Product Overview
The Honeywell HEL-700 Series Thin Film Platinum RTDs are designed for critical temperature monitoring and control in industrial applications. These sensors offer a linear change in resistance versus temperature, delivering high linearity, stability, accuracy, and a wide temperature range in a compact, fast-response package. They are ideal for measuring temperatures from -75 C to 540 C [-100 F to 1000 F]. The fully-assembled, ready-to-use elements eliminate the need for fragile splices to extension leads. Manufactured with a thin layer of platinum on an alumina substrate, they are laser-trimmed for precise interchangeability. The sensor chip is then glassed, wired, and potted or ceramic fired into a cylindrical alumina package with either TFE Teflon or fiberglass-insulated lead wires.
Product Attributes
- Brand: Honeywell
- Product Series: HEL-700 Series
- Sensing Technology: Thin Film Platinum RTD (Resistance Temperature Detector)
- Substrate Material: Alumina
- Leadwire Insulation Options: TFE Teflon, Fiberglass
- Case Material: Ceramic (Alumina)
Technical Specifications
| Characteristic | Condition | Parameter | Value |
|---|---|---|---|
| Alpha (R0 = 100 ) | 0 C | 0.00385 //C | |
| Alpha (R0 = 1000 ) | 0 C | 0.00375 //C | |
| Temperature Range | TFE Teflon | -70 C to 260 C [-94 F to 500 F] | |
| Fiberglass | -75 C to 540 C [-100 F to 1000 F] | ||
| Temperature Accuracy (Standard Trim 0.2%) | R0 0.2% trim | 0.5 C or 0.8% of temperature, whichever is greater | |
| R0 0.2% trim | 0.2% (2 for 1000 RTD at 0 C) | ||
| Temperature Accuracy (Optional Trim 0.1%) | R0 0.1% trim | 0.3 C or 0.6% of temperature, whichever is greater | |
| R0 0.1% trim | 0.1% (1 for 1000 RTD at 0 C) | ||
| Linearity | -40 C to 125 C | 0.1% of full scale | |
| Linearity | -75 C to 540 C | 2.0% of full scale | |
| Time Constant | Water at 3 ft/s | 0.086 in O.D. | <0.5 s |
| Still water | 0.086 in O.D. | <1.0 s | |
| Operating Current | 2 mA max. (1 mA recommended for minimal self-heating) | ||
| Stability | Occupied environments | <0.25 C /year; 0.05 C /5 years | |
| Self Heating | 0.086 in O.D. | <15 mW/C typ. | |
| Insulation Resistance | 50 Vdc at 25 C | >50 M | |
| Construction/Material | Case | High purity alumina | |
| Construction/Material | Teflon-insulated leads | Nickel-coated stranded copper, epoxy potting | |
| Construction/Material | Fiberglass-insulated leads | Nickel-coated stranded copper, ceramic potting | |
| Leadwire Gauge and Type | HEL-705 | TFE Teflon, 28 gauge; 2-wire | |
| Leadwire Gauge and Type | HEL-707 | Fiberglass, 28 gauge; 2-wire | |
| Leadwire Gauge and Type | HEL-711 | TFE Teflon, 28 gauge; 3-wire | |
| Leadwire Gauge and Type | HEL-712 | Fiberglass, 28 gauge; 3-wire | |
| Leadwire Gauge and Type | HEL-716 | TFE Teflon, 24 gauge; 3-wire | |
| Leadwire Gauge and Type | HEL-717 | Fiberglass, 24 gauge; 3-wire | |
| Leadwire Length | Standard: 12 inches (305 mm); Other lengths available | ||
| NIST Calibration | Options | C1 (at 0 C), C2 (at 0 C and 100 C), C3 (at 0 C, 100 C and 260 C) | |
| Dimensional Drawing | HEL-705, HEL-707 | 0.086 in [2.29 mm] diameter, 0.187 in [4.83 mm] diameter | |
| Dimensional Drawing | HEL-711, HEL-712 | 0.086 in [2.29 mm] diameter, 0.25 in [6.35 mm] diameter | |
| Dimensional Drawing | HEL-716, HEL-717 | 0.11 in [2.79 mm] diameter, 0.13 in [3.30 mm] diameter |
Potential Applications
- Industrial: HVAC equipment, Instrument and probe assemblies, Process control, Motor windings and bearings, Battery packs, Environmental chambers, Ovens and kilns, Drill holes in large objects
- Medical: Autoclaves
- Aerospace/Defense: Aircraft, Space vehicles
2410311718_Honeywell-HEL-705-U-0-18-00_C17423521.pdf
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