Davis WeatherLink for Alarm Output Add. Manuel d'utilisateur

1WeatherLink® for Alarm OutputAddendumIntroductionThis Streaming Data Logger is designed to provide an electrical interface between a Vantage Pro2™ ,

10•A Less Than or = (or low alarm) checks whether the current value is less than or equal to the value entered.•A Between alarm checks to see if the c

11•A True or False check is used for the Low Transmitter and Repeater Battery Status parameters, which are not numeric. This check type can also be us

12For guidance on how to use this alarm, it may be best to consult histori-cal weather data from WeatherLink plot data (or other sources) to deter-min

13“Greater Than or =” or “Less Than or =” difference. Make sure the equa-tion you create results in the check that you want. Some examples are provide

14• Missing: This is used to check whether a given parameter is missing or invalid.Finally, choose your Logical Grouping (whether you want to test thi

15the previous settings. Thus, you may notice the program takes longer times than others to set values.Notes on parameters:• Barometer Trend parameter

Product Numbers: 6544 WeatherLink for Alarm Output Document Number: 07395.219 Rev. D 10/10/11 ©2011 Davis Instruments Corp. All rights reserved. Van

2• (Optional) Relays: You may need to obtain relays in order to switch equipment at voltages higher than 28 Volts or power levels above 10 Watts. Not

3Logger TypeThe software indicates the logger type and firmware revision level of the streaming data logger in the logger type box.Time Out PeriodThe

4can only enter this dialog box when no alarms are set. This prevents you from hiding a parameter that is set as an alarm condition.)Selecting Vantage

5and Humidity sensors because they always appear under “Outside Temper-ature” and “Outside Humidity” in the parameter pick list.UnitsNext, select the

6You may select from the following settings:Temperature:Fahrenheit (°F) or Celsius (°C)Note: Wind chill, dew point, degree-days, and temperature ind

7circuit mode. To utilize this function effectively, you will need to connect a device to the appropriate output so that you can tell when it is turni

8AdvancedNote: This description of this dialog box is valid for Streaming Data Utility versions 1.2.0 included with WeatherLink 5.7.1 or later.Delay

9Circuit BehaviorThis command determines whether the circuit stays open or closed when no alarms are active. The opposite behavior occurs for an activ