Xi'an Xihong Automation Equipment Co., Ltd
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FB3351LT capacitive flange liquid level transmitter | FB3351LT liquid level transmitter | FB3351LT
★ Overview FB3351LT level transmitter is a field transmitter directly installed on pipelines or containers
Product details

★ Overview

FB3351LT liquid level transmitter is a field transmitter directly installed on pipelines or containers. Due to the direct contact between the isolation membrane and the liquid phase medium, there is no need to use a pressure tube to lead out the positive pressure side. Therefore, it can measure the liquid level, pressure, and density of media such as high temperature, high viscosity, easy crystallization, easy precipitation, and strong corrosion, and then convert them into 4-20mA signal output. The FB3351LT liquid level transmitter adopts standard flanges for installation and connection, with flat flanges and insert flanges for users to choose from. The flange installation standards are ANSI 3-inch and 4-inch, with specifications of 150LB and 300LB flanges. Flange diaphragm materials include 316L, Hastelloy, Monel, Tantalum, etc.

The FB3351LT liquid level transmitter body adopts a sophisticated small membrane box capacitive sensor produced by introducing advanced foreign technology and equipment. Its key raw materials and components are all imported, with advanced design principles, complete varieties and specifications, and easy installation and use. The appearance of this model combines the characteristics of the widely used 3051 and EJA in China,

Make it have unparalleled forward and backward compatibility, which can prevent you from being affected by the product

Protect your investment from the waste caused by being ahead of schedule.

★ Features

High precision;

Good stability;

Intelligent HART fieldbus protocol;

※ Small, lightweight, sturdy and vibration resistant;

※ Range and zero point can be continuously adjusted externally;

※ Adjustable damping;

Good one-way overload protection characteristics;

※ No mechanical movable parts, low maintenance workload;

The entire series has a unified structure and strong interchangeability of components;

Explosion proof structure, all-weather use;

The membrane material that comes into contact with the medium can be selected; The membrane can be made of corrosion-resistant materials such as 316L, TAN, HAS-C, MONEL, etc;

★ Technical parameters

technical indicators

● Target audience

liquid

● Measurement range

0-1.3 kPa to 0-6890 kPa

● Output

4~20mADC, Intelligent HART fieldbus protocol signal output

● Power supply

24V DC, Can operate at 12V DC (with LCD display minimum 15VDC), up to 45V DC

Positive and negative transfer

Regardless of the output, after positive and negative migration, the upper and lower limits of the range must not exceed the limit of the range

Maximum migration amount: 500% of the minimum calibration range

Maximum negative transfer: 600% of the minimum calibration range

● Temperature range

Storage temperature: -40 to+100 ℃

Amplifier operating temperature range (ambient temperature): -30 to+70 ℃

Working temperature (medium temperature) of silicone oil filled measuring element: -40 to+149 ℃


● Humidity range

Relative humidity is 1-100%

● Sensor volume change

Less than 0.16cm3

● Indicator table

(On site) pointer type; digital display

Explosion proof type

Explosion proof ExdIICT6; Intrinsic safety ExiaICT6

● Range and zero point

External continuous adjustable

● Overpressure limit

Application range below 6MPa: 0 (absolute pressure) to 14MPa

● Damping

Continuously adjustable between 0.2 and 16 seconds

● Start time

2 seconds, no preheating required

performance metrics

● Accuracy

±0.5%

● Stability

< ± 0.25% FS/year

● Temperature impact

≤± 0.60% (change every 28 ℃ at maximum range)

● Static pressure influence

≤± 0.60% (at maximum range)

● Vibration impact

In any axial direction, with a frequency of 200Hz, the error caused is less than ± 0.05% of the maximum range, and the range code 2 (micro differential pressure) is ± 0.25%

● Power supply impact

Less than 0.005%/V of the output range

● Load impact

When the power supply is stable, there is no load impact

● Installation location impact

The maximum zero point error that can be generated is 0.24 kPa, but it can be calibrated and has no impact on the measurement range

performance metrics

● Structural materials

Isolation membrane: 316 stainless steel, Hastelloy C, Monel alloy, Tantalum

O-ring (medium contact area): Fluororubber, PTFE

Flanges and bolts: 316 stainless steel.

Filling fluid: silicone oil or inert oil

Electrical casing: polyurethane baked paint low copper cast aluminum alloy

Bolt: Stainless steel

● Pressure connector

The connecting screw hole on the pressure chamber is 1/4NPT, and the connecting screw hole on the impulse joint is 1/2NPT. The center distance is shown in the external dimension drawings of various models

The signal cable connection screw hole is M20 × 1.5

● Shell protection level

IP65

● Weight

3.9kg (excluding options, except for flanged transmitters)

★ Selection Table

FB3351LT

Capacitive flange level transmitter

code name

Range (kPa)

4

0-6.2~37.4

5

0-31.1~186.8

6

0-117~690

7

0-345~2068

code name

output

S

intelligent type

code name

Structural materials

Nominal diameter (mm)

Insertion tube length (mm)

High voltage side isolation diaphragm material

G0

50

flat

316L (stainless steel)

A0

80

flat

316L (stainless steel)

A2

80

50

316L (stainless steel)

A4

80

100

316L (stainless steel)

A6

80

150

316L (stainless steel)

B0

100

flat

316L (stainless steel)

B2

100

50

316L (stainless steel)

B4

100

100

316L (stainless steel)

B6

100

150

316L (stainless steel)

G2

50

flat

Ha Shi C-276

C0

80

flat

Ha Shi C-276

G4

50

flat

Tantalum

E0

80

flat

Tantalum

code name

Install flange

A

3〞150LB

B

4〞150LB

C

3〞300LB

D

4〞300LB

E

2〞150LB

F

2〞300LB

G

DN50 PN2.5/4.0

H

DN80 PN2.5/4.0

I

DN100 PN2.5/4.0

code name

Structural materials

Flanges and fittings

Exhaust/Drain Valve

Low voltage side isolation diaphragm material

22

316SST

316SST

316L (stainless steel)

23

316SST

316SST

Hastelloy C alloy

24

316SST

316SST

Monel alloy

25

316SST

316SST

Tantalum

code name

Optional parts (if not selected, do not fill in)

M1

0-100% linear indicator table

M3

LCD watch

B1

Pipe bending installation plate

B2

Plate bending installation plate

B3

Pipe installation safety installation board

D1

The side relief valve is located at the upper part of the pressure chamber

D2

The side relief valve is located at the lower part of the pressure chamber

C1

1/2-14NPT pressure joint rear welded pressure pipe with a diameter of 14

C2

T-shaped external thread joint M20X1.5

C3

1/2-14NPT taper pipe female thread joint

d

Explosion proof ExdIICT6

i

Intrinsically safe ExiaICT6

FB3351LT

4

E

A0

B

22

M1

Example of transmitter selection

Note: Other dimensions for flange installation will be ordered separately.

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