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Yantai Auto Instrument Making Co.,Ltd
Yantai Auto Instrument Making Co.,Ltd
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Differential Pressure Transmitter with Diaphragm Seal with 4-20mA output HART

Differential Pressure Transmitter with Diaphragm Seal with 4-20mA output HART

Place of Origin : China
Brand Name : AUTO
Certification : ISO9001:2000,CE
Model Number : AT3351
MOQ : as your required
Price : $300/PC
Packaging Details : carton
Delivery Time : 3-5days after confirm order
Payment Terms : T/T,Paypal,L/C,
Supply Ability : 1500
Output signal : 4-20mA/HART
Power supply : DC24V (12~36V)
Operating temperature : -40 to +140C
Skype : summer.cao39
Name : differential pressure transmitter
Application : Liquid, Gas, Vapor
Accuracy : 0.075 or 0.5
Water Proof : IP65/IP68
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Differential Pressure Transmitter with Diaphragm Seal with 4-20mA output HART Protocol


ATseries pressure transmitter with remote seal device, constitutes a remote pressure transmitter.

The remote transmitter can avoid the measured medium directly with diaphragm contact transmitter.

The remote seals can be fitted to AT3351/1151 Series transmitters for GP/AP/DP.

Application Environment

The medium is corrosive and requires diaphragm materials in the transmitter which are not available.

The temperature of the medium is outside the limits(high temperature or freezen) specified for the transmitter and the transmitter needs be isolated .

The medium is highly viscous or contains solids which would easy to block the measuring chambers of the

transmitter.

The medium tends towards polymerization or crystallization when using the lead pressure tube.

The process requires quick-release remote seals and fast cleaning .

Remote Diaphragm Seals differential pressure transmitter


Design and Construction

Remote device assembly consists of a transmitter, one or two remote seals, an appropriate transmission liquid, and a connection element between the transmitter and remote seal (direct mounting or capillary).

There are many kinds of structures and materials available, remote device assembly welding structure reliability. Low volume design in liquid filled cavity, in order to reduce the influence of environment temperature, according to the requirements of users, charging conventional silicone oil using temperature range (- 40 ~ 149); filled silicone oil with high temperature using temperature range (15 ~ 315)℃ (at the request of environment temperature is more than or equal to 10 DEG C. Generally to increased the tropical tipe outside the capillary tube in North cold environment.

Remote device maximum working pressure is the user to select remote transmission device ratings; working pressure shall not be less than 350 kPa (absolute pressure). For corrosive medium, select the isolation diaphragm material, Please refer to Appendix 3 (only for the role of the user selected reference).

Technical specifications:

Measuring object: high temperature corrosion or viscous liquid

Accuracy: 0.1% , 0.2% , 0.5%

Measurement range: 6kPa ~ 20MPa

Measurement type: single/double flange, flange clamp type (specification, size can be customized according to customer requirements).

Output signal: 4 - 20mA, intelligent 4 - 20mA HART communication protocol .

Working voltage: 24V DC; 12 ~ 36V DC; 18.5 ~ 45V DC; 220V AC, 50HZ.

Filling medium: ordinary silicone oil, silicone oil resistant high temperture, fluorinated oil (selection according to customer’s site temperature).

Diaphragm material: 316L stainless steel, Monel, Hastelloy Has-c, tantalum (special specifications can be customized according to customer requirements).

Explosion-proof grade: ordinary type; flameproof intrinsically safe ExiaIICT6 ExdIIBT4; electrical connections: direct connection, lead, explosion-proof terminal (special specification according to customer demand for customized) .

Display: a variety of display options (mA, Pa ,0- 100%, density, liquid level and so on).

With the EEPROM, without loss of data when power off.

Table 1 Differential pressure / pressure transmitter with remote device

Structure

AT3351

AT 3351 Series Pressure

Code

Measurement Type

DP/GP

Remote Seal System Transmitter(DP:Double flange;GP:Single flange)

Code

Measurement Span

4E

(06~40)kPa

5E

(040~200)kPa

6E

(00.16~1)MPa

7E

(00.4~2.5)MPa

8E

(01.6~8)MPa

9E

(04~20)MPa

Code

Accuracy

1

0.5%

2

0.075%

Code

Explosion proof

P

Normal

d

EdBT4

i

ExiaIICT6

Code

Integral Indicator

/

None

M1

(0~100)% Linear pointer table

M3

3 1/2 LCD Digital Display

M4

3 1/2 LED Digital Display

M5

LCD Intelligent Display

Code

Output

E

(4~20)mADC Linear,Analog signal

S

(4~20)mADC Intelligent, With HART Protocol Communication

Code

Flange material Diaphragm material

22

316L stainless steel 316L

23

316L stainless steel Hastelloy C-276

24

316L stainless steel Monel

25

316L stainless steel Tantalum

Code

Mounting bracket

B1

Tube bending support

B2

Plate bending support

B3

Tube / plate mounted flat bracket

Example:

AT3351 DP 4E 1 P M5 S 22 B1

AT 3351Series Remote Seal System Different pressure transmitter;

Range 0~40KPa(4E); Accuracy :0.5% Intelligent LCD Display,

(4~20)mADC With HART Protocol Communication;

Diaphragm material:316L; Tube bending support

;

Table 2 Remote System Filled Characteristics

Code

System fill

Temperature Range()

Density(g/cm3)

Temperature expansion coefficient (1/)

Viscosity in 25(mPa·s)

/

Silicone oil

-40~149

0.934

0.00108

<20

F

High temperature silicone oil

15~315

1.07

0.00053

44~50

S

Fluorolube oil

-45~205

1.85

0.000864

65

NOTE:

1. The temperature limit will be lower in vacuum.

2. If the pressure exceeds 590kPa, the temperature can be up to 315, otherwise, it should be less than 315. When the high temperature silicone oil is filled, it is required that the environment temperature of the flange joints, capillary, transmitter body and other parts of the high temperature silicone oil contacted should below in 10. In the cold condition of the north, the capillary should be covered by the tropical, so that the oil can not solidify.

3. Order code behind of the capillary Code


Our Services

1. Delivery in time,delivery time is 7 days for sample and 15 working days for bulk order;
2. We could send the goods , labeled your brand name, to your customer directly, and also can provide neutral product (without brand and our company information)

3. Through strict quality control system and strong production capacity to provide customers with quality products

4. Your inquiry and problems will be replied in 24 hours by well-trained and experienced staffs;
5. After-sale tracking service for all of our clients;

6. We offer 12 months warranty for all of our products from the shipping date.
7. OEM is available; small quantities, mixed bulk orders are also welcome;

8. We also provide paid repair services for out of the warranty period or other brand products.


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Why choose me?

1.Flexible:what you want, what we make.


2.Creative:R&D hi-tech products for the market.


3.Professional:20 years experience on R&D pressure transmitter products since1994.


4.Responsible:The warranty period of 18months.


5.Competitive price and good quality.

Customers's business is our business.

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