Original
By certification 
Sensor installation
Ultrasonic probe was install on the top of the flume, measuring the water level in the flume. Transmitter calculate the open channel instantaneous flow rate according to the water level and flume type and get the value of cumulative flow.
Open channel ultrasonic flow meter parameters:
Liquid level resolution |
1mm. |
Liquid level error |
1mm or 0.2% of full measurement range (The maximum value, calm water) |
Display method |
2-line 14 LCD (with backlight) |
Instantaneous flow rate range |
0.0000~99999L/S or m³/h |
Maximum cumulative flow |
9999999.9 m³ |
Analog signal output |
one path DC4-20mA current corresponding to flow rate. |
Load resistance |
0~500Ω |
Communications |
Serial communication, standard MODBUS-RTU protocol. |
Relay Output |
upper limit ,lower limit alarm and control.( instantaneous flow rate and water level ) high level ,low level and breakdown alarm ect . |
Mode of relay |
normally open or closed.(Can be setup) |
Quantity of relay |
at most six. |
Specification of relay |
5A 250VAC/30VDC |
Power supply |
DC: DC24V(±5%) 0.2A |
Detection Period |
1S ( can be adjust) |
Ambient Temperature |
-40C to +70C |
Casing materials |
ABS |
Protection grade of casing |
IP67 |
Cable gland cover |
PG9/PG11/PG13.5 |
Parameter setting method |
3 pcs inductive buttons |
Install method |
Wall mounted |
Casing Size |
248X184X122mm |
ULFM LB-4 SENSOR
Range |
0.00-4.00m |
Beam angle |
10 (3db) |
Blind zone |
0.20m |
Temperature |
-40℃~70℃ |
Pressure range |
0.2MPa |
Process connection |
G2 or flange |
Cable length |
10m standard (can be extended to 1000m) |
Material |
ABS, PVC , PTFE (optional) |
Protect grade |
IP68 |
