SND Snow Drift Sensor

Voltage outputs

Continuous analog voltage or pulse analog voltage, user selectable +0 to +2.5V or

+0 to +5V are available. Pulse threshold, integrator timeout and duration are also user selectable. The continuous analog voltage persists on the outputs so that output voltages can be read at any time.

Wind speed scaling

Sensitivity @voltage range +2.5V: [10 mV/(km/h)] i.e. +2.5V corresponds to 250 km/h

Sensitivity @voltage range +5V: [20 mV/(km/h)] i.e. +5V corresponds to 250 km/h

Particles flux scaling

Sensitivity @voltage range +2.5V: [10 mV/(g/m2/s)] i.e. +2.5V corresponds to 250 g/m2/s

Sensitivity @voltage range +5V: [20 mV/(g/m2/s)] i.e. +5V corresponds to 250 g/m2/s

Supply

Ratings

Voltage

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%).

Mode

Description

Analog

Pulse and continuous (and persistent) voltages, 0-2.5V or 0-5V

SDI-12

Yes

RS-232 TTL

Yes

Modbus RTU (RS485)

Yes (Note: requires the Modbus adapter accessory)

Material

Stainless steel and aluminium Ematal anodized (breakdown voltage > 40 V/μm)

Weight

5 kg (including mounting kit)

Dimension (H x W x D)

1040 mm x 874 mm x 32 mm (with mounting kit)

Installation

Universal mounting kit provided