24 VDC |
| Current | 1.6 mAavg at 12 VDC** |
| Circuit Protection | Gas discharge tube and transient suppression on signal and power wires. |
| MECHANICAL | |
|---|---|
| Material | White Delrin enclosure |
| Diameter x Length | 4 cm x 12.7 cm (1.6” x 5”)
Not including optional mounting pipe. |
| Cable | 4 conductor, 24 AWG, stranded
Foil shield w/ drain wire Outdoor rated cable |
| Weight | 226 g (8 oz)
Not including optional mounting pipe. |
| ENVIRONMENTAL | |
|---|---|
| Operating Temperature | -40°C to 80°C |
| Storage Temperature | -40°C to 80°C |
| Operating Humidity | 0% to 100% rH |
** Continuous full run mode, reading 200 range registers once per second.
