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Under-Rim Tire Monitors
Comatra’s Tire Pressure Monitoring System (TPMS) extends tire life, reduces compaction and saves fuel. Unlike other systems on the market that plug into the tire stem cap, Comatra’s sensor mounts behind the rim. That keeps it from being knocked off, and protects it from manure and other corrosive materials.
  “Valve cap-end sensors often have to be moving a certain speed to activate the system,” says Luc Pirard, Comatra. “With our system, you turn on the vehicle and in less than a minute, you have a pressure reading on all tires.”
  Checking pressure and temperature is easy. The wireless system uses a small in-cab monitor that can be programmed for desired pressure. The 12-volt monitor is about 3 by 2 by 1-in.
  If pressure changes more than 10 percent or temperature exceeds 176° F, an audiovisual alarm alerts the driver. Pirard notes that tire pressure should be checked daily as each day tires lose a little air. Checking pressure with a standard gauge is seen as a hassle and often overlooked.
  Another feature that sets the Comatra TPMS apart from other monitoring systems is its ability to monitor even low-pressure tires. "Stem-mounted sensors can't measure ultra low pressures," says Pirard. "Ours measures from 6 to 101 psi."
  Comatra introduced the TPMS earlier this summer. While evaluating possible distributors, the company is selling the system direct. A set of 4 valve sensors and the monitor sell for $489. A TPMS with 6 sensors is priced at $606. The systems are designed specifically for agricultural wheels. They fit the universal TR618A rim hole, or its European counterpart, found on agricultural equipment worldwide.
  "The cost is well worth it if you can extend the life of large tractor tires that cost thousands of dollars each," says Pirard. "That’s without considering savings in fuel, compaction and down time."
  Contact: FARM SHOW Followup, Luc Pirard, Comatra, Hogeweg 33, Ordingen 3800, Belgium (ph 32 11 68 22 39; info@comatra.be; www.comatra.be).

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2012 - Volume #36, Issue #6