Xylem WS700 COMPOSITE/DISCRETE WATER SAMPLER - Manual (Page 8)

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composite samples and is described in detail later in the section
titled “External Trigger Mode”.
12. Bottle Switch: The sample bottle float switch plugs into the control
panel here. For sampling to occur a float switch must be plugged in
and the bottle must not be full. If the Status LED remains lit all the
time, check this connection.
13. Test Pump: Pressing this button tests the operation of the pump.
This button will run the pump regardless of whether the bottle switch
is plugged in or not. The pump runs forward for as long as the
button is held down, then reverses for an equal amount of time or 15
seconds, which ever is less.
VII. Composite Sampling
A composite sample is a series of smaller samples put into the same bottle, thus showing
an “average” sample over time. Set the Interval control to the desired time between
samples (do not select the External Trigger position). Set the Size control to the desired
sample size. Note that the sample size settings are approximate and apply to a head height
of four feet. For heights other than four feet, refer to the chart inside the front of the
sampler.
The sampler starts timing when both of the optional Rain and Water Sensors detect
moisture. If you do not have the optional water sensors or do not need them for your
application, defeat them by plugging one of the two shorting plugs supplied with the sampler
into their jack. If both inputs are defeated, the sampler starts up triggered when the power
switch is turned on. The Status LED starts blinking every 2 seconds once the sampler is
triggered.
The Start Delay timer begins running when the sampler is triggered by the Rain and Water
Sensors and the first sample is taken when the timer expires. If the Delay control is set to
zero, sampling begins immediately. The delay timer only applies to the first sample taken,
except as described later in the section titled “External Trigger Mode”. At the end of each
sample, the pump reverses for 15 seconds.