Promag P 300 is among some of the better magmeters in the market. The procedure to setup the information on the display is relatively simple. There are however, a couple different ways to do this. For example, you can go through the local buttons or the digital protocol.

Display information on the PROMAG P 300

There is a lot of information on the PROMAG P 300 display. Even more so, the flow meter provides 4 different ways to display the information on the screen. For example, we can have only the value or a bar graph with the value. Furthermore, we can show 2 different values or a value-large plus two values. Accessing these functions is straightforward as well.

Proline Promag P 300 Electromagnetic flowmeter for high medium temperatures
in the shop
Promag P 300

Setting up the PROMAG P display

On the Promag display, one needs to go to the principal menu using the local buttons and select the option display/operation. In display/operation, we need to click on display. At this time we will see 4 choices. As we have mentioned before the choices will be 1 value, max; Bargr+1 value, 2 values, and Val. large+2 values.

We would suggest to figure out which one is better for your local visualization and select that option. If an operator is responsible for viewing this information, we should ask them how they want their display set up. Depending on the format, we will have a bunch of information available to show, such as volume flow, mass flow, flow velocity, corrected volume flow, totalizer, current output and so on.

If we want to setup the display through the web server, we will need to have an Ethernet cable and a laptop to connect it. The factory setting IP is and the access code is 0000. Don’t worry, we can change both of these numbers afterwards. The user experience setting up the device through the web server is outstanding. We won’t have any problems navigating through the menu because the options are the same on the web server.

To know more about magameters, you can read the Visaya Article on when should we use a magmeter


The seamless integration is a relevant point to discuss! If we don’t have a clear connection between the field device and your control system you can lose a lot of benefits provided by diagnostic and remote configuration. However, if we don’t have a digital input, you need to know the different ways you can read the field information. People have the option to read field information via 4-20mA, pulse, or frequency. Then again, it really just depends on your requirements.

Old School Analog

With the new flow meter from Endress+Hauser you have a bunch of different ways to integrate all your information into the control system without too much effort. First, let’s talk about the analog method to connect the transmitter to the control system. The Promag P 300 has different ways to do that. You can use the 4-20mA active and passive option, Pulse, frequency, switch output, or relay.

Those are the “analog” ways to integrate the flow meter to the control system. Which one you use depends on your company and input options on the control system. Do a little research and choose the best one for your situation.

New School Digital

If we have digital communication with field devices, we also have a bunch of options available. A few include HART communication, Foundation Fieldbus, PROFIBUS PA, and Modbus RS485. For sure, there is no lack of choices here. As a result, we can choose the best one to fit an application.

As soon as protocol options are launched, the PROMAG P 300 will cover the majority of the communications on the field. Thus, giving the easiest way to integrate the flow meter to a control system. As a matter of fact, we can choose the flow meter using the online applicator tools from Endress+Hauser or create the order code going to the device’s page on their website.

Flow Measurement Range for the Promag P 300

One of the advantages of this magmeter is that the flow meter doesn’t create pressure loss during your installation. We actually don’t have a restriction when the fluid is passing through the flow meter. Further, the Promag P 300 has 3 different types of liners. We must be particular in choosing a liner that will have a chemical compatibility with your process. Be careful, the wrong liner can dramatically reduce the lifetime of a sensor.

The Promag P 300 has a flow measurement range from 4dm3/min to 9600 m3/h. Now we can see, that’s a decent sized flow measurement range! Further, we have a nominal diameter from 1/2 to 24”. Once we scale out the flow meter based on your process information, you’re gonna have a better idea on what is the best size for your application.  When we are working with a new application you have to scale out the flow meter every time. Unfortunately, we can’t just select the flow meter based on the size of a pipe.

The Applicator

This solution allows you to scale out the sensor based on the momentum and fluid. For example, if we don’t know the right principle for an application the applicator can help you with that as well. We can just fill out the fields asking for information about your process and the software is able to inform you of the possibilities for an application.

If we already know the type of principle and model, we are pretty much set. We can fill in the fields with the process information and select the flow meter you want to scale out. Then the applicator will give us the performance information as well as the right size of the tube needed. The user experience using the application is not too shabby.

To know more about other magmeters like Picomag, you can read the Visaya Product Review

Picomag electromagnetic flow meter from Endress + Hauser Smart electromagnetic flowmeter with wireless remote access
in the shop from 480 €

Maximum temperature of PROMAG P 300

Endress+Hauser has different types of sensors to fit in various segments and applications. Depending on a process information, we can choose a sensor with a smaller or larger range. The price of course will reflect the size we choose.


For example, the PROMAG H is a sensor made for hygienic applications. This sensor is best to use in compliance with specific hygienic requirements for when the flow meter comes into contact with fluid. Further, we can have different kinds of process connections and approvals related to the transmitter or sensor. This sensor, in particular, can support high temperatures as well.


The PROMAG P 300 is a very flexible device. It is fit for applications where you may have requirements like ATEX, IECEX and so on. Beyond that, this Endress+Hauser flow meter has 3 different kinds of liners. Each liner is made for different temperature ranges. Just as a quick recap, the liners are the coating material in the sensor. Liners are the part that is in constant contact with the process fluid.


The PFA liner allows the flow meter to support a temperature range from – 20 to 150 degrees Celsius. Secondly, there is a liner with a special type of PFA material that extends the temperature range to -20 to 180 degrees Celsius. Last but not least, the PTFE liners allows for support in the lower range of temperatures, from -40 to 130 degrees Celsius.


The transmitter model 300 compatible with H and P sensors. Although, the PROMAG E 100 offers more standard temperature support. If a temperature ranges are less extreme and fall within the PROMAG E 100’s range you can choose this option over the PROMAG P 300.

To know more about Promag P 300, you can get in touch with our engineers and we will be happy to help.

Recommended articles