The method of using the sensor block of OTC700 series digital multimeter.

When the OTC700 series digital multimeter rotary switch is placed in the sensor (Sensor) gear for measurement, it can be used to test the sensor in 7 modes: CRNK, EGR, MAF, MAG, 02, TPS. In addition to O2 sensors, the detection methods of other sensors are basically the same as the general standard procedures, and can be performed in accordance with the method described in the instructions for the use of multimeter.

 1. Connection method when O2 sensor is detected.

 First,when using OTC700 series automobile digital multimeter to detect O2 sensor, it can be directly connected with ECM (Electronic Control Module) through signal / synthesis port, which can be used to output the measured signal directly to the computer control chip. Real-time control. This detection function is not available in other common instruments of the same kind.

Second, data display and discrimination method.

 When using 0TC700 series automobile digital multimeter to detect O2 sensor, it can automatically identify whether the detected data is normal or not, and display it from left to right through the display lamp. The marks from left to right are: too thin-too thick.

Third, real-time control detection.

 When using the OTC700 series digital multimeter to detect the O2 sensor, if you press the up-arrow button (strong) or the down arrow button (sparse) of the instrument, A 5s enriched or diluted instruction signal will be supplied to the computer control chip. At the same time, the corresponding display light will also be lit, and there is also a corresponding display signal on the panel, which is used to indicate the amount of compensation to be made up under the current conditions. Automotive electronic control system can be based on this information to carry out real-time control.

This article is from Allicdata Electronics Limited.