Instrument Accuracy Specs: temperature_transmitter
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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| temperature_transmitter | 4-wire RTD Pt100 | 20 | SIL 2 | 0.25 | degC | 85 | -40 | 750 | IEC 60751 Class A Pt100; 0.1 degC accuracy at 0 degC; accuracy degrades at extremes; includes transmitter electronics error +/-0.1 degC | 4-20mA HART | 850 | -200 | 850 | -200 | degC | 0.01 | 1 |
| temperature_transmitter | thermocouple type K | 15 | SIL 2 | 1.5 | degC | 85 | -40 | 750 | Type K TC; accuracy ±1 degC or 0.75% reading (whichever greater per IEC 60584); transmitter adds ±0.5 degC; cold junction comp required | 4-20mA HART | 1,372 | -200 | 1,372 | -200 | degC | 0.05 | 2 |
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