Tham khảo tài liệu 'instrumentation symbols and identification part 7', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Primary element symbols contd. LU UJ LG 18B REMOTE VIEWING OF GAGE GLASS BY USE OF TELEVISION LLJ w a LLJ w 14 LG 19 LEVEL GLASS WITH ILLUMINATOR CONVEYOR MC MOISTURE RECORDER IF THERE IS A SEPARATE PRIMARY ELEMENT IT SHOULD BE TAGGED ME-2 SELF-CONTAINED HUMIDITY CONTROLLER IN ROOM M o 1 2 USE OF LETTER M TO BE DEFINED IN USER S LEGEND LINE-MOUNTED PRESSURE INDICATOR DIRECT-CONNECTED PRESSURE INDICATOR CONNECTED TO DIAPHRAGM SEAL WITH FILLED SYSTEM PRESSURE ELEMENT STRAIN-GAGE TYPE CONNECTED TO PRESSURE INDICATING TRANSMITTER TAG STRAIN GAGE PE-19 ANSI R 1992 .