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Rosemount
Rosemount 148 Temperature Transmitter
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Parámetros clave
Accuracy
Pt100 α=0.00385 typical digital ~0.3 °C class with ±0.1% D/A of span (see PDS accuracy table)
Output
2-wire 4–20 mA analog (no HART)
Supply
Standard 12–42.4 Vdc; Intrinsic Safety 12–30 Vdc; minimum across terminals 12 Vdc
Ambient temperature
Operating −40 to +85 °C (−40 to +185 °F); storage −50 to +120 °C
Mounting
DIN B head mount with enclosure options
Sensor Inputs
Single sensor; universal RTD, thermocouple, ohms
| Parámetro | Valor |
|---|---|
| Accuracy | Pt100 α=0.00385 typical digital ~0.3 °C class with ±0.1% D/A of span (see PDS accuracy table) |
| Output | 2-wire 4–20 mA analog (no HART) |
| Supply | Standard 12–42.4 Vdc; Intrinsic Safety 12–30 Vdc; minimum across terminals 12 Vdc |
| Ambient temperature | Operating −40 to +85 °C (−40 to +185 °F); storage −50 to +120 °C |
| Mounting | DIN B head mount with enclosure options |
| Sensor Inputs | Single sensor; universal RTD, thermocouple, ohms |
| Isolation | Input/output isolation 500 Vac rms (707 Vdc) |
| Humidity | 0–95% RH non-condensing |
| Update Rate | <0.5 s; turn-on <6 s (damping 0) |
| Damping | 32 s maximum, 5 s default |
| Configuration | PC-based configuration interface (programmer, cables, software) |
| Status Note | Emerson catalog lists 148 as obsolete; PDS/manual remain public OEM references |