| 测量原理 | 超声波 |
| 主要特点 | The device for accurate, reliable biogas measurement with loop‐powered technology. Integrated real‐time methane fraction measurement. Inline flowmeter designed for wet biogas and digester gas under fluctuating process conditions.
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| 特点 | Optimized for low pressure gas – specialized sensor design. No additional pressure loss – full bore design. Process transparency – diagnostic capability. Multivariable device: flow, temperature and methane. Medium temperature: 0 to 80 °C (32 to 176 °F).
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| Transmitter features | Convenient device wiring – separate connection compartment. Safe operation – no need to open the device due to display with touch control, background lighting. Integrated verification – Heartbeat Technology. Loop‐powered technology. Robust dual-compartment housing.
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| 直径 | Single‐path version: DN 50 (2"), DN 80 (3")
Two‐path version: DN 100 to 200 (4 to 8")
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| Wetted materials | Sensor: 1.4404/1.4435 (316L)
Transducer: HNBR
Temperature sensor (option): AFM 34
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| Measured variables | Volume flow, corrected volume flow, corrected methane volume flow, energy flow, methane fraction, calorific value, temperature
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| 测量误差 | Volume flow (standard):
‐ ±1.5 % o.r. for 3 to 30 m/s (9.84 to 98.4 ft/s)
‐ ±3 % o.r. for 1 to 3 m/s (3.28 to 9.84 ft/s)
Volume flow (option):
‐ ±0.1 % o.f.s. for 0.3 to 1 m/s (0.98 to 3.28 ft/s)
‐ ±1.5 % o.r. for 1 to 30 m/s (3.28 to 98.4 ft/s)
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| 量程 | Standard: 1 to 30 m/s (3.28 to 98.4 ft/s)
Option: 0.3 to 30 m/s (0.98 to 98.4 ft/s)
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| 压力范围 | 11 bar a (159 psi a)
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| 过程温度 | 0 to +80 °C (+32 to +176 °F)
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| 环境温度 | Flange material carbon steel: –10 to +60 °C (+14 to +140 °F)
Flange material stainless steel: –40 to +60 °C (–40 to +140 °F)
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| Transmitter housing material | AlSi10Mg, coated; 1.4404 (316L)
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| 电子插件的防护 | IP66/67, type 4X enclosure
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| 显示/操作 | 4‐line backlit display with touch control
(operation from outside)
Configuration via local display and operating tools possible
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| 输出 | 4‐20 mA HART (passive)
4‐20 mA (passive)
Pulse/frequency/switch output (passive)
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| 输入 | Current input 4‐20 mA (passive)
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| 通信 | HART
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| Power supply | DC 12 to 35 V (4‐20 mA HART with/without pulse/frequency/switch output)
DC 12 to 30 V (4‐20 mA HART, 4‐20 mA)
DC 12 to 35 V (4‐20 mA HART, pulse/frequency/switch output, 4‐20 mA input)
DC 9 to 32 V (PROFIBUS PA, pulse/frequency/switch Output)
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| 防爆认证 | ATEX, IECEx, cCSAus, NEPSI, INMETRO, TIIS
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| Metrological approvals and certificates | Calibration performed on accredited calibration facilities (acc. to ISO/IEC 17025)
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| Pressure approvals and certificates | PED
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| Material certificates | 3.1 material (wetted parts) |