Honeywell Commercial Switch&Sensor Film Platinum Resistor HEL-775-A/HEL-775-B datasheet
The HEL-775 is a thin‑film platinum RTD temperature sensor with a measurement range of –55 °C to 150 °C. It offers high accuracy, better than ±0.5 °C or 0.8 % of the reading (whichever is larger), and a basic resistance of 1000 Ω ± 0.2 % at 0 °C.
The sensor is supplied in a solder‑able SIP package with two leads spaced 0.100 in apart. It features low self‑heating (max 1 mA, <0.3 °C in still air), high insulation resistance (>50 MΩ at 50 VDC, 25 °C), and stable performance (<0.05 °C drift over five years). Mounting dimensions are provided for reference. This manual is written in Chinese.
| Sensor type | Thin‑film platinum RTD |
|---|---|
| Temperature range | -55 °C to 150 °C |
| Accuracy | ±0.5 °C or 0.8 % of reading (whichever larger) |
| Basic resistance | 1000 Ω ± 0.2 % at 0 °C |
| Linearity | ±0.15 % over full range |
| Time constant | 10 s in still air |
| Power consumption (self‑heat) | Max 1 mA, <0.3 °C self‑heat in still air |
| Stability | <0.05 °C drift over 5 years |
| Insulation resistance | >50 MΩ @ 50 VDC (25 °C) |
| Package | SIP, 2‑lead, 0.100 in lead spacing |
The HEL-775 operates from –55 °C up to 150 °C.
Its accuracy is better than ±0.5 °C or 0.8 % of the reading, whichever is larger.
At a maximum current of 1 mA the sensor self‑heats less than 0.3 °C in still air.