Electromagnetic Flow Meter Accuracy: 0.5% to 1% Communications: RS-232, RS-485,Hart, MODBUS BF-LDH Series Electromagnetic Flow Meter1. IntroductionBF- ... , pharmacology, papermaking, electric power, environmental protection and so forth. 2. Special Features- zero pressure losing;- Corrosion protection, abrasion resistant;- ... ;- Communications: RS-232, RS-485,Hart, MODBUS. Electromagnetic Flow Meter