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Stainless steel dial thermometer with glass lens, three inch face, four inch stem, back connection

Ashcroft

Ashcroft 30EI60R Dial Thermometer 50–550°F 4in Stem 3in Dial 1/2 NPT Back

SKU CH-QS49-1JQRN

Measures temperature from 50 to 550 degrees F with a 4 inch stem, 3 inch dial and 1/2 NPT back connection

  • TypeEnvironmental & Mechanical
  • Wide 50–550 °F range covers high-heat applications
  • Dual-scale dial shows 10–290 °C for metric readings
  • 304 stainless-steel housing resists corrosion in harsh environments
  • Glass lens protects dial from impact and chemicals
  • 1/2 in NPT back connection enables direct tank mounting

Precision Temperature Monitoring

The Ashcroft 30EI60R dial thermometer provides direct temperature readings from 50 to 550 degrees Fahrenheit and 10 to 290 degrees Celsius. Its 4-inch stem inserts into the process while the 3-inch dial displays the measurement clearly. A 1/2 inch NPT back connection secures the instrument in piping or vessel fittings. The 304 stainless steel housing and glass lens withstand demanding industrial environments.

Industrial Process Installations

This thermometer suits plant engineers and maintenance technicians who need a rugged, local indication of fluid or gas temperature in pipes and tanks. The back-mounted NPT fitting simplifies installation on existing threaded ports. Operators requiring electrical output, data logging or remote monitoring should select a transmitter or digital sensor instead. The fixed stem length also limits use where insertion depth must be adjustable.

50 to 550 Degree Fahrenheit Range

The temperature span of 50 to 550 degrees Fahrenheit determines whether this instrument matches the process conditions. Verify that the media temperature stays within these limits to maintain accuracy and prevent damage. The dual-scale dial also shows 10 to 290 degrees Celsius for metric requirements. No other specification overrides this fundamental operating window.

Highlights

  • Wide 50–550 °F range covers high-heat applications
  • Dual-scale dial shows 10–290 °C for metric readings
  • 304 stainless-steel housing resists corrosion in harsh environments
  • Glass lens protects dial from impact and chemicals
  • 1/2 in NPT back connection enables direct tank mounting

Specifications

BrandASHCROFT
TypeEnvironmental & Mechanical

Questions about this item

How far can the stem reach into a process while the dial stays outside?

The stem extends 4 in from the back of the 3 in dial, so the sensing tip sits that far inside the vessel or pipe.

What surface temperature will the stainless housing and glass lens reach during continuous operation at the top of the range?

At 550 °F the 304 stainless case and glass lens will be at process temperature, so they become too hot to touch without protection.

Which fitting must the mounting port provide for the 1/2 NPT back connection to seal correctly?

The instrument requires a female 1/2 NPT thread in the vessel or pipe so the back-mounted male connector can thread in and seal.

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