Flowline DL34 EchoPod - Manual (Page 19)

31 MAR 11 EchoPod 19 of 29
Rev B MN204210
White & Green
White and Green leads are reserved for use with WebCal and should not be connected during usage
in the application. These wires should not be connected to WebCal while power is supplied from
any source other than the LI99 series Fob.
Never allow the white or green wires to touch any power supply.
Blue, Orange, Yellow & Purple
Blue, Orange, Yellow & Purple wires are the relay contacts (normally open) from each of the relays
respectively. Relay selection is determined by the configuration in WebCal.
Brown
The Brown wire is the common for all the relays.
General notes for electrical connections, usage and safety:

Where personal safety or significant property damage can occur due to a spill, the
installation must have a redundant backup safety system installed.

Wiring should always be completed by a licensed electrician.

Supply voltage should never exceed 28 VDC.

Always use stepper relays between the sensor and external loads. For DC circuits use a
catch diode such as 1N4148, shown on previous page.

Protect the sensor from excessive electrical spikes by isolating the power, whenever
possible.

The sensor materials must be Chemically compatible with the liquids to be measured.

Design a fail-safe system for possible sensor and/or power failure.

Never use the sensor in environments classified as Hazardous.
4-20 mA output only
EchoPod can be used as a loop powered 4-20 mA only device (refer to the wiring diagram below).
When using WebCal, under Number of Pumps, select 4-20mA Transmitter Only to simplify the
configuration in WebCal.