Rain Master Irrigation Systems
Weather Station Manual
Page 35
5.3 Verification of ET Tracker Electronics
This procedure provides the necessary steps to check and verify the operation of the
Evolution DX2 Controller ET Tracker input. This process simulates the incoming pulses
(+ 8 volts) from an ET Tracker, displaying the results on the Evolution DX2 controller ET
display screen.
Step 1
Disconnect the two wires from the Sensor Terminal at terminals Input 2
( + ) and Input 2 ( - ). Connect a short wire (14 - 12 AWG) in each of
the Input 2 terminals.
Step 2
Observe the controller ET display screen and note the present ET
value for today. (Refer to the Reading ET Values at the Evolution DX2
Controller)
Step 3
Press the QUIT key to return to the main display screen. (This is
necessary to allow the controller to update the ET value information.)
Step 4
At the Sensor Terminal board, touch the two wires together
momentarily 2 or 3 times. (An ET reading of .01” inches should be
recorded each time the wires make contact.)
Step 5
Re-check the ET values on the Evolution DX2 Controller ET display
screen. Verify that the readings have increased .01” (1/100 inch) for
each time the wires were shorted.
Step 6
This ends of ET Data Checkout procedure. If the ET value does not
increase each time the wires are shorted, check connection cables as
follows:
From To
Description
Sensor Terminal Bd.
Sensor board
12”, 25 conductor flat ribbon cable
Sensor board
Main board
2”, 26 conductor flat ribbon cable
If this checks out OK, the Sensor Terminal board may be defective. Contact the factory
for a replacement.
Summary of Contents for ET Tracker
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