GF Signet 2551 Magmeter Flow Sensor - Display - Manual (Page 16)

16 2551 Magmeter
The values shown for each menu item represent the factory standard
setting. All 2551 magmeters are packaged with these settings.
The menu repeats for Relay 2 and Relay 3.
Hysteresis
Time
Low Setpoint
Process
Relay activated
Relay deactivated
Hysteresis
Time
High Setpoint
Process
High Limit
Hysteresis
Hysteresis
Window
Time
Low Limit
Process
9.3 High, Low, or Window Relay modes
Program the relay to activate when the À ow rate reaches a setpoint (High or Low) or when the À ow
rate moves outside of a prescribed range (Window).
Reverse Flow
The setpoint values for HIGH, LOW and WINDOW modes can be set to negative values if required.
For example, a LOW alarm might be set to activate if the À ow rate falls to -10 GPM.
Set High: Set the À ow rate where a High relay will be activated.
Set Low: Set the À ow rate where a Low relay will be activated.
Hysteresis: Set a À ow rate increment where the relay will be
deactivated. The hysteresis setting serves to prevent relay
"chatter" when the À ow 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 À ow rate time to move back within the setpoint.
Relay 1 Mode
Low >
Relay 1 Mode
High >
Relay 1 Mode
Window >
Relay 1 Set Low
00.000 GPM >
Relay 1 Set High
00.000 GPM >
Relay 1 Set Low
00.000 GPM >
Relay 1 Hys
00.000 GPM >
Relay 1 Delay
0.1 secs >
Relay 1 Set High
00.000 GPM >
Relay 1 Hys
00.000 GPM >
Relay 1 Delay
0.1 secs >
Relay 1 Hys
00.000 GPM >
Relay 1 Delay
0.1 secs >
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 >
NOTE: The Security Code
must be entered before
modifying the relay menu.
Enter Code
0000
Relay behavior with LOW Setpoint
Relay behavior with HIGH Setpoint
Relay behavior with WINDOW Setpoints