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Installing the Dwyer 641 Air
Velocity Transmitter
(continued)
3
Screw the compression fitting into the customer-supplied pipe.
4
Orient the air velocity probe so that the flow direction arrow stamped on
the NUT used to secure the transmitter is pointing in the direction of the
air flow.
The arrow is located on the nut below the conduit bodies.
5
Center in pipe.
This will allow you to adjust the air velocity probe in the cen-
ter of the air stream.
Air Flow Direction
Arrows Located
on the Nut
3
In
st
al
la
tio
n
I n s t a l l a t i o n - P i p i n g / H o s e s l
3-43
NOTE:
Refer to Dwyer 641
Instructions found in the
Appendix of this manual.
✐
Summary of Contents for HTC 120
Page 10: ...viii l Table of Contents ...
Page 30: ...2 14 l Description ...
Page 35: ...Installation General Installation General l 3 5 3 I n s t a l l a t i o n ...
Page 65: ...Installation Hard Piping Kits Installation Piping Hoses l 3 35 3 I n s t a l l a t i o n ...
Page 80: ...3 50 l Installation Piping Hoses ...
Page 88: ...3 58 l Installation Piping Hoses ...
Page 92: ...3 62 l Installation Conveying Lines ...
Page 93: ...Installation Water Lines 3 I n s t a l l a t i o n Installation Water Lines l 3 63 ...
Page 124: ...3 94 l Installation Gas Piping and Exhaust Flue ...
Page 125: ...Installation Testing 3 I n s t a l l a t i o n Installation Testing l 3 95 ...
Page 250: ...4 108 l Operation ...
Page 286: ...5 36 l Maintenance ...