Ultrasonic Flowmeters
For flow measurement applications in rural areas where electrical power is not accessible, the EnduroFlow Series EF12 solar-powered ultrasonic flow meter provides an ideal solution. It has a solar panel, a rechargeable battery and a low-power consumption high-performance ultrasonic flowmeter. All the components, except transducers, are housed in a weather-proof robust enclosure.
The EF12 solar powered flowmeter has a flash memory which can save the last 512 daily net flow values and the last 128 monthly net flow values. For remote areas where cellular wireless service is available, a 4G modem can be added to the device so that the flow and alarm information can be transmitted to a center office automatically on a preset schedule. Please look at the Spire Metering’s uGalaxy wireless telemetry system for more details.
 Clamp-On Transducer  Insertion Transducer  Flow-Cell Transducer |
Depending on transducer used, the EF12 product family comes as three varieties: EF12B clampon ultrasonic flowmeter, EF12C insertion ultrasonic flowmeter and EF12-F flow-cell ultrasonic flowmeter. All of them have better than 1% accuracy. Click on the “Your Application” tab to tell us where you need to measure today!
In general, EF12 is an ideal solution for accurate flow measurement in remote area where electrical power is not accessible. With EF12, you can build a remote flow monitoring network to effectively manage liquid (oil, water, etc.) distribution as well as detect pipeline leakages. The applicable liquids include:
| Flow Velocity | ± 10 m/s (± 32 ft/s). Bi-directional |
| Accuracy | ±1% of reading ±0.008m/s (±0.03ft/s) in velocity* |
| Repeatability | 0.2% |
| Response Time | 0.5s. Configurable between 0.5s and 99s |
| Display/Keypad | LCD with backlight. 2 x 20 letters. 4 x 4 tactile-feedback membrane keypad. Displays instantaneous flow rate, flow total (positive, negative and net), velocity, time, analog outputs/input |
| Units | English (U.S.) or metric |
| Parameters Measured | Volumetric flow rate, total flow, velocity, analog inputs |
| Totalizers | Positive totalizer, negative totalizer, net totalizer, daily totalizer, monthly totalizer, yearly totalizer, manual totalizer |
| Security | Keypad can be locked with password |
| Current Output | 0/4-20mA isolated output for flowrate, velocity or sound speed. Impedance 0-1k. Accuracy 0.1% |
| Digital Output | Optically isolated OCT (Open Collector Transistor) output. Up to 0.5A load. Can be programmed as: • Pulse signal for flow totalization • ON/OFF signal for special event such as overflow, no flow, reverse flow, leakage alarming, and more • START/STOP signal for batch control Can be used to drive pulse counter, external relay, alarm, PLC counter |
| Relay Output | 1A@125VAC or 2A@30VDC. Can be programmed as: • Pulse signal for flow totalization • ON/OFF signal for special event such as overflow, no flow, reverse flow, leakage alarming, and more • START/STOP signal for batch control Can be used to drive pulse counter, external relay, alarm, PLC counter, or, to control pump, valve, light |
| Sound Alarm | One sound alarm, programmable to specific event such as overflow, no flow, reverse flow, leakage alarm |
| Inputs | One 4-20mA input pressure or liquid level transmitter. This function is only available upon request |
| Recording | Automatically records the daily total of the last 512 days, the monthly total of the last 128 months. |
| Communication Interface | Isolated RS-485 with power surge protection. Supports the MODBUS protocol. Optional 4G module for wireless networking, remote monitoring and remote control. |
| Software | Optional StufManager PC software for real-time data acquisition. |
| Telemetry** | uGalaxy 4G wireless telemetry systems are available upon request |
| Enclosure | • Dimensions For main unit: 203mm x 254mm x 102mm (12” x 10” x 4”) For Solar Panel: 420mm x 420mm x 25mm (17” x 17” x 1”) • Features Weather-Proof Polycarbonate enclosure, (IP66) High Impact, UV resistant, UL-50/c-UL Listed. |
| Weight | 12kg (24lbs) |
| Environment Temp | • For main unit: 0-60°C (0-140°F) • For Solar Panel: -40-80°C (-40-176°F) • For Transducer: -20-80°C (-4-176°F) |
| Power sources | Solar Powered by 20W Solar Panel, 12V/17AH rechargeable battery already built-in to meter enclosure. |