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12

Signet 2551 Display Magmeter

• The 2551 magmeter is designed to measure bi-directional 

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 ow.

• The forward 

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 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 

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 ow. 

"-123.45 GPM" during reverse 

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 ow.

Totalizer Display

 The totalizer will count during forward 

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 ow conditions only. 

During reverse 

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 ow the totalizer will not increment.

Relay Outputs

May be set to detect reverse 

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 ow: "Low Setpoint at -25 GPM."

4 to 20 mA output

 May be scaled to span any 

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 ow range: 

For example: "4 to 20 mA = -100 GPM to +100 GPM"

Frequency output, Frequency ÷ 10 output

 

Reverse 

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 ow is processed same as forward 

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 ow in the frequency output magmeters.

Digital (S

3

L) output

Reverse 

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 ow results in 0 

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 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

MPV8T012

464.91

122.83

MPV8T015

331.43

87.56

2

MPV8T020

192.89

50.96

SCH 80 PVC TEES FOR SCH 80 PIPE

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

MCPV8T012

464.91

122.83

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

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

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    

Содержание signet 2551

Страница 1: ...ity 2 Dimensions 2 Specifications 3 Installation 4 Pipe Fittings 4 Selecting a Location 4 Overview Magmeter Display 5 Wiring 5 Mirror Relay 1 Output 5 Frequency Output 5 4 to 20 mA Output 6 Wiring to other Manufacturer s Instruments 6 Wiring to Signet Flow Instruments 6 Wiring Relays 7 Application Notes Relay Wiring 7 Navigating the Menus 8 Keypad Functions 8 Security Code 8 View Menu 9 Resetting ...

Страница 2: ...d to your local GF Sales office or distributor Product returned without a Service Form may not be warranty replaced or repaired Signet products with limited shelf life e g pH ORP chlorine electrodes calibration solutions e g pH buffers turbidity standards or other solutions are warranted out of box but not warranted against any damage due to process or application failures e g high temperature che...

Страница 3: ...with cap installed Case PBT Display window Polyamide Storage Temperature 20 C to 70 C 4 F to 158 F Relative Humidity 0 to 95 non condensing Operating Temperature Ambient 10 C to 70 C 14 F to 158 F Media 0 C to 85 C 32 F to 185 F Operating pressure Maximum 10 3 bar 25 C 150 psi 77 F 1 4 bar 85 C 20 psi 185 F Specifications General Pipe size range DN15 to DN900 in to 36 in Flow Range Minimum 0 05 ms...

Страница 4: ...e of straight pipe immediately upstream of the sensor Locating the sensor in a trap or where the flow is upward helps to protect the sensor from exposure to air bubbles when the system is in operation These configurations are not recommended because it is difficult to keep the pipe full Type Description 2 to 4 inch cut 1 7 16 inch hole in pipe Over 4 inch cut 2 1 8 inch hole in pipe Special order ...

Страница 5: ...ial number and output type are identified on the electronics module Signet Magmeter RELAY 1 RELAY 2 ENTER 420 GPM 123456 78 3 Relay 1 Relay 2 NO1 NO2 NO3 NC1 NC2 NC3 C1 C2 C3 V V Relay 3 Aux Pwr 4 5 4 20 freq out s n 60504201234 60504201234 p n 3 2551 11 3 2551 11 6 4 1 2 3 4 4 to 20 mA output Digital S3 L output Frequency output Mirror relay 1 output 1 Relay output Aux power 2 Overview of Magmete...

Страница 6: ... 3 2551 22 and 3 2551 42 Magmeters provide a passive 4 to 20 mA loop output External loop power 24 VDC is required Factory standard calibration is 4 to 20 mA 0 to 5 m s The 4 to 20 mA output can be spanned to any range from 10 m s to 10 m s AUX PWR must be connected to power the display backlighting and to power to the relay coils if included 2551 Magmeter Relay 1 Relay 2 NO1 NO2 NO3 NC1 NC2 NC3 C...

Страница 7: ... to power the display backlighting Auxiliary power is fully isolated The Loop Power supply may be used for Aux power if the power source provides a sufficient current rating Relay Terminal Legend NO Normally Open NC Normally Closed C Common Application Notes Relay Wiring Inductive relay loads may generate transient voltage spikes well in excess of the relay contact ratings This will cause arcing a...

Страница 8: ...press the key 2 Press the ENTER key and hold it for about three seconds Enter Code 0000 3s ENTER Or Signet Magmeter RELAY 1 RELAY 2 ENTER 1234 56 GPM 876543 21 Enter Menu Enter Menu Setup Enter Menu Calibration Enter Menu Relay 1 Enter Menu Relay 2 Enter Menu Relay 3 Enter Menu Test Enter Menu Options Scrolls UP through any menu If the display shows any flashing character or selection scrolls UP t...

Страница 9: ...splay press the key 3 Press any arrow key to toggle the flashing selection from NO to YES 4 Press the ENTER key The totalizer will reset to all zeroes and the display will immediately return to the normal operating display 2 The resettable totalizer can be configured to require the security code before allowing the reset If the Total Reset is set to RESET OFF this display will not appear See page ...

Страница 10: ...has no effect on the measurement The special characters listed in the Total Factor settings are available here also Low Flow Cutoff Set a flow rate that the 2551 Magmeter will use as a minimum threshhold If the flow rate falls below this value the 2551 will respond as if the flow were zero Sensitivity Set a percentage of maximum range by which the flow must change to override the averaging feature...

Страница 11: ... installation limitations No Averaging With AVERAGING set to zero the flow rate will be displayed immediately and with no filtering This line represents the actual output of the flow sensor as it responds to unstable flow conditions in the pipe 10 s 20 s 30 s 40 s 50 s 60 s 70 s Time Velocity Averaging Only With AVERAGING set to 50 seconds and SENSITIVITY still set to zero the flow rate is stabili...

Страница 12: ... 3 PV8T030 82 52 21 80 4 PV8T040 44 78 11 83 SCH 80 CPVC TEES FOR SCH 80 PIPE MCPV8T005 2277 0 601 58 MCPV8T007 1407 6 371 90 1 MCPV8T010 861 17 227 52 1 MCPV8T012 464 91 122 83 1 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 2 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...

Страница 13: ...lets Pipe Size In Fitting Type K Factor Gallons K Factor Liters BRONZE TEES ON SCH 40 PIPE 1 BR4T010 582 34 153 86 1 BR4T012 330 54 87 33 1 BR4T015 254 76 67 31 2 BR4T020 157 36 41 58 COPPER TEES FITTING ON COPPER PIPE SCH K CUKT005 2459 19 649 72 CUKT007 1108 02 292 74 1 CUKT010 649 87 171 70 1 CUKT012 422 03 111 50 1 CUKT015 281 43 74 35 2 CUKT020 136 02 35 94 COPPER TEES FITTING ON COPPER PIPE ...

Страница 14: ...han two minutes At START the 2551 begins counting the flow past the sensor At STOP the 2551 stores the total flow accumulated since the START Enter the VOLUME that has been pumped past the sensor This error message appears if volume entered or the accumulated flow is zero Repeat the test after checking the system Press Enter To Start Enter Volume 000000 GPM K Factor 45 6789 Value must be more than...

Страница 15: ...time the Totalizer reaches 10000 the relay activates and lights a message indicator to remind the service representative to replace the filter When the totalizer is reset the relay will be deactivated and the process begins anew Program a relay to activate for a fixed period for each volume of fluid that passes the sensor For example program the relay to pulse once for 100 ms for every 3 gallons t...

Страница 16: ...nt where the relay will be deactivated The hysteresis setting serves to prevent relay chatter when the flow rate recovers from an alarm condition by requiring the low rate to move substantially within the setpoint Delay Set a time period for the relay to wait after reaching the setpoint This delay serves to prevent the relay chatter by allowing the flow rate time to move back within the setpoint R...

Страница 17: ...frequency output range is from 0 Hz to 1000 Hz The FREQUENCY 10 output mode reduces the output frequency of the 2551 to a range that is useful for some programmable logic controllers PLC The frequency output range is from 0 Hz to 100 Hz This shift does not affect the stated accuracy of the 2551 Magmeter s frequency output The MIRROR RELAY 1 output mode allows 2551 Frequency Digital models to use t...

Страница 18: ... Earth ground to prevent electrical noise from interfering with the magmeter signal If the interference persists apply step 2 Connect grounding rings metal clamps or grounding electrodes to the pipe immediately upstream and downstream of the magmeter sensor location These devices must be in contact with the fluid If the interference persists apply step 3 The shield from the output cable must be te...

Страница 19: ...pe backwards Remove the magmeter and reinstall with the flow direction arrow on the sensor body pointed DOWNSTREAM Electrical noise is interfering with the measurement Review the grounding of the magmeter and the pipe Install adequate Earth ground to allow the Magmeter to operate properly Electrodes are coated with deposits or chemical oxide layers Carefully clean the electrodes Refer to sensor ma...

Страница 20: ...to DN900 10 in to 36 in PVDF and Hastelloy C Mfr Part No Code Description 3 2551 P0 22 159 001 273 DN15 to DN100 in to 4 in Polypropylene and 316L SS Two SPDT relays one solid state relay 3 2551 T0 22 159 001 439 DN15 to DN100 in to 4 in PVDF and Titanium Two SPDT relays one solid state relay 3 2551 V0 22 159 001 275 DN15 to DN100 in to 4 in PVDF and Hastelloy C Two SPDT relays one solid state rel...

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