The OPTISONIC 7300 Biogas is an ultrasonic flowmeter for low pressure biogas, landfill and sewage gas applications. The flowmeter is ideally suited to measure biogas with a high CO2 content as well as small amounts of other media like H2S, nitrogen, hydrocarbons or condensation water. Its corrosion resistant titanium transducers provide a strong ultrasonic signal into the gas. The signal processing of the meter allows a better detection of small, strongly dampened acoustic signals.
Features & Options
- Bi-directional flow measurement over a wide dynamic range
- Integrated temperature measurement
- Integrated calculation of standard volume with optional integrated pressure sensor
- Insensitive to corrosive components in the gas (e.g. H2S)
- High accuracy: ±1% error of measured value (±2% of methane content)
- User-friendly parameterisation, monitoring and on-site verification
- Extensive sensor and process diagnostics
- Via HART® using the OPTICHECK DTM
- Verification report about device status with one click
- With lap joint flanges for lower overall weight
- Full bore design: No moving parts, no wear, no pressure loss
- No periodical maintenance needed
- Available as remote version with field converter
- Also for use in hazardous areas zone 1
General information
| Product type | Flowmeter |
| Product family name | OPTISONIC |
| Product positioning | For biogas, landfill and sewage gas applications |
| Measurement principle | Ultrasonic |
| Measured media | Gases |
Operating conditions
| Process pressure | max. 10 barg/ 145 psig |
| Process temperature | -40…+100°C/ -40…+212°F |
Materials
| Measuring tube | Austenitic stainless steel (1.4404/316L) |
Process connections
| Flange connections | EN (1092-1): DN50…300 (lap-joint flange) ASME (B 16.5): 2…8″ (lap-joint flange), 10…12″ (welded flange) |
Approvals/Standards
| Certificates/Approvals Ex | ATEX, cQPSus, IECEx, NEPSI |
Communication
| Analogue outputs | 4…20 mA |
| Discrete outputs | Limit switches, Pulse, Frequency, Status |
| Digital outputs | FOUNDATION™ Fieldbus, HART®, Modbus RTU |
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