ADS Environmental Services FlowShark QR 775002 A4 - Manual (Page 192)

Analog Input/Output Installation and Configuration 8-5
 Edit the analog input device supported by the FlowShark
monitor as follows, and select OK when complete.
Edit Analog Input Device dialog (FlowShark)
− Entity Select the entity for which to input data
through the analog input device.
− Min Value Enter the reading to correspond to 4 mA.
− Max Value Enter the reading to correspond to 20
mA.
− Resistor Value Enter the nominal value in ohms for
the 4/20 mA circuit.
− Min Input Enter the value to serve as the cutoff value
for the input. If a reading falls below this setting, the
value recorded will reflect this setting.
3. Follow the remainder of the steps listed in Chapter 6 through
Activating the Monitor to fully configure the FlowShark.
4. Determine whether the addition of the ADS equipment will add
too much “load” to the analog signal “loop.” The ADS monitor
adds 250 ohms to the loop. If too much load is added, the
signal will “clip” and cause the data to flat line at a lower level
than the true peak, which will result in understated peak levels
or flows. If only one device is connected to the analog signal,
sufficient current is probably available to drive the ADS input.