Instrument Accuracy Specs: differential_pressure
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) | range max | range min | range unit | repeatability pct (%) | response time s (s) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| differential_pressure | capacitive high-accuracy | 17.8 | SIL 2 | 0.04 | 85 | -40 | 3,626 | High-accuracy DP; E+H PMD75 / Rosemount 3051S class; zero stability <0.025% URL/yr | 4-20mA HART FOUNDATION Fieldbus | 120 | -40 | 400 | 0 | inH2O | 0.005 | 1 |
| differential_pressure | capacitive standard | 17.8 | SIL 2 | 0.065 | 85 | -40 | 3,626 | Standard DP cell for flow/level; Rosemount 3051CD class; low DP stability critical | 4-20mA HART | 120 | -40 | 1,000 | 0 | inH2O | 0.01 | 1 |
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