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The new HiPreMa 4X products line

We have updated the entire HPM4 product line. HPM4 X was born !!

What's more accurate than HPM 4?
It's HPM 4X !!

The mechanical part is the same, we have re-designed the electronic part of all the instruments.

Presentazione delle nuove caratteristiche tecniche della linea HiPreMa 4 X

All the electronics have been redesigned, moving from an 8-bit micro controller to a 32-bit micro controller. Thanks to this change in technology, the computational speed of the instrument is 4 times faster than the old one. This update allows us to improve the accuracy of the instruments in tire pressure and temperature measurements and to implement new functions across the entire line of instruments.


What's news in the Pressure measurement features.

Tire pressure and Temperature in motorsport are fundamental parameters in order to improve the performance on the track. For this reason we have improved the accuracy of our instruments even more. It is no longer enough for us to be accurate to the hundredth of a bar. Now our reference is the micro bar, 4 digits after the decimal point.

An even more extreme precision made possible by the calculation capacity of the new electronics.

La Prisma Electronics è partner tecnico della Aprilia Racing Team nel campionato del Mondo Moto Gp.

The calibration of the instruments is carried out with a Pressure Reference of 0.0001 Bar.


A very useful feature that has been introduced is the ability to save the vehicle number for each session. For each session saved in the instrument's memory, in addition to the date and time of the session, atmospheric air temperature, cold and hot pressures and relative variation, it is possible to activate the storing of the vehicle number. This is a very useful function for the technicians who deal with tires in the Teams, for the technicians of the various tire manufacturers who have to manage the data of different cars. Also, with HPM4 X, the instrument memory can save up to 50 complete sessions. A complete race weekend stored in the instrument.

The PRESSURE-SHOT function has been optimized, which allows you to automatically save hot tire pressures without having to press any buttons.


The main features of the HPM 4X line for the digital tire pressure gauge are: (Updated functionality on all instruments with pressure measurement mode)

  • Measurement accuracy : +/- 0.0005 Bar - +/- 0.007 PSI
  • 50 complete sessions saved in the internal memory of the instrument
  • Saving vehicle number for each session
  • 32-bit Technology with computational speed 4 Times faster than the old one 
Nella foto visualizzazione della differenza tra le Pressioni a freddo ed a Caldo che si hanno alla fine di una sessione in pista. Questo valore è importante per capire l'equilibrio dinamico del mezzo ed il carico che si ha su ogni singolo pneumatico

The display shows of the difference between the cold and hot pressures for each session and the relative difference. This value is important to understand the dynamic balance of the vehicle for each tire.

Updates in Temperature measurement features.

In addition to pressure, the fundamental parameter for understanding and optimizing tire performance is their operating temperature. It is essential to stay within the correct window of use of the tread temperature to optimize mechanical grip and keep tire wear under control.

It is important to measure the temperature of the compound quickly; We have halved the reading time of the thermocouple, now in less than 100 milliseconds the instrument reads the temperature of the thermocouple or the infrared sensor.

From today our pyrometers, both with needle probe and infrared sensor, have a Temperature measurement resolution of 0.1°C and a Measurement error of 0.25°C.

What's the difference in the Temperature measurement ?

  • Temperature Resolution : 0.1 °C
  • Temperature Accuracy : +/- 0,25 °C
  • Reading time - Thermocouple - Infrared sensor : 0,1 sec.
  • 50 Complete sessions saved in the internal memory of the instrument
  • Saving vehicle number for each session
  • 32-bit Technology with computational speed 4 Times faster than the old one   

Nella foto misura della pressione nelle moto con il manometro digitale di precisione della Prisma Electronics

Tire Temperature measurement with measurement resolution of 0.01 ° C and accuracy of +/- 0.25 ° C

News features for the Multi-riders Stopwatch 

The unique multi-rider stopwatch on the market that allows you to store 7 complete sessions in the instrument's memory.

The part of the 4 Pilots digital stopwatch has a new firmware that allows to have new functions implemented. Up to 7 complete sessions can now be stored in the instrument.
For each session it is possible to store 30 laps per rider and nine split times per lap as well as the date and time of the session and air temperature.

From the menu it is possible to recall, for each session, the three best laps for each driver in the first screen and subsequently it is possible to review all the laps of the session and related split times. By memorizing seven sessions we have a complete day of testing in the memory of the instrument.

In total the instrument stores 840 laps.

The new features in the stopwatch function (present in all instruments that have the Stopwatch mode):

  • 7 Complete sessions can be saved in the memory. For eachs session it is possible to save also Time - Date - Air Temperature
  • 1 Screen that resume quickly the 3 Best Laps of the session for each Driver and relative Split Times
  • Recall of all Laps of the session and relative Split Timers (Max. 30 giri laps per session per Driver)
  • The Stopwatch can save 840 Laps + 7560 Split Times

Cronometro multi pilota

The Display shows the current session ( Test 07 ) in the Stopwatch mode - 7 complete Sessions that can be stored in the instrument.

#PrismaElectronics #HPM4

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