Instrument Accuracy Specs: level_transmitter_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 reading (%) | 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) | range max | range min | range unit | repeatability pct (%) | response time s (s) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| level_transmitter_ultrasonic | ultrasonic pulse-echo | 12 | SIL 1 | 0.25 | 60 | -20 | 0 | Non-contacting; ±0.25% of range; limited to ~20 m range; blanking distance 0.1-0.5 m; vapor/foam can degrade accuracy; Siemens SITRANS LU240 | 4-20mA HART | 60 | -20 | 20 | 0 | m | 0.1 | 1 |
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