| Address: Xiongyi, Jinhe Road, Jinhu County, Jiangsu Province |
| Phone: 0517-86900901 |
| Fax: 0517-86900902 |
| Postcode: 211600 |
| http://zzyfwh.com |
| Email: firstname.lastname@example.org |
| Failure analysis steps of liquid level control instrument system |
| 2011-6-30 17:21:52 |
(1) When the indication value of the liquid level control instrument system changes to the maximum or minimum, you can first check the detection instrument to see if it is normal. If the indication is normal, change the liquid level control to manual remote liquid level to see the change of the liquid level. If the liquid level can be stabilized in a certain range, the fault is in the liquid level control system; if the liquid level cannot be stabilized, it is generally a fault caused by the process system, and the cause must be found from the process aspect.
(2) When the differential pressure level control instrument indication and the on-site direct-reading indication instrument are not compatible, first check whether the on-site direct-reading indication instrument is normal. If the indication is normal, check the negative pressure guide of the differential pressure level instrument . Whether there is leakage in the pressure tube sealing liquid; if there is leakage, refill the sealing liquid and adjust the zero point; if there is no leakage, the negative migration of the meter may be wrong, and readjust the migration to make the meter indication normal.
(3) When the indication value of the liquid level control instrument system changes and fluctuates frequently, the capacity of the liquid level control object must be analyzed first to analyze the cause of the failure. The large capacity is generally caused by the failure of the instrument. Small capacity must first analyze whether the process operating conditions have changed, if any changes are likely to be frequent fluctuations caused by the process. If there is no change, it may be caused by a malfunction of the instrument.