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Emerson Rosemount 6R8HCI-58-C Platinum Resistance Temperature Sensor (RST) PDF
6R8HCI-58-C is a combined model of Emerson Rosemount 68 Series Single-Element Platinum RTD Temperature Sensor and 58C Series Cut-to-Fit Sheath. It is specially designed for industrial process temperature measurement, adopting a Pt100 thin-film element with multiple mounting options. Suitable for the temperature range of -58°F to 392°F (-50°C to 200°C).
- Model Segment Definition
| Segmento | Senso | Descrizione dettagliata |
| 6 | Sensor Series | 68 Series single-element RTD (6 = single-element; 8 = thin-film type) |
| R8 | Resistenza & Classe di precisione | R = 100Ω (Pt100); 8 = Class B accuracy (±0.3°C @ 0°C) |
| H | Sheath Material | H = 316 Stainless Steel (Standard SST), corrosion-resistant for most industrial environments |
| C | Connection Head Type | C = Polypropylene connection head, excellent insulation and chemical corrosion resistance |
| IO | Lead Configuration | I = 3-wire system, effectively compensates lead wire resistance and improves measurement accuracy |
| -58 | Intervallo di temperatura | -58°F to 392°F (-50°C to 200°C), matched with 58C series sheath |
| -C | Sheath Series | 58C Series Cut-to-Fit sheath; length can be trimmed with standard pipe cutters on site |
- Parametri delle specifiche principali
| Categoria dei parametri | Technical Index | Osservazioni |
| Basic Characteristics | ||
| Tipo di prodotto | Single-element Platinum Resistance Temperature Sensor (RST) | 68 Series thin-film type, 58C Series cut-to-fit sheath |
| Marca | Emerson Rosemount | Benchmark brand in industrial process measurement |
| Resistance Element | Pt100 (100Ω @ 0°C) thin-film type | Fast response and high long-term stability |
| Classe di precisione | Classe B (CEI 60751) | ±0.3°C @ 0°C, ±0.004°C/°C above 0°C |
| Intervallo di temperatura | -58°F to 392°F (-50°C to 200°C) | Temperature limit of 58C series sheath |
| Specifiche elettriche | ||
| Lead Configuration | 3-filo | Eliminates lead resistance influence and improves measuring accuracy |
| Lead Material | PTFE insulated, silver-plated copper, 24AWG stranded wire | Temperature resistant, chemical resistant and high conductivity |
| Insulation Resistance | ≥1000MΩ @ 500Vdc (room temperature) | Ensures integrity of measurement signal |
| Tempo di risposta | 12 secondi (63.2% response in 3ft/s water flow) | Fast response for thin-film element |
| Physical Specifications | ||
| Sheath Material | 316 Stainless Steel | High corrosion resistance and mechanical strength |
| Sheath Diameter | 0.25 pollice (6.35mm) | Standard size, compatible with most thermowells |
| Sheath Length | Standard lengths: 12″, 24″, 36″, 48″ | Trimmable to any length, no need to stock multiple sizes |
| Connection Head Material | Polypropylene | Superior insulation and chemical resistance |
| Terminal Design | 6-terminal configuration | Easy wiring and compatible with various transmitters |
| Condizioni ambientali | ||
| Temperatura operativa | -58°F to 392°F (-50°C to 200°C) | Limited by 58C sheath temperature rating |
| Humidity Resistance | 100% umidità relativa | Lead sealing withstands high-humidity environments |
| Resistenza alle vibrazioni | ±0.05% maximum ice-point resistance drift | Compliant with industrial vibration requirements |
| Protezione dall'ingresso | IP65 | Connection head protected against dust and water intrusion |
| Certificazioni & Standard | ||
| Main Standards | CEI 60751, ANSI MC96.1 | Globally recognized temperature sensor standards |
| Certification Marks | CE, UL, CSA | Compliant with international safety regulations |
- Elenco degli accessori & Mounting Parts
| Part Name | Specifica | Funzione | Scenario applicativo |
| 58C Sheath | Cut-to-fit stainless steel sheath | Protects sensor element and provides mechanical support | General industrial process temperature measurement |
| Polypropylene Connection Head | Insulated type | Provides electrical connection and environmental protection | Ambienti corrosivi & high insulation requirements |
| 3-Wire Lead Assembly | PTFE insulated silver-plated copper wire | Transmits temperature signal with 3-wire resistance compensation | High-precision temperature measurement |
| Heat Shrink Tubing | Insulation protective sleeve | Seals and protects lead-to-sensor joint | On-site installation for enhanced tightness |
| Installation Manual | Operation guideline | Detailed installation procedures and precautions | Field installation guidance |
| Temperature Calibration Certificate | Calibration report | Provides sensor accuracy and calibration data | Quality traceability and ISO compliance |
| Mounting Fittings | Compression fitting / Spring-loaded fitting | Fixes sensor inside thermowell | Adapt to different mounting methods |
- Concorrente & Cross-Brand Equivalent Models
| Marca | Modello sostitutivo | Similar Features | Differenze |
| ABB | TSP400-100-B-3-0.25 | Pt100, Classe B, 3-filo, 0.25″ sheath | Different head material, slightly lower price |
| Siemens | 7NG3211-0NN00 | Pt100, Classe B, 3-filo, stainless steel sheath | Slightly slower response time (~15s) |
| Yokogawa | TR10-100B-3-025 | Pt100, Classe B, 3-filo, 0.25″ sheath | Same temperature range, slightly higher calibration accuracy |
| Rosemount Internal Alternative | 7R8HCI-58-C | Pt100, Class A, 3-filo, 316SST sheath | Class A accuracy (±0.15°C @ 0°C), costo più elevato |
| Rosemount Internal Alternative | 6R8HPI-58-C | Pt100, Classe B, 3-filo, Hastelloy sheath | Stronger corrosion resistance for harsh chemical environments |
- Linee guida per la selezione & Soluzioni sostitutive
5.1 Parametri di selezione chiave
| Parametro | Punti chiave della selezione | Recommended Specification |
| Classe di precisione | Select according to measurement requirements; Class B for most industrial applications | Classe B (±0.3°C); High-precision use Class A (±0.15°C) |
| Lead Configuration | 3-wire compensates lead resistance; 4-wire for highest accuracy | 3-filo (standard); 4-wire for laboratory & misurazione di precisione |
| Sheath Material | 316SST for general environments; Hastelloy for heavy corrosion | 316SST (standard); Hastelloy for chemical industry |
| Connection Head Material | Polypropylene for insulation; Aluminum for heat dissipation; Stainless steel for corrosion resistance | Polypropylene for corrosive sites; Aluminum for high-temperature sites |
| Intervallo di temperatura | 58C Series: -50°C～200°C; 68 Standard Series: -50°C～400°C | 58C for general industry; 68 standard sheath for high temperature |
| Sheath Length | 58C cut-to-fit design, no need for multiple inventory lengths | Choose standard length by insertion depth (12″/24″/36″/48″) |
5.2 Raccomandazioni per la sostituzione
Insufficient temperature range: Adopt 68 standard sheath model 6R8HCI-68, range extended to -50°C～400°C
Higher accuracy required: Select 7R8HCI-58-C (Class A accuracy, ±0.15°C @ 0°C)
Severe corrosion environment: Use 6R8HPI-58-C (Hastelloy) or 6R8HCI-58-T (Titanium) sheath
Faster response required: Choose 68Q fast-response series, response time reduced to 5 secondi
4-wire measurement needed: Select 6R8HCW-58-C to eliminate all lead resistance error
5.3 Application Precautions
- Trim the 58C sheath to required length with a standard pipe cutter before installation; reserve sufficient length for connection head assembly.
- Keep three lead wires equal in length for optimal resistance compensation in 3-wire connection.
- Avoid long-term operation above 392°F (200°C), exceeding the 58C sheath temperature limit.
- Ensure full contact between sensor tip and thermowell bottom during installation to minimize measurement error.
- Regularly inspect connection head sealing to prevent moisture ingress and accuracy drift.
- When matched with temperature transmitters (per esempio. Rosemount 3144S), correctly configure sensor type and parameters in the transmitter.
- Scenari applicativi tipici
Chemical process temperature measurement (corrosive environments; polypropylene head provides reliable insulation)
Cibo & beverage industry (316 stainless steel complies with sanitary standards; cut-to-fit length adapts to various equipment)
Water treatment systems (chlorine corrosion resistance; 3-wire design ensures stable accuracy)
Sistemi HVAC (matched temperature range and flexible installation)
Pharmaceutical industry (high-precision measurement compliant with GMP requirements)
Power industry (trasformatore & generator winding temperature monitoring; 3-wire compensates cable resistance)
Olio & gas industry (pipeline and storage tank temperature measurement with corrosion-resistant sheath)
