Thread Content
Keywords of this article: Rosemount transmitters http://china-rosemount.cn/ Rosemount transmitters fail to communicate with the handheld controller. Solutions: a) Check the power supply voltage of the transmitter； b) Check the load resistance (*minimum 250 ohms) ； c) Check whether the transmitter address is correct ； d) Replace the electronic circuit board. 7.3 The 7.3 milliampere reading is low or high. Action to take: a) Check whether the pressure variable reading is saturated ； b) Check whether the output is in an alarm state ； c) Perform 4-20mA output trimming (Output Trim) ； d) Replace the electronic circuit board. 7.4 No response to changes in applied pressure. Action taken: a) Check the testing equipment ； b) Check whether the pressure tap pipe is blocked ； c) Check whether range adjustment is not possible (rendering the range adjustment function inoperative) ； d) Check the transmitter’s protection function jumper switch ； e) Verify setting of calibration points (4 and 20 milliamps) ； f) Replace the sensing diaphragm. 7.5 Low or high readings of the pressure variable: Action taken: a) Check whether the pressure tap is blocked ； b) Check the testing equipment ； c) Perform full sensor trimming ； d) Replace the sensing diaphragm head. 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