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RPM Phantom

The RPM Phantom sensor is an easy way to keep track of the velocity of your fans, rotors or engines without taking the risk of being close to them. Here we will show you how to easy install the sensor on your machines and how to assign to a Machine on DigivibeMX 11.

 

We will cover just the physical installation and configuration settings. For the Database registry visit the Phantom Wizard tutorial.

 

Hall Effect Sensor

To work, the sensor uses an electromagnetic effect called Hall effect and needs a special sensor to achieve this measurement. This sensor is included when you buy an RPM Phantom sensor and it’s a 2 meters (6.56 Ft) line with a T head on one side and a LEMO connector in the other.

The pack also includes a neodymium magnet with 12 mm (~ 0.5 inches) in diameter. This magnet creates the magnetic field necessary for the sensor to work properly. (Also, we will send you a spare magnet).

 

Installing the RPM Phantom 

To achieve correct measurements using the RPM Phantom Sensor there are some considerations we need to understand. The first step to follow is to attach the magnet to the surface of your machine with the North Pole facing out of the machine. Be sure to attach it very firmly so the centrifugal force would not shoot out the magnet.

An easy way to know which pole are you looking at, is to compare the magnet with our magnetic key (the one which reset the phantom). All magnetic keys have the south pole facing towards the key, this means if one face of your magnet feels attracted to the key, that face it’s the North Pole.

Once done, locate the sensor with the bump side facing towards the magnet with a maximum distance of about 1 cm (0.3 inches). If located farther than this, the sensor could have some difficulties to read the correct velocity of the machine.

 

 

DigivibeMX Configuration

Once you got your RPM Phantom Sensor attached to your machine, you can configure your machine to hold this sensor. We have two possible configurations: Set on Point or Set on Machine.

Set on Machine

To achieve this you need to right click on the machine you want and then click Configure to open the Machine Configuration window. There you can find several options, one of them being Extra Parameters.

Click the plus (add) symbol and this will display the Add parameter window, where we can find new options for data analysis with Phantom Sensors. On the left side, we can see a list of Phantom Sensors with different groups of analysis, and the left side will show options to name and describe the sensors. Here select the RPM group and then click Set Phantom.

This will display the Set device window. Here the sensor groups we created before being displayed. Select the desired option and this will show us just the sensor types we’re looking for. In this example, we can only find RPM Phantom Sensors.

Select the sensor you need from the list and mark the Activate check box. Then click OK. This will send you back to Add parameter window, click OKagain to close, and finally click OK in the Point Configuration window to end.

 

Set on Analysis Point

To add a sensor to an analysis point is needed to right lick the machine you want to change. Click on Configure and here you will find your analysis points with the button Set. Click the button to open the Phantom Configuration Window where you can find several options for this point. To add a Temperature Phantom, click the add button in the Extra Values area.

The Add parameter window will appear and display options for data analysis with Phantom Sensors. On the left side, we can see a list of Phantom Sensors with different groups of analysis. The left side will show options to name and describe the sensors. Here select the RPM group and then click Set Phantom.

This will display the Set device window. Here the sensor groups we created before being displayed. Select the desired option and this will show us just the sensor types we’re looking for. In this example, we can only find RPM Phantom Sensors.

Select the sensor you need from the list and mark the Activate check box. Then click OK. This will send you back to Add parameter window, click OK again to close, and finally click OK in the Point Configuration window to end.

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