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Rosemount
Rosemount 148 Temperature Transmitter
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148: head-mount; Pt100 −200…850 °C; RTD/TC/ohm; 4–20 mA. RFQ.
Download datasheet PDF
RFQ cart holds BOM lines only. Submit for engineering quote.
Key parameters
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
Fits basic single-point temperature transmission where you need a Rosemount 148—head-mount two-wire 4–20 mA transmitter accepting Pt100 (−200…850 °C) plus RTD, thermocouple, and ohm inputs.
Key advantages
- Inputs — Pt100 −200…850 °C; RTD, T/C, ohm
- Output — Two-wire 4–20 mA
- Form — Head-mount temperature transmitter
- Use — Single-channel process temperature
- Platform — Rosemount 148
Typical applications
- Thermowell head transmitters.
- Simple RTD/TC loops.
- OEM temperature panels.
Selection guide
- Sensor type
- Head vs rail (248R)
- Calibration range
Common mistakes
- Expecting HART (use 248H/248R).
- Wrong sensor wiring.
- Multi-input needs (use 848T).
When to RFQ / what to tell us
- Sensor type, range.
- Quantity, ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 38779 |
| Brand | Rosemount |
| Model | Rosemount 148 Temperature Transmitter |
| Product type | Temperature Transmitter |
| Type | Head-mount temperature transmitter (Rosemount 148) |
| Inputs | Pt100 −200…850 °C; RTD, T/C, ohm |
| Output | Two-wire 4–20 mA |
| Feature | Basic single-channel temperature transmitter |
Documents
FAQ
Q: Output? A: Two-wire 4–20 mA.
Q: Pt100 range? A: −200 to 850 °C class.
Q: What should I send for a quote? A: Sensor/range, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| 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 |