Manual

132552 Magmeter
Sensor Selection Guide
The 2552 Magmeter can be installed into a variety of pipe sizes. Follow the steps below
to ensure that you choose the right sensor for your application.
Step 1: Determine how the sensor will be installed
• For retrofit installations, the ball valve
must be at least a 1¼ in. (or 1½ in.
for 2552-3) full port valve. The stack
height, or “A” dimension (see Fig. 2), is
the overall height from the top of the
pipe to the top of the ball valve, or the
top of the highest point of the stack
before the sensor is connected.
B. For Hot-Tap installations:
The stack height of the ball valve, nipple weldolet (threadolet) and pipe adapters should
be determined before the sensor is purchased.
• For new installations, Signet
recommends a 1¼ in. or 1½ in. full
port ball valve, a short nipple and
a weldolet (threadolet). The stack
height or “A” dimension (see Fig. 2) is
the overall height from the top of the
pipe to the top of the ball valve.
A. For standard (non Hot-Tap) installations:
The height of the weldolet (threadolet) and pipe adapter(s) should be determined before
the sensor is purchased.
• For retrofit installations, the stack
height, or “A” dimension (see Fig. 1), is
the overall height from the top of the
pipe to the highest point of the stack
before the sensor is connected.
• For new installations, Signet
recommends a weldolet (threadolet)
and an adapter to accommodate the
1¼ in. (or 1½ in. for 2552-3) sensor
process threads. The stack height,
or “A” dimension (see Fig. 1), is the
overall height from the top of the pipe
to the highest point of the stack.
Step 2: Determine how the sensor will be installed
Once the “A” dimension is determined, go to the sensor selection table and find your “A”
dimension on the left column. Next, find the appropriate pipe size at the top of the chart.
To determine the correct sensor size locate where the pipe size column meets the max
“A” dimension row.
“A”
Dimension
Weldolet
or Saddle
Sensor
Housing
Sensor
Fig. 1
Standard installation with “A”
dimension using a weldolet
(threadolet)
“A”
Dimension
Weldolet
Nipple
Ball
Valve
Pipe
Wall
Sensor
Housing
Sensor
Fig. 2
Hot-Tap installation with “A”
dimension using a ball valve,
short nipple and weldolet
(threadolet)
Step 3: Refer to Ordering Information to select corresponding part numbers
Legend:
2: Use 3-2552-2,
max. insertion =
236 mm (9.3 in.)
3: Use 3-2552-3
max. insertion =
368 mm (14.8 in)
inches 2 2.5 3 to 31/2" 4 5 6 to 8" 10 12 to 14" 16 18 20 22 24 26 to 28" 30 to 32" 34 36 to 38" 40 to 42" 48 54 60 66 72 78 84 102
DN 50 65 80 to 90 100 125 150 to 200 250 300 to 350 400 450 500 550 600 650 to 700 750 to 800 850 900 to 950 1000 to 1100 1200 1400 1500 1700 1800 2000 2100 2550
mm inches
50.8 2 22222222222222222223333333
63.5 2.5 22222222222222222223333333
76.2 3 22222222222222222223333333
88.9 3.5 22222222222222222223333333
101.6 4 2 2 2 2 2 2 2 2 2 2 2 2 2 2 222223333333
114.3 4.5 2222222222222222223333333
127 5 2222222222222222233333333
139.7 5.5 2 2 2 2 2 2 2 2 2 2 2 2 3 2 23333333333
152.4 6 2 2 2 2 2 2 2 2 2 2 2 3 3 2 33333333333
165.1 6.5 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3333333333
177.8 7 2 2 2 2 2 2 2 3 3 3 3 3 3 3 333333333
190.5 7.5 2222222333333333333333
228.6 9 23333333333333333333
241.3 9.5 3333333333333333333
254 10 333333333333333333
266.7 10.5 33333333333333333
279.4 11 333333333333 333
292.1 11.5 33333333333 3
304.8 12 3333333333
317.5 12.5 33333333
330.2 13 3333333
342.9 13.5 333333
355.6 14 33333
375.9 14.8 3 3
381 15
Pipe Size
Max. "A" Dim
This chart is based on the thickest commonly available pipe.