Analytical 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 6
to Rev 7
in Analytical Instrumentation.
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title: Analytical Instrumentation
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- the controller, the supervisory system, and the network, governed by [[sync/programmable-logic-controllers]], [[sync/scada-and-hmi-systems]], and [[sync/process-control-networks]]
- loop checks, tuning, and acceptance testing of the assembled control system, governed by [[sync/control-systems-integration]]
−- signal wiring and raceway, governed by [[sync/conductors-and-cables]] and [[sync/raceways-and-conduit]]
+- signal wiring and raceway, governed by [[sync/instrumentation-and-control-cable]] and [[sync/raceways-and-conduit]]
- gas-phase process analyzers and continuous emissions monitoring systems, laboratory bench instruments, portable meters, and chemical metering pumps, which no article of this standard addresses
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### Sensor cable shall be the manufacturer's cable for the sensor, run from the sensor to the transmitter without a field splice except at a junction box the manufacturer furnishes for the purpose, and not longer than the manufacturer's published limit for the sensor type.
−### Sensor and analog signal cable shall be run in raceway separate from power conductors under [[sync/raceways-and-conduit]], shielded where the manufacturer requires, with the shield grounded at the transmitter end only.
+### Sensor and analog signal cable shall be run in raceway separate from power conductors under [[sync/raceways-and-conduit]], shielded where the manufacturer requires, with the shield grounded at the transmitter end only; the cable from the analyzer to the control system is under [[sync/instrumentation-and-control-cable]].
### An analog pH or ORP signal is a high-impedance millivolt signal that moisture in a connection shorts and a nearby power conductor swamps, which is why its cable, its length, and its single junction are the manufacturer's and not the installer's choice; a digital sensor cable carries none of that sensitivity and still carries the length limit of its driver. {note}
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## Spare sensors shall be the same model as the installed sensors, shall be delivered in the manufacturer's storage packaging, and shall be labeled with the parameter and the tags of the installed sensors they replace.