MicroFlow provides a non-contacting, velocity measurement solution for open channels. Use MicroFlow as a stand-alone device for simple velocity measurement or pair it with a dB Ultrasonic Transducer for a complete area-velocity system.
Area-velocity calculations using MicroFlow provide a cost-effective flow measurement solution compared to the installation of a Primary Measuring Device (PMD). Additionally, the hydraulics of a site can sometimes not allow for restriction within the channel, therefore it would be unsuitable for a PMD to be installed, the MicroFlow provides a viable solution.
Area-Velocity Measurement for Channels <1.5 Meter Wide
For channels less than 1.5 m (4.9 ft) wide, MicroFlow can be combined with the dBMACH3 flow transducer (or another dB Transducer) and a FlowCERT controller to gain accurate area-velocity readings.
Area-velocity for Channels >1.5 Meter Wide
For larger channels such as rivers or effluent flow channels that are more than 1.5 m (4.9 ft) wide, more than one MicroFlow should be used to provide improved measurement, averaged across the wider flow profile, with the selected dB Transducer and an Ultimate Controller for an area-velocity flow system that averages the velocity from multiple sensors across the channel, ensuring accuracy in difficult to achieve straight-run conditions.
Software & Technology
The MicroFlow sensor uses K-Band radar technology and Pulsar Measurement’s unique analysis software takes readings from the whole width of the channel. If more than one MicroFlow is being used, an average reading will be calculated back in the control unit. To gain the most accurate and reliable reading, the end-user should make sure that the MicroFlow unit is mounted at 45 degrees to the water surface.
The K-Band radar technology works by using short pulses of microwaves, which are transmitted by an enclosed antenna on the face of the unit. When reflected off a moving surface, the signal experiences a shift in frequency characteristics. The reflected signal is captured by the onboard microprocessor via the antenna and analyzed to determine the velocity.
Read some case studies via the Downloads tab below to find out how to use the MicroFlow Velocity Sensor in the field.
- Non-contacting
- Cost-effective
- Lightweight, compact and robust design
- Minimal installation costs
- No interuption to process
- Maintenance Free
- ATEX Ex mb Zones 1 & 2 approval
- RS485 Modbus
| General Specifications | |
|---|---|
| Spec name: | Description: |
| Sensor Body Dimensions: | 90 mm x 140 mm (3.54 in x 5.51 in) |
| Weight: | 1 kg (2.2 lbs) |
| Sensor Body Material: | Valox 357 |
| Maximum Separation: | Up to 500 m (1,640 ft) |
| Max. and Min Temperature (Electronics): | -20 °C to +60 °C (-4 °F to +140 °F) |
| Velocity Range: | 0.3 m/s to 6 m/s (0.98 ft/s - 19.7 ft/s) |
| Optimum Installation: | Install at an angle of 45° in line with the flow. More information is provided within the manual. |
| Max. Channel Width: | 1.5 m (4.92 ft) |
| Beam Width: | 20° inclusive |
| Options | |
|---|---|
| Options: | Description: |
| Velocity Interface | For channels less than 1.5 m (4.92 ft) wide - provides a simple interface for the MicroFlow Sensor |
| FlowCERT & dBMACH3 Transducer | For channels less than 1.5 m (4.92 ft) wide |
| dBMACH3, Ultimate Controller, Speedy velocity sensor | For channels more than 1.5 m (4.92 ft) wide, more than one MicroFlow sensor is needed and can be combined with a dBMACH3 flow transducer and an Ultimate Controller with an optional Speedy sensor for a full open channel system |
| Mounting Brackets | For easy installation |
| MicroFlow-i | Optional loop powered version |
| Point connector | Fitted to cable (with fuse) |
| VIETCIS helps thermal power plant of Formosa Ha Tinh Steel Corporation (FHS) monitor the inlet water flow. | Download |
| Open Channel Flow Measurement at a copper mine in China | Download |
| Accurate and Reliable Non-Contacting Open Channel Flow Measurement for Sewage Treatment Works in Hong Kong. | Download |
| Succesful open channel flow measurement for Jurong's Water Reclamation Plant. | Download |
| Non-contacting Area-Velocity Flow Measurement Without a PMD. | Download |
| Product Brochure | Download |
| Datasheet | Download |
| Red Star Instruments, Taiwan provide non-contacting open channel flow measurement | Download |
| Installation Manual | Download |
| Instruction Manual | Download |
| Technical Drawing (UNCONTROLLED COPIES) | Download |
| MicroFlow PC Software V3.4.0 (supports FarSight) | Download |
| Version 1.0.14 (RS485) Firmware | Download |
| Ex mb Certificate | Download |
| FM Certificate of Conformity (US) | Download |
| FM Certificate of Conformity (CAN) | Download |
| Ex mb Certificate | Download |
| MicroFlow & MicroFlow-i FM Manual | Download |
| MicroFlow and FlowCERT on the River of Life Project, Kuala Lumpur, Malaysia. | Download |
| Case Study | Rainwater draining, flow monitoring for a chemical plant in Changshu, Jiangsu Province, China. | Download |
| Pulsar Measurement Product Warranty | Download |
- CE Approval
- ATEX Ex II 2 G D
- ATEX Ex mb IIC T4 Gb
- ATEX Ex mb IIIC T135 °C Db
- ATEX Ta= -20 °C to +60 °C
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