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Signet 2551 Display Magmeter

K-Factor

060.000

K-Factor:

See the charts on pages 12-13 for values in pulses per U.S. gallon or in pulses per liter.

To use other units, convert the published values as appropriate.

Pipe Size:

Select the pipe size that is nearest to the nominal pipe size.

Averaging:

Set the averaging period based on the installation and

ow conditions. Smaller values

allow the 2551 to respond to changes in

ow rate quickly, while larger values smooth the

uctuations

caused by installation and

ow conditions. See page 11 for details.

Flow Units:

Set the units for the application. Four characters are available. The

rst three characters can be set to any symbol or alpha

character, upper or lower case. The following special symbols are located between the upper case and lower case menus:

• (centered dot)

(micro)

_ (blank)

- (dash)

/ (slash)

3 (for cubic units)

The last character selects the timebase for the

ow rate measurement.

Select S/s (seconds) M/m (minutes), H/h (hours) or D/d (days)

Total Factor:

Set the factor by which the totalizer will count. This setting is made in the application

units (i.e., gallons, liters, etc.)

Totalizer Units:

Set the Totalizer Units. This setting serves as a label for the totalizer displays only.

It has no effect on the measurement. The special characters listed in the Total Factor settings are
available here also.

Low Flow Cutoff:

Set a

ow rate that the 2551 Magmeter will use as a minimum threshhold.

If the

ow rate falls below this value, the 2551 will respond as if the

ow were zero.

Sensitivity:

Set a percentage of maximum range by which the

ow must change to override the

averaging feature and "jump" quickly to the new

ow rate. See detailed explanation on page 11.

The Setup menu contains all of the parameters necessary for the 2551 Magmeter to begin
measuring

ow.

NOTE:

The Security Code must be entered before any changes can be made to the Setup menu.

See page 17 for details related to the Options menu..

The values shown for each menu item represent
the factory standard setting. All 2551 magmeters
are packaged with these settings.

Set 4 mA

: (2551-22 and -42 versions only) Set the

ow rate where the current output will be 4 mA.

Set 20 mA

: (2551-22 and -42 versions only) Set the

ow rate where the current output will be 20 mA.

The 4 to 20 mA output may be spanned to monitor forward and reverse

ow rates.

ENTER

Pipe Size

2” DN50 >

Sensitivity

100% >

Flow Units

GPM >

Set 4 mA

-100 GPM >

Set 20 mA

100.00 GPM >

Total Factor

1000.0 >

Totalizer Units

Gallons >

Low Flow Cutoff

0.5 GPM

Averaging

25 secs >

Use the keypad to navigate through each setting.

Enter Code

0000

Setup enu

Signet Magmeter

RELAY 1

RELAY 2

ENTER

Enter Menu

Setup >

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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