the black lever. The black lever can be lifted with a finger, or small screwdriver inserted in
the slot, for wire removal.
Each of these positions will correspond to an individual sensor name assigned when you
configure the Receiver Module. If soil temperature compensation is desired, the 950T-TW
configuration must be used on each transmitter. If ambient air temperature is being
measured, the 950T-TW would also be used but the mode switch positions vary by sensor
selection. Temperature sensors will always connect to Terminal 1.
WATERMARK sensors have one smooth wire and one wire with a small ridge running
the length of the wire. Unlike with other WATERMARK reading devices, sensor wire
polarity must be observed when wiring the sensor to the 950T Field Transmitter.
The wires with the ridge always connect to the ground terminals. There are two
ground terminals. Only a single wire should be placed in each terminal to ensure a good
connection. Multiple ground wires should be spliced together and then a single wire run to
the terminal, as shown in Figure 1.
PROGRAMMING AND ADDRESSING FIELD TRANSMITTERS:
Field Transmitters need to be programmed for the sensor combinations attached and
individually addressed, as well as addressed to a specific receiver unit. This programming is
done by setting the positions of two different DIP switches on the circuit board of the transmitter.
Diagrams on the following pages illustrate the location and switch positions as described in the
instructions. On-screen instruction is also provided in the WaterGraph software program as you
go through the setup process on the computer to configure your system.
PROGRAMMING THE SENSOR SELECTIONS:
Programming the sensor selection is done by selecting from among several preset
choices of sensor combinations. The selections are made by switching the smaller four
position DIP Switch to correspond to the choices as illustrated. A reading interval does not
need to be selected. The unique design of the Wireless Monitor system only records sensor
readings when they have changed, thus eliminating the recording of unnecessary readings
and reducing file size and downloading time. Use the SETUP function in WaterGraph to
create individual sensor names that will be referenced in the graph legend for easy
identification. These labels will only apply when downloaded to the same computer that was
used to launch the Monitor. The settings are stored in a settings file that can be moved to
another computer to retain the sensor labels, if desired.
ADDRESSING THE FIELD TRANSMITTERS:
Prior to installing the equipment in the field, the Field Transmitter units need to be
programmed for the sensors to be read and addressed to communicate with the proper
Receiver. This is done by setting the positions of DIP switches located on the circuit board
of the Field Transmitter unit.
The larger, seven position, DIP switch is used to address the Field Transmitter and also
select the Receiver unit it will communicate with. The first four positions will address the
transmitter. The last three positions on the right will set the receiver it is to communicate with.
Each transmitter must have a unique address, so the first four positions on the left cannot
be the same among all the transmitters being used per receiver. However, the receiver
selection must be the same among all the transmitters reporting to it. So the first four
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