Instrument Accuracy Specs: flow_meter_ultrasonic
Accuracy, range, and performance specifications for process measurement instruments. Covers pressure transmitters (standard, high-accuracy, economy), differential pressure transmitters, temperature transmitters (RTD, thermocouple), flow meters (magnetic, vortex, Coriolis, ultrasonic, turbine), level transmitters (radar, GWR, ultrasonic, DP), pH analyzers, conductivity analyzers, dissolved oxygen sensors (amperometric, optical), and turbidity meters. Each record includes accuracy (% span or % reading), repeatability, turndown ratio, response time, ambient/process temperature range, max pressure, output signal, SIL rating, and MTBF. 28 records from Emerson, E+H, Yokogawa, Siemens, and Hach instrument datasheets.
| instrument type | measurement principle | MTBF years (years) | SIL rating | accuracy pct of span (%) | ambient temp range C max (degC) | ambient temp range C min (degC) | max pressure psi (psi) | notes | output signal | process temp range C max (degC) | process temp range C min (degC) | repeatability pct (%) | response time s (s) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| flow_meter_ultrasonic | transit-time (clamp-on / inline) | 15 | SIL 1 | 0.5 | 60 | 0 | 145 | Clamp-on class; ±0.5-2% rate depending on pipe/fluid conditions; requires uniform velocity profile (10D upstream); non-invasive | 4-20mA HART MODBUS | 120 | -40 | 0.3 | 2 |
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