Temperature Instrumentation
P1 batch 3: knife gate valves, water storage tanks, water wells, cathodic protection and instrumentation cable now owned; bare-text mentions re-pointed to the new standards
Showing changes from Rev 4
to Rev 5
in Temperature Instrumentation.
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title: Temperature Instrumentation
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### Where a head-mounted transmitter is furnished at a thermocouple point, the cold-junction reference shall be in the transmitter and no extension wire shall be run beyond the connection head.
−### Thermocouple extension wire shall be twisted and shielded, with the shield grounded at the control panel end only.
+### Thermocouple extension cable construction, shielding, installation, and shield grounding are under [[sync/instrumentation-and-control-cable]]; this standard requires only that the extension grade match the thermocouple type and that polarity be preserved at every terminal.
## Element Leads {toc}
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### Element leads and transmitter signal pairs shall be installed in raceway under [[sync/raceways-and-conduit]], separated from power conductors in accordance with the manufacturer's instructions and [[sync/industrial-control-panels]].
−### Shields shall be continuous through junction boxes and grounded at the control panel end only, with the shield at the instrument insulated from the housing.
+### Shields shall be continuous through junction boxes and grounded as [[sync/instrumentation-and-control-cable]] requires, with the shield at the instrument insulated from the housing.
# Local Dial Thermometers {toc}
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## Spare parts shall match the installed devices in model, range, tolerance class, and firmware, and shall be turned over against a written inventory signed by the Owner's representative.