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Glow-in-the-dark dial thermometer stainless steel housing glass lens 540161 0 to 500 degrees F

Dwyer Instruments Inc.

Dwyer Instruments Inc. 540161 Glow-in-the-dark bimetal thermometer 0-500°F measurement tool

SKU CH-5E59-4X97J

Glow-in-the-dark bimetal thermometer measures 0 to 500°F with a 4 in stem and includes a NIST-traceable certificate

  • TypeEnvironmental & Mechanical
  • Glow-in-the-dark dial for low-light readability
  • 0-500°F range covers high-temperature applications
  • 4-inch stem reaches into process media
  • 5-inch dial provides clear temperature indication
  • Stainless steel housing with glass lens for durability

Glow-in-the-dark bimetal thermometer

This Dwyer Instruments dial thermometer measures temperatures from 0 to 500 degrees Fahrenheit. Its glow-in-the-dark dial improves readability in low-light conditions. The instrument is built for industrial and mechanical environments where reliable temperature indication is required. A stainless steel housing and glass lens protect the movement from harsh surroundings.

4-inch stem with 1/2-inch NPT back connection

The 4-inch stem length and 1/2-inch NPT back connection suit specific process fittings. Upgrading from a shorter stem or a bottom-connected model is worthwhile when the installation demands this exact insertion depth and rear mounting orientation. The fixed dimensions mean the thermometer only fits applications that match these specifications.

5-inch dial diameter for clear reading

The 5-inch dial diameter provides a large scale for comfortable reading at a distance. It handles high-temperature monitoring up to the 500-degree limit across the full span. Headroom ends at the top of the range; processes exceeding this temperature require a different instrument. The included NIST-traceable certificate supports calibration programmes.

Highlights

  • Glow-in-the-dark dial for low-light readability
  • 0-500°F range covers high-temperature applications
  • 4-inch stem reaches into process media
  • 5-inch dial provides clear temperature indication
  • Stainless steel housing with glass lens for durability

Specifications

BrandDWYER INSTRUMENTS
TypeEnvironmental & Mechanical

Questions about this item

What size NPT fitting does the 540161 thermometer need to mount?

The instrument uses a 1/2 in NPT back connection, so the process port must accept that thread size for a secure fit.

How is the bimetal thermometer installed, and what step is often missed?

Thread the 1/2 in NPT stem into the port and tighten with a wrench on the hex flats; the step often missed is using the wrench instead of turning the dial housing, which can damage the case.

Does the glow-in-the-dark dial on the 540161 need periodic recharging or replacement?

The phosphorescent dial material recharges automatically from ambient light and requires no scheduled maintenance or replacement under normal use.

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