Tecfluid M21 Series Instruction Manual page 4

12.2 TH6H .................................................................................
13 ELECTRICAL CONNECTION ..........................................................
13.1 Power supply and analog output .........................................
14 4-WIRE CONNECTION ..................................................................
15 HART TRANSMITTERS .................................................................
15.1 Additional functions with HART communication ....................
15.2 HART communication characteristics ...................................
16 "WRITE PROTECT" .......................................................................
17 MAINTENANCE ............................................................................
17.1 Series M21 ........................................................................
17.2 M21 with damping system ..................................................
17.3 Potential problems with the metering tube ............................
17.3.1 Jammed float ..........................................................
17.3.2 Lack of magnetic field .............................................
17.3.3 Damaged calibrated orifice and/or float ....................
17.4 Potential problems with the indicator housing ........................
17.4.1 The indicator pointer rubs on the reading scale .........
17.4.2 Deviation of the zero on the scale ............................
17.5 RCA regulator maintenance .................................................
17.6 RCD regulator maintenance ................................................
17.7 AMD limit switch maintenance .............................................
17.7.1 Electrical verification ................................................
17.8 TH6 transmitter maintenance
18 TECHNICAL CHARACTERISTICS ...................................................
18.1 Series M21 .........................................................................
18.2 AMD limit switch .................................................................
18.3 TH6 transmitter ..................................................................
18.3.1 Power supply ..........................................................
18.3.2 Outputs ..................................................................
18.3.3 General characteristics ............................................
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