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Series 820 Instruction Manual Chapter 2 Installation
IM-82-C 2-3
1/4 Inch Female NPT (standard on nylon flow bodies)
1. Position the transducer with the flow direction arrow pointing
downstream in the direction of flow.
2. Use a good quality paste pipe thread sealant.
Apply to the pipe threads.
3. Tighten the pipe no more than 1 turn past hand-tight.
Caution! Do not over-tighten,
damage to the instrument may result.
4. Check the system’s entire flow path thoroughly for leaks. (Do not
use liquid leak detectors, instead monitor pressure decay. Over-
exposing the transducer to leak detector fluid may damage the unit.)
1/2-Inch Size NPT Connections (Models 826,827 only)
1. Install a section of straight pipe at least ten pipe diameters in length
upstream of the transducer. Also, allow at least five pipe diameters
downstream for accurate operation. DO NOT use reducers. If the
preceeding components in the flow path create disturbances extend
the upstream pipe length.
2. Position the transducer with the flow direction arrow pointing
downstream in the direction of flow.
3. Tighten fittings until leak tight (refer to published standards for
specific recommendations).
4. Check the system’s entire flow path thoroughly for leaks. (Do not
use liquid leak detectors, instead monitor pressure decay. Over-
exposing the transducer to leak detector fluid may damage the unit.)
Figure 2-1.
Piping Requirements for all 1/2-Inch Size Process Connections