Fault Analysis 1. survey: review before ignition failure, smoke, odor, change the power supply, lightning, humidity, misuse, wrong maintenance. 2. visual method: observation loop external damage, leakage impulse tube overheating circuit, power switch status. 3. Detection method: 1) open circuit detection: suspected faulty part with the rest of separate check if the fault disappears, disappears if it is determined that the fault lies, or can enter the next step to find, such as: Smart Pressure Transmitter Hart does not work telecommunications, power can be disconnected from the meter body, with additional power field method for the transmitter is powered communicate, to see if the cable is about 2kHz superposition of electromagnetic signals and interference with communications. 2) short-circuit detection: to ensure the safety of the case, the relevant parts of the circuit shorted directly, such as: the difference between the transmitter output value is small, impulse pipe can be disconnected from the outside take a pressure valve directly to the differential signal Bilateral directly lead to the differential pressure transmitter, observe the transmitter output to determine pressure pipe blocking leakage of connectivity. 3) Replace detection: The suspected faulty part replacement Rosemount transmitters 3051s, determine fault location. Such as: suspect transmitter circuit board failure Rosemount transmitters 3051, temporarily replacing the piece to determine the cause. 4) Segment test: the measurement circuit is divided into several parts, such as: power supply, signal output, signal transmission, signal detection, by sub-part examination, from simple to complex Rosemount transmitters 3051c, outside to the inside, narrow range, locate the fault. Honeywell, the world's top 500 enterprises, is a diversified manufacturing and technology in the world leading the company, annual sales of over 30 billion US dollars, is one of the constituent of the 30 Dow Jones Industrial Average companies, but also "standard S & P 500 Index "component. Its business is mainly involved in the field of aerospace products and services, industrial control, building / residential control technology, advanced materials and electronics technology. Honeywell has 120,000 employees, 83 enterprises directly under and 13 joint ventures in 95 countries worldwide. Honeywell is the world's leading brand of industrial control field, a number of world first: the first to propose the concept 4-20Am, the first smart transmitter, the first set of Honeywell DCS system ...... 100 years Seoul this famous international brand has always marked the innovation, quality, technology and the future. Rosemount transmitters, China-Technology (online consultation), Rosemount transmitters provided by the Jinan-Technology Co., Ltd. Jinan Huahui Technology Co., Ltd. (www.cnhuahui.com/) Shandong Jinan, pressure meters leaders, over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. - Technology leader in China with the staff warmly welcome all inquiries negotiations to create Hua Hui Technology better future.