Compact turbocharger speed and temperature sensor

The new turboSPEED DZ140 turbocharger speed and temperature sensor system operates on the eddy current non-contact measuring principle and so is resistant to oil and dirt - a major advantage over optical speed measurement systems. The system is robust, compact in dimension, with a 3mm diameter sensor and a controller that weighs just 85g. This allows the sensor and controller to be installed in engine compartments where space is tight.

Micro-Epsilon's turboSPEED DZ140 is a turbocharger rotation speed (and temperature) sensor and controller, which enables measurements on turbocharger blades made from aluminium or titanium. As well as being able to measure the rotational speed of a turbocharger, the DZ140 also enables the user to measure the temperature of the sensor head/tip - which is claimed to be an industry first. This new feature is particularly useful as it allows the user to monitor the temperature inside the turbocharger without having to fit a separate thermocouple.

Like its predecessors, the DZ140 sensor enables measurements on blades with spacing of up to 2.2mm, at speeds of 200rpm up to 400,000rpm. The sensors offer a high ambient operating temperature of up to 285degC.

Due to its 9-30V DC power supply, the turboSPEED DZ140 can also be used for on-vehicle testing. The sensor system can be powered off a standard vehicle battery.

The robust controller extends the maximum distance allowed between the controller and sensor to 10m. During development of the turboSPEED DZ140, the primary focus was placed on resistance to electromagnetic interference, which means the system is more reliable for multiple test cell environments and for on-vehicle testing.

Chris Jones, Managing Director at Micro-Epsilon UK comments: "The DZ140 was developed very much with the user in mind, which is why the system is now much easier to configure and set up. No adjustment or re-calibration is required when a sensor is replaced. In addition, all parameter settings are now carried out via the front plate of the controller. For example, a tricolour LED indicates when the sensor has reached the ideal distance from the turbocharger blades, reducing installation times significantly. The number of turbocharger blades can also be adjusted on the front of the controller."

For more information on the turboSPEED DZ140 turbocharger speed sensor, please email [email protected] or visit the website at www.micro-epsilon.co.uk.