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Ultrasonic Open Channel Flow Meter

Ultrasonic Open Channel Flow Meter

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Application of Ultrasonic Open Channel Flow Meter

The ULFM series Ultrasonic Open Channel Flow Meter is a remote version ultrasonic open channel flow meters (O.C.M.). It consists of two elements, a wall mounted host, which has a display and an integral keypad for programming, and a probe, which must be mounted directly above the surface to be monitored. Both of the host and the probe are plastic leak-proof structure. The ULFM series Open Channel Flow meter can be widely applied to the environmental protection, water treatment, sewage flow, irrigation, chemical, and other industries. We are open channel flow meter manufactures to provide robust and cheap open channel flow meter.

Features of Ultrasonic Open Channel Flow Meter

ULFM series Open Channel Flow Measurement instrument is capable of the following functions:

  • High detection accuracy, the flow meter measurement changes with 1mm, the accuracy of change in level is 1 mm;
  • Suitable for a variety of weirs and flumes, Parshall flumes (parshall flume flow meter), Right-angle triangle weir, Rectangular weir;
  • Open channel ultrasonic flow meter displays flow rate in L/S or M3/h;
  • Excellent anti-interference capability;
  • Clear display with enhanced 14 digit two line backlit LCD;
  • The cable length between probe and host up to 1000m;
  • The probe with leak-proof structure and IP68 protect grade;
  • Chemically resistant probe materials for maximum application flexibility;
  • Provided 4-20mA output and RS485 serial communication (MODBUS-RTU) output;
  • Provided programmable 6 relays at most for alarms;
  • Three button for programming or remote control for easy configuration and operation (opt.);

Ultrasonic Open Channel Flow Meter Technical data

The host TypeULFM (host)
Power supplyDC24V (±5%) 0.2A; AC220V (±20%) 0.1A
Display2 lines 14 digit backlit LCD
The instantaneous flow rate range0.0000~99999L/S or m3/h
The maximum of cumulative flow9999999.9 m3/h
Accuracy of change in level1mm or 0.2% of measured distance from the probe at still water. (whichever is greater)
Resolution1mm
Analogue output4-20mA into 500 Ohms, corresponding to instantaneous flow rate.
Relays outputs6 multi-function SPDT relays at most(optional), rated 5A /250VAC/30VDC, high, low and failsafe alarm and control corresponding to instantaneous flow rate or level.
Serial communicationRS485, MODBUS-RTU standard protocol
Ambient temperature-40℃~70℃
Temperature compensationIntegral in probe
Pressure range±0.1MP (press definitely)
Measure cycle1 second (changeable )
Parameter setting3 induction buttons / remote control
Cable glandPG9 /PG11/ PG13.5
MaterialABS
Protect gradeIP67
FixHang
Dimensions248H*184W*122D(mm)

 

 
The probe TypeLB-4 (probe) 
Open channel flow meter range0.00-4.00m 
Blind zone0.20m 
Ambient temperature-40℃~70℃ 
Temperature compensationIntegral in probe 
Pressure range0.2MPa 
Beam angle10 (3db) 
Cable length10m standard (can be extended to 1000m) 
MaterialABS, PVC or PTFE (optional) 
Protect gradeIP68 
FixScrew (G2) or flange (DN65/DN80/etc.) 

Ultrasonic Open Channel Flow Meter Model Selection

HLFMPower Supply 

 
AAC220V(±5%)
DDC24V(±20%)
OOthers

 
Weir and flume Standard
IISO Standard
CNational Standard

 
Output
ONo output
14-20mA output

 
Communication
C0No Communication
C1RS485 Communication

 
Relay
R0No
Rx“x” represents the number of relays , max 6

 
Cable Length
L10Standard 10 meters
Lx“x” is the length, max 1000m

 
Protection Box for host
0With protection box 
1Without protection box 
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