3151 DP Sensor|Double-flange DP transmitter

3151 DP Sensor, the double-flange dp transmitter, is one of our differential pressure sensors series product. 3151 DP Sensor, featured with: 4-20ma output, HART protocol digital signal (two-wire system), Flameproof ExdIIBT5Gb; (explosion-proof certificate no.:CE16.1163) Intrinsically safe ExiaIICT4/T5/T6Ga; (explosion-proof certificate no. : CE15.2354X) Accuracy: ± 0.1%, ±0.2%

Product Details

3151 DP Sensor|Double-flange DP transmitter

Differential pressure sensors (dp sensors)

3151 DP Sensor, the double-flange dp transmitter,

is one of our differential pressure sensors series product.

3151 DP Sensor, featured with:

4-20ma output,  

HART protocol digital signal (two-wire system),

Flameproof ExdIIBT5Gb;

(explosion-proof certificate no.:CE16.1163)

Intrinsically safe ExiaIICT4/T5/T6Ga;

(explosion-proof certificate no. : CE15.2354X)

Accuracy: ± 0.1%, ±0.2%

The differential pressure sensor (dp sensor) measures the level,

density and pressure of a liquid, gas or vapor,

and then converts it into a 4-20 mA DC signal output.

The SMART 3151 DP sensors can communicate with the HART Communicator,

through which it can be set,

monitored or combined with the host computer to form an on-site monitoring system.

3151DP field adjustable intelligent differential pressure transmitter,

is a new product developed by our company,

according to the requirements of the site.

It can be separated from the handheld communicator,

and realize on-site zero change and configuration operations by means of buttons.

Differential Pressure Transducers for 3151 series dp sensor

3151 DP transducers (DP Sensors),

often used in flow measurement,

where they can measure the pressure differential across a venturi, orifice,

or other type of primary element.

Our dp srnsor also can measure differential pressure ,

or level measurement.

Huaheng manufactures a range of dial and digital gages to reliably measure,

and display pressure difference,

between two pressure sources using gas or liquid in a process flow.


Transmitters are sensors,

with an electrical transmission output,

for indication of a difference between two pressures.

They are designed for use with compatible gases,

and liquids applied to the pressure and reference ports.

What is DP sensor?

Huaheng Instrument is one of the leader manufacturers in China, for the DP sensor.

Differential pressure (dp) sensor definition

DP sensor, also called dp transmitter, or dp transducer.

Differential Pressure Sensor (DPS),

is a sensor used to measure the difference between two pressures.

It is usually used to measure the differential pressure between the front,

and rear ends of a device or component.

Differential pressure (dp) level sensor

Dp sensor can be used to measure level, which is differential pressure (dp) level sensor.

DP level sensor, is a pressure signal measured,

t the reference side of atmospheric pressure (low pressure side),

with one or two ports for flange (or other connection) and process pipe connection.

On the basis of common pressure/differential pressure transmitter,

one or two isolation membrane boxes are added to measure the liquid receiving part.

Mainly used for measuring high temperature,

easy to solidify or crystallize, containing solid suspended matter,

too viscous, corrosive or other needs to maintain sanitary conditions, non-polluting media.

Differential pressure (dp) sensor price

Huaheng Instrument supply dp sensors,

our pressure transmitters are are popular in many countries,

like: India, Paksitan, US, Philippines, South Africa.

We are great manufacturer in China.

The core components of the product,

the differential pressure sensor,

and the circuit board,

are all developed and produced by ourselves.

And we have ample inventory of the whole machine,

so our differential pressure (dp) sensor prices are relatively reasonable and cost-effective.

You can send your inquiry now.

How does a DP transmitter work?

Differential pressure/high static pressure differential pressure transmitter,

is a pressure signal measured at the reference end of the low-pressure side,

and has two ports connected to the process pipe.

The working principle of the metal capacitive differential pressure transmitter (dp sensor),

is that when the pressure acts on the surface of the metal measuring diaphragm,

(elastic measuring element) of different thickness,

through the isolating diaphragm,

and the guiding medium, the diaphragm is slightly generated.

The maximum deformation does not exceed 0.1mm.

The high-precision circuit,

for measuring the deformation of the diaphragm,

transforms this tiny deformation into a voltage signal proportional to the pressure,

through the linearization and temperature compensation,

and then uses a dedicated chip,

to convert this voltage signal,

to an industry standard 4-20mA current signal or a 1-5V voltage signal.

How does a pressure sensor work?

What is the working principle of a pressure sensor?

A pressure sensor works by converting pressure into an analogue electrical signal.

The demand for pressure measuring instruments increased during the steam age.

When pressure sensing technologies were first manufactured,

they were mechanical and used Bourdon tube gauges,

to move a needle and give a visual indication of pressure.

Nowadays we measure pressure electronically using pressure transducers and pressure switches.

How do differential pressure gauges work?

A differential pressure gauge is a visual indicator,

designed to measure the difference between two pressure points within a process system.

The gauge usually has two inlet ports,

that are each connected to the pressure points being monitored.  

Differential pressure (dp) sensors measure the difference in pressure between two samples,

similar to how a gauge sensor works,

but differential sensors are sometimes,

used to detect the pressure difference either side of an object, for example.

Differential pressure sensors are often used to monitor airflow in HVAC applications.

Differential pressure transmitter (dp sensor) principle operation

Differential pressure gauges are used to measure the flow of a liquid inside a pipe.

An orifice plate, venturi, or flow nozzle is often used to reduce the diameter inside a pipe.

The differential pressure gauge measures the flow rate,

by finding the difference in pressure before and after the orifice. Differential pressure gauges are an easy way to get a visual indication of process flow.  

You can just contact us for more information about our dp sensors,


differential pressure sensor dpf

DP sensor manual

The differential pressure sensor can also be used to measure gas flow rate, liquid level, and the like.

The method of measuring the gas flow rate is obtained,

by the difference between the flow tube pressure,

and the atmospheric pressure, and the static pressure of the flow tube is obtained,

and the square root of the static pressure is proportional to the flow rate,

thereby obtaining the flow rate.

What Separates a Differential Pressure (DP) Sensor From Other Pressure Sensors?

The pressure sensor,

in the general sense is mainly composed of a load cell sensor (also called a pressure sensor),

a measuring circuit and a process connection.

It can convert the physical pressure parameters,

such as gas and liquid felt by the load cell sensor,

into standard electrical signals (such as 4~20mADC, etc.),

to supply the secondary instrument,

such as indicating alarm device, recorder, regulator, etc. for measurement and indication.

And process adjustment.

According to the measurement range,

the pressure transmitter can be divided into:

general pressure transmitter (0.001MPa~35MPa).

and differential pressure transmitter (0~1.5kPa),

and three kinds of negative pressure transmitter;

from the perspective of accuracy,

because The accuracy of China's national standard is 0.5%.

So in recent years can be divided into high-precision pressure transmitter (0.1% or 0.2% or 0.075%),

and general pressure transmitter (0.5%)

A differential pressure transmitter is a transmitter,

that measures the difference in pressure across the transmitter.

The measured result is the pressure difference.

Different from the general pressure transmitter,

the differential pressure transmitter has two pressure interfaces.

The differential pressure transmitter is generally divided into a positive pressure terminal,

and a negative pressure terminal.

Under normal circumstances,

The pressure at the positive pressure end of the differential pressure transmitter,

should be greater than the pressure in the negative pressure section to measure.

The pressure difference between the positive,

and negative sides of the medium is measured,

and converted into a standard current signal (4-20 mA),

that can react to the pressure difference.

Differential pressure transmitters are used to measure the liquid level,

density and pressure of liquids,

gases and vapors and then convert them into a current signal output of 4-20 mA DC.

The 3151DP can also communicate with each other via the BRAIN Communicator or the CENTUM CS/μXL,

or HART 275 Communicator for setting and monitoring.

A pressure transmitter converts a practical pressure value,

into a regulated electrical signal output.

The differential pressure transmitter,

compares the pressure difference between the two pressure values,

and converts this difference into a canonical signal output

(the practice is to do subtraction and then output the difference).

The differential pressure transmitter measures the difference in pressure,

between two (inside the container) gas or liquid as a relative amount.

The pressure transmitter measures the pressure of a single

(inside the container) gas or liquid in an absolute amount.

Double-flange differential pressure sensor features:

  ●High precision;

  ●Good stability;

  ●Two-wire system;

  ● Solid components, plug-in printed circuit boards;

  ●Small, lightweight, and strong anti-vibration;

  ●The range and zero point are continuously adjustable outside;

  ● Positive migration can reach 500%; negative migration can reach 600%;

  ● Damping adjustable;

  ● One-way overload protection features are good;

  ●No mechanical moving parts, less maintenance work;

  ●All series of unified structure, strong interchangeability of parts;

  ●The diaphragm material of the contact medium can be selected as: (316L, TAN, HAST-C, MONEL and other corrosion resistant materials)

  ● Explosion-proof structure, used all day.


You may be interested in what is pressure transmitter. 

Double-flange differential pressure transmitter

Double-flange differential pressure transmitter structural material:

 ◆Isolation diaphragm: 316L stainless steel, Hastelloy C-276, Monel alloy, or tantalum

  ◆Exhaust/drain valve: 316 stainless steel, Hastelloy C, Monel

  ◆Flange and joint: carbon steel nickel plated, 316 stainless steel, Hastelloy C or Monel

  ◆Contact medium "O" ring: butyl nitrile rubber, fluoro rubber

  ◆ Filling liquid: silicone oil or inert oil

  ◆Bolt: carbon steel nickel plating

  ◆Electronic housing material: low copper aluminum alloy

  ◆Pressing connection: flange NPT 1/4, center distance 54mm; joint NPT 1/2 or M20×1.5 male thread ball cone seal, center distance 50.8, 54, 57.2mm with joint (NPT taper pipe thread meets GB/T12716-91)

  ◆Signal wire connection hole: G1/2〃

  ◆ Weight: about 5.5kg (without accessories)

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Industrial Differential Pressure Transmitters

Huaheng Instrument (china-transmitters.com)

offers overs 20 dp sensors for liquid level, pressure, flow, temperature measurement. 

Our differential pressure level transmitters suit to measeure water and other liquid level.

A wide variety of DP level senors are available to you,

such as SMT3151LT Differential pressure level transmitter.

You can also choose from liquid flow meter and pressure transmitters, not specified.

We are differential pressure level transmitter suppliers, located in China.

The top supplying country is China(Mainland),

which supply 100% of DP transmiters respectively.

Differential pressure level transmitter is most popular for India,

Pakistan ,South Africa, The US.

Tha quality is same as the original premium quality.

You can ensure product safety by selecting from our products, including IOS9000, … certification.

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Hot Tags: 3151 DP Sensor|Double-flange DP transmitter, China, suppliers, manufacturers, factory, price, OEM, high quality, buy, type, principle, function

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