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Ashcroft bi-metallic dial thermometer, stainless steel case, glass lens, rubberised back, 5 inch face

Ashcroft

Ashcroft 50EI60R dial thermometer 50-550 °F bi-metallic 1/4 in

SKU CH-4DEC-T8P33

Bi-metallic dial thermometer measuring 50 °F to 550 °F with a 4 in stem, 5 in dial, 1/2 in NPT back connection and 304 stainless steel housing

  • Product typeEnvironmental & Mechanical
  • Wide temperature span covers 50 °F to 550 °F
  • NIST-traceable certificate validates accuracy out of the box
  • 304 stainless-steel housing resists corrosion in harsh settings
  • Glass lens protects dial from impact and scratches
  • Bi-metallic sensing delivers reliable mechanical temperature readings

Ashcroft 50EI60R bi-metallic thermometer

This Ashcroft 50EI60R dial thermometer uses a bi-metallic sensing element to display temperature across a 50 to 550 °F range. The five-inch glass lens sits on a 304 stainless steel housing with a four-inch stem. It is built for industrial process monitoring where a rugged, direct-reading instrument is required.

Check stem length and thread before ordering

Verify that the four-inch stem reaches the measurement point inside your vessel or pipe. Confirm the 1/2 inch NPT back connection matches the existing fitting on your equipment. The unit ships without a NIST-traceable certificate, so arrange calibration separately if your quality system requires documented traceability.

304 stainless housing with glass lens

The 304 stainless steel case resists corrosion in harsh plant environments while the glass lens protects the dial from dust and splashes. A rear 1/2 inch NPT mount positions the dial upright for easy reading at eye level. The bi-metallic mechanism needs no power, so the gauge remains functional during electrical outages.

How it compares

Measured against everything we stock in Meters, Testers & Measuring Tools, at today’s prices. Recalculated every night.

Price $57.99
Typical for this category: the median of 3,030 items is $54.99.

Specifications

Product
Brand nameASHCROFT
Product typeEnvironmental & Mechanical

Questions about this item

Does the thermometer arrive with a calibration certificate and is any mounting hardware required separately?

The unit includes a NIST-traceable certificate; it mounts via the 1/2 in NPT back connection so a matching fitting must be supplied by the installer.

Should I choose the Fahrenheit or Celsius scale for a 50 to 550 °F range?

The dial shows both scales simultaneously — 50 to 550 °F and 10 to 290 °C — so no separate version selection is needed.

How accurate is the 50-550 °F reading once the stem is installed in a pipe?

The bi-metallic element in 304 stainless steel with a glass lens provides direct-reading indication across the full 50 to 550 °F range when the 4 in stem is immersed in the process.

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