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Watlow
Watlow Rigid Sheath Thermocouple with Threaded Fitting
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Rigid sheath TC with threaded fitting; J/K/T/E; to 900 °F. RFQ + selection help.
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Key parameters
Measuring range
Fiberglass-insulated continuous to 900 °F (480 °C); PFA wire typically to 500 °F (260 °C)
Accuracy
Standard ASTM E230 thermocouple tolerances (depends on type and temperature)
Process connection
Threaded fitting on rigid sheath (Style 23 ~1/8 NPT; Style 24 larger NPT per catalog)
Wetted parts
Stainless steel sheaths; optional PFA-coated sheath for corrosive service
Ambient temperature
Depends on lead insulation (fiberglass to 480 °C continuous capability at hot end)
Approvals
ASTM E230
Fits process immersion sensing where you need a Watlow rigid sheath thermocouple with an integral threaded fitting (Styles 23/24) for accurate placement without separate compression fittings.
Key advantages
- Style — Rigid sheath with threaded fitting (Styles 23/24)
- Types — J, K, T, E; grounded, ungrounded, or exposed
- Temperature — Fiberglass to 900 °F (480 °C); PFA to ~500 °F (260 °C)
- Sheath — 1/8 and 3/16 in; 300-series SS; straight/45°/90°
- Mounting — Threaded process fitting (~1/8 NPT Style 23; larger NPT Style 24)
Typical applications
- Immersion / bulkhead process placement.
- Food, plating, ovens, pipe tracing.
- Heat treating and medical equipment.
Selection guide
- Style — 23 vs 24 NPT size
- Calibration / junction — J/K/T/E
- OD / bend / length — Sheath geometry
- Leads — Insulation and length
Common mistakes
- Wrong NPT size vs process port.
- PFA leads above rating.
- Exposed junction in corrosive service without PFA coat.
When to RFQ / what to tell us
- Style/NPT, type, OD, bend, leads.
- Quantity and ship-to.
Request a Quote · Get selection help
Specs
| Spec | Value |
|---|---|
| SKU | 22589 |
| Brand | Watlow |
| Model | Rigid Sheath Thermocouple with Threaded Fitting |
| Product type | Thermocouple |
| Style | Rigid sheath with threaded fitting (Styles 23/24); accurate placement in process applications |
| Measuring range | Fiberglass-insulated continuous to 900 °F (480 °C); PFA wire typically to 500 °F (260 °C) |
| Sensor type | Thermocouple types J, K, T, E; grounded, ungrounded, or exposed junctions |
| Sheath | 1/8 and 3/16 in diameter rigid sheath; 300-series stainless tubing; straight / 45° / 90° bend options |
| Process connection | Threaded fitting on rigid sheath (Style 23 ~1/8 NPT; Style 24 larger NPT per catalog) |
| Accuracy | Standard ASTM E230 thermocouple tolerances (depends on type and temperature) |
| Wetted materials | Stainless steel sheaths; optional PFA-coated sheath for corrosive service |
| Lead wire | SERV-RITE fiberglass or high-temp resin; SS braid or flexible armor optional; leads 6–360 in |
| Mounting | Threaded process fitting on rigid sheath for immersion / bulkhead placement |
| Features | Threaded fitting for process mounting; 32 standard sheath lengths; ASTM E230 color coding |
| Applications | Food processing, plating baths, ovens, pipe tracing, medical equipment, industrial heat treating |
Documents
FAQ
Q: What is Style 23/24? A: Rigid sheath thermocouples with integral threaded fittings.
Q: Max temperature? A: Fiberglass to 900 °F (480 °C) continuous.
Q: What should I send for a quote? A: NPT/type/OD/leads, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Measuring range | Fiberglass-insulated continuous to 900 °F (480 °C); PFA wire typically to 500 °F (260 °C) |
| Accuracy | Standard ASTM E230 thermocouple tolerances (depends on type and temperature) |
| Process connection | Threaded fitting on rigid sheath (Style 23 ~1/8 NPT; Style 24 larger NPT per catalog) |
| Wetted parts | Stainless steel sheaths; optional PFA-coated sheath for corrosive service |
| Ambient temperature | Depends on lead insulation (fiberglass to 480 °C continuous capability at hot end) |
| Approvals | ASTM E230 |
| Mounting | Threaded process fitting on rigid sheath for immersion / bulkhead placement |
| Sensor type | Thermocouple types J, K, T, E; grounded, ungrounded, or exposed junctions |
| Style | Rigid sheath with threaded fitting (Styles 23/24); accurate placement in process applications |
| Sheath | 1/8 and 3/16 in diameter rigid sheath; 300-series stainless tubing; straight / 45° / 90° bend options |
| Lead Wire | SERV-RITE fiberglass or high-temp resin; SS braid or flexible armor optional; leads 6–360 in |
| Cold End | Epoxy-sealed cold ends available for moisture/fume resistance |
| Special Features | Threaded fitting for process mounting; 32 standard sheath lengths; ASTM E230 color coding |
| Applications | Food processing, plating baths, ovens, pipe tracing, medical equipment, industrial heat treating |