TMT182 7 Maintenance
Endress+Hauser 27
Application faults for TC connection
9.4 Spare parts
Spare parts Head transmitter installation set
•(8 screws, 8 springs, 8 E-rings)
•For U. S. style installation: (8 machine screws M4x20)
È Order code: TMT181A-KA
ƒig. 13:Head transmitter installation set
9.5 Returns
Returns Please follow the return Authorization Policy which is attached with these instructions.
9.6 Disposal
Disposal Due to its construction, the head transmitter cannot be repaired. When disposing of the head trans-
mitter please take note of the local disposal regulations.
Fault Cause Action/cure
Fault current
(
≤ 3.6 mA or ≥ 21 mA)
Sensor incorrectly connected Connect sensor correctly to
terminal plan (polarity)
Defective sensor Replace sensor
Programming Sensor type ’RTD’ setup; set up cor-
rect thermocouple
Incorrect 2 wire connection (current
loop)
Connect the cables correctly (see
connection diagram)
Defective head transmitter Replace head transmitter
Measured value incorrect/inaccurate Faulty sensor installation Install sensor correctly
Heat conducted via sensor Take note of sensor installation
length
Transmitter programming faulty (scale) Change scale
Incorrect thermocouple setup Change parameter ‘Sensor type’
Incorrect cold junction setup See chapter ‘Operation’ and ‘Techni-
cal data’
Offset incorrectly set up Check offset
Fault on the thermowell welded
thermo wire (coupling of interference
voltages)
Use sensor where the thermo wire is
not welded
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