Prisma HPM5 Digital Tire Pressure Gauge with Infrared Pyrometer

The Prisma HPM5 digital tyre pressure gauge with infrared pyrometer helps racers, kart teams and race engineers make faster setup decisions by combining ultra-precise tyre pressure measurement with infrared tyre temperature monitoring in one professional-grade instrument. Fewer guesswork adjustments, more consistent grip, lap after lap.

Available from Harris Race Radios® as a genuine Prisma Electronics product with NZ stock and fast shipping across New Zealand and Australia.

Why Racers Choose the HPM5+PYR-IR

• No calibration required — the internal microprocessor automatically calibrates every time the gauge is switched on, so the reading is reliable every session
• 0.001 BAR / 0.01 PSI resolution — fine enough to see the small pressure changes that move handling
• 12-point infrared tyre temperature measurement — plus track and air temperature, in the same instrument
• 50 stored sessions — pressure and temperature data logged on the gauge, not lost on a scrap sheet
• Wireless app connectivity (iOS & Android) — view, analyse and export your sessions as PDF or Excel
• Custom aluminium tyre chuck — designed by Prisma Electronics to measure without losing air from the wheel valve

That combination is what separates a $599 professional setup tool from a $50 garage gauge: resolution you can trust, data you keep, and readings that are repeatable between sessions and between tyres.

How Tyre Pressure and Temperature Data Improves Your Setup

Tyre pressures tell you what the car or kart is doing now; tyre temperatures tell you why. Consistent 12-point temperature readings across each tyre reveal whether your camber is working the whole contact patch, whether your pressures suit the track, and whether the car is balanced front to rear. That means faster, more accurate camber, pressure and balance changes — and a car that holds its grip deeper into a stint.

Who Uses It?

• Kart teams and karting parents chasing consistent sessions
• Race engineers and driver coaches building setup data
• Club competitors stepping up from analogue gauges
• Professional race teams and endurance crews

Suitable for kart racing, Formula Ford, Formula First, GT and circuit racing, rally, speedway, endurance racing and track days. The HPM5 works as a kart tyre pressure gauge, a tyre temperature gauge for circuit and track-day sessions, and a tyre pressure logger for race engineering debriefs.

Key Features

• Digital tyre pressure gauge HPM5
• Infrared sensor for tyre temperature measurement
• 12-point tyre temperature measurement
• Track and air temperature measurement
• 50 pressure + temperature sessions stored
• Quick functions key for switching between gauge and pyrometer modes
• ABS carry case included

Specifications

• Pressure resolution: 0.001 BAR / 0.01 PSI
• Pressure range: 0 – 7 BAR (100 PSI)
• Tyre chuck: custom aluminium design by Prisma Electronics, ensuring measurement without air loss from the wheel valve
• Product code: HPM5+PYR-IR

Wireless App: Analyse, Download, Share, Export

Connect the HPM5 to the Prisma Electronics app (iOS and Android) wirelessly to view all stored pressure and temperature sessions, then export them as a PDF or Excel file for your setup sheets, engineer debriefs or team records.

Choosing Your HPM5 Model

The HPM5 family shares the same precision pressure platform — you choose how much temperature measurement you add:

• HPM5 pressure gauge — pressure only, the most affordable route
• HPM5 + IR pyrometer (this page) — adds fast, non-contact 12-point tyre temperature readings
• HPM5 + needle probe pyrometer — probe-style core temperature readings
• HPM5 + dual technology pyrometer — both IR and needle in one instrument
• HPM5 + IR pyrometer + stopwatch — full race-day data capture

Pairs Well With

• RaceSense digital tyre gauge & needle pyrometer logger — the alternative route at a lower price point
• AirPro Densimeter — fuel/air monitoring for two-stroke and four-stroke engines
• Browse the full motorsport tyre pressure gauge range

Why Buy From Harris Race Radios?

Harris Race Radios supplies genuine motorsport electronics with NZ stock and fast dispatch across New Zealand and Australia, and our race engineers use this kind of data tooling in our own race cars.

Our team brings real motorsport expertise across both NZ and AU. Rex Harris is a qualified Radio Telecommunications Engineer, Approved Radio Certifier for NZ RSM and AU ACMA, with motorsport experience dating back to 1975 at the Marlboro Series Grand Prix. Aaron Harris is an active racing driver and race engineer - Barcelona 24 Hour 1st in class (2013), Bathurst 1000 and 12 Hour competitor, BMW Race Driver Series Champion (2011), and race engineer for Earl Bamber Motorsport, TekworkX, Matt Stone Racing, and Porsche Carrera Cup Australia/Asia-Pacific/NZ. Aaron is also an MSNZ Licence Examiner for helmets, racewear, FHR, and HANS.

Contact Aaron directly: +64 27 449 9654 | aaron@harriscomms.co.nz

Frequently Asked Questions

Does the HPM5 require calibration?

No. The internal microprocessor automatically performs the calibration procedure every time the gauge is switched on, providing a reliable measurement every session without manual calibration.

What is the difference between infrared and probe pyrometers?

An infrared pyrometer measures the tyre surface temperature instantly without contact, while a needle probe measures the temperature inside the rubber. Surface temperatures respond fastest to setup and track changes, so infrared is ideal for quick session-to-session comparisons; many teams use both. See our HPM5 needle probe version if you prefer probe readings.

How many sessions can it store?

The HPM5 stores 50 pressure and temperature sessions on the gauge, which you can then view and export through the Prisma Electronics app.

Can I export the data?

Yes. Connect wirelessly to the Prisma Electronics app (iOS and Android) to view, analyse and export your stored sessions as a PDF or Excel file.

Is it suitable for kart tyres?

Yes. The 0–7 BAR (100 PSI) range comfortably covers kart operating pressures, and the low-loss aluminium chuck avoids bleeding pressure out of the valve during measurement. Contact us if you would like advice on using it in your karting programme.

Which phones does the app work with?

The HPM5 connects wirelessly to the Prisma Electronics app on both iOS and Android, for viewing, analysing and exporting your stored sessions.

Do you ship to Australia?

Yes. We hold NZ stock and ship to Australia. Contact us for AU shipping rates and lead times.