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Series 830/840/860 Instruction Manual Chapter 2 Installation
IM-83/84/86-H 2-3
Installing the Transducer
Follow the installation instructions that are applicable to your trans-
ducer’s process connection. For all NPT and 1/2-inch size fittings,
see the piping recommendations given on page 2-3. Before use, all
plumbing should be checked carefully for leaks and the transducer
purged with dry nitrogen. Make sure that the tubing is free from
burrs, or rims caused by cutting.
Compression Fittings
1. Position the transducer with the flow direction arrow pointing
downstream in the direction
of flow.
2. Verify the position of the
front and back ferrule as
shown at right. Insert the
tubing into the fitting. Make
sure that the tubing rests
firmly on the shoulder of the fitting and that the nut is finger
tight. Scribe the nut at the six o’clock position.
3. While holding the fitting body steady with a backup wrench,
tighten the nut 1-1/4 turns, watching the scribe mark make one
complete revolution and continue to the nine o’clock position.
For 1/16-inch, 1/8-inch and 3/16-inch (2, 3 and 4 mm) sizes,
tighten only 3/4 turn from finger tight. Do not over-tighten!
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 dam-
age the unit.)
VCO Fittings
1. Position the transducer with the flow direction arrow pointing
downstream in the direction of flow.
2. Tighten the nut finger tight, and then 1/4 turn tighter with a
wrench. Do not over-tighten!
3. 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 dam-
age the unit.)
Caution!
Only qualified
personnel should in-
stall the transducer.