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Systec - Model deltawaveSUF -Gas Ultrasonic Flowmeter
systec Controls` deltawaveSUF multi-path ultrasonic flowmeter puts an end to expensive, complicated gas flow measurement. Until now, the accurate measurement of gas volumes has been very complex and expensive. Although mechanical meters measure flow very accurately, they ignore the influence of pressure and temperature fluctuations, which leads to very large errors. For this reason, especially for large consumers, mechanical meters are supplemented with additional pressure and temperature sensors, and their influence is then calculated and corrected in volume correctors. Not only does this sound complicated, it is also expensive and requires a great deal of effort to achieve accurate measurement.
systec Controls has been developing ultrasonic flow meters for over 20 years. Flow measurement using the ultrasonic transit time method has many advantages, in particular very wide measuring ranges, outstanding accuracy, virtually no drift in the measured values as it is a digital time measurement. There are no moving parts and no analogue components to wear or age.
The development of the process for a stationary gas meter was requested by our customers in the gas supply industry. As a result, deltawaveSUF has been designed to be as compatible as possible with existing mechanical gas meters. In most cases it can simply replace previously installed turbine meters. Both the dimensions and the measuring range have been adapted accordingly.
If there is no power supply, deltawaveSUF will run on the integrated battery for 5 years. Pressure, temperature, volume flow, standard volume flow and the counter can be read on the large display. Daily and hourly values are safely stored in the integrated data logger.
Thanks to the powerful battery and the low power consumption, the device can even be used in places where there is no external power supply.
The basic version of deltawaveSUF has HF and LF counting pulses; Modbus and 4..20 mA outputs are also available as options. M12 connection cable and operating instructions are included.
- Power supply: Battery operated without external power supply: At least 4 years. External power supply 5 - 26 VDC
- Insulation resistance: The insulation resistance between the external power terminals, signal output terminals and the case is more than 20 MΩ.
- Media: Natural gas, propane, butane, LPG, air, nitrogen and other gases
- Temperature measuring range (medium): -25°C … +60°C
- Pressure measuring range: 0..4 bar abs
- Temperature Pressure: Built-in digital temperature and pressure sensor, pressure error less than 0.5 kPa, temperature error less than 0.5°C.
- Environmental conditions: -25°C … +60°C, ≤ 90% RH
- Pressure drop: Less than 1.0 kPa (10 mbar)
- Accuracy class: Class 1.0; optional class 0.5
- Signal output: HF pulse: external drive voltage 2.5-30 VDC, output test pulse signal, maximum frequency 5 kHz
- LF pulse: external drive voltage 2.5-26 VDC, output test pulse signal, 1/1 m3
- Digital interface: RS485, Modbus-RTU, NB_IOT, GPRS
- Analogue output (optional): Compensated flow rate (Nm3/h) as 4..20 mA (passive)
- LCD display: Total volume, flow rate, temperature, pressure, battery, NB-IOT signal, alarm
- Explosion protection: Ex ia Zone 1 CNEX, IEC (in preparation) ATEX (in preparation).
- Calibration capability: In preparation
- Wetted material: Aluminium, stainless steel, glass
- Efficient, reliable and cost-effective gas flow measurement
- Data available at all times thanks to automatic data backup
- Only short inlet distances required
- Up to 5 years continuous operation from a single battery pack
- Near zero leakage