Intek 100CS - Manual (Page 6)

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SECTION 2 ! INSTALLATION
2.1 TRANSDUCER
!! IMPORTANT: All transducers have a directional arrow on the tag
and/or etched into a metal part. Before installing a sensor, please note
proper flow direction. This is critical to sensor operation.
The transducer style supplied with your meter is listed in the model code number in SECTION 6.
Proper installation of the sensor is necessary for achieving accuracy and repeatability. Installation
suggestions for each type of standard transducer are given here. For custom transducer installations,
refer to CUSTOM INFORMATION SECTION 6.
Be sure wetted surfaces are clean before installing. If cleaning is needed, use non-residue solvent and
wipe dry. Keep moisture out of the electronics box. Make sure the lid is tightly sealed and, if supplied,
the gasket is in place. Seal conduit lines at the electronics box if conduit lines can become wet.
1. TU Transducers
!! CAUTION: TU transducers are made with thin-walled tubing use
care when installing. TU
1 '
16
and TU
c transducers require particularly
careful handling.
!! CAUTION: The electronics box should never be rotated for any
reason.
Straight run for a flow switch is not a requirement, particularly for flow/no flow indications,
but for best repeatability some straight run is useful, such as 10 to 20 pipe diameters on the
inlet and 6 to 10 diameters on the outlet. If installed vertically, the flow should be going up
through the sensor. Connection in the line is via compression fittings, hose with clamp,
threaded fittings or flanges, whichever is appropriate. Care must be taken not to transmit a
twisting force through the transducer's midsection. The TU transducer, whether flanged or
not, must not be used to pull other piping together or to make up angular mismatch of fittings.
Typically, TU 1 '
16
" O.D. flow tubes are sleeved with a
c" tube for added support. Fluid
connections should always be made to the 1 '
16
" tube, as there is no assured seal between the
1 '
16
" tube and the sleeves.
Fluid temperatures other than ambient require special attention. Thermal gradients from one
end of the transducer to the other, as well as along the radius of the connection pipe, are
undesirable. Therefore, effective insulation should be installed around the inlet and outlet
straight line runs. Gradients which may exist in the line further up stream can be removed if
an insulated elbow is installed in the line prior to entering the straight line portion of the
plumbing.