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Stack TPMS:
Tyre Pressure Monitoring Systems |
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| Stack TPMS - wireless, batteryless and compact. Completely re-defines tyre pressure monitoring in Motorsport: racing applications, cars, trucks & bikes. |
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Accurate tyre pressures are a proven performance enhancer, delivering consistent performance advantages in all levels of motorsport. Dynamic tyre pressure monitoring while out on the track allows the team to optimise tyre performance over the whole lap and whole run.
Key Features |
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- No battery or complicated sensor electronics - providing unrivalled reliability
- No user maintenance required during full service life – significantly lower total life operating costs
- Detect slow punctures long before the driver feels them, and long before catastrophic tyre failure
- One module interrogates 1, 2 or 4 wheels – suitable for cars, trucks and bikes
- Models available with 1Hz, 5Hz, or 10Hz sampling
- Specialist high sampling rate modes – up to 40Hz on one wheel
- Supports virtually unlimited number of wheel sets
- Secure operation – each sensor has a unique serial number to ensure other teams cannot interrogate it remotely
- Small, light sensor - 18 mm x 14mm; only 10g
- Compact, lightweight module – 100mm x 72mm x 24mm; 140g
- Pressure and Temperature data output on user configurable CAN bus.
- 52mm gauge provides comprehensive pressure and temperature information and alarm warnings
- Calibration information is held in each sensor – no need to upload calibration tables into each interrogator module.
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Stack’s Batteryless and wireless TPMS (Tyre Pressure and Temperature Monitoring System) completely re-defines tyre pressure monitoring in motorsport. Based on patented SAW sensor technology, the problems associated with mounting batteries and complicated electronics in sensors on wheels have at last been completely eliminated. Each wheel sensor comprises of a 2mm thick x 12mm diameter SAW pressure/temperature sensor and an antenna, in a 18mm diam. x 14mm cylindrical housing weighing 10g - the smallest and lightest sensor on the market!
We use, under exclusive licence for Motorsport, Transense Technologies' patented Surface Acoustic Wave (SAW) sensor technology which offers wireless, batteryless and compact operation. SAW Sensors are passive (no power required), wireless, low cost, rugged, and extremely small and lightweight, making them well suited for measuring pressure, temperature & torque (strain) in moving objects (e.g. tyres, drive shafts etc.). These characteristics offer significant advantages over technologies such as capacitive and piezoresistive sensors, which require operating power and additional electronics to make a wireless connection.
Benefit of "battery-less":
- Smaller, lighter (less than 3g)
- Technology much better suited to extreme conditions
- Will not run out and require replacing
- Does not damage tyre
- Cheaper
- No recycling issues in disposing of batteries
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The SAW pressure & temperature sensor can be easily integrated into a racing wheel with excellent results. These systems enable the user to measure the pressure in each tyre up to 20 or more times per second. These higher sampling rates can be used to improve chassis set-up, as well as provide an early prediction of tyre failure.
Installation
Each wheel sensor is mounted internally on the wheel rim or valve. The Interrogator Module is mounted in a convenient location on the vehicle, and 4 antennas are each mounted locally to each wheel (within approx 0.5m of the wheel), and connected to the Interrogator Module by RF cable. The CAN data output can be connected to the 52mm colour LED display gauge or any standard data acquisition or driver display system supporting CAN.
Operation
The interrogator module takes readings of tyre pressure and sensor (air) temperature from each wheel sensor continuously at a pre-defined rate between 1Hz and 10Hz. Pressure and temperature data for each wheel is output on CAN bus, with user configurable CAN-ID messages.
System Schematic

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| Applications |
- Motorsport - cars, trucks and bikes
- Commercial vans & trucks
- Military
- Off road tactical vehicles
- Personnel carriers
- HDVs
- Public transportation - buses and coaches.
- 4x4 and 6x6
- Construction industry plant
- Agricultural machinery
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Specifications |
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Pro |
Lite |
Units |
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| PRESSURE MEASUREMENT |
| Range |
0-45 or 0-150 |
0-45 or 0-150 |
PSI |
| Accuracy (45 PSI range at 1Hz) |
± 0.125, 0.25
or 0.50 |
± 0.50 |
PSI |
| Resolution (45 PSI range at 1Hz) |
± 0.05, 0.10 or
0.25 |
0.25 |
PSI |
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| TEMPERATURE MEASUREMENT |
| Range |
20-100,125 or
150 |
20-100, 125 or
150 |
°C |
| Accuracy (1Hz) |
± 1.0 |
± 1.0 |
°C |
| Resolution (1Hz) |
0.5 |
0.5 |
°C |
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| OUTPUTS |
| CAN |
✓ |
✓ |
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| Logger Output |
✓ |
✓ |
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| ANTENNA |
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| Type |
Dual Band |
Single Band |
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| Dimensions (L x W x H) |
140 x 60 x 23 |
115 x 20 x 3 |
mm |
| Connector |
SMA |
SMA |
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| INTERROGATOR MODULE |
| Housing Material |
Aluminium |
Aluminium |
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| Finishing, Colour |
Hard Anodised,
Black |
Hard Anodised,
Black |
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| Main Connector |
MIL AS 6 Pin |
Mini Sureseal |
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| RF Connectors |
Panel SMA |
Panel SMA |
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| Size (L x W x H) |
100 x 80 x 24 |
100 x 80 x 24 |
mm |
| Weight |
140 |
140 |
g |
| Operating Temp |
-20 to +80 |
0 to +70 |
°C |
| IP Rating |
IP67 |
IP67 |
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| Supply Voltage |
8-20 |
8-20 |
V |
| Average Current |
360 |
360 |
mA |
| Peak Current |
1200 |
500 |
mA |
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| SYSTEM CONFIGURATION |
| PC Link |
USB-Serial |
USB-Serial |
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| Maximum Wheelsets |
Up to 100 x 4
wheels |
Up to 3 x 4
wheels |
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| Auto-detect Wheel Change |
✓ |
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| Config. CAN MSG-Ids |
✓ |
✓ |
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| SENSORS |
| Weight |
10 |
10 |
g |
| Operating Temp Range |
20 - 100, 125
or 150 |
20 - 100 |
°C |
| Antenna |
Whip |
Whip |
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| MEASUREMENT RATES |
| Data Output Rate |
1,5,10, 20, 40 |
1 |
Hz |
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| DRIVER DISPLAY |
| Display Type |
52mm
LED Gauge |
52mm
LED Gauge |
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| Individual Pressure/Temp. Display |
✓ |
✓ |
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| Low/High Pressure Alarms |
✓ |
✓ |
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| Low/High Temp. Alarms |
✓ |
✓ |
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| Cold Tyres Warning |
✓ |
✓ |
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Product Details
| TPMS Lite Monitoring
System |
| ST9351 |
TPMS Lite 4 Wheel Tyre Pressure
& Temperature Monitoring System |
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| TPMS Lite Sensor Kits
& Spare Parts |
| ST9302-4 |
Additional 4 wheel TPMS Sensor
& Valve stem kit |
| ST9302 |
Replacement TPMS Lite Sensor
(valve stem not included) |
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| TPMS PRO Interrogator Modules |
| ST9311 |
4 Ch PRO 1Hz Interrogator Module (1Hz/ch; 0.25 PSI resolution) |
| ST9312 |
4 Ch PRO 1Hz Interrogator Module (1Hz/ch; 0.10 PSI resolution) |
| ST9313 |
4 Ch PRO 5Hz Interrogator Module (5Hz/ch; 0.10 PSI resolution) |
| ST9314 |
4 Ch PRO 10Hz Interrogator Module (10Hz/ch; 0.10 PSI
resolution) |
| ST9316 |
4 Ch PRO 1Hz Interrogator Module (1Hz/ch; 0.05 PSI resolution) |
| ST9317 |
4 Ch PRO 5Hz Interrogator Module (5Hz/ch; 0.05 PSI resolution) |
| ST9318 |
4 Ch PRO 10Hz Interrogator Module (10Hz/ch; 0.05 PSI
resolution) |
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| 45PSI / 3 Bar TPMS
Sensors |
| ST9302 |
45PSI/3Bar, +/- 0.5PSI (@1Hz) TPMS Sensor
(over 20-100C temp
range) |
| ST9303 |
45PSI/3Bar, +/- 0.5PSI (@1Hz) TPMS Sensor
(over 20-125C temp
range) |
| ST9304 |
45PSI/3Bar, +/- 0.25PSI (@1Hz) TPMS Sensor
(over 20-100C temp
range) |
| ST9305 |
45PSI/3Bar, +/- 0.25PSI (@1Hz) TPMS Sensor
(over 20-125C temp
range) |
| ST9306 |
45PSI/3Bar, +/- 0.25PSI (@1Hz) TPMS Sensor
(over 20-150C temp
range) |
| ST9307 |
45PSI/3Bar, +/- 0.125PSI (@1Hz) TPMS Sensor
(over 20-100C temp
range) |
| ST9308 |
45PSI/3Bar, +/- 0.125PSI (@1Hz) TPMS Sensor
(over 20-125C temp
range) |
| ST9309 |
45PSI/3Bar, +/- 0.125PSI (@1Hz) TPMS Sensor
(over 20-150C temp
range) |
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| 150 PSI / 10 Bar TPMS
Sensors |
| ST9352 |
150PSI/10Bar, +/- 0.5PSI (@1Hz) TPMS Sensor
(over 20-100C temp
range) |
| ST9353 |
150PSI/10Bar, +/- 0.5PSI (@1Hz) TPMS Sensor
(over 20-125C temp
range) |
| ST9354 |
150PSI/10Bar, +/- 0.25PSI (@1Hz) TPMS Sensor
(over 20-100C
temp range) |
| ST9355 |
150PSI/10Bar, +/- 0.25PSI (@1Hz) TPMS Sensor
(over 20-125C
temp range) |
| ST9356 |
150PSI/10Bar, +/- 0.25PSI (@1Hz) TPMS Sensor
(over 20-150C
temp range) |
| ST9357 |
150PSI/10Bar, +/- 0.125PSI (@1Hz) TPMS Sensor
(over 20-100C
temp range) |
| ST9358 |
150PSI/10Bar, +/- 0.125PSI (@1Hz) TPMS Sensor
(over 20-125C
temp range) |
| ST9359 |
150PSI/10Bar, +/- 0.125PSI (@1Hz) TPMS Sensor
(over 20-150C
temp range) |
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| Display Module, Cables
and Mounting Accessories |
| ST9330 |
52mm TPMS LED Display Gauge |
Cables
and display gauge mounting accessories available. Please contact your Stack dealer for details. |
In the interests of continuous product improvement, we reserve the right to alter without notice the specifications and features described above. Please contact us for further information: sales@stackltd.com. |
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This page last revised
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| Frequently Asked Questions |
| Further information can be found in our Troubleshooting Knowledgebase and FAQ sections.
Your Stack dealer will be happy to assist you further. |
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