... the sensor are: measuring tube,electrode poles,excitation coil,iron core,yoke and housing. The measuring tube of the ... with isolation protection,can absorb 250mA current and withstanding 35V voltage(Not isolated with pulse output)Digital communicationsRS232,RS485,HART( ... ,Tongjia Industrial Park,Changzhou,Jiangsu Prov.,ChinaWebsite:www.qf-meter.comSkype:vicky_china68 Tel:+86-519-85327611 Fax:+86-519- ...