Manual

Page 7
3.7 Configuration of Zero and Span Procedures
The ZERO and SPAN buttons are under the transmitter’s nameplate.
The ZERO, SPAN, ZERO TRIM, ZERO ADJ, Units, Range,
Dampening, LCD and decimal set functions are configurable using
the ZERO / SPAN buttons.
Zero/Span Configuration Process
Remove both name plate screws on the upper part of transmitter.
Remove top name plate to access the Zero and Span Buttons.
(following Figure 3-4)
1
. Zero Configurations
Set the current process value for Lower Range Value (4 mA).
Apply zero differential pressure for 10 seconds and push the Zero
Button for 5 seconds. The LCD should display “Zero”. Push the
Zero button for 3 seconds, after 1 second the LCD should display
“-ZE-“. This message means the zero configuration is finished. If
the zero configuration failed, the LCD will display “SPEr” or
“SEtE”, try repeating the zero configuration steps.
2. Span Configurations
Apply the desired pressure for 10 seconds and push the Span
Button for 5 seconds. The LCD should display “Span”. Push the
Span button for 3 seconds, after 1 second the LCD should display “-
SP-“. This message means that the span configuration is finished. If
the span configuration failed the LCD will display “SPEr” or “SEtE”,
try repeating the span configuration steps.
• Please refer to Appendix 1 for the button error and LCD display
message.
The other functions supported by the ZERO / SPAN Buttons are
below.
1. Moving between menus: Zero
2. Enter or moving to sub menu: Span
3. Moving to top menu: Zero+Span
• Press the button for 3 seconds to execute each function.
After 3 seconds press the Zero+Span buttons, the LCD
display will change from Menu to Trim. To see the next
menu, press the Zero button for 3 seconds. Use the Zero
button to move down the directory.
• Use the Span button to select the displayed menu. The
same procedure will be used for the sub menus.
4. How to select a numerical value
•
Functions use numerical values: 12 Zero Adjustment, 22
Change Upper Range Value, 23 Change Lower Range
Value, 24 Dampening Second
• How to select numerical value: First, select an increasing
rate (10n), then change each decimal value to increase or
decrease as wanted. For example, select 3810 : Select
increasing rate 1000 -> Increase 3 times -> Select
increasing rate 100 -> Increase 8 times -> Select
increasing rate as 10 -> Increase 1 time
• To select the increase / decrease steps : SelInc message
will be displayed on the bottom of the LCD. Select
parameter and press the Zero button : The decimal value
will be changed when the Zero button is pressed. After set,
press the span button to execute the parameter.
• To set the required values using the Zero/Span buttons:
VALUE message will be displayed on the bottom of the
LCD.
1. Press the Zero button, the menu will increase 1 item.
2. Press the Span button, the menu will decrease 1 item.
3. After setting, save the parameter by pressing the
Zero+Span buttons.
• To set the final value, repeat 3 and 4.
• After setting the final parameter, exit the menu by pressing
the Zero+Span buttons.
Menu Tree for Zero+Span Button Function
3
0 seconds without any action, the button function menu will
r
eturn to normal operation.
C
AUTION