Product Overview
The Honeywell HEL-700 Series Thin Film Platinum RTDs (Resistance Temperature Detectors) are engineered for precise temperature monitoring and control in demanding industrial applications. These sensors offer a linear relationship between resistance and temperature, delivering high accuracy, stability, and a wide operating temperature range within a compact, fast-response package. Designed for seamless integration, the fully assembled elements eliminate the need for fragile splices, ready for use in probe assemblies. Manufactured with a thin platinum layer on an alumina substrate and laser-trimmed for interchangeability, they are available with standard 0.2% or optional 0.1% accuracy. The robust construction, featuring a ceramic case and either TFE Teflon or fiberglass-insulated lead wires, ensures reliability across diverse environments.
Product Attributes
- Brand: Honeywell
- Series: HEL-700
- Sensor Type: Thin Film Platinum RTD
- Substrate Material: Alumina
- Leadwire Insulation: TFE Teflon or Fiberglass
- Case Material: Ceramic
- Construction: Fully assembled, ready-to-use elements
Technical Specifications
| Characteristic | Condition | Parameter | Details |
|---|---|---|---|
| Alpha (Temperature Coefficient of Resistance) | R0 = 100 | 0 C | 0.00385 //C (DIN Standard) |
| Alpha (Temperature Coefficient of Resistance) | R0 = 1000 | 0 C | 0.00375 //C |
| Temperature Range | TFE Teflon insulated | -70 C to 260 C [-94 F to 500 F] | |
| Temperature Range | Fiberglass insulated | -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 | |
| Temperature Accuracy | 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 |
| Base Resistance and Interchangeability (R0 R0) | 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 |
| Time Constant | 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 | Leadwires (Teflon) | Nickel-coated stranded copper, epoxy potting | |
| Construction Material | Leadwires (Fiberglass) | Nickel-coated stranded copper, ceramic potting | |
| Models | Leadwire Insulation & Gauge | Resistance & Alpha | Configuration |
| HEL-705 | TFE Teflon, 28 gauge; 2-wire | 1000 : 0.00375 //C; 100 : 0.00385 //C | 2-wire |
| HEL-707 | Fiberglass, 28 gauge; 2-wire | 1000 : 0.00375 //C; 100 : 0.00385 //C | 2-wire |
| HEL-711 | TFE Teflon, 28 gauge; 2-wire | 1000 : 0.00375 //C; 100 : 0.00385 //C | 3-wire |
| HEL-712 | Fiberglass, 28 gauge; 2-wire | 1000 : 0.00375 //C; 100 : 0.00385 //C | 3-wire |
| HEL-716 | TFE Teflon, 24 gauge; 2-wire | 1000 : 0.00375 //C; 100 : 0.00385 //C | 3-wire |
| HEL-717 | Fiberglass, 24 gauge; 2-wire | 1000 : 0.00375 //C; 100 : 0.00385 //C | 3-wire |
| Leadwire Length | Standard 12 inches (305 mm) | ||
| NIST Calibration | Optional (C1, C2, C3 for various temperature points) |
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
- Autoclaves (Medical)
- Aircraft (Aerospace/Defense)
- Space vehicles (Aerospace/Defense)
2403111643_Honeywell-HEL-712-T-1-12-00_C17571667.pdf
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