2100-A16-r1 020908.p65
14.02-28
2100-A
16
Maintenance.
Voltage and Current Inputs.
(1)
Repeat (4) of commissioning. Do it regularly - at least once every twelve months.
RTD Inputs.
(1)
Repeat (4) of commissioning. Do it regularly - at least once every six months.
(2)
Replace defective protection tubes - even if they look good they may not be air or gas tight.
(3)
Check cables entering the RTD sensor head.
Thermocouple Inputs.
(1)
Repeat (4) of commissioning. Do it regularly - at least once a month.
(2)
Replace defective protection tubes - even if they look good they may not be air or gas tight.
(3)
Check extension and compensating cable circuits.
(4)
Do not use the same chromel-alumel (Type K) thermocouple below 540C if it was used above 860C.
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