HEL-775-A/B FILMED PLATINUM RESISTANCE TEMPERATURE SENSOR is a high quality sensor with resistance value interchangeable, accuracy, linearity, fast, laser corrected, solderable SIP package, ceramic substrate and so on.
The HEL-775 is a thin‑film platinum RTD temperature sensor supplied in a solder‑able SIP package with a ceramic base and epoxy seal. Two variants are available (A and B) with slightly different power ratings.
Key features include a wide measurement range of –55 °C to 150 °C, accuracy better than ±0.5 °C (or 0.8 % of reading), 1000 Ω nominal resistance at 0 °C, 0.15 % linearity over the full range, 10‑second time constant in air, and a maximum operating current of 1 mA. This manual is written in Chinese.
| Sensor type | Thin‑film platinum RTD |
|---|---|
| Temperature range | -55 °C to 150 °C |
| Accuracy | Better than ±0.5 °C or 0.8 % of reading |
| Basic resistance | 1000 Ω ±0.2 % @0 °C |
| Linearity | 0.15 % over full range |
| Time constant | 10 s in air |
| Maximum operating current | 1 mA |
| Insulation resistance | >50 MΩ @50 VDC, 25 °C |
| Housing material | Ceramic base with epoxy seal |
| Lead material | Phosphor bronze plated tin, 60/40 coating |
| Pin configuration | 2‑wire |
| Power rating (HEL-775‑A) | 9.7 mW @10 s in air |
| Power rating (HEL-775‑B) | 6.8 mW @10 s in air |
It measures temperatures from –55 °C up to 150 °C.
The sensor’s accuracy is better than ±0.5 °C or 0.8 % of the current temperature reading.
The maximum operating current is 1 mA.
The insulation resistance is greater than 50 MΩ at 50 VDC and 25 °C.