HDI-Hail Sensor

( 0 Reviews )

Make: Sommer Model: HDI

✅ Maintenance-free and lightweight, corrosion free, UV/Ozone stable, non-obstructable.

✅ Measurand : Hailstones.

✅ Sensor Type : HDI Sensor.

✅ Signal Output : Analog Output, SDI-12 Yes, V1.3, RS-232, Modbus RTU (RS485).

✅ Supplied With : Signal converter, RS-232-ModbusRTU adapter and Extension cable in custom length per meter.

SKU: Sommer-HDI-Hail Sensor

Ask for Quotation

Description

EXTREMELY ROBUST AND RELIABLE ACOUSTIC HAIL SENSOR

The HDI sensor measures the impact of individual hailstones on a stainless-steel disc using a special acoustic detector, signal processing and calculation. The sensing surface is a 200 mm diameter omnidirectional head, containing the electronics of the system.
The HDI can detect hailstones between 0.5 and 7.5 cm and up to 25 hits per second. Comparable to so-called disdrometry, it can distinguish between 15 size-classes. The size distribution is reported as percentage of all detected impacts according to classification table.

HAIL SENSOR HDI

The hail sensor HDI is shipped with a robust, stainless steel mounting arm. With the included USB-converter the sensor can be directly connected to a PC and configured for your needs.

FIELDS OF APPLICATION

The HDI is the sensor of choice wherever damage by hail is of concern: farming on fields and in greenhouses, infrastructure like facades, roofs and soloar panels or vehicles.

Details & Specifications

Make	Sommer
Model	HDI
General Specification	:-
Weight	• 3.2 kg without mounting kit • 5.4 kg with mounting kit
Dimension	260 mm x 450 mm x 200 mm (with mounting kit)
Precipitation Type	Solid only (hail).
Outputs	• Analog Pulse and continuous (and persistent) voltages, 0-2.5V or 0-5V • SDI-12 Yes, V1.3 (distrometer output via extended SDI-12 commands) • RS-232 Yes • Modbus RTU (RS485) Yes (Note: requires the Modbus adapter accessory)
Collector Area	Measuring surface: 200 mm outer diameter disc
Measurement Range	• Sensitivity @voltage range +2.5V: [100 mV/(hits/s)] i.e. +2.5V corresponds to 25 hits/s • Sensitivity @voltage range +5V: [200 mV/(hits/s)] i.e. +5V corresponds to 25 hits/s
Power Supply	• Voltage : 6 V to 30 V DC (9.6 V and 16 V DC in case of powering through the SDI-12 terminals) • Current : < 1 mA in stand-by mode and 20 mA max in acquisition mode. • For a typical nominal duty-cycle of 10%: 2.1 mA (20 mA for duty-cycle of 100%).
Accuracy	For a given controlled elastic momentum impact (such as spheres of equal diameter, density, Young modulus, falling speed and incidence angle) , the response of the sensor varies typically by ± 10%, depending on the spatial position of the impact on the disc and on the sensor (± 10% variability between two sensors).
Operating Environment	Temperature range : -40°C to +80°C Relative humidity : 0 to 100%
Protection Level	IP68, survive to 3 m immersion in salt water