Gf-signet 2551 Magmeter Flow Sensor - Display Manuel d'utilisateur télécharger pdf (Page 15)

152551 Magmeter

9. Relay Menus

Magmeter models 3-2551-21 and -22 have two dry contact relays (Relays 1 and 2) and one Solid

State relay (Relay 3).

Any of these relays can be set to any of the operating modes listed below.

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  ow rate falls below -10 GPM.

Negative values are not available for relays in PULSE or TOTAL modes.

Off: If a relay is not used, it can be turned Off to prevent contact wear.

9.2 Total Relay mode

Program a relay to activate when the Resetable totalizer reaches a speci c value. The maximum setting is 999999.

Application example: A  lter must be replaced in an R.O. system every 10000 gallons. The service representative that installs a new

 lter sets relay 3 to Total mode, sets the setpoint at 10000 and resets the totalizer to 000000.00. Every time the Totalizer reaches

10000, the relay activates and lights a message indicator to remind the service representative to replace the  lter.

When the totalizer is reset, the relay will be deactivated and the process begins anew.

9.1 Pulse Relay mode

Program a relay to activate for a  xed period, for each volume of  uid that passes the sensor.

For example, program the relay to pulse once for 100 ms for every 3 gallons that pass by the sensor.

Relay 1 Mode

Pulse >

Relay 1 Width

0.1 secs >

Relay 1 Volume

0.0000 Gal >

Relay Volume: Set the volume of  uid that the 2551 must

measure before activating the relay for one pulse.

Pulse Width: Adjust the length of time the relay will remain

activated. The pulse width setting is dependent on the type of

external equipment being connected to the relay.

Relay 1 Mode

Total >

Relay 1 Set High

000000 >

ENTER

Signet Magmeter

RELAY 1 RELAY 2

ENTER

1234.56 GPM

876543.21 >

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

1 2 ... 10 11 12 13 14 15 16 17 18 19 20

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Gf-signet 2551 Magmeter Flow Sensor - Display Manuel d'utilisateur Page 15

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