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Stack TPMS:
Tyre Pressure Monitoring Systems
 
Click for details on: Stack Batteryless TPMS: Special commendation at World Motorsport Symposium 2011.
“...exceptionally innovative technology developed in the UK
 by a well-regarded company”
 

Stack TPMS - wireless, batteryless and compact. Completely re-defines tyre pressure & temperature monitoring in Motorsport.

 
Stack's wireless, batteryless and compact TPMS. Accurate tyre pressures are a proven performance enhancer, delivering consistent performance advantages in all levels of motorsport.

 

Accurate tyre pressures are a proven performance enhancer, delivering consistent performance benefits in all levels of motorsport. Taking a car to the grid with tyres at optimum temperature and pressure is an known advantage in the opening laps of a race.

Also, 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


Stack TPMS sensor dimensionStack’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 21mm diam. x 16mm cylindrical housing weighing 15g - the smallest and lightest sensor on the market!

 

Benefits of Stack TPMS:

 

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.

 

Benefits of "batteryless":

 

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.

Uniquely, the Stack TPMS system allows higher sampling rates to be used without fear of shortening sensor life. The benefits of higher sampling rates e.g. 10Hz are:

 

Installation
Each wheel sensor is mounted internally either on the rear of the valve stem or directly on the wheel rim.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 supplied configuration software features a comprehensive set of tools to assist in antenna setup.

 

Configuration
The unit can be configured over a standard RS232 link from the PC using the supplied PC configuration software. The easy to use software can be used to set CAN IDs, monitor values in real time, authorized sensors, set calibrations and import sensors to the system's library (database). There is also an atmospheric pressure offset to fine tune the system to the day's environmental conditions.

 

Operation
TPMS isplay guageThe 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.

The CAN data output can be connected to the 52mm colour LED display gauge or any standard Data Logging or driver display system supporting CAN.

 

Run-Flat Inserts
Stack's batteryless TPMS fully supports Run-flat Tyre Support Inserts (TSI). " Run-Flats" allow the vehicle to be driven with one or more flat tires - eliminating the immediate need to change tyre, important in military, first responder and high value freight vehicles .

Run-flats must only be installed on a car which has TPMS. TPMS alerts the driver to a puncture so they are aware that they have a limited time running on Run-flats until they have to replace their tyre. Stack TPMS maximizes that limited time by detecting problems with the tyre as early as possible.

 

Data Logging
Click to enlargeThe CAN data output can be fed into any compatible system. The data shown here was recorded with Stack's MFR system and displayed in Stack's easy-to-use DataPro 5.

The software allows data sets to be viewed in combination with other parameters to determine optimum tyre pressures and temperatures (click thumbnail to view full screen).

View Customer's sample data

 

Stack TPMS: Pro or Lite?
Stack TPMS is available in two variants: "Pro" and "Lite". The Pro system offers greater resolution and accuracy over the Lite system.

The RFID wheel management facility, including automatic detection of wheel changes, is only available on the Pro system - important if wheels are regularly changed (TPMS Lite is able to "hot swap" three sets of wheels whereas TPMS Pro can handle up to 100 wheelsets).

An expanded CAN-bus capability is also a feature of the Pro system.

Full specifications - click here

 

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System Schematic
TPMS Car Schematic

 


Applications


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Specifications
  Pro Lite Units
 
PRESSURE MEASUREMENT
Range
0-45 or 0-150
0-45
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
TEMPERATURE MEASUREMENT
Range
20-100,125 or 150
20-100
°C
Accuracy (1Hz)
± 1.0
± 1.0
°C
Resolution (1Hz)
0.5
0.5
°C
OUTPUTS
CAN
Logger Output
ANTENNA
Click to enlarge
Click to enlarge
Type
Dual Band
Dual Band
Dimensions (L x W x H)
140 x 60 x 23
140 x 60 x 23
mm
Connector
SMA
SMA
INTERROGATOR MODULE
Housing Material
Aluminium
Aluminium
Colour
Black
Black
Main Connector
MIL AS 6 Pin
Mini Sureseal
RF Connectors
Panel SMA
Panel SMA
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
Supply Voltage
8-20
8-20
V
Average Current
360
360
mA
Peak Current
1200
500
mA
SYSTEM CONFIGURATION
PC Link
USB-Serial
USB-Serial
Maximum Wheelsets
Up to 100 x 4 wheels
Up to 3 x 4
wheels
Auto-detect Wheel Change
Config. CAN MSG-Ids
SENSORS
Weight
15
15
g
Operating Temp Range
20 - 100, 125 or 150
20 - 100
°C
Antenna
Whip
Whip
MEASUREMENT RATES
Data Output Rate
2, 10 & Specialist
2
Hz
DRIVER DISPLAY
Display Type LED Gauge
Option
Individual Pressure/Temp. Display
Low/High Pressure Alarms
Low/High Temp. Alarms
Cold Tyres Warning

 

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Product Details
TPMS Lite Monitoring System
ST9351 TPMS Lite 4 Wheel Tyre Pressure & Temperature Monitoring System (includes 4 TPMS valve stems)
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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 Lite Interrogator Modules
ST9310 4 Ch LITE 2Hz "Positioned Sensor" Interrogator Module
(2Hz/ch; 0.1 PSI resolution)
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TPMS Pro Interrogator Modules
ST9312 4 Ch PRO 1Hz Interrogator Module
(1Hz/ch; 0.10 PSI resolution)
ST9318 4 Ch PRO 10Hz Interrogator Module
(10Hz/ch; 0.05 PSI resolution)
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TPMS Lite & PRO Dual-band Antennas
ST9320

On-vehicle dual-band PRO Antenna - rear entry SMA connector
(0-85°C temp range)

ST9321 On-vehicle dual-band PRO Antenna - side entry SMA connector
(0-85°C temp range)
ST9323 On-vehicle dual-band PRO Antenna - rear entry SMA connector
(0-140°C temp range)
ST9324 On-vehicle dual-band PRO Antenna - side entry SMA connector
(0-140°C temp Range)
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45PSI / 3 Bar TPMS Sensors
(requires separate TPMS valve stem - see below)
ST9302 45PSI/3Bar, +/- 0.5PSI (@1Hz) TPMS Sensor
(over 20-100°C temp range)
ST9305 45PSI/3Bar, +/- 0.25PSI (@1Hz) TPMS Sensor
(over 20-125°C temp range)
ST9308 45PSI/3Bar, +/- 0.125PSI (@1Hz) TPMS Sensor
(over 20-125°C temp range)
ST9309 45PSI/3Bar, +/- 0.125PSI (@1Hz) TPMS Sensor
(over 20-150°C temp range)
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150 PSI / 10 Bar TPMS Sensors
(requires separate TPMS valve stem - see below)
ST9352 150PSI/10Bar, +/- 1.0PSI (@1Hz) TPMS Sensor
(over 20-100°C temp range)
ST9355 150PSI/10Bar, +/- 0.5PSI (@1Hz) TPMS Sensor
(over 20-125°C temp range)
ST9358 150PSI/10Bar, +/- 0.25PSI (@1Hz) C46TPMS Sensor
(over 20-125°C temp range))
ST9359 150PSI/10Bar, +/- 0.25PSI (@1Hz) TPMS Sensor
(over 20-150°C temp range)
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TPMS Valve Stems
ST913911 11mm TPMS Valve Stem
  includes M5 vented hex screw & Schnoor washer
ST913908 8mm TPMS Valve Stem
  includes M5 vented hex screw & Schnoor washer
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Display Module, Cables and Mounting Accessories
ST9330 52mm TPMS LED Display Gauge
ST264803 52mm Roll-Bar Pod for 40mm diameter Roll-Bars
ST264809 52mm Gauge Pedestal Mount Kit
ST262121 52mm Carbon Fibre Gauge Pedestal Mount Kit
ST9391-100 RF antenna cable 1.0m (5mm diam. rated to 85°C)
ST9391-200 RF antenna cable 2.0m (5mm diam. rated to 85°C)
ST9391-300 RF antenna cable 3.0m (5mm diam. rated to 85°C)
ST9391-400 RF antenna cable 4.0m (5mm diam. rated to 85°C)
ST9399-XXX RF antenna cable custom length (specify XXXcm when ordering)
(5mm diam. rated to 85°C)
ST9394-100 RF antenna cable 1.0m (5mm diam. rated to 200°C)
ST9394-200 RF antenna cable 2.0m (5mm diam. rated to 200°C)
ST9394-300 RF antenna cable 3.0m (5mm diam. rated to 200°C)
ST9394-400 RF antenna cable 4.0m (5mm diam. rated to 200°C)
ST9394-XXX RF antenna cable custom length (specify XXXcm)
(5mm diam. rated to 200°C)
ST9395-100 RF antenna cable 1.0m (3.3mm diam. rated to 200°C)
ST9395-200 RF antenna cable 2.0m (3.3mm diam. rated to 200°C)
ST9395-300 RF antenna cable 3.0m (3.3mm diam. rated to 200°C)
ST9395-400 RF antenna cable 4.0m (3.3mm diam. rated to 200°C)
ST9395-XXX RF antenna cable custom length (specify XXXcm)
(3.3mm diam. rated to 200°C)
ST9392-100 Interrogator to Display Cable assembly 1.0m
ST9392-200 Interrogator to Display Cable assembly 2.0m
ST9392-300 Interrogator to Display Cable assembly 3.0m
ST9392-XXX Interrogator to Display Cable assembly custom length
(specify XXXcm)
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Supported Units
Region EC Bar, DegC, km/h, km
Region UK PSI, DegC, MPH, miles
Region US PSI, DegF, MPH, miles

 

 

Brochures

TPMS Lite & Pro Overview (inc Specifications)

TPMS Pro Data Sheet



Installation Guides

TPMS Lite

TPMS Pro

 

Software

TPMS Lite & Pro Configuration Software

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Contact Us

UK & International

UK & International


T: +44(0)1869 240404
F: +44(0)1869 245500
E: sales@stackltd.com
 

Stack Ltd.
10 Wedgwood Road
Bicester OX26 4UL
UK

   

 

USA


Toll Free T:
(888) 867 5183
F: (888) 364 2609
E: sales@stackinc.com


Stack, Inc.
413 West Elm Street
Sycamore, IL. 60178
USA

     

 

 

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

 

This page last revised


Frequently Asked Questions

Further information can be found in our TPMS Troubleshooting Knowledgebase.

Your Stack dealer will be happy to assist you further.

Click
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Download Data Sheet here.

Download brochure here.

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Copyright © 2013 Stack Limited.
Stack is a world-leading supplier of dashboard instruments, Data Logging, batteryless TPMS & ruggedised video systems to motorsport, automotive, industrial and test customers worldwide.
Registered in England & Wales.
No. 6292480

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  In the interests of continuous product improvement, we reserve the right to alter without notice the specifications and features described above.