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6.1.8 Alarms (Option output)
Switch output alarm signal is generated through switching on/off OCTs or relays and output
to the external circuit, it is generated under the following conditions:
1.
Transducers can’t receive ultrasound signals;
2. Ultrasound signals that transducers received are too poor;
3. The flowmeter is not under normal operation;
4. The flow is reversed;
5. The analogue output exceeds 100% of the measuring range;
6. The frequency signal exceeds 120% of the measuring range;
7. Transient flow exceeds the settings (use software alarm to set the range of flow. There
are two software alarms, which are Alarm #1 and Alarm #2T respectively.
How to set? For example 1: It requires the relay outputs alarm signals when the transient
flow exceeds 300~1,000m3/h, settings are as follows:
(1) Menu 34, Relay Settings-Options-Alarm 1#.
(2) Menu 34, Alarm 1#, lower limit 300;
(3) Menu 34, Alarm 1#, upper limit 1,000;
6.1.9 Product Serial Number
Each flowmeter is provided with a unique product serial number. The serial number is the
unique mark for the manufacturer and users for tracing product information and
management. You could view your flowmeter’s serial number in M 50 menu.
Note:
Please refer to “Details about Menus” for operatio
n of other menus.