![]() ![]() Our first large scale campaign occurred at MARTA in Atlanta on 265 New Flyer CNG and 105 diesel buses. We first saw them and characterized them during the implementation of our 1/2 NPT stainless steel upper coolant level switch on NABI buses at New Jersey Transit. ![]() Our M20 X 1.5 stainless steel coolant level sensors were originally designed to replace the plastic OEM upper and lower sensors that began to be installed on transit bus engines in 2013. If you see an option below that best serves your transit agency, or if you need a completely custom solution, contact us online for prices and availability. We’ll work with you to create a custom design that keeps your buses on the road.īelow are some examples of the custom coolant sensor replacements VeriTranz designed-and continues to fabricate as needed. have over 1000 of our sensors installed at this point including SEPTA, Tri-Met, AC Transit and MARTA. With well over 35,000 units installed, this device has a less than 0.2 % failure rate, nearly 400 times better than the OEM device it replaces. Our sensors are currently installed in more than 200 transit agencies in the US and Canada. A special model, our VT220596, with a smaller main bushing and longer pigtail was developed for NOVA Bus, and they have installed about 4600 units to date. After a retrofit of the OEM plastic sensor with an epoxied harness plug and Deutsch 2-way pigtail, we released our VT220594-D, which is a "plug & play" replacement. The part number for this device is VT220594, and it will fit NABI, New Flyer, and Gillig. They are constructed of 304 stainless steel as well, so it will not breakdown due to thermal cycling. addressed both of these concerns with our own coolant level sensors’ improved design. Our floats move in a single plane, making false coding nearly impossible. The OEM sensor may also leak coolant from the electrical terminals at the receptacle due to a large difference in coefficients of thermal expansion between plastic sensor and the stainless-steel surge tank. An unreliable float design can allow the float to hang upside down, indicating a critically low coolant level on a surge tank that is full. The OEM coolant level sensors addressed in 2015 had two main modes of failure: false error coding and coolant leakage. How Our Coolant Level Sensors Solved the Problem If your buses are experiencing similar issues, let us know and we will be happy to assist you with a solution. Our VeriTranz engineers designed and developed custom coolant level sensor replacements and we have shipped over 35,000 of them to more than 210 transit agencies across North America to solve the problem. In the Spring of 2015, VeriTranz was alerted to problems with an OEM plastic lower coolant level sensor found on many NABI, New Flyer, NOVA, and Gillig transit buses that were specified by Cummins in 2013 as a result of the 2013 EPA diesel emissions standards. ![]()
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