Melan Measurement & Control Instruments (Shanghai) Co.,Ltd.
MELAN MEASUREMENT & CONTROL INSTRUMENTS (SHANGHAI) CO., LTD.
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Parshall Flume Open Channel Ultrasonic Flow Meter with 24VDC Power Supply
MLOF series is non-contact ultrasonic open channel flow meter, with low blind area, high sensitivity, high stability. It consists of ultrasonic probe and the host, mainly used for measuring water conservancy irrigation, sewage plants, enterprises and institutions of the flow rate of the sewage outfalls, urban sewage and chemical enterprise part of the flow measurement.
1. FEATURES
☆ Multiple functions, with calculating,control,transmitting and other functions.
☆ Match with various weir tank. Right-angle triangle weir,rectangular weir,groove,parshall flume,throat channel slot.
☆ Accurate measurement , automatic temperature compensation function, automatic filtering system, strong anti-jamming.
☆Accurate measurement in colder regions with electric heat tracing sensor.
☆With IR remote control, easy to operate.
☆ Large screen display, double line 14 bit LCD liquid crystal display (with backlight),
characters of the man-machine interface.
☆ With RS485 serial communication, the standard MODBUS RTU protocol, can
communicate with Ethernet device, PC, PLC and DCS.
☆ Can provide up to 6 relays, can set the upper limit and lower limit alarm and control
(instantaneous flow rate and water level), Can be set high, low and fault alarm
2. TECHNICAL PARAMETERS
Technical Index
Weir&Flume Match: Chinese Standard: Parshall Flume, Triangular Weir ,Rectangular Weir ,Non-throat Flume
ISO Standard: Parshall Flume
USBR Standard: Long-throat Flume (Rectangular Flume,Trapezoid Flume)
Probe: 4m(otherwise other range and anti-corrosion requirements,indicate when you order it)
Accuracy: 0.2% Full span (In air)
Display Resolution: 1mm
Mode of Indication: 14 Digit LCD in 2 rows
Output Current: DC4~20mA/RS485/Hart Serial communication RS485(modbus standard protocol)
Output Load: 0~500Ω
Output Resolution: 0.03% Full span
Relays: 2,4,5,6(5A 250VAC/30VDC)
Baud rate: 19200/9600/4800
Parameter set up: 3 induction buttons
Temperature Range: -40 ºC ~75 ºC (LCD:-20 ºC ~+70ºC)
Temperature compensation: The whole range is automatic
Pressure Range: ±0.1MP (press definitely)
Power Supply: DC24V(±5%) 0.2A AC220V(±20%) 0.1A
Cable: Ø6-12mm
Single Wire Diameter: Ø0.5-1.78mm
Cable Fix: PG13.5/M20
Measure Cycle: 1.5second
Crust Material: ABS
Sensor Material: ABS/PVC/PTFE
Protect Grade: IP67
2. Installation drawing
3. Configuration