Omega Engineering LVU-90 warranty Specifications, About Ultrasonic Technology, Step One

Page 2

SPECIFICATIONS

Step One

Range:

3.6" to 6' (9 cm to 1.8 m)

Accuracy:

± .25% of span in air

Resolution:

0.125” (3 mm)

Frequency:

83 kHz (nominal)

Pulse rate:

2 pulses per second

Beam width:

8° conical

Dead band:

3.6” (9 cm)

Supply voltage:

12-36 VDC

Max loop resistance:

600 Ohms @ 36 VDC

Signal output:

4-20 mA, 12-36 VDC

Fail-safe diagnostics: Reverts to 22 mA

 

LED flashing

Temperature rating:

F: -40º to 140º

 

C: -40º to 60º

Temp. compensation: Automatic over entire range

Pressure rating:

30 psi (2 bar) @ 25 °C., derated @ 1.667 psi

 

(0.113 bar) per °C. above 25 °C.

Enclosure rating:

NEMA 4X / IP65

Enclosure material:

Polypropylene, U.L. 94VO

Transducer materials: PVDF

Mounting threads:

3/4” NPT for LVU-91

 

3/4” G for L VU-92

Mounting gasket:

Viton (3/4" G) LVU-92 only

Conduit connection:

1/2” NPT

CE compliance:

EN 50082-2 immunity

 

EN 55011 emission

 

(pending)

 

 

About Ultrasonic Technology:

An ultrasonic sound wave is pulsed five times per second from the base of the transducer. The sound wave reflects against the process medium below and returns to the transducer. The microprocessor based electronics measures the time of flight between the sound gen- eration and receipt, and translates this figure into the distance between the transmitter and process medium below.

 

POWER

(-)

(+)

GND

12-36 VDC

4-20 mA

6’ Range

 

 

 

8° Cone

 

 

 

Radius

 

 

 

 

 

 

 

Range

Radius

Radius

 

Feet

Inches

cm

 

 

 

 

 

1

1 . 2

3 . 1

 

2

2 . 1

5 . 2

 

3

2 . 9

7 . 3

 

4

3 . 7

9 . 5

 

5

4 . 9

11 . 6

 

6

5 . 4

1 3 . 7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Maximum Temperature/Voltage Derating

 

 

 

35

Temperature/Pressure Derating

 

100

Continuous 20 mA Curve

 

 

700

 

 

 

Unacceptable

 

 

 

 

 

 

 

 

30

 

 

 

 

 

 

 

 

 

 

600

Operating Pressure(psi)

 

 

 

Range

AmbientSensorTemperatureC)°(

80

Unacceptable

 

 

 

Max.Series Resistance(Ohms)

25

 

 

 

 

 

Range

 

 

 

500

 

 

 

 

60

 

 

 

 

 

 

20

 

 

 

 

 

 

 

 

 

 

400

Acceptable

 

 

 

 

 

 

 

 

 

 

 

 

40

 

Acceptable

 

 

 

300

15

 

Range

 

 

 

 

 

 

10

 

 

 

 

 

 

 

Range

 

 

 

200

 

 

 

 

20

 

 

 

 

 

 

05

 

 

 

 

 

 

 

 

 

 

100

 

 

 

 

0

 

 

 

 

 

 

00

 

 

 

 

 

 

 

 

 

 

000

-20

00

20

40

12

16

20

24

28

32

36

 

-40

60

 

 

 

 

 

 

 

 

 

Temperature (°C)

Operating Voltage (VDC)

 

Electrical Loading Limits

Unacceptable

Range

Acceptable

Range

18

24

30

36

Supply Volyage (VDC)

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Contents User’s Guide Step One SpecificationsAbout Ultrasonic Technology Safety Precautions WiringWiring to a Typical PLC InstallationWiring to an Omega Continuous Controller LVCN-51 Step FourCalibration Current to Distance Conversion Chart NominalDistance to Current Conversion Chart Nominal General MaintenanceCleaning Procedure Step Eight

LVU-90 specifications

Omega Engineering has long been a leader in providing innovative solutions for temperature and process measurement, and one of its standout products is the LVU-90 Liquid Level Transmitter. This device is designed to offer reliable and accurate liquid level measurement in a variety of industrial applications. The LVU-90 leverages advanced technologies to ensure precision while maintaining versatility across different environments.

One of the main features of the LVU-90 is its non-contact measurement capability. This characteristic allows the transmitter to determine liquid levels without needing to make physical contact with the liquid itself. This is particularly advantageous in applications involving corrosive or hazardous materials, where traditional contact measurement methods may pose risks or lead to deterioration over time. The non-contact design also reduces maintenance requirements, ultimately increasing operational efficiency.

Another notable feature of the LVU-90 is its ability to operate in a wide temperature range. The device is designed to function in both extreme heat and cold, providing versatility for various industrial settings. This robust temperature tolerance ensures that the LVU-90 can be employed in diverse applications, from water and wastewater management to chemical processing and agriculture.

The LVU-90 utilizes advanced ultrasonic technology for its measurement process. By emitting ultrasonic waves from the transmitter, it measures the time taken for the waves to travel to the surface of the liquid and back, allowing for highly accurate level readings. The utilization of this technology minimizes the influence of factors such as temperature or pressure variations, resulting in dependable performance under differing operational conditions.

Additionally, the LVU-90 is equipped with a user-friendly interface that simplifies setup and provides clear diagnostic information. Its integration capabilities allow for seamless connectivity with existing control systems, enabling real-time monitoring and enhancing overall process management.

The LVU-90 also features a durable construction, designed to withstand harsh environments. This robustness ensures longevity and reduces replacement frequency, offering significant cost savings over time. With its combination of cutting-edge technology, ease of use, and resilience, the Omega Engineering LVU-90 Liquid Level Transmitter emerges as a superior choice for industries seeking reliable liquid level measurement solutions.
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