Alarm and description of system conditions

Alarm - A Major Abnormality

Suggestions of system abnormality are the same with Failed message level mentioned in NAMUR NE107 standard.

The Output Display when the flow sensing function is abnormal or the host is abnormal.

“Error” is displayed on the LED screen, and the LCD backlight blinking red light.

Alarm - A Following explains error message bits from higher bit (7th digit) to lower bit (0th digit):

Bit	Definition Description of Errors
7	na
6	na
5	na
4	The flowmeter is not on the pipeline (off pipe)
3	Iout (0/4-20mA) IC Failure=1. Parameter D14 must be in the “on” or “do not disturb” state. (FW2.2.0 new function)
2	Iout (0/4-20mA) IC Overheating =1. Parameter D14 must be in the “on” or “do not disturb” state. (FW2.2.0 new function)
1	Abnormal pipe diameter sensing element.
0	Abnormal communication of ultrasonic components.

Alarm - B Out of Specification

Indicates out-of-range usage of flowmeter. Suggestions of system abnormality are the same with Out of Specification message level mentioned in NAMUR NE107 standard.

Indicates out of designed range flow volume and other matters needing attention. Could be set up in the main class of parameter D.

Display on the LED screen remains the same, and the LCD backlight will have a continuous red light.

Alarm - B Following explains error message bits from higher bit (7th digit) to lower bit (0th digit):

Bit	Definition Description of Errors
7	na
6	Cumulative volume exceeds target.
5	Data is larger than the corresponding upper limit of the analog output current.
4	Data is smaller than the corresponding lower limit of the analog output current.
3	Flow volume is higher than 6m/s.
2	(When OCT is set to Pulse output) Pulse width is too big, causing overlapping.
1	Instantaneous flow volume is higher than the defined upper limit.
0	Instantaneous flow volume is less than the defined lower limit.

Alarm - C Maintenance Required

Indicates maintenance requirement of flowmeter. Suggestions of system abnormality are the same with Maintenance Required message level mentioned in NAMUR NE107 standard.

Display on the LED screen remains the same, and the LCD backlight will have a continuous red light.

Alarm - C Following explains error message bits from higher bit (7th digit) to lower bit (0th digit):

Bit	Definition Description of Errors
7	na
6	na
5	na
4	na
3	Poor ultrasonic signal (0 bars)
2	The flowmeter installation problem leads to poor signal, it is recommended to lock the flowmeter evenly to achieve the best signal quality.
1	Iout(0/4-20mA) Excessive line impedance or no wiring = 1, normal = 0. Parameter D14 must be in the “on” or “do not disturb” state.
0	na

Alarm - D Function Check

Suggestions of system abnormality are the same with the Function Check message level mentioned in NAMUR NE107 standard.

The bit will be 1 when the device LCD screen is not one of the monitoring screens.

When the LED screen displays the set-up menu, the LCD backlight will have orange lighting.

Alarm - D Following explains error message bits from higher bit (7th digit) to lower bit (0th digit):

Bit	Definition Description of Errors
7	na
6	na
5	na
4	na
3	na
2	na
1	na
0	The device is not in the monitoring screen. (It will become 1 in simulation mode and Setup screen)

System Status

Following explains status bits from higher bit (7th digit) to lower bit (0th digit):

Bit	Definition Description of Errors
7	na
6	na
5	na
4	na
3	na
2	na
1	na
0	OCT is conducting (Close)=1, OCT is not conducting (Open)=0 Pulse output status is not included.