Sierra Monitor Corporation PF2A7H - Manual (Page 5)

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Nominal size of screws
Rc 1 36 to 38
Rc 1 1/2 48 to 50
Rc 2 48 to 50
Before you mount a flow switch, read "SAFETY" and "Installation"
described in this chapter carefully to obtain safe and correct
measurement.
Mounting
Use this flow switch under the specified operating pressure
range.
Use this flow switch under the specified operating temperature
range.
Withstand pressure is 2.25 MPa.
Do not install a flow switch at a foothold position.
Install a flow switch so that the flow direction agrees with the
arrow direction on the side of the body.
Mount the body so that the bottom of the body does not face
upward.
Provide a straight pipe length of more than eight times the pipe
diameter to upstream and downstream of the flow switch.
Set Display Part proper position taking the cable entry and display
position into account. Display Part rotates in 270 degree.
Installation
Piping connections
Observe the specified tightening torque when connecting pipes.
Refer to the following table for the appropriate torque values.
Spanner Spanner
When connecting pipeline to the switch, apply a spanner to the
metal part of the piping section for the switch.
Make sure that sealing tapes will not enter inside the pipe when
connecting pipes.
Appropriate tightening torque
(N m)