C44 Wind Alarm For Richards C5 Anemometers

The C44 Wind Speed Alarm can be used with all Richards C5 Type Anemometers. The alarms have an adjustable time delay from one second to two hours preventing nuisance tripping from wind speed gusts. There are four user selectable time delay modes provided: Delay On, Delay Off, Both and One Shot. In One Shot time delay mode the relay closes for the selected time period when the alarm condition occurs and opens at the end of the time delay period. The time delay period for each alarm is independently adjustable.

The current wind speed is displayed with user selectable units of miles per hour (MPH), meters per second (M/S) or kilometers per hour (KPH). The wind speed measurement timing is crystal controlled for high accuracy.

The two alarms provided with the C44 are both single pole double throw (SPDT) relays. The alarm is activated when the wind speed exceeds the closure set point. The relay closes when the time delay is satisfied.

The wind alarm remains activated until the wind speed drops below the opening set point. The relay opens when the time delay is satisfied. All set points and configuration selections are retained in FLASH memory even when the operating power has been removed.

The C44 Wind Alarm has a security code feature which resists tampering with the set points or control configuration by unauthorized personnel.

The control can be ordered for operation from 120 VAC, 230 VAC, 12 VDC, or 24 VDC electrical power. All inputs are protected from damage by high voltage transients with metal oxide varistors.

If an open or short circuit is detected in the C5 Anemometer circuit, a message is flashed on the LCD screen.

The C44 Wind Alarm uses a microcontroller to measure the frequency of the C5 Anemometer signal which is then scaled to the units of wind speed selected by the user. At power up and during periods of no wind the control checks the C5 Anemometer circut for continuity by measuring the circuit resistance.

The terminal block of the C44 Wind Alarm can be unplugged to facilitate wiring.