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It is portable, non-invasive and utilizes the transit-time difference for measuring flow rates in pipes. They are compact and lightweight instruments incorporating the latest electronics and signal processing technologies, with high performance and easy operations. These devices are perfect for on-the-go flow monitoring, capable of 20 hours continuous operation with built-in, rechargeable battery.
It is portable, non-invasive and utilizes the transit-time difference for measuring flow rates in pipes. They are compact and lightweight instruments incorporating the latest electronics and signal processing technologies, with high performance and easy operations. These devices are perfect for on-the-go flow monitoring, capable of 20 hours continuous operation with built-in, rechargeable battery.
Their screens offer easy to read text with convenient backlight for visual comfort. The efficient layout of the function keys adds to these units' easy to use programming. These series offer analog as well as a pulsed outputs.
Principles of Operation
Two sensors are placed on the exterior of the pipe, and each transmits an ultrasonic pulse through the pipe and fluid to the other. The velocity of the liquid flowing through the pipes causes the pulse to accelerate or decelerate. The difference in the transit times of the two pulses is used to calculate the flow rate. The use of transit time allows the flowmeter to be unaffected by pressure or temperature changes.
Features
The flowmeter can be used to measure clean liquids or oils that have less than 3% by volume of particulate content. Cloudy liquids such as river water and effluent can be measured along with cleaner liquids such as demineralized water.
Applications
| Service | Homogeneous liquids that do not contain air bubbles capable of ultrasonic wave propagation |
| Inputs | Lemo connector cable from sensors |
| Range | 0.33 to 65.62 ft/s (0.1 to 20 m/s) |
| Display | 240 x 64 pixel graphic display, high contrast black on white with backlight; Languages: English, French, German, Swedish, Italian, Spanish, Portuguese, Russian, Norwegian, and Dutch; 5.2" W x 1.5" H |
| Accuracy | ±0.5 to 2% of flow reading for flow rate > 0.66 ft/s (0.2 m/s) and pipe ID > 2.95" (75 mm); ±3% of flow reading for flow rate > 0.66 ft/s (0.2 m/s) and pipe ID in range 0.512 to 2.95" (13 to 75 mm); ±6% of flow reading for flow rate < 0.66 ft/s (0.2 m/s) |
| Power Requirements | 9 to 24 VDC, (1) 5-Cell NiMH battery, internal, factory replaceable (continuous operation time: 20 hours with back-light and output off) (recharging time: 6.5 hours, power adapter used) |
| Power Consumption | 10.5 W |
| Power Adapter | 110/240 VAC adapter. UK, US, European adapters included |
| Temperature Limits | -4 to 275°F (-20 to 135°C) |
| Outputs | Analog: 1 opto-isolated output: 4 to 20 mA, 0 to 16 mA or 0 to 20 mA (selectable); Error current: 0 to 26 mA (selectable); Load resistance: 620 Ω max; Pulse: 1 opto-isolated MOSFET relay, 150 mA max, 500 pps max, 200 Hz max. |
| Enclosure Rating | Converter: IP54; Transducers: IP51 |
| Materials | Flame retardant injection molded ABS plastic |
| Repeatability | ±0.5 % of measured value or ±0.066 ft/s (0.02 m/s) |
| Electrical Connections | Multi-pin Lemo plugs |
| Turbidity | < 3% by volume of particulate content |
| Permissible Air Content | < 3% by volume |
| Response Time | < 500 ms |
| Weight | Unit without accessories: 2.3 lb (1.06 kg); Unit with accessories in carrying case: 13.23 lb (6.0 kg) |
| Service | Homogeneous liquids that do not contain air bubbles capable of ultrasonic wave propagation |
| Inputs | Lemo connector cable from sensors |
| Range | 0.33 to 65.62 ft/s (0.1 to 20 m/s) |
| Display | 240 x 64 pixel graphic display, high contrast black on white with backlight; Languages: English, French, German, Swedish, Italian, Spanish, Portuguese, Russian, Norwegian, and Dutch; 5.2" W x 1.5" H |
| Accuracy | ±0.5 to 2% of flow reading for flow rate > 0.66 ft/s (0.2 m/s) and pipe ID > 2.95" (75 mm); ±3% of flow reading for flow rate > 0.66 ft/s (0.2 m/s) and pipe ID in range 0.512 to 2.95" (13 to 75 mm); ±6% of flow reading for flow rate < 0.66 ft/s (0.2 m/s) |
| Power Requirements | 9 to 24 VDC, (1) 5-Cell NiMH battery, internal, factory replaceable (continuous operation time: 20 hours with back-light and output off) (recharging time: 6.5 hours, power adapter used) |
| Power Consumption | 10.5 W |
| Power Adapter | 110/240 VAC adapter. UK, US, European adapters included |
| Temperature Limits | -4 to 275°F (-20 to 135°C) |
| Outputs | Analog: 1 opto-isolated output: 4 to 20 mA, 0 to 16 mA or 0 to 20 mA (selectable); Error current: 0 to 26 mA (selectable); Load resistance: 620 Ω max; Pulse: 1 opto-isolated MOSFET relay, 150 mA max, 500 pps max, 200 Hz max. |
| Enclosure Rating | Converter: IP54; Transducers: IP51 |
| Materials | Flame retardant injection molded ABS plastic |
| Repeatability | ±0.5 % of measured value or ±0.066 ft/s (0.02 m/s) |
| Electrical Connections | Multi-pin Lemo plugs |
| Turbidity | < 3% by volume of particulate content |
| Permissible Air Content | < 3% by volume |
| Response Time | < 500 ms |
| Weight | Unit without accessories: 2.3 lb (1.06 kg); Unit with accessories in carrying case: 13.23 lb (6.0 kg) |
