YSI 6500 Environmental Process Monitor - Manual (Page 35)

System Setup Section 3
If you do not choose to use the 6500 4-20 mA function, proceed to the next section. To enter the
4-20 menu press Enter after highlighting “4-20 mA”, then choose “Configure 4-20mA” and
press Enter again.
If you will be transmitting data from the sonde via your 6500 to a SCADA system or other analog
data collection device in the form of 4-20 mA signals, you will need to set the limits of this
output for any or all of the eight available channels. To do so, highlight the “4-20mA” selection
and press Enter. The following display will appear.
Now highlight the desired channel and press Enter to activate the display of the specific channel
of interest. Channel 1 is shown below.
First, choose the parameter which will be associated with the selected 4-20 mA channel by
highlighting the “Para:” selection and pressing Enter to display a list of available parameters.
Using the up and down arrow keys, select the desired parameter and then press Enter to confirm
the selection (temperature in degrees Celsius in the example).
Next, highlight the “4mA level=“ selection and press Enter. Using the arrow keys, enter the
desired value for the low limit of the range and press Enter to confirm the value (0 C in the
example). Press Esc to return to the above menu.
Finally, highlight the “20mA level=“ selection and enter the desired value for the high limit of the
range using the arrow keys. Press Enter to confirm the value (30 C in the example).
Other 4-20 mA channels can be activated (and then set up) by scrolling horizontally in the above
menu using the right and left arrow keys. Alternatively, you may return to the Channel menu,
highlight the desired channel number (see below), and set up the limits as described above.
Channel 1 Set Channels 1-4 Set
YSI Incorporated 6500 Environmental Process Monitor 31