The Cole-Parmer Industrial Bimetal Thermometer, 5 in Dial, 4 in Stem, 0-250°F (90590-51) is a back-connect process thermometer with dual °F/°C scales covering 0 to 250°F (-20 to 120°C). It combines ±1% full-scale accuracy, a 304 stainless steel case and stem, a 1/2 in NPT(M) connection and NEMA 4X/IP66 protection for demanding temperature measurement applications.
Key Features
- Dual 0 to 250°F and -20 to 120°C scales, allowing Fahrenheit and Celsius temperatures to be read from the same dial
- ±1% full-scale accuracy, conforming to ASME B40.3 Grade A performance requirements
- Large 5 in anti-parallax dial, with a dished design that improves readability and helps reduce viewing-angle errors
- 2°F and 2°C scale divisions, providing clearly defined increments across both temperature scales
- 4 in long stainless steel stem, with a 0.25 in diameter and 304 stainless steel construction
- 1/2 in NPT(M) back connection, providing the specified rear-mounted process connection for this configuration
- Hermetically sealed case, helping prevent dial fogging, moisture entry, internal corrosion and coil freeze-up
- NEMA 4X/IP66 environmental protection, supporting installation in demanding industrial environments
- All-welded 304 stainless steel construction, combining a stainless steel case and stem with a glass window
- External reset screw, allowing recalibration of the thermometer when required
- Specified immersion for rated accuracy, requiring 2 in stem immersion in liquids or 4 in immersion in gases
- -40 to 200°F (-40 to 93°C) ambient limits, defining the permitted surrounding temperature range
- 100% of span maximum overtemperature for this 250°F maximum-temperature model
Benefits
- Allows operators to read Fahrenheit and Celsius simultaneously without converting between units.
- Improves dial readability through the large anti-parallax face and clearly defined scale divisions.
- Supports demanding process environments with a sealed stainless steel enclosure and NEMA 4X/IP66 protection.
- Provides a defined ±1% full-scale accuracy when the specified stem immersion conditions are followed.
- Allows field recalibration through the accessible external reset mechanism.
- Provides a robust threaded back connection for compatible process installations.
Why Choose the Cole-Parmer Industrial Bimetal Thermometer, 5 in Dial, 4 in Stem, 0-250°F (90590-51)?
The Cole-Parmer 90590-51 combines a large dual-scale dial, ±1% full-scale accuracy, stainless steel construction and NEMA 4X/IP66 protection in a back-connect industrial thermometer. Its 4 in stem and 1/2 in NPT(M) connection provide a defined configuration for compatible process installations, with supply and product support available from John Morris Group in Australia.
