Introductions
WESDUN is a manufacturer specializing in the production of Modular ultrasonic flow meter;Bi-directional flow meter.Modular type ultrasonic flow meter is one type ultrasonic flow meter with small size and competitive price. It’s working based on transmit-time working theory.
One ultrasonic sensor send ultra-sound wave and another one sensor could receive this wave. The transmit time from send to receive have relationship with the velocity of flow speed. Then, converter could calculate the flow speed based the transmit time.
Main technical Parameters
| ltems | Specifications |
| Accuracy | ±1% of reading at rates >0.2 mps |
| Repeatability | 0.20% |
| Principle | Transmit time |
| Velocity | ±32m/s |
| Pipe Size | DN15mm-DN6000mm |
| Display | LCD with backlight, display accumulated flow/heat, instantaneous flow/heat, velocity,time etc. |
| Signal Output | 1way 4-20mA output |
| 1way OCT pulse output | |
| 1 way relay output | |
| Signal Input | 3 way 4-20mA input achieve to heat measurement by connecting PT100 platinum resistor |
| Other Functions | Automatically record the positive,negative,net totalizer flow rate and heat. Automatically record the time of power-on/off and flowrate of the last 30 times.Replenish by hand or read the datas through Modbus communication protocol. |
| Pipe Material | Carbon Steel, stainless steel,cast iron, cement pipe,copper, PVC,aluminum,FRP etc. Liner is allowed |
| Straight Pipe Section | Up stram:10D;Down steam:5D; From the pump:30D (D means outer diameter) |
| Liquid Types | Water, sea water,industrial sewage, acid & alkali liquid, alcohol,beer, all kinds of oils which can transmit ultrasonic single uniform liquid |
| Liquid Temperature | Standard:-30℃-90℃,High-temperature:-30℃-160℃ |
| Liquid Turbidity | Less than 10000ppm, with a little bubble |
| Flow Direction | Bi-directional measuring, net flow/heat measuring |
| Environment Temperature | Main Unit:-30℃-80℃ |
| Transducer: -30℃-160℃,Temperature transducer:select on enquiry | |
| Environment Humidity | Main Unit: 85% RH |
| Transducer: standard is IP65, IP68(optional) | |
| Cable | Twisted Pair Line,standard length of 5m,can be extended to 500m (not recommended); Contact the manufacturer for longer cable requirement.RS-485 interface, transmission distance up to 1000m |
| Power Supply | DC24V |
| Power Consumption | Less than 1.5W |
| Communication | MODBUS RTU RS485 |
| Main Board | Transducer | |
| IP Grade | IP30 | IP68 |
| Humidity | ≤80% RH | |
| Temperature | -20~60℃ | -30~160°C |
Features
- 0.5% of linearity
- 0.2% of repeatability
- 4 flow totalizers
- Patent balanced lower-voltage multi-pulse ultrasonic igniting
- built-in date totalizers
- built-in data-logger
- Work properly near transverters
- 0.5 second totalizing period
- 100 Pico-second resolution of time measurement
Installation
“V” method installation:
The “V” method installation is a relatively standard installation method, which is easy to use and accurate in measurement. When installing the two sensors, the center line of the two sensors can be aligned horizontally with the axis of the pipeline. It’s used on DN15mm and DN400mm.
