HEL-700 Thin Film Platinum RTDs (Resistance Temperature Detectors) provide excellent linearity, accuracy, stability and interchangeability. Resistance changes linearly with temperature. Laser trimming provides ±0.3°C interchangeability at 25°C. 1000, 375 alpha provides 10X greater sensitivity and signal-to-noise. Both 1000 and 100 provide interchangeabilities of ±0.6°C or better from -100°C to 100C, and ±3.0°C at 500°C.
The HEL-700 series are thin‑film platinum resistance temperature detectors offering linear resistance versus temperature, high accuracy, and excellent stability. They are available in 1000 V and 100 V versions with multiple packaging options such as ribbon lead, radial chip, and SMT axial.
The document lists detailed specifications including temperature range, accuracy, time constants, and recommended operating currents, as well as ordering guides for various lead‑wire configurations and optional NIST calibrations.
| Sensor Type | Thin film platinum RTD |
|---|---|
| Base Resistance (1000 V) | 1000 V @ 0 °C |
| Alpha (1000 V) | 0.00375 V/V/°C |
| Temperature Range (Teflon leads) | -200 °C to +260 °C |
| Temperature Accuracy (standard) | ±0.5 °C or 0.8 % of temperature |
| Time Constant (water) | <0.5 s |
| Operating Current | 2 mA max (1 mA recommended) |
| Insulation Resistance | >50 MΩ at 50 VDC @ 25 °C |
| Lead Material | Nickel‑coated stranded copper, Teflon or Fiberglass insulated |
The HEL-700 RTD with Teflon leads operates from –200 °C to +260 °C.
The standard HEL-700 RTD provides a temperature accuracy of ±0.5 °C or 0.8 % of temperature.
Because the component is sensitive to electrostatic discharge, normal ESD precautions should be taken when handling it.
A maximum of 2 mA is allowed, but 1 mA is recommended to keep self‑heating errors below 1 °C.