Section 2 - Installation - Omega HHF1001A User Manual

Section 2 - Installation

1. Install the 9V battery in the battery compartment of the case. You can remove
the battery door to get to the compartment.
2. Remove the protective cap from the sensor tip.
3. Run a length of straight pipe before and after the flow sensor probe. The
amount of upstream straight pipe required depends on the type of obstruction
which is immediately upstream of the flow sensor. See Table 1 (on next page)
for specific requirements. Downstream of the flow sensor, in all situations, run
5 diameters of straight pipe regardless of the downstream obstruction.
4. Align the sensor probe with the air flow. Make sure the air flow is
perpendicular to the sensor window. The score line on the sensor tubing
is another way of aligning the sensor to the flow stream. The score line
starts from the center of the sensor window and as a result it can be aligned
properly.
5. One way of installing the sensor probe into a flow stream is to utilize a
compression fitting such as Omega's SSLK-14-14 stainless steel compression
fitting with Teflon ferrule, which allows adjustment of the insertion depth of
the probe.
6. Turn on the power switch and start measuring air velocity & temperature.
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Installation
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