Teledyne 4220 - Manual (Page 71)

4220 Flow Meter
Section 2 Programming
2-43
trols the flow meter remotely, via phone lines and a modem, or
locally with a laptop computer and cable. In any event, if the
sampler pacing definition is controlled by Flowlink, it can only be
changed through Flowlink.
If you select CONDITIONAL for sampler pacing, the following
will appear:
(pH), (TEMPERATURE), (YSI pH), (YSI DO), (YSI CONDUC-
TIVITY) and (YSI TEMP) may also appear. Note that all the con-
ditions shown above are in parentheses. Which ones actually
appear depends on your previous programming selections. At
least one of these options will be available to you.
Pressing the right arrow key may be necessary to bring all
items onto the display, provided they are available for use.
LEVEL will only appear if the flow meter is set up to measure
level or flow.
RAINFALL, D.O., pH, and TEMPERATURE measurement
require the appropriate sensor probe be used with the flow meter.
Remember that only one parameter condition (D.O. or pH) can be
measured by the flow meter at a time, unless you use the YSI 600
Sonde.
RAINFALL can appear if you have a rain gauge attached to the
flow meter.
TEMPERATURE can be measured alone, or with either
parameter.
D. O. and/or pH may not appear on the menu, depending on
selections made in step 1. If you do not see the item you need,
return to step 1, and recheck your programming. If you did not
make the proper selections there, certain menu options will not
appear here, as they would have been locked out.
The YSI 600 conditions of pH, DO, CONDUCTIVITY, and TEM-
PERATURE will only appear on the menu if you have turned
them on in steps 1 and 3.
For any of these conditions, you can set the point at which change
in the selected condition causes the flow meter to send a flow
pulse to the sampler. The following menu will appear:
If you select GREATER THAN, the flow meter will ask you to
enter a maximum value for the selected condition, which if
exceeded, will trigger the flow pulse.
If you select LESS THAN, the flow meter will ask you to enter a
minimum value for the selected condition. If the condition falls
below that value later, the flow meter will send a flow pulse to
the sampler.
If you select RATE OF CHANGE, the flow meter will ask for two
values: one for the condition, and the other for the time interval
over which the change occurs.
CONDITION
• (LEVEL) • • (FLOW RATE) • • (RAINFALL) • • (D. O.) •
CONDITION
• GREATER THAN • • LESS THAN • • RATE OF CHANGE •