Omega Engineering LVU-90 warranty Safety Precautions, About this Manual, Wiring and Electrical

SAFETY PRECAUTIONS

Step Two

About this Manual:

PLEASE READ THE ENTIRE MANUAL PRIOR TO INSTALLING OR USING THIS PRODUCT. This manual includes information on the LVU-90 series continuous non-contact level transmitter from OMEGA. Please refer to the part number located on the sensor label to verify the exact model which you have purchased.

User’s Responsibility for Safety:

OMEGA manufactures a wide range of liquid level sensors and technologies. While each of these sensors is designed to operate in a wide variety of applications, it is the user’s responsibility to select a sensor model that is appropriate for the application, install it properly, perform tests of the installed system, and maintain all components. The failure to do so could result in property damage or serious injury.

Proper Installation and Handling:

Because this is an electrically operated device, only properly- trained staff should install and/or repair this product. Use a proper sealant with all installations. Note: Always install the 3/4” V iton gasket with the LVU-92. The G threaded version will not seal unless the gasket is installed properly. Never overtighten the trans- mitter within the fitting. Always check for leaks prior to system start-up.

Wiring and Electrical:

A supply voltage of 12-36 VDC is used to power the transmitter. The sensor systems should never exceed a maximum of 36 volts DC. Electrical wiring of the sensor should be performed in accor- dance with all applicable national, state, and local codes.

Material Compatibility:

The enclosure is made of Polypropylene (PP). The transducer is made of Polyvinylidene Fluoride (PVDF). Make sure that the model which you have selected is chemically compatible with the application liquids it will contact.

Enclosure:

While the transmitter housing is liquid-resistant when installed properly, it is not designed to be immersed. It should be mounted in such a way that the enclosure and diaphragm do not come into contact with fluid.

Make a Fail-Safe System:

Design a fail-safe system that accommodates the possibility of transmitter or power failure. In critical applications, OMEGA rec- ommends the use of redundant backup systems and alarms in addi- tion to the primary system.

Flammable, Explosive and Hazardous Applications:

The LVU-90 series transmitter systems should not be used within flammable or explosive applications.

Warning

Always install the 3/4" Viton gasket with the LVU-92. The LVU- 92 G threaded version will not seal unless the gasket is installed properly.

WIRING

Step Three

Wiring to Terminal:

The LVU-90 arrives from the factory pre-calibrated and pre-assem- bled. Use the following instructions below for wiring to the LVU-90.

1.First, remove the cap of the transmitter:

2.Look for the terminal block with two terminals.

	POWER
(-)	(+)
GND	12-36 VDC
4-20 mA

3.Remove the terminal block to wire the LVU-90. The terminal to the right is positive and the terminal to the left is negative.

4.When finished attaching the wires, assemble the LVU-90 using steps 1 - 3 in reverse.