Omega manual Sensor Installation, WMS-16 Module Setup, Wind Speed and Direction

Sensor Installation

Install the sensors in their chosen locations, bearing in mind the installation considerations noted earlier. Run cables from the sensors to the control module location, with no cable exceeding the maximum allowable length listed in Table 1.

When the sensors have been installed and the cables run, connect and test them as described in the following sections. Refer to Figure 1 for connection locations on the control module’s terminal strip.

Table 1: Maximum Sensor Cable Lengths

Sensor	Max. Cable Length
Wind	250	(76m)
T/RH	250	(76m)
Rain	900	(275m)
Barometer	10’	(3m)
Solar Radiation	100	(33m)

WMS-16 Module Setup

The WMS-16 Module has been configured at the Omega factory to work with the following sensors:

1.Wind speed and Direction 2.Barometer

3.Temperature and Relative Humidity 4.Rain Gauge

To verify the sensor setup press “Esc” to go to the main menu. Then select item 1. Station setup. From the Setup Menu select

6.Add or remove sensors. Press “Y” to continue. The sensor configuration page will appear showing all of the presently enabled sensors. It shows the sensor models and calibration factors.

Omega WMS-16 Modular Weather Station

© Omega 2000

Sensor Configuration

Sensor Type	Model	Input	Calibration
1.Wind Speed	WMS-01/02	P1
2.Precipitation	All Models	P3	0.0100
3.Pressure	WMS16-BP	A2
4.Humidity	225-050Y(U)/40 A4
WMS-16 Weather Station Operator’s Manual			5

5.Temperature	WMS-16T	A5
6.Temperature	WMS-16T	A6
7.Wind Direction	WMS-02	A7

Add sensor [A], delete sensor [D], or quit [Q]:

The instructions in Appendix 1 direct you through the enabling procedure for each type of sensor should any sensor that you plan to use not be enabled.

Wind Speed and Direction

Wire the wind sensor’s signal cable into the terminal strip on the control module’s rear panel as shown in Figure 1. Call up the main screen (Figure 3.) on the display terminal by pressing “Esc” for main menu. Press “2” for Current Observations at the main menu. Then press “1” for observation display (Figure 4).

Turn the Anemometer cups by hand and note the wind speed displayed on the screen. This value should change as you spin the cups.

Turn the wind vane so that the tip is aligned with the two vertically positioned set screws on the base of the sensor. The wind direction shown on the screen should indicate North (0°). Turn the vane in increments around the full 360°, noting the change in the wind direction readings. These should agree with the present position of the vane.

© Omega 2000

Main Menu

1.Station setup

2.Current observations

3.Display log by hours

4.Display log by days

5.Data download

6.Clear logging memory

Enter your selection (1-6):

Figure 3 Main Screen

Barometric Pressure Module

Wire the three wires of the barometric pressure module into the terminal strip on the WMS-16 module as shown in Figure 1.

Since pressure varies with elevation, the barometric pressure sensor must be adjusted to read correctly at the elevations at which it is installed. This is done using the offset adjustment screw located on the side of the barometric pressure module.