4230 Flow Meter
Section 2 Programming
2-8
outlet and have an opening in the face that is either round or tri-
angular. The 4230 reads the upstream level (the water backs up
behind the insert) and calculates the flow through the insert
from this measured level.
2.5.3 Adjust Level,
Parameters
Adjust Level, Parameters calibrates the sensors that provide the
flow meter with level and other information. In this step you set
the level in the flow stream. First you measure the level, as accu-
rately as possible. Then you enter this value with the numeric
keys. Accuracy is important. This measurement provides the
basis for all subsequent flow calculations in the flow
meter.
The flow meter also has an input port for measurements other
than level. This is the Parameter Port. Here you can sense such
variables in the stream as temperature, pH (the acidity or alka-
linity of a solution) and D.O. (dissolved oxygen) in the flow
stream. You can have either pH with temperature, D.O. with
temperature, or temperature alone. The port is not dedicated to a
particular sensor, except through programming. You can change
the sensor. For example, you can change from a pH probe to a
D.O. sensor if you change the programming. Selection of either
parameter will keep the other from appearing later on the
menus. Note, however, that it is possible to measure several dif-
ferent stream conditions including pH and D.O. at the same time
with the YSI 600 Sonde.
The YSI 600 Sonde – The YSI 600 Sonde is a multi-purpose,
water quality measurement device. It is intended for use in
research, assessment, and regulatory compliance. The sonde
attaches to the modified RAIN GAUGE connector on the 4230.
Flow meters having only a 4-pin rain gauge connector will not
support the YSI Sonde. If you wish to upgrade your flow meter to
use this system, contact the factory. Note that you can have both
the YSI 600 Sonde and the Rain Gauge connected to the flow
meter at the same time by using a special Y-connect cable.
The YSI 600 can measure the following water qualities: dis-
solved oxygen (D.O.), conductivity, temperature, and pH.
Conductivity measurements made by the sonde can be used to
calculate specific conductivity, salinity, and total dissolved
solids. A brief description and specifications for the YSI 600 are
printed in Section 4 (Accessories). You may also contact the
factory or your Isco representative. More information on the
sonde is found in the YSI 600 Manual, shipped with each YSI 600
Sonde.
To Next Page
Loading...
