>> Ultrasonic Flow meter User Manual
19
M66
AI5 value range.
Used to enter temperature/pressure values that are corresponding to 4mA and 20mA
input current.
M67
Windows to setup the frequency range (lower and upper limit) for the frequency output
function. Valid range is 0Hz-9999Hz. Factory default value is 0-1000 Hz.
For Version-12, Version-13, Version-14 flow meters, you need a hardware module,
which shall be plugged to the Serial Expanding Bus, for the frequency output function.
Please remember to order the module if you need frequency output function.
For Version-15 flow meter, you need to indicate on your orders that you need the
frequency function; Otherwise you will get a flow meter which has no frequency output
circuits.
M68
Window to setup the minimum flow rate value which corresponds to the lower
frequency limit of the frequency output.
M69
Windows to setup the maximum flow Rate value that corresponds to the upper frequency
limit of the frequency output.
M70
LCD display backlight control. The entered value indicates how many seconds the
backlight will be on with every key pressing. If the enter value is great than 50000
seconds, It means that the backlight will always keeping on.
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 equals ‘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 output by the OCT circuit, you 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 Controller
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 viaRS485
18.Daily Timer (M51) 19.Timed alarm #1
20. Timed alarm #2
21.Batch Total Full 22. Timer by M51
23. Batch 90% Full
24. Key Stroking ON
24.Disable BEEPER
