12
Signet 2551 Display Magmeter
• The 2551 magmeter is designed to measure bi-directional
fl
ow.
• The forward
fl
ow direction is indicated by the directional arrow molded into the side of the 2551 sensor.
• The conduit ports are assembled at the factory to point UPSTREAM. They may be reversed by
disassembling the components of the magmeter and reassembling.
Flow Rate Display
The "+" sign is suppressed during forward
fl
ow.
"-123.45 GPM" during reverse
fl
ow.
Totalizer Display
The totalizer will count during forward
fl
ow conditions only.
During reverse
fl
ow the totalizer will not increment.
Relay Outputs
May be set to detect reverse
fl
ow: "Low Setpoint at -25 GPM."
4 to 20 mA output
May be scaled to span any
fl
ow range:
For example: "4 to 20 mA = -100 GPM to +100 GPM"
Frequency output, Frequency ÷ 10 output
Reverse
fl
ow is processed same as forward
fl
ow in the frequency output magmeters.
Digital (S
3
L) output
Reverse
fl
ow results in 0
fl
ow rate output.
PVC Tees and Clamp-on Saddles
Pipe Size
(In.)
Fitting
Type
K-Factor
Gallons
K-Factor
Liters
SCH 80 PVC-U TEES FOR SCH 80 PIPE
½
MPV8T005
2277.0
601.58
¾
MPV8T007
1407.6
371.90
1
MPV8T010
861.17
227.52
1¼
MPV8T012
464.91
122.83
1½
MPV8T015
331.43
87.56
2
MPV8T020
192.89
50.96
SCH 80 PVC TEES FOR SCH 80 PIPE
2½
PV8T025
131.46
34.73
3
PV8T030
82.52
21.80
4
PV8T040
44.78
11.83
SCH 80 CPVC TEES FOR SCH 80 PIPE
½
MCPV8T005
2277.0
601.58
¾
MCPV8T007
1407.6
371.90
1
MCPV8T010
861.17
227.52
1¼
MCPV8T012
464.91
122.83
1½
MCPV8T015
331.43
87.56
2
MCPV8T020
192.89
50.96
SCH 80 PVC CLAMP-ON SADDLES FOR SCH 80 PIPE
2
PV8S020
193.83
51.21
2½
PV8S025
138.01
36.46
3
PV8S030
83.89
22.16
4
PV8S040
40.88
10.80
6
PV8S060
22.53
5.95
8
PV8S080
12.52
3.31
10
PV8S100
7.94
2.10
12
PV8S120
5.71
1.51
SCH 80 PVC CLAMP-ON SADDLES FOR SCH 40 PIPE
2
PV8S020
180.01
47.56
2½
PV8S025
123.72
32.69
3
PV8S030
75.81
20.03
4
PV8S040
41.87
11.06
6
PV8S060
19.71
5.21
8
PV8S080
11.73
3.10
10
PV8S100
7.43
1.96
12
PV8S120
5.23
1.38
Polypropylene True Union Tees
and Wafers
PVDF True Union Tees,
PVC True Union Tees
Pipe Size
(Metric)
Fitting
Type
K-Factor
Gallons
K-Factor
Liters
POLYPROPYLENE FITTINGS (DIN/ISO, BS, ANSI)
DN15
PPMT005
2192.73
579.32
DN20
PPMT007
1327.81
350.81
DN25
PPMT010
737.16
194.76
DN32
PPMT012
453.46
119.81
DN40
PPMT015
275.03
72.66
DN50
PPMT020
164.17
43.35
PVDF FITTINGS (DIN/ISO, BS, ANSI)
DN15
SFMT005
1946.49
514.26
DN20
SFMT007
1158.05
305.96
DN25
SFMT010
749.09
197.91
DN32
SFMT012
439.51
116.12
DN40
SFMT015
248.93
65.77
DN50
SFMT020
146.85
38.80
PVC FITTINGS (DIN/ISO, BS, ANSI)
DN15
PVMT005
2067.76
546.30
DN20
PVMT007
1136.61
300.29
DN25
PVMT010
716.52
189.31
DN32
PVMT012
446.07
117.85
DN40
PVMT015
278.83
73.67
DN50
PVMT020
159.36
42.10
Bi-Directional Flow
Calibration Data: K-Factors
Flow