Honeywell Commercial Switch&Sensor Film Platinum Resistance Thermometer is a resistance-value interchangeable, accurate, linear, fast, laser-corrected, solderable SIP package, ceramic-based temperature sensor.
The HEL-775 series are thin‑film platinum RTD (RTD) temperature sensors offered in two variants, A and B. They feature interchangeable resistance values, high accuracy, linear response, fast response time, laser‑trimmed correction, solder‑able SIP packaging, and a ceramic substrate.
Performance specifications include a temperature range of -55 °C to 150 °C, accuracy better than ±0.5 °C (0.8 % of reading) for the A version and ±0.3 °C (0.6 % of reading) for the B version, resistance of 1000 Ω (A) or 100 Ω (B) at 0 °C with tight tolerance, low self‑heat (<0.3 °C), and high insulation resistance (>50 MΩ at 25 °C). The sensors are supplied in a solderable SIP package with 0.100 in lead spacing. This manual is written in Chinese.
| Sensor type | Thin‑film platinum RTD |
|---|---|
| Temperature range | -55 °C to 150 °C |
| Accuracy (HEL-775-A) | ±0.5 °C or 0.8 % of reading |
| Accuracy (HEL-775-B) | ±0.3 °C or 0.6 % of reading |
| Resistance at 0 °C (HEL-775-A) | 1000 Ω ± 2 Ω (±0.2 %) |
| Resistance at 0 °C (HEL-775-B) | 100 Ω ± 0.2 Ω (±0.2 %) |
| Alpha coefficient (HEL-775-A) | 0.00375 Ω/Ω/°C |
| Alpha coefficient (HEL-775-B) | 0.00385 Ω/Ω/°C |
| Power dissipation (10 ft/s air) | 9.7 mW/°C |
| Insulation resistance | >50 MΩ @ 25 °C |
| Package | Solderable SIP, 0.100 in lead spacing |
The HEL-775 sensors operate from -55 °C up to 150 °C.
The HEL-775-A provides accuracy better than ±0.5 °C or 0.8 % of the reading (laser‑trimmed ±0.2 %).
The HEL-775-B has a resistance of 100 Ω ± 0.2 Ω (±0.2 %) at 0 °C.
They are supplied in a solderable SIP package with 0.100 in lead spacing.