page 7 of 12
‡ SIGNET
2550 InsertionMagmeter
Step:
Press:
To display:
1.
7.
Example illustrates setting current output for 0 to 300 GPM = 4 - 20 mA.
The factory default value for current is :
0 to 200 GPM = 4 - 20 mA.
4.
2.
3.
5.
10.
11.
12.
Arrow
keys advance main menu function;
Run/Edit
key returns to normal operation.
6.
9.
13.
14.
15.
16.
17.
Up arrow changes flashing digit.
Down arrow advances to next menu item.
Arrow keys will toggle setting.
Enter key stores final setting and returns to main menu.
Down arrow advances to next menu item.
Press enter 5 times to store the new setting and return
to main menu.
5.3.3 Current Output
The current output of the 2550 is set via three settings.
Low current
specifies the flow rate represented by the minimum current signal
(4 or 0 mA).
High current
is the flow rate represented by the maximum current (20 mA), and
current
selects a 4 to 20 or a 0 to 20 mA
span. To change the current selections, first enter the access code (section 5.2.1) then press the down arrow until the display shows:
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
ENTER
8.
5.4 PerformanceFunctions
The next five main menu functions help to tailor the magmeter
signals to your specific environment.
5.4.1
Sensitivity
The sensitivity function limits the amount of reference level noise
detected by the Magmeter input circuit. Use the StdE display
(section 5.5.2) to evaluate the amount of reference noise in your
system. If StdE is greater than 0.05, decreasing the sensitivity
value may stabilize flow readings.
The range selections are from 1 to 10, with 1 representing the
most sensitive and 10 the least sensitive.
To change the sensitivity setting, first enter the access code
(section 5.2.1) then press the down arrow until the display shows:
Example illustrates changing sensitivity setting to 6.
The factory default setting
for sensitivity is 4.
The enter key stores the new
setting and returns the
display to the main menu.
1.
2.
3.
4.
Up arrow changes the setting.
ENTER
ENTER
Step: Press: To display:
Arrow
keys advance main menu function;
Run/Edit
key returns
to normal operation.
