Product Manual

Wall Mounted Ultrasonic Flowmeter---User Manual
18
M71
LCD contrast control. The LCD will become darker or brighter when a value is entered.
M72
Working timer. It can be cleared by pressing ENT key, and then select YES.
M73
Window to setup the lower limit of flow rate for Alarm#1.
When the flow rate is below the set value, Alarm#1 e
q
uals ‘on’
M74
Window to setup the upper limit of flow rate for Alarm#1.
When the flow rate is above the set value, Alarm#1 equals ‘on’
There are two alarms in the flow meter, and every alarm can be pointed to alarm output
devices such as the BUZZER or OCT output or RELAY output. For example, if you want
the Alarm#1 is to out
p
ut b
y
the OCT circuit,
y
ou need to set M78 at selection item 6.
M75
Window to setup the lower limit of flow rate for Alarm#2.
M76
Window to setup the upper limit of flow rate for Alarm#2.
M77
Buzzer setup.
If a proper input source is selected, the buzzer will beep when the trigger event occurs. The
available trigger sources are:
0. No Signal 1. Poor Signal
2. Not Ready (No*R) 3. Reverse Flow 4. AO Over 100%
5. FO Over 120% 6. Alarm #1 7. Reverse Alarm #2
8. Batch Control 9. POS Int Pulse 10.NEG Int Pulse
11.NET Int Pulse 12.Energy POS Pulse 13.Energy NEG Pulse
14.Energy NET Pulse 15.MediaVel=>Thresh 16.MediaVelo<Thresh
17.ON/OFF viaRS232 18.Daily Timer (M51) 19.Timed alarm #1
20. Timed alarm #2 21.Batch Totalizer Full 22. M51 Timer
23. Batch Totalizer 90% 24. Key Stroking ON 25.Disable BEEPER
The default: 24 Ke
y
Strokin
g
ON
M78
OCT (Open Collect Transistor Output)/OCT1 setup
By selecting a proper input source, the OCT circuit will close when the trigger event
occurs. The available trigger sources are:
0. No Signal 1. Poor Signal 2. Not Ready(No*R)
3. Reverse Flow 4. AO Over 100% 5. FO Over 120%
6. Alarm #1 7. Reverse Alarm #2 8. Batch Control
9. POS Int Pulse 10.NEG Int Pulse
11.NET Int Pulse 12.Energy POS Pulse 13.Energy NEG Pulse
14.Energy NET Pulse 15.MediaVel=>Thresh 16.MediaVelo<Thresh
17.ON/OFF viaRS232 18. Daily Timer (M51) 19.Timed alarm #1
20. Timed alarm #2 21.Batch Totalizer Full 22. Periodically M51 Timer
23.Batch Totalizer 90% 24. FO Output 25. Oct Not Using
The OCT circuit does not source voltage at its output. It must be connected with an
external power and pull-up resistant for some occasions.
When the OCT circuit is close, it will draw current. The maximum current shall not be
over 100mA.
Attention: the maximum volta
g
e a
pp
lied to OCT can not be over 80 volts.
M79
Relay or OCT2 setup
B
y
selectin
g
a
p
ro
p
er in
p
ut source, the RELAY will close when the tri
gg
er event occurs