Product Overview
The Honeywell HEL-700 Series Thin Film Platinum RTDs are designed for precise temperature monitoring and control in demanding industrial applications. These Resistance Temperature Detectors offer a linear relationship between resistance and temperature, ensuring high linearity, stability, accuracy, and a wide operating temperature range within a compact, fast-response package. Engineered for reliability, they are fully assembled and ready for use in probe assemblies, eliminating the need for fragile splices. Manufactured with a thin platinum layer on an alumina substrate and laser-trimmed for exceptional interchangeability, the HEL-700 Series provides dependable performance across diverse environments.
Product Attributes
- Brand: Honeywell
- Series: HEL-700
- Sensing Element: Thin Film Platinum
- Substrate Material: Alumina
- Leadwire Insulation: TFE Teflon or Fiberglass
- Leadwire Material: Nickel-coated stranded copper
- Potting/Firing: Epoxy potting (Teflon leads) or Ceramic fired (Fiberglass leads)
- Package: Cylindrical 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 insulated leads | -70 C to 260 C [-94 F to 500 F] | |
| Temperature Range | Fiberglass insulated leads | -75 C to 540 C [-100 F to 1000 F] | |
| Temperature Accuracy | R0 0.2% trim (standard) | 0.5 C or 0.8% of temperature, whichever is greater | |
| Temperature Accuracy | R0 0.1% trim (optional) | 0.3 C or 0.6% of temperature, whichever is greater | |
| Base Resistance (R0) & Interchangeability (R0) | R0 0.2% trim (standard) | 0 C, 1000 | 2 |
| Base Resistance (R0) & Interchangeability (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 | Max. | 2 mA | |
| 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 | Case | High purity alumina | |
| Construction | Leadwire Insulation | Teflon-insulated leads | Nickel-coated stranded copper, epoxy potting |
| Construction | Leadwire Insulation | Fiberglass-insulated leads | Nickel-coated stranded copper, ceramic potting |
| Functional Behavior Formula | RT = R0(1 + AT + BT - 100CT + CT) | ||
| Model Example | Part Number | Configuration | HEL-705-U-0-12-C1 |
| Model Example Description | HEL-700 Series RTD, 2x 28 AWG TFE Teflon leads, 0.00375 , 0.2% trim, 12-inch leadwires, NIST calibration at 0 C. |
Note: The information presented in this product sheet is for reference only. Consult the product instructions supplied with each unit for complete installation, operation, and maintenance details.
2403111623_Honeywell-HEL-705-U-0-24-00_C17419152.pdf
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