Omega WMS-T-AL - Manual (Page 5)

• When audible, Alarm 1 will produce a beep at 400 ms intervals while Alarm 2 will
beep at 200 ms intervals.
• When the alarms are in the audible mode and both alarms are active, Alarm 2 will
have precedence.
• The alarm can be put into the silent mode by moving Switch 4 to the off position on
the switch block at the bottom of the circuit board. It is necessary to re-boot the
WMS-T-AL after moving the switch in order to in able the change.
Units of Measure
It is possible to display temperature values in either °F or °C units. Selection of the unit system
to be used is done with Switch 3 on the switch block at the bottom of the circuit board. The Off
position is for °F and the On position is for °C. It is necessary to re-boot the WMS-T-AL after
moving the switch in order to in able the change.
Temperature Sensor Placement
The validity of temperature signals can be compromised by the choice of the location of the
anemometer with respect to the surrounding terrain. Placement of the temperature sensor
should follow standards established by agencies such as the World Meteorological Organization
(WMO) and the National Oceanic and Atmospheric Administration’s (NOAA) National
Weather Service (NWS).
Temperature Inputs
The temperature inputs are P17, TMP1 and P18, TMP2.
Power Supply
Use a 12V AC or DC power supply on the ACin/DCin and ACin/DCgnd terminals.
Earth Ground
Attach a wire of at least 18 AWG or larger to the EARTH terminal. The other end of this wire
must be attached to a metal water pipe or a copper-ground-rod. This is the ground path for all
of the lightning and electrostatic protection devices incorporated on the WMS-T-AL circuit
board. It is very important that this earth ground connection is made! Your WARRANTY may
be voided if the earth ground connection is not made.
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