The knock Sensor is located on the engine block, cylinder head or intake manifold. This is because its function is to sense vibrations caused by engine knock or detonation. The PCM uses this signal to alter the ignition timing and prevent detonation. It will compare this information with its preset tables to identify a valid knock or ping. If a ping is sensed, it will retard the ignition timing to protect the engine from this damaging pre-ignition.
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The SF6 leak detector is mainly suitable for electricity, railways, electrical appliances manufacturing, chemical industry, fire-fighting equipment, and atomic physics research departments for sulphur hexafluoride or other halogen gases (eg fluorine, chlorine, bromine, iodine and 1211, chloroform, freon F11, F12, F13, F22, etc. equipment and containers for leak detection, can be quickly and accurately qualitative and quantitative detection.
Features:
1, small size, light weight. The instrument uses light raw materials as much as possible, compresses the space and weight of the instrument, greatly reduces the volume and weight of the instrument, and facilitates transportation and carrying. 2. The high-precision SF6 gas leak detector is light and compact, and can detect higher leakage points and moving range. Big 3, high sensitivity. Optimized design on the circuit, while reducing the noise and electromagnetic interference, so that the sensitivity increased 4, wide measurement range, multi-step switch. The instrument can detect the leakage of SF6 within the leakage rate range of SF6 switchgear. It can be selected by multi-step switching, and the standard curve of each file can be given. It can quantitatively and qualitatively detect leakage 5, and has high accuracy. The instrument is calibrated with advanced inspection methods to give a high-accuracy calibration curve, which improves the reliability of SF6 leak detection results and the accuracy of quantitative leak detection. 6. Intuitive display and sound and light alarms. With indicator instrument display, with simple and intuitive results. When there is SF6 gas present, the instrument emits audible and visual alarm 7, the reaction speed is fast, and the recovery time is short. With the new circuit structure, the reaction speed of the instrument is accelerated and the recovery time is shortened, which greatly facilitates the on-site detection 8. Built-in self-diagnosis function. The instrument has the function 9 of monitoring the working status of the instrument, and the instruction is intuitive. All button switches on the panel have indicators 10, long use time. The use of time up to 3 hours, very suitable for on-site use 11, strong anti-interference. The high-precision SF6 gas leak detector is fully shielded, eliminating the external and its own interference 12, high stability. Instrument power supply voltage stability is high, temperature is low, heat loss is small, thermal stability is good, instrument zero drift and range drift are small, and the repeatability is good. The instrument has repeatedly measured the results of good repeatability 14, high reliability. The instrument circuit structure is reasonable; imported components are used, and strict screening is performed, and the over-current and short-circuit protection technical parameters are also provided:
Measurement range (SF): 10 to 10 (volume ratio)
Response time: no more than 3 seconds (10 gases)
Indication mode: LCD digital quantitative indication harmony, light signal Vacuum hose length: 4 meters Continuous working time: not more than 4 hours Working conditions: AC power supply 220V±22V50Hz±2Hz
Ambient temperature: 5°C-40°C
Relative humidity: no more than 85%
Power consumption: about 270W
Dimensions (length * width * height): 510 × 330 × 480mm
Total weight: about 35Kg
SF6 leak detector
SF6 leak detector is our company's newly designed product. It has the characteristics of high sensitivity, good stability, fast response, no poisoning of the probe, no toxic gas, etc. With LCD display gas concentration, the instrument readings are more convenient and accurate.