Gf-signet 8900 Multi-Parameter Controller Manual do Utilizador descarregar pdf (Página 23)

23 Signet 8900 Multi-Parameter

8.5 Other Automatic Displays

The 8900 will conﬁ gure the following displays when appropriate:

• For each channel assigned to ﬂ ow, two display screens will be added to View; one

for a permanent totalizer (Perm~), and another for a resettable totalizer (Rst~):

• For each channel assigned to pH or ORP, a display screen showing the raw mV

input from the sensor will be added.

Analog Output Values

• The 8900 supports up to four analog outputs. If installed, output values will be displayed

automatically, in pairs, in a format that cannot be modiﬁ ed.

• Outputs will remain in error condition (as shown in this example) until properly assigned in the Output

menu, or until a true error affecting output source is remedied.

• There is a 10 minute timeout from this item back to the ﬁ rst measurement display screen.

(The Autoscroll feature overrides the 10-minute timer.)

Relay Status Indicators

• The 8900 supports up to eight (8) relays; four internal, and four external. The four internal relays are

numbered 1 through 4, and the four external relays are labeled A through D. In the Activated Relays

screen, underscores (“_”) are used to indicate relaxed or inactive relays.

• If a relay is activated, then its number or letter will replace the corresponding underscore. In the

example below, relays 1 & 2 and A & B are activated:

• Relays that are not installed or connected will always be represented by the underscore.

• Relays will remain or become inactive (error condition) until properly assigned in the Relay menu, or

until a true error affecting relay source is remedied.

• There is a 10 minute timeout from this item back to the ﬁ rst measurement display screen.

(The Autoscroll feature overrides the 10-minute timer.)

Memo

• The second line of this screen is alphanumerically editable, up to 15 characters, via the Memo item in

the Options menu.

• Use this ﬁ eld to record important dates such as system commissioning or scheduled maintenance, or

the telephone number of your local Signet sales representative.

• There is a 10 minute timeout from this item back to the ﬁ rst measurement display screen.

(The Autoscroll feature overrides the 10-minute timer.)

8.6 Displays for Derived Functions

• Whenever two or more measurements of the same type are present in the 8900 setup, the following

derived functions become available for like pairs: Sum, Difference, Ratio, % Recovery (ﬂ ow), % Reject

and % Passage (conductivity) Recovery A, Recovery B, Recovery C, Power 2, Power 4.

• These assignments are made in Function Type of the Options menu.

• The 8900 allows up to four derived functions to be used for display and control at any one time. An

example of the display for derived functions is shown here. This format cannot be modiﬁ ed.

Output1 22.10 mA

Output2 22.10 mA

Activated Relays

_ _ _ _ _ _ _ _

Activated Relays

1 2 _ _ A B _ _

Memo:

gfsignet.com

Reject C3→C4

99.1%

Ratio L3→L4

97.000

Diff T3→T4

10.58 °C

Power 2

40.943 kW

ORP3 Input:

763 mV

pH4 Input:

-6.027 mV

Perm1 1234567.8

Gallons

Rst2 1234567.8

Gallons 

1 2 ... 18 19 20 21 22 23 24 25 26 27 28 ... 51 52

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