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Keywords of this article: Rosemount 3051 http://china-rosemount.cn/ Zero-point adjustment of Rosemount 3051 – The sensor’s zero point can be adjusted using the shortcut keys 1, 2, 3, 3, 1 on the HART handheld device through a specific command sequence. The operation steps are as follows: a) Breathe air into the transmitter and connect the handheld controller to the measurement circuit. b) From the main menu of the handheld device, select 1 Device Setup, 2 Diagnostics and Service, 3 Calibration, 3 Sensor trim, or 1 Zero trim to prepare for zero-point adjustment. c) Follow the instructions provided by the manual operator to perform zero-point fine tuning. 6.2.2.2 Full Fine-Tuning: The sensor can be fully fine-tuned using the shortcut keys 1, 2, 3, and 3 on the HART communicator through the corresponding command sequence. The operation steps are as follows: a) Power on the entire verification system. The verification system includes a transmitter, a HART communicator, a power supply, a pressure input source, and a reading device. b) From the main menu of the handheld device, select 1 Device Setup, 2 Diagnostics and Service, 3 Calibration, 3 Sensor trim, or 2 Lower sensor trim in order to adjust the lower limit trim point. c) Select the pressure input value such that the lower limit is equal to or less than 4 milliamps, and adjust the lower limit following the instructions provided by the handheld controller. d) Repeat the above steps to adjust the upper limit value, using 3 Upper sensor trim instead of 2 Lower sensor trim in step (b). e) Select the pressure input value such that the upper limit is equal to or greater than 20 milliampere points, and adjust the upper limit following the instructions provided by the handheld device. Shanghai Mengyan Automation Equipment Co., Ltd. Address: Room 1119, Jiahong Building, No. 639 Guangfulin Road, Songjiang, Shanghai. Contact person: Xu Gong. Mobile phones: 18616582302 / 18616582330. QQ: 764861476. Email: sales@shmyzdh.com