Honeywell HEL-700 Series Thin Film Platinum RTDs
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, providing high linearity, stability, accuracy, and a wide operating temperature range within a compact, fast-response package. They are ideal for applications requiring precise temperature measurement 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 deposited on an alumina substrate and laser-trimmed, these RTDs are available with standard 0.2% or optional 0.1% interchangeability.
Product Attributes
- Brand: Honeywell
- Series: HEL-700
- Sensing Element: Thin Film Platinum
- Substrate Material: Alumina
- Leadwire Insulation: TFE Teflon or Fiberglass
- Construction: Ceramic case, glassed, wired, and potted or ceramic fired
Technical Specifications
| Characteristic | Condition | Parameter | Details |
|---|---|---|---|
| Alpha | R0 = 100 | 0 C | 0.00385 //C |
| R0 = 1000 | 0 C | 0.00375 //C | |
| Temperature Range | TFE Teflon insulated leadwires | -70 C to 260 C [-94 F to 500 F] | |
| Fiberglass insulated leadwires | -75 C to 540 C [-100 F to 1000 F] | ||
| Temperature Accuracy | R0 0.2% trim (standard) | 0.5C or 0.8% of temperature, whichever is greater | |
| R0 0.1% trim (optional) | 0.3C or 0.6% of temperature, whichever is greater | ||
| Base Resistance and Interchangeability (R0 R0) | R0 0.2% trim (standard) | 0 C | 1000 2 |
| R0 0.1% trim (optional) | 0 C | 1000 1 | |
| 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 |
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
2403111644_Honeywell-HEL-705-U-1-24-00_C17576407.pdf
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