Instrument Accuracy Specs: dissolved_O2
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 absolute | accuracy absolute unit | 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| dissolved_O2 | amperometric (Clark cell) | 3 | SIL 1 | 0.1 | mg/L | 45 | 0 | 145 | Membrane Clark-type (E+H Oxymax COS61 / Hach LDO); ±0.1 mg/L or 1% reading; membrane fouling and depletion require frequent maintenance; T90 < 60 s | 4-20mA HART | 50 | 0 | 20 | 0 | mg/L | 0.5 | 60 |
| dissolved_O2 | optical luminescence quenching | 5 | SIL 1 | 0.1 | mg/L | 50 | 0 | 145 | Optical DO (Hach LDO2 / E+H Oxymax COS81D); ±0.1 mg/L; no membrane; cap replacement 1-2x/year; no electrolyte; lower maintenance than Clark cell | 4-20mA HART | 60 | 0 | 20 | 0 | mg/L | 0.3 | 30 |
This is a sample. Search the full instrument accuracy specs dataset and 300+ more by creating a free account and accessing the database.
Get started for FREE