Rosemount 3051T In-Line Pressure Transmitter

Rosemount 3051T In-Line Pressure Transmitter

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Rosemount 3051T In-Line Pressure Transmitter

With the Rosemount 3051 Pressure Transmitter, you’ll gain more control over your plant. You’ll be able to reduce product variation and complexity, as well as your total cost of ownership by leveraging one device across the number of pressure, level, and flow applications. You’ll have access to the information you can use to diagnose, correct, and even prevent issues. And with unparalleled reliability and experience, the Rosemount 3051 is the industry standard that will help increase efficiency and safety so your operations can remain globally competitive.

Pressure technology solutions include capacitive, piezoresistive and other sensors to provide essential process data in differential, gage and absolute pressure applications.

These sensors measure pressure, level, flow, and derivatives by physically responding to the changes in process pressure, converting the physical movement into an electrical signal.

Rosemount 3051T In-Line Pressure Transmitters are the industry standard for gage and absolute pressure measurement.

The in-line, compact design allows the transmitter to be connected directly to a process for quick, easy and cost-effective installation. Capabilities include: n Power advisory can proactively detect degraded electrical loop integrity issues (option code DA0) n LOI with straightforward menus and built-in configuration buttons (option code M4) n Safety Certification (option code QT)

 

 

Features

  • Over 10 million Rosemount 3051 devices installed globally, providing reliable pressure readings in harsh environments
  • In-line gauge and absolute pressure measurements support up to 20,000 psi (1378,95 bar) for pressure and level solutions
  • 10-year installed stability and 150:1 range down produce reliable measurements and wide application flexibility
  • Supports common protocols for integration in many host environments across many industries
  • Wide range of manifolds and remote seals are available – factory-assembled and leak-tested for easy installation
  • Local Operator Interface (LOI) enables quick commissioning and provides easy access to process and device information
  • SIL 2/3 certified to IEC 61508 (via 3rd party) and prior-use certificate of FMEDA data for safety installations
  • Loop Integrity diagnostics detect electrical loop issues for reduced downtime

Technical specification

Pressure type

  • Absolute
  • Gage

Pressure range

Gage (Rosemount 3051TG)

  • –14.7 to 30 psi (–1,01 to 2,06 bar)
  • –14.7 to 150 psi (–1,01 to 10,34 bar)
  • –14.7 to 800 psi (–1,01 to 55,15 bar)
  • –14.7 to 4000 psi (–1,01 to 275,79 bar)
  • –14.7 to 10000 psi (–1,01 to 689,47 bar)
  • –14.7 to 20000 psi (–1,01 to 1378,95 bar)

Absolute (Rosemount 3051TA)

  • 0 to 30 psi (0 to 2,06 bar)
  • 0 to 150 psi (0 to 10,34 bar)
  • 0 to 800 psi (0 to 55,15 bar)
  • 0 to 4000 psi (0 to 275,79 bar)
  • 0 to 10000 psi (0 to 689,47 bar)
  • 0 to 20000 psi (0 to 1378,95 bar)

Transmitter output

  • 4–20 mA with a digital signal based on HART Protocol
  • FOUNDATION Fieldbus Protocol
  • PROFIBUS PA Protocol
  • Wireless (requires wireless options and engineered polymer housing)
  • Low-power 1–5 Vdc with a digital signal based on HART Protocol

Process connection style

  • 1/2–14 NPT female (range 1–5 only)
  • G1/2 A DIN 16288 male (range 1–4 only)
  • Coned and threaded, compatible with autoclave type F-250-C (range 5–6 only)
  • Non-threaded Instrument flange (range 1–4 only)

Isolating diaphragm

  • 316L SST
  • Alloy C-276
  • Gold-plated 316 SST

Process connection wetted parts material

  • 316L SST
  • Alloy C-276
  • 316L SST

Sensor fill fluid

  • Silicone
  • Inert

Pressure Transmitter Applications

  • Oil and Gas Automation
  • Pressure Gauge Replacement
  • Plant Utility Monitoring
  • Heat Exchangers
  • Filters for Pumps, Turbines, Compressors
  • Environmental Compliance
  • Lube Oil Systems for Rotating Equipment
  • Tank Inventory

Pressure Transmitter WIKA Model A10

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Pressure Transmitter WIKA Model A10

A pressure transducer is a transducer that converts pressure into an analog electrical signal. There are various types of pressure transducers, such as a capacitive pressure transducer, digital output pressure transducer, voltage/current output pressure transducer, and many others.

However, in all types of pressure transducers, the conversion of pressure into an electrical signal is achieved by the physical deformation of the diaphragm of the pressure, which then produces an electrical resistance change proportional to the pressure.

The Pressure Transmitter WIKA Model A10 is precision engineered and manufactured to fit many industrial and OEM pressure measurement applications.

The rugged design provides resistance to vibration, shock, wide temperature variations, RFI and other extreme environmental conditions that are typical of industrial and OEM applications.

Performance and reliability are enhanced by the all stainless steel welded measuring cell that eliminates the need for soft sealing materials that may deteriorate over time. The state-of-the-art manufacturing and assembly process increases the long term reliability of the A-10.

Primary applications include process control and automation, hydraulics, pneumatics and machine controls.

Applications

  • Mechanical engineering
  • Machine tools
  • Process control and automation
  • Hydraulics and pneumatics
  • Pumps and compressors

Technical Features

Gauge Pressure (Bar)

0 … 0.05 / 0 … 0.1 / 0 … 0.16 / 0 … 0.25 / 0 … 0.4 / 0 … 0.6 / 0 … 1 / 0 … 1.6 / 0 … 2.5 / 0 … 4 / 0 … 6 / 0 … 10 / 0 … 16 / 0 … 25 / 0 … 40 / 0 … 60 / 0 … 100 / 0 … 160 / 0 … 250 / 0 … 400 / 0 … 600 / 0 … 1,000

Absolute Pressure (Bar)

0 … 0.1 / 0 … 0.16 / 0 … 0.25 / 0 … 0.4 / 0 … 0.6 / 0 … 1 / 0 … 1.6 / 0 … 2.5 / 0 … 4 / 0 … 6 / 0 … 10 / 0 … 16 / 0 … 25

Vacuum and +/- measuring range (Bar)

-0.025 … +0.025 / -0.05 … 0 / -0.05 … +0.05 / -0.05 … +0.15 / -0.05 … +0.2 / -0.05 … +0.25 / -0.1 … 0 / -0.1 … +0.1 / -0.15 … +0.15 / -0.16 … 0 / -0.2 … +0.2 / -0.25 … 0 / -0.25 … +0.25 / -0.3 … +0.3 / -0.4 … 0 / -0.5 … +0.5 / -0.6 … 0 / -1 … 0 / -1 … +0.6 / -1 … +1.5 / -1 … +3 / -1 … +5 / -1 … +9 / -1 … +15 / -1 … +24

Output Signals

  • Current (2-wire): 4 … 20 mA
  • Voltage (3-wire): DC 0 … 10 V
  • Voltage (3-wire): DC 0 … 5 V
  • Voltage (3-wire): DC 1 … 5 V
  • Ratiometric (3-wire): DC 0.5 … 4.5 V

Voltage supply

  • 4 … 20 mA: DC 8 … 30 V
  • DC 0 … 10 V: DC 14 … 30 V
  • DC 0 … 5 V: DC 8 … 30 V
  • DC 1 … 5 V: DC 8 … 30 V
  • DC 0.5 … 4.5 V: DC 8 … 30 V
  • DC 0.5 … 4.5 V ratiometric: DC 5 V ± 10 %

Temperature Ranges

  • Ambient: 0 … +80 °C

Process Connections

  • G ⅛ B – G ¼ B – G ¼ female – G ¼ female, with flange connection – G ⅜ B – G ½ B
  • G ¼ A – G ½ A – M14 x 1.5
  • ⅛ NPT – ¼ NPT – ¼ NPT female – ½ NPT
  • R ¼ – R ⅜ – R ½
  • PT ¼ – PT ½ – PT ⅜

Ingress protection

  • IP65
  • IP67

 

Temperature Transmitter

Temperature Transmitter

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Temperature Transmitter

Temperature Transmitter converts the input signal from a wide range of sensors, such as resistance sensors and thermocouples, but in some cases also from potentiometers, into a standardized output signal (e.g. 0 … 10 V or 4 … 20 mA).

With digital temperature transmitters, the sensor type and the measuring span can be freely configured, along with many further options such as the error signalization or a measuring point identification.

Type Of Temperature Transmitter

There are many different types of Temperature Sensor available and all have different characteristics depending upon their actual application. A temperature sensor consists of two basic physical types:

Contact Temperature Sensor Types

These types of temperature sensor are required to be in physical contact with the object being sensed and use conduction to monitor changes in temperature. They can be used to detect solids, liquids or gases over a wide range of temperatures.

Non-contact Temperature Sensor Types

These types of temperature sensor use convection and radiation to monitor changes in temperature. They can be used to detect liquids and gases that emit radiant energy as heat rises and cold settles to the bottom in convection currents or detect the radiant energy being transmitted from an object in the form of infra-red radiation (the sun).

Temperature Sensor

Negative Temperature Coefficient (NTC) thermistor

A thermistor is a thermally sensitive resistor that exhibits a large, predictable, and precise change in resistance correlated to variations in temperature.

An NTC thermistor provides a very high resistance at low temperatures. As temperature increases, the resistance drops quickly. Because an NTC thermistor experiences such a large change in resistance per °C, small changes in temperature are reflected very fast and with high accuracy (0.05 to 1.5 °C).

Because of its exponential nature, the output of an NTC thermistor requires linearization. The effective operating range is -50 to 250 °C for glass encapsulated thermistors or 150°C for a standard.

Resistance Temperature Detector (RTD)

An RTD, also known as a resistance thermometer, measures temperature by correlating the resistance of the RTD element with temperature. An RTD consists of a film or, for greater accuracy, a wire wrapped around a ceramic or glass core.

The most accurate RTDs are made using platinum but lower-cost RTDs can be made from nickel or copper. However, nickle and copper are not as stable or repeatable. Platinum RTDs offer a fairly linear output that is highly accurate (0.1 to 1 °C) across -200 to 600 °C. While providing the greatest accuracy, RTDs also tend to be the most expensive of temperature sensors.

Thermocouple

This temperature sensor type consists of two wires of different metals connected at two points. The varying voltage between these two points reflects proportional changes in temperature.

Thermocouples are nonlinear, requiring conversion when used for temperature control and compensation, typically accomplished using a lookup table. Accuracy is low, from 0.5 °C to 5 °C.  However, they operate across the widest temperature range, from -200 °C to 1750 °C.

Semiconductor-based sensors

A semiconductor-based temperature sensor is placed on integrated circuits (ICs). These sensors are effectively two identical diodes with temperature-sensitive voltage vs current characteristics that can be used to monitor changes in temperature.

They offer a linear response but have the lowest accuracy of the basic sensor types at 1 °C to 5 °C. They also have the slowest responsiveness (5 s to 60 s) across the narrowest temperature range (-70 °C to 150 °C).

Application Of Temperature Transmitters

  • monitoring temperature of a remote process
  • drive equipment such as meters, data loggers, chart recorders, computers or controllers.

Advantages of temperature sensor

Thermocouple measures temperature in -200oC to +2500oC range, RTD measures in -200oC to +850oC range, thermistor measures in -100oC to +260oC range and IC sensors measures in -45oC to 150oC range.

(Advantages of thermocouple are): No external power required, simple and rugged in construction, cheaper, support for wider temperature range etc.

  • (Advantages of RTD are ): More stable, higher accuracy, more linearity compare to thermocouple
  • (Advantages of thermistor are): Higher output, faster in operation
  • (Advantages of IC sensor are): Highest output, cheaper, most linear than all types

Disadvantages of temperature sensor

  • (Disadvantages of thermocouple are): Non linearity, least stability, Low voltage, Reference is needed, least sensitivity etc.
  • (Disadvantages of RTD are ): Lower absolute resistance, expensive, current source needed, less rugged compare to thermocouples etc.
  • (Disadvantages of thermistor are): Nonlinearity, limited support for temperature range, current source needed, fragile, self heating etc.
  • (Disadvantages of IC sensor are): Power supply needed, slower in operation, self heating, limited configurations, temperature upto 150oC etc.
What is a pressure transmitter?

What is a pressure transmitter?

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What is a pressure transmitter?

What is a pressure transmitter? A pressure transmitter or pressure sensor is a device that measures pressure in a liquid, fluid, or gas, or level of industrial liquids and gases.

Transmitter use to measure pressure in different processes.

Pressure transmitters are divided into three types:

Absolute Transmitter:

Absolute transmitter takes vacuum pressure as its base and then measures process pressure.

Gauge Transmitter:

This type measures process pressure with the location’s atmospheric pressure as a base.

Differential Transmitter:

When sensing units are introduced to multiple pressures as inputs, differential transmitters measure the differences between the various pressures.

Then it’s transducing that pressure into an analog electrical signal.

There are various types of pressure transducers, such as:

  • Pneumatic transmitter
  • Analog transmitter
  • Digital transmitter

Transducer

A transducer is a device which measures a physical quantity such as temperature or pressure and converts it into an electrical output signal.

What is the difference between transmitter and transducer

Both transducers and transmitters convert energy from one form to another and give an output signal. The signal is directed to any device that interprets it and uses it to display a record or alter the pressure in a system.

So how do you decide whether it is best to use a transducer or transmitter for your application? Transducers and transmitters are virtually the same things, the main difference being the kind of electrical signal each sends.

A transducer sends a signal in volts (V) or millivolt (mV) and a transmitter sends a signal in milliamps (mA).

If the electrical connections in your process are short, such as in the laboratory or inside an electronics enclosure, a pressure transducer is more desirable as they tend to be smaller and there are very few active electronic components that can be upset by electromagnetic interference.

HART®

HART or Highway Addressable Remote Transducer is a type of digital communications protocol for configuring and reading instrumentation via the 4 to 20mA current loop. HART® data is communicated via a low-level AC digital signal which is superimposed on a 2 wire 4-20mA current loop signal and functions simultaneously without interfering with the measurement output signal.