Compare pressure transmitters. If you have questions related to Rosemount Pressure Transmitters, please contact us.
Products
Pressure Transmitters
Gauge Pressure vs. Absolute Pressure
Gauge and absolute pressure transmitters measure static pressure in a process. Gauge pressure measures relative to the atmosphere, while absolute pressure measures relative to a perfect vacuum. Static pressure applications across industries are almost endless, and gauge pressure is the most common measurement type of pressure transmitters.
Multivariable Measurement Advantages
Enhanced Performance
Multivariable measurement solutions help enhance performance. Features include Ultra for Flow (+/- 0.04% of reading specification) for high accuracy in flow measurement and Callendar-Van Dusen (CVD) sensor matching, which uses CVD constants to increase RTD measurement accuracy up to 70%.
Pressure Transmitter Comparison
Rosemount 4051S Pressure Transmitter
- 20 year warranty
- 20 year stability
- Up to 0.025% reference accuracy
- Process Intelligence
- Dedicated Plugged Line & Loop Integrity Diagnostic
- Expanded Process Alerts
- Bluetooth® connectivity
- Backlit graphical display
- 4-20 mA HART®
Rosemount 3051S Pressure Transmitter
- 15 year warranty
- 15 year stability
- Up to 0.025% reference accuracy
- Process Intelligence
- Plugged Line & Loop Integrity Diagnostic
- Process Alerts
- Remote display
- 4-20 mA HART®, WirelessHART® protocol, FOUNDATION™ Fieldbus
Rosemount 3051 Pressure Transmitter
- 5 year warranty
- 10 year stability
- Up to 0.04% reference accuracy
- Process Alerts
- Plugged Line & Loop Integrity Diagnostic
- Bluetooth® connectivity
- Backlit graphical display
- 4-20 mA HART®, WirelessHART® protocol, FOUNDATION™ Fieldbus, PROFIBUS®, 1-5 V Low Power HART®
Rosemount 2051 Pressure Transmitter
- Up to 5 year warranty
- Up to 7 year stability
- Up to 0.05% reference accuracy
- Basic diagnostics
- Local Operator Interface
- 4-20 mA HART®, WirelessHART® protocol, FOUNDATION™ Fieldbus, PROFIBUS®, 1-5 V Low Power HART®
Tools
Frequently Asked Questions
If you have additional questions related to Rosemount Pressure Transmitters, please contact us.
A pressure transmitter is a device that measures pressure and converts that measurement into an electrical signal. The electrical signal is often transmitted to a control system, effectively communicating the pressure measurement for control or monitoring purposes.
All pressure transmitters include a pressure sensor that measures the pressure of a process and electronics to output that pressure measurement as an electrical signal. Pressure transmitters can vary in the sensing technology used and the type of electrical output.
Pressure transmitters should be chosen to fit your specific applications. In choosing, you must consider the application requirements for things like measurement type, pressure range, accuracy, material compatibility and mounting considerations. Different pressure transmitters may offer different options for these considerations. Tools like DP Level Sizing & Selection Tool and DP Flow Sizing & Selection Tool can assist with proper transmitter selection.
Pressure transmitters can be categorized by several different ‘type’ categories but the most common is by pressure measurement type. Measurement type refers to what type of pressure measurement is being made, of which the options are absolute pressure (reference to vacuum), gauge or gage pressure (reference to atmosphere) or differential pressure (difference between two process pressures). There are also multivariable measurement type transmitters which can measure more than one of these pressure measurement types as well as additional measurements like temperature.
Pressure transmitters are often specified for specific applications, with factors like pressure range, pressure measurement type, materials of construction and output being key factors to consider. Generally, pressure transmitters that measure gauge pressure, have SST wetted materials, and utilize a 4-20 mA HART output signal are the most common, but there are many different options available to accommodate any application.
Calibrating a pressure transmitter involves applying a known accurate pressure to the transmitter and comparing the transmitter pressure output to that known applied pressure. If the difference between those values is outside of desired tolerance, apply a sensor trim to the transmitter to correct the difference. If the difference is within desired tolerance, no sensor trim is needed, this would be considered a calibration verification.
Pressure transmitters and pressure transducers are very similar devices, but differ in the final electrical signal they output. A pressure transducer converts a pressure sensor measurement into a simple voltage signal, which lacks linearization and temperature compensation. A pressure transmitter goes a step further by compensating, linearizing and amplifying the electrical signal and outputting as common signal types like analog 4-20 mA or digital communication protocols.