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Stainless steel analog panel thermometer with 3½ inch dial, 120 inch capillary tube and copper sensor

Value Brand

Value Brand 12U623 Analog Panel Mount Thermometer 100-350F

SKU CH-QJ51-KRVHC

Vapor-actuated analog panel thermometer reading 100 to 350 °F with a 120-inch capillary and 1/2-inch NPT copper sensor

  • Product typeEnvironmental & Mechanical
  • Wide 100-350°F range covers high-heat applications
  • Vapor-actuated 120-inch capillary allows remote sensor placement
  • Stainless steel case with acrylic lens resists harsh environments
  • 1/2 NPT copper sensor installs directly into process lines
  • ±1 scale division accuracy gives reliable local readings

Analog Panel Mount Thermometer

The Value Brand 12U623 is an analog panel mount thermometer built for industrial temperature monitoring. It uses a vapor-actuated sensing system with a copper sensor and bronze braided copper capillary tube. The 3 1/2 inch dial displays readings in both Fahrenheit and Celsius scales. Stainless steel case and acrylic lens suit harsh environments.

Thermals and power

The instrument operates mechanically without external power, so it generates no heat and produces no audible noise. A 120 inch capillary tube separates the sensor from the dial, allowing flexible panel placement. The 1/2 inch NPT sensor connection threads directly into process fittings. Accuracy is rated at plus or minus one scale division across the range.

Temperature range fit

This model covers 100 to 350 degrees Fahrenheit, which equals 37 to 176 degrees Celsius. Buyers who need readings below 100 degrees Fahrenheit or above 350 degrees Fahrenheit must choose a different range. The fixed scale cannot be recalibrated in the field. Sensor diameter is 0.437 inch and insertion length is 1.87 inches.

How it compares

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

Price $46.99
Cheaper than about 54% of the 3,030 comparable items (median $54.99).

Specifications

Product
Brand nameZoro Select
Product typeEnvironmental & Mechanical

Questions about this item

How do I install the 1/2 in NPT sensor on a panel and what step is often missed?

Thread the copper sensor into the 1/2 in NPT fitting, secure the front-flanged case to the panel cut-out, then route the 120 in bronze-braided capillary tube without kinking it — the capillary bend radius is the step most installers get wrong.

What maintenance or replacement will this thermometer need over time?

The vapor-actuated system is sealed; if the 120 in capillary tube or copper sensor develops a leak the whole unit must be replaced, and the acrylic lens should be cleaned only with mild soap and water to avoid crazing.

What is the first limit reached under sustained high-temperature use?

Continuous operation at the top of the 100 to 350 °F range can stress the bronze-braided copper capillary and vapor charge, making the 350 °F upper limit the first constraint encountered.

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