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12
MN300610 Rev C3
Wiring
Step Six
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.
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.
VOLTAGE OUTPUT
EchoSonic® can be used as a 0 to 5 or 0 to 10 VDC output device. A resistor will need to be added to the
circuit to enable a voltage output (refer to the wiring diagram below).
0-5 VDC output
o
Add a 250 Ohm resistor
o
Actual output will be 0.8 to 5 VDC
0-10 VDC output
o
Add a 500 Ohm resistor
o
Actual output will be 2 to 10 VDC
