Allen-Bradley 839E, User Manual, Page: 8 / 32

839E Solid-State Flow Sensors User Manual
6 Pub #10000004735 Ver 03, May 2012
Installation instructions
Figure 3 Installing Bulletin 839E (example). Sensor length L is completely immersed in the flow
profile.
Mounting instructions:
• Any orientation
• The on-site display can be rotated electronically 180° — see “Operation” section.
• The housing can be rotated up to 310° for optimal readability and ease of wiring.
• Minimum sensor immersion length: L
≥
10 mm (0.4 in.)
• The sensor tip should not touch the pipe wall.
• If used in a vertical pipe, the flow should be ascending.
• For a horizontal pipe, install sensor from top if pipe is completely filled with medium.
Otherwise, install sensor from side to ensure complete length of sensor is in the medium.
Note!
For correct flow measurement, the complete length of the sensor must be immersed in the
fully developed flow profile.
Do not turn the device into the process connection thread
at the housing. Always install the device at the
hexagonal-head bolt (refer to Figure 3, detail 1). Use a
suitable open-ended wrench for this task.
1
V
m
L
ATTENTION