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Instrumentation & Sensors
Head-mount 4–20 mA Temperature Transmitter
Model: TT-420
Programmable 2-wire transmitter for PT100 and thermocouples with 4–20 mA output.
- PT100 / thermocouple J K T N input
- 2-wire 4–20 mA, HART optional
- USB range configuration
- 1.5 kV isolation
Nationwide delivery · Free technical advice
InputPt100 · TC J/K/T/N · mV · Ω
Output4–20 mA (2-wire) · HART (opt.)
Accuracy±0.1 °C (Pt100)
Response time< 1 s
Overview
The TT-420 converts the sensor's resistance or voltage into a linear 4–20 mA signal that travels long distances without cable error. Sensor type and range are set over USB, and galvanic isolation protects the loop.
Technical specifications
General
- Input
- Pt100 · TC J/K/T/N · mV · Ω
- Output
- 4–20 mA (2-wire) · HART (opt.)
- Accuracy
- ±0.1 °C (Pt100)
- Response time
- < 1 s
Electrical
- Supply
- 8 – 35 V DC (loop)
- Isolation
- 1.5 kV
- Protection
- IP20 (head)
Mechanical
- Dimensions (mm)
- Ø44 × 20
- Ambient temperature
- −40 … +85 °C
Applications
Temperature to PLC/DCS
Large process lines
Outdoor equipment
Direct replacement of legacy sensors
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