JDC Electronic SA Skywatch WWS User Manual

Us gb

background image


Wind Warning System

Instructions for use

This instrument was developed for protecting persons and properties that may be subject to strong winds. It consists of 2 parts.

A display unit of the wind force, with 4 programmable warning thresholds.

A multidirectional turbine (wind sensor) enabling measurement of the wind in the horizontal plane and in the vertical a

well (turbulence behind objects). The turbine sends its signal magnetically to a transducer located at the end of the cable
connected to the display. This transmission system simplifies the installation process.

Kit 1: includes only the visual and acoustic alarms.
Kit 2: has 4 relays that can be assigned to the different alarms.
Kit 3: corresponds to Kit 2 in a waterproof case with an external 240 V power supply.

The SKYWATCH WWS operates from two 1.5 V batteries of type LR6/AA/AM3 (sufficient for over 2 years without replacement)
and equally well from an external supply of 6 to 30 VDC

(cigar lighter socket, mains power etc.). When an AC-DC adapter

is connected, the batteries are disconnected. If the power fails, the batteries automatically take over.


Install the display housing with the fixing clamp, sheltered from the rain and from excessive humidity.


Install the turbine with the aid of the aluminium bracket, in an open location and sufficiently far from any wall or any other


obstacle to the wind, to ensure the greatest accuracy for the measurements. (See pictures on www.jdc.ch)
Connect the cable to the housing.


Install the cable up to the turbine.


Position the transducer on the end of the cable close to the impeller, and preferably perpendicular to its axis of rotation.



SKYWATCH WWS always displays the instantaneous wind speed on the top line of the display.

Before an alarm:
The middle line can display the values of alarms 1 and 2.
The bottom line can display the values of alarms 3 and 4.
To switch from displaying the even-numbered alarms (2 and 4) to the odd-numbered alarms (1 and 3),
press for 2 seconds on


(even) or on


During an alarm:
An alarm becomes active 3 seconds after the threshold is passed. The alarms are activated and the symbol



When the alarm is activated, the LED for the corresponding line flashes. The acoustic signal sounds for 1 minute. In the case
where the active alarms are displayed on the same line, the display switches between the alarms. If the other alarms are not
active, the display shows



To acknowledge the alarms, press the button for 2 seconds.

If the ambient temperature is positive, the display flashes during an alarm.
If the ambient temperature is between 0°C and -10°C, the display no longer flashes but if 2 alarms are active on the same line,
the display switches from one alarm to the other every 5 seconds.
If the ambient temperature is lower than -10°C, the display does not flash and the switching occurs every 10 seconds when 2
alarms are active.

After an alarm:
The symbol


of the corresponding line flashes and the alarm’s extreme value is displayed. If 2 alarms have been activated

on the same line, use the buttons



to switch from one to the other.


In the following example, two alarms will be activated in succession: alarm 1 with a rising edge, and then alarm 2 with a falling
edge. After the second alarm the two extreme alarm values are displayed alternately on the same display line. Once the activation
times have passed, displaying these alarm values requires use of the buttons



. To return to normal operation, the alarms

must be acknowledged with the button .








1 2